| 1 | package DB; |
| 2 | |
| 3 | # Debugger for Perl 5.00x; perl5db.pl patch level: |
| 4 | $VERSION = 1.19; |
| 5 | $header = "perl5db.pl version $VERSION"; |
| 6 | |
| 7 | # It is crucial that there is no lexicals in scope of `eval ""' down below |
| 8 | sub eval { |
| 9 | # 'my' would make it visible from user code |
| 10 | # but so does local! --tchrist [... into @DB::res, not @res. IZ] |
| 11 | local @res; |
| 12 | { |
| 13 | local $otrace = $trace; |
| 14 | local $osingle = $single; |
| 15 | local $od = $^D; |
| 16 | { ($evalarg) = $evalarg =~ /(.*)/s; } |
| 17 | @res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug |
| 18 | $trace = $otrace; |
| 19 | $single = $osingle; |
| 20 | $^D = $od; |
| 21 | } |
| 22 | my $at = $@; |
| 23 | local $saved[0]; # Preserve the old value of $@ |
| 24 | eval { &DB::save }; |
| 25 | if ($at) { |
| 26 | local $\ = ''; |
| 27 | print $OUT $at; |
| 28 | } elsif ($onetimeDump) { |
| 29 | if ($onetimeDump eq 'dump') { |
| 30 | local $option{dumpDepth} = $onetimedumpDepth |
| 31 | if defined $onetimedumpDepth; |
| 32 | dumpit($OUT, \@res); |
| 33 | } elsif ($onetimeDump eq 'methods') { |
| 34 | methods($res[0]) ; |
| 35 | } |
| 36 | } |
| 37 | @res; |
| 38 | } |
| 39 | |
| 40 | # After this point it is safe to introduce lexicals |
| 41 | # However, one should not overdo it: leave as much control from outside as possible |
| 42 | # |
| 43 | # This file is automatically included if you do perl -d. |
| 44 | # It's probably not useful to include this yourself. |
| 45 | # |
| 46 | # Before venturing further into these twisty passages, it is |
| 47 | # wise to read the perldebguts man page or risk the ire of dragons. |
| 48 | # |
| 49 | # Perl supplies the values for %sub. It effectively inserts |
| 50 | # a &DB::DB(); in front of every place that can have a |
| 51 | # breakpoint. Instead of a subroutine call it calls &DB::sub with |
| 52 | # $DB::sub being the called subroutine. It also inserts a BEGIN |
| 53 | # {require 'perl5db.pl'} before the first line. |
| 54 | # |
| 55 | # After each `require'd file is compiled, but before it is executed, a |
| 56 | # call to DB::postponed($main::{'_<'.$filename}) is emulated. Here the |
| 57 | # $filename is the expanded name of the `require'd file (as found as |
| 58 | # value of %INC). |
| 59 | # |
| 60 | # Additional services from Perl interpreter: |
| 61 | # |
| 62 | # if caller() is called from the package DB, it provides some |
| 63 | # additional data. |
| 64 | # |
| 65 | # The array @{$main::{'_<'.$filename}} (herein called @dbline) is the |
| 66 | # line-by-line contents of $filename. |
| 67 | # |
| 68 | # The hash %{'_<'.$filename} (herein called %dbline) contains |
| 69 | # breakpoints and action (it is keyed by line number), and individual |
| 70 | # entries are settable (as opposed to the whole hash). Only true/false |
| 71 | # is important to the interpreter, though the values used by |
| 72 | # perl5db.pl have the form "$break_condition\0$action". Values are |
| 73 | # magical in numeric context. |
| 74 | # |
| 75 | # The scalar ${'_<'.$filename} contains $filename. |
| 76 | # |
| 77 | # Note that no subroutine call is possible until &DB::sub is defined |
| 78 | # (for subroutines defined outside of the package DB). In fact the same is |
| 79 | # true if $deep is not defined. |
| 80 | # |
| 81 | # $Log: perldb.pl,v $ |
| 82 | |
| 83 | # |
| 84 | # At start reads $rcfile that may set important options. This file |
| 85 | # may define a subroutine &afterinit that will be executed after the |
| 86 | # debugger is initialized. |
| 87 | # |
| 88 | # After $rcfile is read reads environment variable PERLDB_OPTS and parses |
| 89 | # it as a rest of `O ...' line in debugger prompt. |
| 90 | # |
| 91 | # The options that can be specified only at startup: |
| 92 | # [To set in $rcfile, call &parse_options("optionName=new_value").] |
| 93 | # |
| 94 | # TTY - the TTY to use for debugging i/o. |
| 95 | # |
| 96 | # noTTY - if set, goes in NonStop mode. On interrupt if TTY is not set |
| 97 | # uses the value of noTTY or "/tmp/perldbtty$$" to find TTY using |
| 98 | # Term::Rendezvous. Current variant is to have the name of TTY in this |
| 99 | # file. |
| 100 | # |
| 101 | # ReadLine - If false, dummy ReadLine is used, so you can debug |
| 102 | # ReadLine applications. |
| 103 | # |
| 104 | # NonStop - if true, no i/o is performed until interrupt. |
| 105 | # |
| 106 | # LineInfo - file or pipe to print line number info to. If it is a |
| 107 | # pipe, a short "emacs like" message is used. |
| 108 | # |
| 109 | # RemotePort - host:port to connect to on remote host for remote debugging. |
| 110 | # |
| 111 | # Example $rcfile: (delete leading hashes!) |
| 112 | # |
| 113 | # &parse_options("NonStop=1 LineInfo=db.out"); |
| 114 | # sub afterinit { $trace = 1; } |
| 115 | # |
| 116 | # The script will run without human intervention, putting trace |
| 117 | # information into db.out. (If you interrupt it, you would better |
| 118 | # reset LineInfo to something "interactive"!) |
| 119 | # |
| 120 | ################################################################## |
| 121 | |
| 122 | # Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich) |
| 123 | |
| 124 | # modified Perl debugger, to be run from Emacs in perldb-mode |
| 125 | # Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990 |
| 126 | # Johan Vromans -- upgrade to 4.0 pl 10 |
| 127 | # Ilya Zakharevich -- patches after 5.001 (and some before ;-) |
| 128 | |
| 129 | # Changelog: |
| 130 | |
| 131 | # A lot of things changed after 0.94. First of all, core now informs |
| 132 | # debugger about entry into XSUBs, overloaded operators, tied operations, |
| 133 | # BEGIN and END. Handy with `O f=2'. |
| 134 | |
| 135 | # This can make debugger a little bit too verbose, please be patient |
| 136 | # and report your problems promptly. |
| 137 | |
| 138 | # Now the option frame has 3 values: 0,1,2. |
| 139 | |
| 140 | # Note that if DESTROY returns a reference to the object (or object), |
| 141 | # the deletion of data may be postponed until the next function call, |
| 142 | # due to the need to examine the return value. |
| 143 | |
| 144 | # Changes: 0.95: `v' command shows versions. |
| 145 | # Changes: 0.96: `v' command shows version of readline. |
| 146 | # primitive completion works (dynamic variables, subs for `b' and `l', |
| 147 | # options). Can `p %var' |
| 148 | # Better help (`h <' now works). New commands <<, >>, {, {{. |
| 149 | # {dump|print}_trace() coded (to be able to do it from <<cmd). |
| 150 | # `c sub' documented. |
| 151 | # At last enough magic combined to stop after the end of debuggee. |
| 152 | # !! should work now (thanks to Emacs bracket matching an extra |
| 153 | # `]' in a regexp is caught). |
| 154 | # `L', `D' and `A' span files now (as documented). |
| 155 | # Breakpoints in `require'd code are possible (used in `R'). |
| 156 | # Some additional words on internal work of debugger. |
| 157 | # `b load filename' implemented. |
| 158 | # `b postpone subr' implemented. |
| 159 | # now only `q' exits debugger (overwritable on $inhibit_exit). |
| 160 | # When restarting debugger breakpoints/actions persist. |
| 161 | # Buglet: When restarting debugger only one breakpoint/action per |
| 162 | # autoloaded function persists. |
| 163 | # Changes: 0.97: NonStop will not stop in at_exit(). |
| 164 | # Option AutoTrace implemented. |
| 165 | # Trace printed differently if frames are printed too. |
| 166 | # new `inhibitExit' option. |
| 167 | # printing of a very long statement interruptible. |
| 168 | # Changes: 0.98: New command `m' for printing possible methods |
| 169 | # 'l -' is a synonym for `-'. |
| 170 | # Cosmetic bugs in printing stack trace. |
| 171 | # `frame' & 8 to print "expanded args" in stack trace. |
| 172 | # Can list/break in imported subs. |
| 173 | # new `maxTraceLen' option. |
| 174 | # frame & 4 and frame & 8 granted. |
| 175 | # new command `m' |
| 176 | # nonstoppable lines do not have `:' near the line number. |
| 177 | # `b compile subname' implemented. |
| 178 | # Will not use $` any more. |
| 179 | # `-' behaves sane now. |
| 180 | # Changes: 0.99: Completion for `f', `m'. |
| 181 | # `m' will remove duplicate names instead of duplicate functions. |
| 182 | # `b load' strips trailing whitespace. |
| 183 | # completion ignores leading `|'; takes into account current package |
| 184 | # when completing a subroutine name (same for `l'). |
| 185 | # Changes: 1.07: Many fixed by tchrist 13-March-2000 |
| 186 | # BUG FIXES: |
| 187 | # + Added bare minimal security checks on perldb rc files, plus |
| 188 | # comments on what else is needed. |
| 189 | # + Fixed the ornaments that made "|h" completely unusable. |
| 190 | # They are not used in print_help if they will hurt. Strip pod |
| 191 | # if we're paging to less. |
| 192 | # + Fixed mis-formatting of help messages caused by ornaments |
| 193 | # to restore Larry's original formatting. |
| 194 | # + Fixed many other formatting errors. The code is still suboptimal, |
| 195 | # and needs a lot of work at restructuring. It's also misindented |
| 196 | # in many places. |
| 197 | # + Fixed bug where trying to look at an option like your pager |
| 198 | # shows "1". |
| 199 | # + Fixed some $? processing. Note: if you use csh or tcsh, you will |
| 200 | # lose. You should consider shell escapes not using their shell, |
| 201 | # or else not caring about detailed status. This should really be |
| 202 | # unified into one place, too. |
| 203 | # + Fixed bug where invisible trailing whitespace on commands hoses you, |
| 204 | # tricking Perl into thinking you weren't calling a debugger command! |
| 205 | # + Fixed bug where leading whitespace on commands hoses you. (One |
| 206 | # suggests a leading semicolon or any other irrelevant non-whitespace |
| 207 | # to indicate literal Perl code.) |
| 208 | # + Fixed bugs that ate warnings due to wrong selected handle. |
| 209 | # + Fixed a precedence bug on signal stuff. |
| 210 | # + Fixed some unseemly wording. |
| 211 | # + Fixed bug in help command trying to call perl method code. |
| 212 | # + Fixed to call dumpvar from exception handler. SIGPIPE killed us. |
| 213 | # ENHANCEMENTS: |
| 214 | # + Added some comments. This code is still nasty spaghetti. |
| 215 | # + Added message if you clear your pre/post command stacks which was |
| 216 | # very easy to do if you just typed a bare >, <, or {. (A command |
| 217 | # without an argument should *never* be a destructive action; this |
| 218 | # API is fundamentally screwed up; likewise option setting, which |
| 219 | # is equally buggered.) |
| 220 | # + Added command stack dump on argument of "?" for >, <, or {. |
| 221 | # + Added a semi-built-in doc viewer command that calls man with the |
| 222 | # proper %Config::Config path (and thus gets caching, man -k, etc), |
| 223 | # or else perldoc on obstreperous platforms. |
| 224 | # + Added to and rearranged the help information. |
| 225 | # + Detected apparent misuse of { ... } to declare a block; this used |
| 226 | # to work but now is a command, and mysteriously gave no complaint. |
| 227 | # |
| 228 | # Changes: 1.08: Apr 25, 2001 Jon Eveland <jweveland@yahoo.com> |
| 229 | # BUG FIX: |
| 230 | # + This patch to perl5db.pl cleans up formatting issues on the help |
| 231 | # summary (h h) screen in the debugger. Mostly columnar alignment |
| 232 | # issues, plus converted the printed text to use all spaces, since |
| 233 | # tabs don't seem to help much here. |
| 234 | # |
| 235 | # Changes: 1.09: May 19, 2001 Ilya Zakharevich <ilya@math.ohio-state.edu> |
| 236 | # 0) Minor bugs corrected; |
| 237 | # a) Support for auto-creation of new TTY window on startup, either |
| 238 | # unconditionally, or if started as a kid of another debugger session; |
| 239 | # b) New `O'ption CreateTTY |
| 240 | # I<CreateTTY> bits control attempts to create a new TTY on events: |
| 241 | # 1: on fork() 2: debugger is started inside debugger |
| 242 | # 4: on startup |
| 243 | # c) Code to auto-create a new TTY window on OS/2 (currently one |
| 244 | # extra window per session - need named pipes to have more...); |
| 245 | # d) Simplified interface for custom createTTY functions (with a backward |
| 246 | # compatibility hack); now returns the TTY name to use; return of '' |
| 247 | # means that the function reset the I/O handles itself; |
| 248 | # d') Better message on the semantic of custom createTTY function; |
| 249 | # e) Convert the existing code to create a TTY into a custom createTTY |
| 250 | # function; |
| 251 | # f) Consistent support for TTY names of the form "TTYin,TTYout"; |
| 252 | # g) Switch line-tracing output too to the created TTY window; |
| 253 | # h) make `b fork' DWIM with CORE::GLOBAL::fork; |
| 254 | # i) High-level debugger API cmd_*(): |
| 255 | # cmd_b_load($filenamepart) # b load filenamepart |
| 256 | # cmd_b_line($lineno [, $cond]) # b lineno [cond] |
| 257 | # cmd_b_sub($sub [, $cond]) # b sub [cond] |
| 258 | # cmd_stop() # Control-C |
| 259 | # cmd_d($lineno) # d lineno (B) |
| 260 | # The cmd_*() API returns FALSE on failure; in this case it outputs |
| 261 | # the error message to the debugging output. |
| 262 | # j) Low-level debugger API |
| 263 | # break_on_load($filename) # b load filename |
| 264 | # @files = report_break_on_load() # List files with load-breakpoints |
| 265 | # breakable_line_in_filename($name, $from [, $to]) |
| 266 | # # First breakable line in the |
| 267 | # # range $from .. $to. $to defaults |
| 268 | # # to $from, and may be less than $to |
| 269 | # breakable_line($from [, $to]) # Same for the current file |
| 270 | # break_on_filename_line($name, $lineno [, $cond]) |
| 271 | # # Set breakpoint,$cond defaults to 1 |
| 272 | # break_on_filename_line_range($name, $from, $to [, $cond]) |
| 273 | # # As above, on the first |
| 274 | # # breakable line in range |
| 275 | # break_on_line($lineno [, $cond]) # As above, in the current file |
| 276 | # break_subroutine($sub [, $cond]) # break on the first breakable line |
| 277 | # ($name, $from, $to) = subroutine_filename_lines($sub) |
| 278 | # # The range of lines of the text |
| 279 | # The low-level API returns TRUE on success, and die()s on failure. |
| 280 | # |
| 281 | # Changes: 1.10: May 23, 2001 Daniel Lewart <d-lewart@uiuc.edu> |
| 282 | # BUG FIXES: |
| 283 | # + Fixed warnings generated by "perl -dWe 42" |
| 284 | # + Corrected spelling errors |
| 285 | # + Squeezed Help (h) output into 80 columns |
| 286 | # |
| 287 | # Changes: 1.11: May 24, 2001 David Dyck <dcd@tc.fluke.com> |
| 288 | # + Made "x @INC" work like it used to |
| 289 | # |
| 290 | # Changes: 1.12: May 24, 2001 Daniel Lewart <d-lewart@uiuc.edu> |
| 291 | # + Fixed warnings generated by "O" (Show debugger options) |
| 292 | # + Fixed warnings generated by "p 42" (Print expression) |
| 293 | # Changes: 1.13: Jun 19, 2001 Scott.L.Miller@compaq.com |
| 294 | # + Added windowSize option |
| 295 | # Changes: 1.14: Oct 9, 2001 multiple |
| 296 | # + Clean up after itself on VMS (Charles Lane in 12385) |
| 297 | # + Adding "@ file" syntax (Peter Scott in 12014) |
| 298 | # + Debug reloading selfloaded stuff (Ilya Zakharevich in 11457) |
| 299 | # + $^S and other debugger fixes (Ilya Zakharevich in 11120) |
| 300 | # + Forgot a my() declaration (Ilya Zakharevich in 11085) |
| 301 | # Changes: 1.15: Nov 6, 2001 Michael G Schwern <schwern@pobox.com> |
| 302 | # + Updated 1.14 change log |
| 303 | # + Added *dbline explainatory comments |
| 304 | # + Mentioning perldebguts man page |
| 305 | # Changes: 1.16: Feb 15, 2002 Mark-Jason Dominus <mjd@plover.com> |
| 306 | # + $onetimeDump improvements |
| 307 | # Changes: 1.17: Feb 20, 2002 Richard Foley <richard.foley@rfi.net> |
| 308 | # Moved some code to cmd_[.]()'s for clarity and ease of handling, |
| 309 | # rationalised the following commands and added cmd_wrapper() to |
| 310 | # enable switching between old and frighteningly consistent new |
| 311 | # behaviours for diehards: 'o CommandSet=pre580' (sigh...) |
| 312 | # a(add), A(del) # action expr (added del by line) |
| 313 | # + b(add), B(del) # break [line] (was b,D) |
| 314 | # + w(add), W(del) # watch expr (was W,W) added del by expr |
| 315 | # + h(summary), h h(long) # help (hh) (was h h,h) |
| 316 | # + m(methods), M(modules) # ... (was m,v) |
| 317 | # + o(option) # lc (was O) |
| 318 | # + v(view code), V(view Variables) # ... (was w,V) |
| 319 | # Changes: 1.18: Mar 17, 2002 Richard Foley <richard.foley@rfi.net> |
| 320 | # + fixed missing cmd_O bug |
| 321 | # Changes: 1.19: Mar 29, 2002 Spider Boardman |
| 322 | # + Added missing local()s -- DB::DB is called recursively. |
| 323 | # |
| 324 | #################################################################### |
| 325 | |
| 326 | # Needed for the statement after exec(): |
| 327 | |
| 328 | BEGIN { $ini_warn = $^W; $^W = 0 } # Switch compilation warnings off until another BEGIN. |
| 329 | local($^W) = 0; # Switch run-time warnings off during init. |
| 330 | warn ( # Do not ;-) |
| 331 | $dumpvar::hashDepth, |
| 332 | $dumpvar::arrayDepth, |
| 333 | $dumpvar::dumpDBFiles, |
| 334 | $dumpvar::dumpPackages, |
| 335 | $dumpvar::quoteHighBit, |
| 336 | $dumpvar::printUndef, |
| 337 | $dumpvar::globPrint, |
| 338 | $dumpvar::usageOnly, |
| 339 | @ARGS, |
| 340 | $Carp::CarpLevel, |
| 341 | $panic, |
| 342 | $second_time, |
| 343 | ) if 0; |
| 344 | |
| 345 | # Command-line + PERLLIB: |
| 346 | @ini_INC = @INC; |
| 347 | |
| 348 | # $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?! |
| 349 | |
| 350 | $trace = $signal = $single = 0; # Uninitialized warning suppression |
| 351 | # (local $^W cannot help - other packages!). |
| 352 | $inhibit_exit = $option{PrintRet} = 1; |
| 353 | |
| 354 | @options = qw(hashDepth arrayDepth CommandSet dumpDepth |
| 355 | DumpDBFiles DumpPackages DumpReused |
| 356 | compactDump veryCompact quote HighBit undefPrint |
| 357 | globPrint PrintRet UsageOnly frame AutoTrace |
| 358 | TTY noTTY ReadLine NonStop LineInfo maxTraceLen |
| 359 | recallCommand ShellBang pager tkRunning ornaments |
| 360 | signalLevel warnLevel dieLevel inhibit_exit |
| 361 | ImmediateStop bareStringify CreateTTY |
| 362 | RemotePort windowSize); |
| 363 | |
| 364 | %optionVars = ( |
| 365 | hashDepth => \$dumpvar::hashDepth, |
| 366 | arrayDepth => \$dumpvar::arrayDepth, |
| 367 | CommandSet => \$CommandSet, |
| 368 | DumpDBFiles => \$dumpvar::dumpDBFiles, |
| 369 | DumpPackages => \$dumpvar::dumpPackages, |
| 370 | DumpReused => \$dumpvar::dumpReused, |
| 371 | HighBit => \$dumpvar::quoteHighBit, |
| 372 | undefPrint => \$dumpvar::printUndef, |
| 373 | globPrint => \$dumpvar::globPrint, |
| 374 | UsageOnly => \$dumpvar::usageOnly, |
| 375 | CreateTTY => \$CreateTTY, |
| 376 | bareStringify => \$dumpvar::bareStringify, |
| 377 | frame => \$frame, |
| 378 | AutoTrace => \$trace, |
| 379 | inhibit_exit => \$inhibit_exit, |
| 380 | maxTraceLen => \$maxtrace, |
| 381 | ImmediateStop => \$ImmediateStop, |
| 382 | RemotePort => \$remoteport, |
| 383 | windowSize => \$window, |
| 384 | ); |
| 385 | |
| 386 | %optionAction = ( |
| 387 | compactDump => \&dumpvar::compactDump, |
| 388 | veryCompact => \&dumpvar::veryCompact, |
| 389 | quote => \&dumpvar::quote, |
| 390 | TTY => \&TTY, |
| 391 | noTTY => \&noTTY, |
| 392 | ReadLine => \&ReadLine, |
| 393 | NonStop => \&NonStop, |
| 394 | LineInfo => \&LineInfo, |
| 395 | recallCommand => \&recallCommand, |
| 396 | ShellBang => \&shellBang, |
| 397 | pager => \&pager, |
| 398 | signalLevel => \&signalLevel, |
| 399 | warnLevel => \&warnLevel, |
| 400 | dieLevel => \&dieLevel, |
| 401 | tkRunning => \&tkRunning, |
| 402 | ornaments => \&ornaments, |
| 403 | RemotePort => \&RemotePort, |
| 404 | ); |
| 405 | |
| 406 | %optionRequire = ( |
| 407 | compactDump => 'dumpvar.pl', |
| 408 | veryCompact => 'dumpvar.pl', |
| 409 | quote => 'dumpvar.pl', |
| 410 | ); |
| 411 | |
| 412 | # These guys may be defined in $ENV{PERL5DB} : |
| 413 | $rl = 1 unless defined $rl; |
| 414 | $warnLevel = 1 unless defined $warnLevel; |
| 415 | $dieLevel = 1 unless defined $dieLevel; |
| 416 | $signalLevel = 1 unless defined $signalLevel; |
| 417 | $pre = [] unless defined $pre; |
| 418 | $post = [] unless defined $post; |
| 419 | $pretype = [] unless defined $pretype; |
| 420 | $CreateTTY = 3 unless defined $CreateTTY; |
| 421 | $CommandSet = '580' unless defined $CommandSet; |
| 422 | |
| 423 | warnLevel($warnLevel); |
| 424 | dieLevel($dieLevel); |
| 425 | signalLevel($signalLevel); |
| 426 | |
| 427 | pager( |
| 428 | defined $ENV{PAGER} ? $ENV{PAGER} : |
| 429 | eval { require Config } && |
| 430 | defined $Config::Config{pager} ? $Config::Config{pager} |
| 431 | : 'more' |
| 432 | ) unless defined $pager; |
| 433 | setman(); |
| 434 | &recallCommand("!") unless defined $prc; |
| 435 | &shellBang("!") unless defined $psh; |
| 436 | sethelp(); |
| 437 | $maxtrace = 400 unless defined $maxtrace; |
| 438 | $ini_pids = $ENV{PERLDB_PIDS}; |
| 439 | if (defined $ENV{PERLDB_PIDS}) { |
| 440 | $pids = "[$ENV{PERLDB_PIDS}]"; |
| 441 | $ENV{PERLDB_PIDS} .= "->$$"; |
| 442 | $term_pid = -1; |
| 443 | } else { |
| 444 | $ENV{PERLDB_PIDS} = "$$"; |
| 445 | $pids = "{pid=$$}"; |
| 446 | $term_pid = $$; |
| 447 | } |
| 448 | $pidprompt = ''; |
| 449 | *emacs = $slave_editor if $slave_editor; # May be used in afterinit()... |
| 450 | |
| 451 | if (-e "/dev/tty") { # this is the wrong metric! |
| 452 | $rcfile=".perldb"; |
| 453 | } else { |
| 454 | $rcfile="perldb.ini"; |
| 455 | } |
| 456 | |
| 457 | # This isn't really safe, because there's a race |
| 458 | # between checking and opening. The solution is to |
| 459 | # open and fstat the handle, but then you have to read and |
| 460 | # eval the contents. But then the silly thing gets |
| 461 | # your lexical scope, which is unfortunately at best. |
| 462 | sub safe_do { |
| 463 | my $file = shift; |
| 464 | |
| 465 | # Just exactly what part of the word "CORE::" don't you understand? |
| 466 | local $SIG{__WARN__}; |
| 467 | local $SIG{__DIE__}; |
| 468 | |
| 469 | unless (is_safe_file($file)) { |
| 470 | CORE::warn <<EO_GRIPE; |
| 471 | perldb: Must not source insecure rcfile $file. |
| 472 | You or the superuser must be the owner, and it must not |
| 473 | be writable by anyone but its owner. |
| 474 | EO_GRIPE |
| 475 | return; |
| 476 | } |
| 477 | |
| 478 | do $file; |
| 479 | CORE::warn("perldb: couldn't parse $file: $@") if $@; |
| 480 | } |
| 481 | |
| 482 | |
| 483 | # Verifies that owner is either real user or superuser and that no |
| 484 | # one but owner may write to it. This function is of limited use |
| 485 | # when called on a path instead of upon a handle, because there are |
| 486 | # no guarantees that filename (by dirent) whose file (by ino) is |
| 487 | # eventually accessed is the same as the one tested. |
| 488 | # Assumes that the file's existence is not in doubt. |
| 489 | sub is_safe_file { |
| 490 | my $path = shift; |
| 491 | stat($path) || return; # mysteriously vaporized |
| 492 | my($dev,$ino,$mode,$nlink,$uid,$gid) = stat(_); |
| 493 | |
| 494 | return 0 if $uid != 0 && $uid != $<; |
| 495 | return 0 if $mode & 022; |
| 496 | return 1; |
| 497 | } |
| 498 | |
| 499 | if (-f $rcfile) { |
| 500 | safe_do("./$rcfile"); |
| 501 | } |
| 502 | elsif (defined $ENV{HOME} && -f "$ENV{HOME}/$rcfile") { |
| 503 | safe_do("$ENV{HOME}/$rcfile"); |
| 504 | } |
| 505 | elsif (defined $ENV{LOGDIR} && -f "$ENV{LOGDIR}/$rcfile") { |
| 506 | safe_do("$ENV{LOGDIR}/$rcfile"); |
| 507 | } |
| 508 | |
| 509 | if (defined $ENV{PERLDB_OPTS}) { |
| 510 | parse_options($ENV{PERLDB_OPTS}); |
| 511 | } |
| 512 | |
| 513 | if ( not defined &get_fork_TTY and defined $ENV{TERM} and $ENV{TERM} eq 'xterm' |
| 514 | and defined $ENV{WINDOWID} and defined $ENV{DISPLAY} ) { # _inside_ XTERM? |
| 515 | *get_fork_TTY = \&xterm_get_fork_TTY; |
| 516 | } elsif ($^O eq 'os2') { |
| 517 | *get_fork_TTY = \&os2_get_fork_TTY; |
| 518 | } |
| 519 | |
| 520 | # Here begin the unreadable code. It needs fixing. |
| 521 | |
| 522 | if (exists $ENV{PERLDB_RESTART}) { |
| 523 | delete $ENV{PERLDB_RESTART}; |
| 524 | # $restart = 1; |
| 525 | @hist = get_list('PERLDB_HIST'); |
| 526 | %break_on_load = get_list("PERLDB_ON_LOAD"); |
| 527 | %postponed = get_list("PERLDB_POSTPONE"); |
| 528 | my @had_breakpoints= get_list("PERLDB_VISITED"); |
| 529 | for (0 .. $#had_breakpoints) { |
| 530 | my %pf = get_list("PERLDB_FILE_$_"); |
| 531 | $postponed_file{$had_breakpoints[$_]} = \%pf if %pf; |
| 532 | } |
| 533 | my %opt = get_list("PERLDB_OPT"); |
| 534 | my ($opt,$val); |
| 535 | while (($opt,$val) = each %opt) { |
| 536 | $val =~ s/[\\\']/\\$1/g; |
| 537 | parse_options("$opt'$val'"); |
| 538 | } |
| 539 | @INC = get_list("PERLDB_INC"); |
| 540 | @ini_INC = @INC; |
| 541 | $pretype = [get_list("PERLDB_PRETYPE")]; |
| 542 | $pre = [get_list("PERLDB_PRE")]; |
| 543 | $post = [get_list("PERLDB_POST")]; |
| 544 | @typeahead = get_list("PERLDB_TYPEAHEAD", @typeahead); |
| 545 | } |
| 546 | |
| 547 | if ($notty) { |
| 548 | $runnonstop = 1; |
| 549 | } else { |
| 550 | # Is Perl being run from a slave editor or graphical debugger? |
| 551 | $slave_editor = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs')); |
| 552 | $rl = 0, shift(@main::ARGV) if $slave_editor; |
| 553 | |
| 554 | #require Term::ReadLine; |
| 555 | |
| 556 | if ($^O eq 'cygwin') { |
| 557 | # /dev/tty is binary. use stdin for textmode |
| 558 | undef $console; |
| 559 | } elsif (-e "/dev/tty") { |
| 560 | $console = "/dev/tty"; |
| 561 | } elsif ($^O eq 'dos' or -e "con" or $^O eq 'MSWin32') { |
| 562 | $console = "con"; |
| 563 | } elsif ($^O eq 'MacOS') { |
| 564 | if ($MacPerl::Version !~ /MPW/) { |
| 565 | $console = "Dev:Console:Perl Debug"; # Separate window for application |
| 566 | } else { |
| 567 | $console = "Dev:Console"; |
| 568 | } |
| 569 | } else { |
| 570 | $console = "sys\$command"; |
| 571 | } |
| 572 | |
| 573 | if (($^O eq 'MSWin32') and ($slave_editor or defined $ENV{EMACS})) { |
| 574 | $console = undef; |
| 575 | } |
| 576 | |
| 577 | if ($^O eq 'NetWare') { |
| 578 | $console = undef; |
| 579 | } |
| 580 | |
| 581 | # Around a bug: |
| 582 | if (defined $ENV{OS2_SHELL} and ($slave_editor or $ENV{WINDOWID})) { # In OS/2 |
| 583 | $console = undef; |
| 584 | } |
| 585 | |
| 586 | if ($^O eq 'epoc') { |
| 587 | $console = undef; |
| 588 | } |
| 589 | |
| 590 | $console = $tty if defined $tty; |
| 591 | |
| 592 | if (defined $remoteport) { |
| 593 | require IO::Socket; |
| 594 | $OUT = new IO::Socket::INET( Timeout => '10', |
| 595 | PeerAddr => $remoteport, |
| 596 | Proto => 'tcp', |
| 597 | ); |
| 598 | if (!$OUT) { die "Unable to connect to remote host: $remoteport\n"; } |
| 599 | $IN = $OUT; |
| 600 | } else { |
| 601 | create_IN_OUT(4) if $CreateTTY & 4; |
| 602 | if ($console) { |
| 603 | my ($i, $o) = split /,/, $console; |
| 604 | $o = $i unless defined $o; |
| 605 | open(IN,"+<$i") || open(IN,"<$i") || open(IN,"<&STDIN"); |
| 606 | open(OUT,"+>$o") || open(OUT,">$o") || open(OUT,">&STDERR") |
| 607 | || open(OUT,">&STDOUT"); # so we don't dongle stdout |
| 608 | } elsif (not defined $console) { |
| 609 | open(IN,"<&STDIN"); |
| 610 | open(OUT,">&STDERR") || open(OUT,">&STDOUT"); # so we don't dongle stdout |
| 611 | $console = 'STDIN/OUT'; |
| 612 | } |
| 613 | # so open("|more") can read from STDOUT and so we don't dingle stdin |
| 614 | $IN = \*IN, $OUT = \*OUT if $console or not defined $console; |
| 615 | } |
| 616 | my $previous = select($OUT); |
| 617 | $| = 1; # for DB::OUT |
| 618 | select($previous); |
| 619 | |
| 620 | $LINEINFO = $OUT unless defined $LINEINFO; |
| 621 | $lineinfo = $console unless defined $lineinfo; |
| 622 | |
| 623 | $header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/; |
| 624 | unless ($runnonstop) { |
| 625 | local $\ = ''; |
| 626 | local $, = ''; |
| 627 | if ($term_pid eq '-1') { |
| 628 | print $OUT "\nDaughter DB session started...\n"; |
| 629 | } else { |
| 630 | print $OUT "\nLoading DB routines from $header\n"; |
| 631 | print $OUT ("Editor support ", |
| 632 | $slave_editor ? "enabled" : "available", |
| 633 | ".\n"); |
| 634 | print $OUT "\nEnter h or `h h' for help, or `$doccmd perldebug' for more help.\n\n"; |
| 635 | } |
| 636 | } |
| 637 | } |
| 638 | |
| 639 | @ARGS = @ARGV; |
| 640 | for (@args) { |
| 641 | s/\'/\\\'/g; |
| 642 | s/(.*)/'$1'/ unless /^-?[\d.]+$/; |
| 643 | } |
| 644 | |
| 645 | if (defined &afterinit) { # May be defined in $rcfile |
| 646 | &afterinit(); |
| 647 | } |
| 648 | |
| 649 | $I_m_init = 1; |
| 650 | |
| 651 | ############################################################ Subroutines |
| 652 | |
| 653 | sub DB { |
| 654 | # _After_ the perl program is compiled, $single is set to 1: |
| 655 | if ($single and not $second_time++) { |
| 656 | if ($runnonstop) { # Disable until signal |
| 657 | for ($i=0; $i <= $stack_depth; ) { |
| 658 | $stack[$i++] &= ~1; |
| 659 | } |
| 660 | $single = 0; |
| 661 | # return; # Would not print trace! |
| 662 | } elsif ($ImmediateStop) { |
| 663 | $ImmediateStop = 0; |
| 664 | $signal = 1; |
| 665 | } |
| 666 | } |
| 667 | $runnonstop = 0 if $single or $signal; # Disable it if interactive. |
| 668 | &save; |
| 669 | local($package, $filename, $line) = caller; |
| 670 | local $filename_ini = $filename; |
| 671 | local $usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' . |
| 672 | "package $package;"; # this won't let them modify, alas |
| 673 | local(*dbline) = $main::{'_<' . $filename}; |
| 674 | |
| 675 | # we need to check for pseudofiles on Mac OS (these are files |
| 676 | # not attached to a filename, but instead stored in Dev:Pseudo) |
| 677 | if ($^O eq 'MacOS' && $#dbline < 0) { |
| 678 | $filename_ini = $filename = 'Dev:Pseudo'; |
| 679 | *dbline = $main::{'_<' . $filename}; |
| 680 | } |
| 681 | |
| 682 | local $max = $#dbline; |
| 683 | if ($dbline{$line} && (($stop,$action) = split(/\0/,$dbline{$line}))) { |
| 684 | if ($stop eq '1') { |
| 685 | $signal |= 1; |
| 686 | } elsif ($stop) { |
| 687 | $evalarg = "\$DB::signal |= 1 if do {$stop}"; &eval; |
| 688 | $dbline{$line} =~ s/;9($|\0)/$1/; |
| 689 | } |
| 690 | } |
| 691 | my $was_signal = $signal; |
| 692 | if ($trace & 2) { |
| 693 | for (my $n = 0; $n <= $#to_watch; $n++) { |
| 694 | $evalarg = $to_watch[$n]; |
| 695 | local $onetimeDump; # Do not output results |
| 696 | my ($val) = &eval; # Fix context (&eval is doing array)? |
| 697 | $val = ( (defined $val) ? "'$val'" : 'undef' ); |
| 698 | if ($val ne $old_watch[$n]) { |
| 699 | $signal = 1; |
| 700 | print $OUT <<EOP; |
| 701 | Watchpoint $n:\t$to_watch[$n] changed: |
| 702 | old value:\t$old_watch[$n] |
| 703 | new value:\t$val |
| 704 | EOP |
| 705 | $old_watch[$n] = $val; |
| 706 | } |
| 707 | } |
| 708 | } |
| 709 | if ($trace & 4) { # User-installed watch |
| 710 | return if watchfunction($package, $filename, $line) |
| 711 | and not $single and not $was_signal and not ($trace & ~4); |
| 712 | } |
| 713 | $was_signal = $signal; |
| 714 | $signal = 0; |
| 715 | if ($single || ($trace & 1) || $was_signal) { |
| 716 | if ($slave_editor) { |
| 717 | $position = "\032\032$filename:$line:0\n"; |
| 718 | print_lineinfo($position); |
| 719 | } elsif ($package eq 'DB::fake') { |
| 720 | $term || &setterm; |
| 721 | print_help(<<EOP); |
| 722 | Debugged program terminated. Use B<q> to quit or B<R> to restart, |
| 723 | use B<O> I<inhibit_exit> to avoid stopping after program termination, |
| 724 | B<h q>, B<h R> or B<h O> to get additional info. |
| 725 | EOP |
| 726 | $package = 'main'; |
| 727 | $usercontext = '($@, $!, $^E, $,, $/, $\, $^W) = @saved;' . |
| 728 | "package $package;"; # this won't let them modify, alas |
| 729 | } else { |
| 730 | $sub =~ s/\'/::/; |
| 731 | $prefix = $sub =~ /::/ ? "" : "${'package'}::"; |
| 732 | $prefix .= "$sub($filename:"; |
| 733 | $after = ($dbline[$line] =~ /\n$/ ? '' : "\n"); |
| 734 | if (length($prefix) > 30) { |
| 735 | $position = "$prefix$line):\n$line:\t$dbline[$line]$after"; |
| 736 | $prefix = ""; |
| 737 | $infix = ":\t"; |
| 738 | } else { |
| 739 | $infix = "):\t"; |
| 740 | $position = "$prefix$line$infix$dbline[$line]$after"; |
| 741 | } |
| 742 | if ($frame) { |
| 743 | print_lineinfo(' ' x $stack_depth, "$line:\t$dbline[$line]$after"); |
| 744 | } else { |
| 745 | print_lineinfo($position); |
| 746 | } |
| 747 | for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi |
| 748 | last if $dbline[$i] =~ /^\s*[\;\}\#\n]/; |
| 749 | last if $signal; |
| 750 | $after = ($dbline[$i] =~ /\n$/ ? '' : "\n"); |
| 751 | $incr_pos = "$prefix$i$infix$dbline[$i]$after"; |
| 752 | $position .= $incr_pos; |
| 753 | if ($frame) { |
| 754 | print_lineinfo(' ' x $stack_depth, "$i:\t$dbline[$i]$after"); |
| 755 | } else { |
| 756 | print_lineinfo($incr_pos); |
| 757 | } |
| 758 | } |
| 759 | } |
| 760 | } |
| 761 | $evalarg = $action, &eval if $action; |
| 762 | if ($single || $was_signal) { |
| 763 | local $level = $level + 1; |
| 764 | foreach $evalarg (@$pre) { |
| 765 | &eval; |
| 766 | } |
| 767 | print $OUT $stack_depth . " levels deep in subroutine calls!\n" |
| 768 | if $single & 4; |
| 769 | $start = $line; |
| 770 | $incr = -1; # for backward motion. |
| 771 | @typeahead = (@$pretype, @typeahead); |
| 772 | CMD: |
| 773 | while (($term || &setterm), |
| 774 | ($term_pid == $$ or resetterm(1)), |
| 775 | defined ($cmd=&readline("$pidprompt DB" . ('<' x $level) . |
| 776 | ($#hist+1) . ('>' x $level) . " "))) |
| 777 | { |
| 778 | $single = 0; |
| 779 | $signal = 0; |
| 780 | $cmd =~ s/\\$/\n/ && do { |
| 781 | $cmd .= &readline(" cont: "); |
| 782 | redo CMD; |
| 783 | }; |
| 784 | $cmd =~ /^$/ && ($cmd = $laststep); |
| 785 | push(@hist,$cmd) if length($cmd) > 1; |
| 786 | PIPE: { |
| 787 | $cmd =~ s/^\s+//s; # trim annoying leading whitespace |
| 788 | $cmd =~ s/\s+$//s; # trim annoying trailing whitespace |
| 789 | ($i) = split(/\s+/,$cmd); |
| 790 | if ($alias{$i}) { |
| 791 | # squelch the sigmangler |
| 792 | local $SIG{__DIE__}; |
| 793 | local $SIG{__WARN__}; |
| 794 | eval "\$cmd =~ $alias{$i}"; |
| 795 | if ($@) { |
| 796 | local $\ = ''; |
| 797 | print $OUT "Couldn't evaluate `$i' alias: $@"; |
| 798 | next CMD; |
| 799 | } |
| 800 | } |
| 801 | $cmd =~ /^q$/ && do { |
| 802 | $fall_off_end = 1; |
| 803 | clean_ENV(); |
| 804 | exit $?; |
| 805 | }; |
| 806 | $cmd =~ /^t$/ && do { |
| 807 | $trace ^= 1; |
| 808 | local $\ = ''; |
| 809 | print $OUT "Trace = " . |
| 810 | (($trace & 1) ? "on" : "off" ) . "\n"; |
| 811 | next CMD; }; |
| 812 | $cmd =~ /^S(\s+(!)?(.+))?$/ && do { |
| 813 | $Srev = defined $2; $Spatt = $3; $Snocheck = ! defined $1; |
| 814 | local $\ = ''; |
| 815 | local $, = ''; |
| 816 | foreach $subname (sort(keys %sub)) { |
| 817 | if ($Snocheck or $Srev^($subname =~ /$Spatt/)) { |
| 818 | print $OUT $subname,"\n"; |
| 819 | } |
| 820 | } |
| 821 | next CMD; }; |
| 822 | $cmd =~ s/^X\b/V $package/; |
| 823 | $cmd =~ /^V$/ && do { |
| 824 | $cmd = "V $package"; }; |
| 825 | $cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do { |
| 826 | local ($savout) = select($OUT); |
| 827 | $packname = $1; |
| 828 | @vars = split(' ',$2); |
| 829 | do 'dumpvar.pl' unless defined &main::dumpvar; |
| 830 | if (defined &main::dumpvar) { |
| 831 | local $frame = 0; |
| 832 | local $doret = -2; |
| 833 | # must detect sigpipe failures |
| 834 | eval { &main::dumpvar($packname, |
| 835 | defined $option{dumpDepth} |
| 836 | ? $option{dumpDepth} : -1, |
| 837 | @vars) }; |
| 838 | if ($@) { |
| 839 | die unless $@ =~ /dumpvar print failed/; |
| 840 | } |
| 841 | } else { |
| 842 | print $OUT "dumpvar.pl not available.\n"; |
| 843 | } |
| 844 | select ($savout); |
| 845 | next CMD; }; |
| 846 | $cmd =~ s/^x\b/ / && do { # So that will be evaled |
| 847 | $onetimeDump = 'dump'; |
| 848 | # handle special "x 3 blah" syntax |
| 849 | if ($cmd =~ s/^\s*(\d+)(?=\s)/ /) { |
| 850 | $onetimedumpDepth = $1; |
| 851 | } |
| 852 | }; |
| 853 | $cmd =~ s/^m\s+([\w:]+)\s*$/ / && do { |
| 854 | methods($1); next CMD}; |
| 855 | $cmd =~ s/^m\b/ / && do { # So this will be evaled |
| 856 | $onetimeDump = 'methods'; }; |
| 857 | $cmd =~ /^f\b\s*(.*)/ && do { |
| 858 | $file = $1; |
| 859 | $file =~ s/\s+$//; |
| 860 | if (!$file) { |
| 861 | print $OUT "The old f command is now the r command.\n"; # hint |
| 862 | print $OUT "The new f command switches filenames.\n"; |
| 863 | next CMD; |
| 864 | } |
| 865 | if (!defined $main::{'_<' . $file}) { |
| 866 | if (($try) = grep(m#^_<.*$file#, keys %main::)) {{ |
| 867 | $try = substr($try,2); |
| 868 | print $OUT "Choosing $try matching `$file':\n"; |
| 869 | $file = $try; |
| 870 | }} |
| 871 | } |
| 872 | if (!defined $main::{'_<' . $file}) { |
| 873 | print $OUT "No file matching `$file' is loaded.\n"; |
| 874 | next CMD; |
| 875 | } elsif ($file ne $filename) { |
| 876 | *dbline = $main::{'_<' . $file}; |
| 877 | $max = $#dbline; |
| 878 | $filename = $file; |
| 879 | $start = 1; |
| 880 | $cmd = "l"; |
| 881 | } else { |
| 882 | print $OUT "Already in $file.\n"; |
| 883 | next CMD; |
| 884 | } |
| 885 | }; |
| 886 | $cmd =~ /^\.$/ && do { |
| 887 | $incr = -1; # for backward motion. |
| 888 | $start = $line; |
| 889 | $filename = $filename_ini; |
| 890 | *dbline = $main::{'_<' . $filename}; |
| 891 | $max = $#dbline; |
| 892 | print_lineinfo($position); |
| 893 | next CMD }; |
| 894 | $cmd =~ /^-$/ && do { |
| 895 | $start -= $incr + $window + 1; |
| 896 | $start = 1 if $start <= 0; |
| 897 | $incr = $window - 1; |
| 898 | $cmd = 'l ' . ($start) . '+'; }; |
| 899 | # rjsf -> |
| 900 | $cmd =~ /^([aAbBDhlLMoOvwW])\b\s*(.*)/s && do { |
| 901 | &cmd_wrapper($1, $2, $line); |
| 902 | next CMD; |
| 903 | }; |
| 904 | # <- rjsf |
| 905 | $cmd =~ /^\<\<\s*(.*)/ && do { # \<\< for CPerl sake: not HERE |
| 906 | push @$pre, action($1); |
| 907 | next CMD; }; |
| 908 | $cmd =~ /^>>\s*(.*)/ && do { |
| 909 | push @$post, action($1); |
| 910 | next CMD; }; |
| 911 | $cmd =~ /^<\s*(.*)/ && do { |
| 912 | unless ($1) { |
| 913 | print $OUT "All < actions cleared.\n"; |
| 914 | $pre = []; |
| 915 | next CMD; |
| 916 | } |
| 917 | if ($1 eq '?') { |
| 918 | unless (@$pre) { |
| 919 | print $OUT "No pre-prompt Perl actions.\n"; |
| 920 | next CMD; |
| 921 | } |
| 922 | print $OUT "Perl commands run before each prompt:\n"; |
| 923 | for my $action ( @$pre ) { |
| 924 | print $OUT "\t< -- $action\n"; |
| 925 | } |
| 926 | next CMD; |
| 927 | } |
| 928 | $pre = [action($1)]; |
| 929 | next CMD; }; |
| 930 | $cmd =~ /^>\s*(.*)/ && do { |
| 931 | unless ($1) { |
| 932 | print $OUT "All > actions cleared.\n"; |
| 933 | $post = []; |
| 934 | next CMD; |
| 935 | } |
| 936 | if ($1 eq '?') { |
| 937 | unless (@$post) { |
| 938 | print $OUT "No post-prompt Perl actions.\n"; |
| 939 | next CMD; |
| 940 | } |
| 941 | print $OUT "Perl commands run after each prompt:\n"; |
| 942 | for my $action ( @$post ) { |
| 943 | print $OUT "\t> -- $action\n"; |
| 944 | } |
| 945 | next CMD; |
| 946 | } |
| 947 | $post = [action($1)]; |
| 948 | next CMD; }; |
| 949 | $cmd =~ /^\{\{\s*(.*)/ && do { |
| 950 | if ($cmd =~ /^\{.*\}$/ && unbalanced(substr($cmd,2))) { |
| 951 | print $OUT "{{ is now a debugger command\n", |
| 952 | "use `;{{' if you mean Perl code\n"; |
| 953 | $cmd = "h {{"; |
| 954 | redo CMD; |
| 955 | } |
| 956 | push @$pretype, $1; |
| 957 | next CMD; }; |
| 958 | $cmd =~ /^\{\s*(.*)/ && do { |
| 959 | unless ($1) { |
| 960 | print $OUT "All { actions cleared.\n"; |
| 961 | $pretype = []; |
| 962 | next CMD; |
| 963 | } |
| 964 | if ($1 eq '?') { |
| 965 | unless (@$pretype) { |
| 966 | print $OUT "No pre-prompt debugger actions.\n"; |
| 967 | next CMD; |
| 968 | } |
| 969 | print $OUT "Debugger commands run before each prompt:\n"; |
| 970 | for my $action ( @$pretype ) { |
| 971 | print $OUT "\t{ -- $action\n"; |
| 972 | } |
| 973 | next CMD; |
| 974 | } |
| 975 | if ($cmd =~ /^\{.*\}$/ && unbalanced(substr($cmd,1))) { |
| 976 | print $OUT "{ is now a debugger command\n", |
| 977 | "use `;{' if you mean Perl code\n"; |
| 978 | $cmd = "h {"; |
| 979 | redo CMD; |
| 980 | } |
| 981 | $pretype = [$1]; |
| 982 | next CMD; }; |
| 983 | $cmd =~ /^n$/ && do { |
| 984 | end_report(), next CMD if $finished and $level <= 1; |
| 985 | $single = 2; |
| 986 | $laststep = $cmd; |
| 987 | last CMD; }; |
| 988 | $cmd =~ /^s$/ && do { |
| 989 | end_report(), next CMD if $finished and $level <= 1; |
| 990 | $single = 1; |
| 991 | $laststep = $cmd; |
| 992 | last CMD; }; |
| 993 | $cmd =~ /^c\b\s*([\w:]*)\s*$/ && do { |
| 994 | end_report(), next CMD if $finished and $level <= 1; |
| 995 | $subname = $i = $1; |
| 996 | # Probably not needed, since we finish an interactive |
| 997 | # sub-session anyway... |
| 998 | # local $filename = $filename; |
| 999 | # local *dbline = *dbline; # XXX Would this work?! |
| 1000 | if ($subname =~ /\D/) { # subroutine name |
| 1001 | $subname = $package."::".$subname |
| 1002 | unless $subname =~ /::/; |
| 1003 | ($file,$i) = (find_sub($subname) =~ /^(.*):(.*)$/); |
| 1004 | $i += 0; |
| 1005 | if ($i) { |
| 1006 | $filename = $file; |
| 1007 | *dbline = $main::{'_<' . $filename}; |
| 1008 | $had_breakpoints{$filename} |= 1; |
| 1009 | $max = $#dbline; |
| 1010 | ++$i while $dbline[$i] == 0 && $i < $max; |
| 1011 | } else { |
| 1012 | print $OUT "Subroutine $subname not found.\n"; |
| 1013 | next CMD; |
| 1014 | } |
| 1015 | } |
| 1016 | if ($i) { |
| 1017 | if ($dbline[$i] == 0) { |
| 1018 | print $OUT "Line $i not breakable.\n"; |
| 1019 | next CMD; |
| 1020 | } |
| 1021 | $dbline{$i} =~ s/($|\0)/;9$1/; # add one-time-only b.p. |
| 1022 | } |
| 1023 | for ($i=0; $i <= $stack_depth; ) { |
| 1024 | $stack[$i++] &= ~1; |
| 1025 | } |
| 1026 | last CMD; }; |
| 1027 | $cmd =~ /^r$/ && do { |
| 1028 | end_report(), next CMD if $finished and $level <= 1; |
| 1029 | $stack[$stack_depth] |= 1; |
| 1030 | $doret = $option{PrintRet} ? $stack_depth - 1 : -2; |
| 1031 | last CMD; }; |
| 1032 | $cmd =~ /^R$/ && do { |
| 1033 | print $OUT "Warning: some settings and command-line options may be lost!\n"; |
| 1034 | my (@script, @flags, $cl); |
| 1035 | push @flags, '-w' if $ini_warn; |
| 1036 | # Put all the old includes at the start to get |
| 1037 | # the same debugger. |
| 1038 | for (@ini_INC) { |
| 1039 | push @flags, '-I', $_; |
| 1040 | } |
| 1041 | push @flags, '-T' if ${^TAINT}; |
| 1042 | # Arrange for setting the old INC: |
| 1043 | set_list("PERLDB_INC", @ini_INC); |
| 1044 | if ($0 eq '-e') { |
| 1045 | for (1..$#{'::_<-e'}) { # The first line is PERL5DB |
| 1046 | chomp ($cl = ${'::_<-e'}[$_]); |
| 1047 | push @script, '-e', $cl; |
| 1048 | } |
| 1049 | } else { |
| 1050 | @script = $0; |
| 1051 | } |
| 1052 | set_list("PERLDB_HIST", |
| 1053 | $term->Features->{getHistory} |
| 1054 | ? $term->GetHistory : @hist); |
| 1055 | my @had_breakpoints = keys %had_breakpoints; |
| 1056 | set_list("PERLDB_VISITED", @had_breakpoints); |
| 1057 | set_list("PERLDB_OPT", %option); |
| 1058 | set_list("PERLDB_ON_LOAD", %break_on_load); |
| 1059 | my @hard; |
| 1060 | for (0 .. $#had_breakpoints) { |
| 1061 | my $file = $had_breakpoints[$_]; |
| 1062 | *dbline = $main::{'_<' . $file}; |
| 1063 | next unless %dbline or $postponed_file{$file}; |
| 1064 | (push @hard, $file), next |
| 1065 | if $file =~ /^\(\w*eval/; |
| 1066 | my @add; |
| 1067 | @add = %{$postponed_file{$file}} |
| 1068 | if $postponed_file{$file}; |
| 1069 | set_list("PERLDB_FILE_$_", %dbline, @add); |
| 1070 | } |
| 1071 | for (@hard) { # Yes, really-really... |
| 1072 | # Find the subroutines in this eval |
| 1073 | *dbline = $main::{'_<' . $_}; |
| 1074 | my ($quoted, $sub, %subs, $line) = quotemeta $_; |
| 1075 | for $sub (keys %sub) { |
| 1076 | next unless $sub{$sub} =~ /^$quoted:(\d+)-(\d+)$/; |
| 1077 | $subs{$sub} = [$1, $2]; |
| 1078 | } |
| 1079 | unless (%subs) { |
| 1080 | print $OUT |
| 1081 | "No subroutines in $_, ignoring breakpoints.\n"; |
| 1082 | next; |
| 1083 | } |
| 1084 | LINES: for $line (keys %dbline) { |
| 1085 | # One breakpoint per sub only: |
| 1086 | my ($offset, $sub, $found); |
| 1087 | SUBS: for $sub (keys %subs) { |
| 1088 | if ($subs{$sub}->[1] >= $line # Not after the subroutine |
| 1089 | and (not defined $offset # Not caught |
| 1090 | or $offset < 0 )) { # or badly caught |
| 1091 | $found = $sub; |
| 1092 | $offset = $line - $subs{$sub}->[0]; |
| 1093 | $offset = "+$offset", last SUBS if $offset >= 0; |
| 1094 | } |
| 1095 | } |
| 1096 | if (defined $offset) { |
| 1097 | $postponed{$found} = |
| 1098 | "break $offset if $dbline{$line}"; |
| 1099 | } else { |
| 1100 | print $OUT "Breakpoint in $_:$line ignored: after all the subroutines.\n"; |
| 1101 | } |
| 1102 | } |
| 1103 | } |
| 1104 | set_list("PERLDB_POSTPONE", %postponed); |
| 1105 | set_list("PERLDB_PRETYPE", @$pretype); |
| 1106 | set_list("PERLDB_PRE", @$pre); |
| 1107 | set_list("PERLDB_POST", @$post); |
| 1108 | set_list("PERLDB_TYPEAHEAD", @typeahead); |
| 1109 | $ENV{PERLDB_RESTART} = 1; |
| 1110 | delete $ENV{PERLDB_PIDS}; # Restore ini state |
| 1111 | $ENV{PERLDB_PIDS} = $ini_pids if defined $ini_pids; |
| 1112 | #print "$^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS"; |
| 1113 | exec($^X, '-d', @flags, @script, ($slave_editor ? '-emacs' : ()), @ARGS) || |
| 1114 | print $OUT "exec failed: $!\n"; |
| 1115 | last CMD; }; |
| 1116 | $cmd =~ /^T$/ && do { |
| 1117 | print_trace($OUT, 1); # skip DB |
| 1118 | next CMD; }; |
| 1119 | $cmd =~ /^w\b\s*(.*)/s && do { &cmd_w($1); next CMD; }; |
| 1120 | $cmd =~ /^W\b\s*(.*)/s && do { &cmd_W($1); next CMD; }; |
| 1121 | $cmd =~ /^\/(.*)$/ && do { |
| 1122 | $inpat = $1; |
| 1123 | $inpat =~ s:([^\\])/$:$1:; |
| 1124 | if ($inpat ne "") { |
| 1125 | # squelch the sigmangler |
| 1126 | local $SIG{__DIE__}; |
| 1127 | local $SIG{__WARN__}; |
| 1128 | eval '$inpat =~ m'."\a$inpat\a"; |
| 1129 | if ($@ ne "") { |
| 1130 | print $OUT "$@"; |
| 1131 | next CMD; |
| 1132 | } |
| 1133 | $pat = $inpat; |
| 1134 | } |
| 1135 | $end = $start; |
| 1136 | $incr = -1; |
| 1137 | eval ' |
| 1138 | for (;;) { |
| 1139 | ++$start; |
| 1140 | $start = 1 if ($start > $max); |
| 1141 | last if ($start == $end); |
| 1142 | if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { |
| 1143 | if ($slave_editor) { |
| 1144 | print $OUT "\032\032$filename:$start:0\n"; |
| 1145 | } else { |
| 1146 | print $OUT "$start:\t", $dbline[$start], "\n"; |
| 1147 | } |
| 1148 | last; |
| 1149 | } |
| 1150 | } '; |
| 1151 | print $OUT "/$pat/: not found\n" if ($start == $end); |
| 1152 | next CMD; }; |
| 1153 | $cmd =~ /^\?(.*)$/ && do { |
| 1154 | $inpat = $1; |
| 1155 | $inpat =~ s:([^\\])\?$:$1:; |
| 1156 | if ($inpat ne "") { |
| 1157 | # squelch the sigmangler |
| 1158 | local $SIG{__DIE__}; |
| 1159 | local $SIG{__WARN__}; |
| 1160 | eval '$inpat =~ m'."\a$inpat\a"; |
| 1161 | if ($@ ne "") { |
| 1162 | print $OUT $@; |
| 1163 | next CMD; |
| 1164 | } |
| 1165 | $pat = $inpat; |
| 1166 | } |
| 1167 | $end = $start; |
| 1168 | $incr = -1; |
| 1169 | eval ' |
| 1170 | for (;;) { |
| 1171 | --$start; |
| 1172 | $start = $max if ($start <= 0); |
| 1173 | last if ($start == $end); |
| 1174 | if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { |
| 1175 | if ($slave_editor) { |
| 1176 | print $OUT "\032\032$filename:$start:0\n"; |
| 1177 | } else { |
| 1178 | print $OUT "$start:\t", $dbline[$start], "\n"; |
| 1179 | } |
| 1180 | last; |
| 1181 | } |
| 1182 | } '; |
| 1183 | print $OUT "?$pat?: not found\n" if ($start == $end); |
| 1184 | next CMD; }; |
| 1185 | $cmd =~ /^$rc+\s*(-)?(\d+)?$/ && do { |
| 1186 | pop(@hist) if length($cmd) > 1; |
| 1187 | $i = $1 ? ($#hist-($2||1)) : ($2||$#hist); |
| 1188 | $cmd = $hist[$i]; |
| 1189 | print $OUT $cmd, "\n"; |
| 1190 | redo CMD; }; |
| 1191 | $cmd =~ /^$sh$sh\s*([\x00-\xff]*)/ && do { |
| 1192 | &system($1); |
| 1193 | next CMD; }; |
| 1194 | $cmd =~ /^$rc([^$rc].*)$/ && do { |
| 1195 | $pat = "^$1"; |
| 1196 | pop(@hist) if length($cmd) > 1; |
| 1197 | for ($i = $#hist; $i; --$i) { |
| 1198 | last if $hist[$i] =~ /$pat/; |
| 1199 | } |
| 1200 | if (!$i) { |
| 1201 | print $OUT "No such command!\n\n"; |
| 1202 | next CMD; |
| 1203 | } |
| 1204 | $cmd = $hist[$i]; |
| 1205 | print $OUT $cmd, "\n"; |
| 1206 | redo CMD; }; |
| 1207 | $cmd =~ /^$sh$/ && do { |
| 1208 | &system($ENV{SHELL}||"/bin/sh"); |
| 1209 | next CMD; }; |
| 1210 | $cmd =~ /^$sh\s*([\x00-\xff]*)/ && do { |
| 1211 | # XXX: using csh or tcsh destroys sigint retvals! |
| 1212 | #&system($1); # use this instead |
| 1213 | &system($ENV{SHELL}||"/bin/sh","-c",$1); |
| 1214 | next CMD; }; |
| 1215 | $cmd =~ /^H\b\s*(-(\d+))?/ && do { |
| 1216 | $end = $2 ? ($#hist-$2) : 0; |
| 1217 | $hist = 0 if $hist < 0; |
| 1218 | for ($i=$#hist; $i>$end; $i--) { |
| 1219 | print $OUT "$i: ",$hist[$i],"\n" |
| 1220 | unless $hist[$i] =~ /^.?$/; |
| 1221 | }; |
| 1222 | next CMD; }; |
| 1223 | $cmd =~ /^(?:man|(?:perl)?doc)\b(?:\s+([^(]*))?$/ && do { |
| 1224 | runman($1); |
| 1225 | next CMD; }; |
| 1226 | $cmd =~ s/^p$/print {\$DB::OUT} \$_/; |
| 1227 | $cmd =~ s/^p\b/print {\$DB::OUT} /; |
| 1228 | $cmd =~ s/^=\s*// && do { |
| 1229 | my @keys; |
| 1230 | if (length $cmd == 0) { |
| 1231 | @keys = sort keys %alias; |
| 1232 | } elsif (my($k,$v) = ($cmd =~ /^(\S+)\s+(\S.*)/)) { |
| 1233 | # can't use $_ or kill //g state |
| 1234 | for my $x ($k, $v) { $x =~ s/\a/\\a/g } |
| 1235 | $alias{$k} = "s\a$k\a$v\a"; |
| 1236 | # squelch the sigmangler |
| 1237 | local $SIG{__DIE__}; |
| 1238 | local $SIG{__WARN__}; |
| 1239 | unless (eval "sub { s\a$k\a$v\a }; 1") { |
| 1240 | print $OUT "Can't alias $k to $v: $@\n"; |
| 1241 | delete $alias{$k}; |
| 1242 | next CMD; |
| 1243 | } |
| 1244 | @keys = ($k); |
| 1245 | } else { |
| 1246 | @keys = ($cmd); |
| 1247 | } |
| 1248 | for my $k (@keys) { |
| 1249 | if ((my $v = $alias{$k}) =~ s\as\a$k\a(.*)\a$\a1\a) { |
| 1250 | print $OUT "$k\t= $1\n"; |
| 1251 | } |
| 1252 | elsif (defined $alias{$k}) { |
| 1253 | print $OUT "$k\t$alias{$k}\n"; |
| 1254 | } |
| 1255 | else { |
| 1256 | print "No alias for $k\n"; |
| 1257 | } |
| 1258 | } |
| 1259 | next CMD; }; |
| 1260 | $cmd =~ /^\@\s*(.*\S)/ && do { |
| 1261 | if (open my $fh, $1) { |
| 1262 | push @cmdfhs, $fh; |
| 1263 | } else { |
| 1264 | &warn("Can't execute `$1': $!\n"); |
| 1265 | } |
| 1266 | next CMD; }; |
| 1267 | $cmd =~ /^\|\|?\s*[^|]/ && do { |
| 1268 | if ($pager =~ /^\|/) { |
| 1269 | open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT"); |
| 1270 | open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); |
| 1271 | } else { |
| 1272 | open(SAVEOUT,">&OUT") || &warn("Can't save DB::OUT"); |
| 1273 | } |
| 1274 | fix_less(); |
| 1275 | unless ($piped=open(OUT,$pager)) { |
| 1276 | &warn("Can't pipe output to `$pager'"); |
| 1277 | if ($pager =~ /^\|/) { |
| 1278 | open(OUT,">&STDOUT") # XXX: lost message |
| 1279 | || &warn("Can't restore DB::OUT"); |
| 1280 | open(STDOUT,">&SAVEOUT") |
| 1281 | || &warn("Can't restore STDOUT"); |
| 1282 | close(SAVEOUT); |
| 1283 | } else { |
| 1284 | open(OUT,">&STDOUT") # XXX: lost message |
| 1285 | || &warn("Can't restore DB::OUT"); |
| 1286 | } |
| 1287 | next CMD; |
| 1288 | } |
| 1289 | $SIG{PIPE}= \&DB::catch if $pager =~ /^\|/ |
| 1290 | && ("" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE}); |
| 1291 | $selected= select(OUT); |
| 1292 | $|= 1; |
| 1293 | select( $selected ), $selected= "" unless $cmd =~ /^\|\|/; |
| 1294 | $cmd =~ s/^\|+\s*//; |
| 1295 | redo PIPE; |
| 1296 | }; |
| 1297 | # XXX Local variants do not work! |
| 1298 | $cmd =~ s/^t\s/\$DB::trace |= 1;\n/; |
| 1299 | $cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'}; |
| 1300 | $cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'}; |
| 1301 | } # PIPE: |
| 1302 | $evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval; |
| 1303 | if ($onetimeDump) { |
| 1304 | $onetimeDump = undef; |
| 1305 | $onetimedumpDepth = undef; |
| 1306 | } elsif ($term_pid == $$) { |
| 1307 | print $OUT "\n"; |
| 1308 | } |
| 1309 | } continue { # CMD: |
| 1310 | if ($piped) { |
| 1311 | if ($pager =~ /^\|/) { |
| 1312 | $? = 0; |
| 1313 | # we cannot warn here: the handle is missing --tchrist |
| 1314 | close(OUT) || print SAVEOUT "\nCan't close DB::OUT\n"; |
| 1315 | |
| 1316 | # most of the $? crud was coping with broken cshisms |
| 1317 | if ($?) { |
| 1318 | print SAVEOUT "Pager `$pager' failed: "; |
| 1319 | if ($? == -1) { |
| 1320 | print SAVEOUT "shell returned -1\n"; |
| 1321 | } elsif ($? >> 8) { |
| 1322 | print SAVEOUT |
| 1323 | ( $? & 127 ) ? " (SIG#".($?&127).")" : "", |
| 1324 | ( $? & 128 ) ? " -- core dumped" : "", "\n"; |
| 1325 | } else { |
| 1326 | print SAVEOUT "status ", ($? >> 8), "\n"; |
| 1327 | } |
| 1328 | } |
| 1329 | |
| 1330 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); |
| 1331 | open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); |
| 1332 | $SIG{PIPE} = "DEFAULT" if $SIG{PIPE} eq \&DB::catch; |
| 1333 | # Will stop ignoring SIGPIPE if done like nohup(1) |
| 1334 | # does SIGINT but Perl doesn't give us a choice. |
| 1335 | } else { |
| 1336 | open(OUT,">&SAVEOUT") || &warn("Can't restore DB::OUT"); |
| 1337 | } |
| 1338 | close(SAVEOUT); |
| 1339 | select($selected), $selected= "" unless $selected eq ""; |
| 1340 | $piped= ""; |
| 1341 | } |
| 1342 | } # CMD: |
| 1343 | $fall_off_end = 1 unless defined $cmd; # Emulate `q' on EOF |
| 1344 | foreach $evalarg (@$post) { |
| 1345 | &eval; |
| 1346 | } |
| 1347 | } # if ($single || $signal) |
| 1348 | ($@, $!, $^E, $,, $/, $\, $^W) = @saved; |
| 1349 | (); |
| 1350 | } |
| 1351 | |
| 1352 | # The following code may be executed now: |
| 1353 | # BEGIN {warn 4} |
| 1354 | |
| 1355 | sub sub { |
| 1356 | my ($al, $ret, @ret) = ""; |
| 1357 | if (length($sub) > 10 && substr($sub, -10, 10) eq '::AUTOLOAD') { |
| 1358 | $al = " for $$sub"; |
| 1359 | } |
| 1360 | local $stack_depth = $stack_depth + 1; # Protect from non-local exits |
| 1361 | $#stack = $stack_depth; |
| 1362 | $stack[-1] = $single; |
| 1363 | $single &= 1; |
| 1364 | $single |= 4 if $stack_depth == $deep; |
| 1365 | ($frame & 4 |
| 1366 | ? ( print_lineinfo(' ' x ($stack_depth - 1), "in "), |
| 1367 | # Why -1? But it works! :-( |
| 1368 | print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) |
| 1369 | : print_lineinfo(' ' x ($stack_depth - 1), "entering $sub$al\n")) if $frame; |
| 1370 | if (wantarray) { |
| 1371 | @ret = &$sub; |
| 1372 | $single |= $stack[$stack_depth--]; |
| 1373 | ($frame & 4 |
| 1374 | ? ( print_lineinfo(' ' x $stack_depth, "out "), |
| 1375 | print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) |
| 1376 | : print_lineinfo(' ' x $stack_depth, "exited $sub$al\n")) if $frame & 2; |
| 1377 | if ($doret eq $stack_depth or $frame & 16) { |
| 1378 | local $\ = ''; |
| 1379 | my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO); |
| 1380 | print $fh ' ' x $stack_depth if $frame & 16; |
| 1381 | print $fh "list context return from $sub:\n"; |
| 1382 | dumpit($fh, \@ret ); |
| 1383 | $doret = -2; |
| 1384 | } |
| 1385 | @ret; |
| 1386 | } else { |
| 1387 | if (defined wantarray) { |
| 1388 | $ret = &$sub; |
| 1389 | } else { |
| 1390 | &$sub; undef $ret; |
| 1391 | }; |
| 1392 | $single |= $stack[$stack_depth--]; |
| 1393 | ($frame & 4 |
| 1394 | ? ( print_lineinfo(' ' x $stack_depth, "out "), |
| 1395 | print_trace($LINEINFO, -1, 1, 1, "$sub$al") ) |
| 1396 | : print_lineinfo(' ' x $stack_depth, "exited $sub$al\n")) if $frame & 2; |
| 1397 | if ($doret eq $stack_depth or $frame & 16 and defined wantarray) { |
| 1398 | local $\ = ''; |
| 1399 | my $fh = ($doret eq $stack_depth ? $OUT : $LINEINFO); |
| 1400 | print $fh (' ' x $stack_depth) if $frame & 16; |
| 1401 | print $fh (defined wantarray |
| 1402 | ? "scalar context return from $sub: " |
| 1403 | : "void context return from $sub\n"); |
| 1404 | dumpit( $fh, $ret ) if defined wantarray; |
| 1405 | $doret = -2; |
| 1406 | } |
| 1407 | $ret; |
| 1408 | } |
| 1409 | } |
| 1410 | |
| 1411 | ### The API section |
| 1412 | |
| 1413 | ### Functions with multiple modes of failure die on error, the rest |
| 1414 | ### returns FALSE on error. |
| 1415 | ### User-interface functions cmd_* output error message. |
| 1416 | |
| 1417 | ### Note all cmd_[a-zA-Z]'s require $line, $dblineno as first arguments |
| 1418 | |
| 1419 | my %set = ( # |
| 1420 | 'pre580' => { |
| 1421 | 'a' => 'pre580_a', |
| 1422 | 'A' => 'pre580_null', |
| 1423 | 'b' => 'pre580_b', |
| 1424 | 'B' => 'pre580_null', |
| 1425 | 'd' => 'pre580_null', |
| 1426 | 'D' => 'pre580_D', |
| 1427 | 'h' => 'pre580_h', |
| 1428 | 'M' => 'pre580_null', |
| 1429 | 'O' => 'o', |
| 1430 | 'o' => 'pre580_null', |
| 1431 | 'v' => 'M', |
| 1432 | 'w' => 'v', |
| 1433 | 'W' => 'pre580_W', |
| 1434 | }, |
| 1435 | ); |
| 1436 | |
| 1437 | sub cmd_wrapper { |
| 1438 | my $cmd = shift; |
| 1439 | my $line = shift; |
| 1440 | my $dblineno = shift; |
| 1441 | |
| 1442 | # with this level of indirection we can wrap |
| 1443 | # to old (pre580) or other command sets easily |
| 1444 | # |
| 1445 | my $call = 'cmd_'.( |
| 1446 | $set{$CommandSet}{$cmd} || $cmd |
| 1447 | ); |
| 1448 | # print "cmd_wrapper($cmd): $CommandSet($set{$CommandSet}{$cmd}) => call($call)\n"; |
| 1449 | |
| 1450 | return &$call($line, $dblineno); |
| 1451 | } |
| 1452 | |
| 1453 | sub cmd_a { |
| 1454 | my $line = shift || ''; # [.|line] expr |
| 1455 | my $dbline = shift; $line =~ s/^(\.|(?:[^\d]))/$dbline/; |
| 1456 | if ($line =~ /^\s*(\d*)\s*(\S.+)/) { |
| 1457 | my ($lineno, $expr) = ($1, $2); |
| 1458 | if (length $expr) { |
| 1459 | if ($dbline[$lineno] == 0) { |
| 1460 | print $OUT "Line $lineno($dbline[$lineno]) does not have an action?\n"; |
| 1461 | } else { |
| 1462 | $had_breakpoints{$filename} |= 2; |
| 1463 | $dbline{$lineno} =~ s/\0[^\0]*//; |
| 1464 | $dbline{$lineno} .= "\0" . action($expr); |
| 1465 | } |
| 1466 | } |
| 1467 | } else { |
| 1468 | print $OUT "Adding an action requires an optional lineno and an expression\n"; # hint |
| 1469 | } |
| 1470 | } |
| 1471 | |
| 1472 | sub cmd_A { |
| 1473 | my $line = shift || ''; |
| 1474 | my $dbline = shift; $line =~ s/^\./$dbline/; |
| 1475 | if ($line eq '*') { |
| 1476 | eval { &delete_action(); 1 } or print $OUT $@ and return; |
| 1477 | } elsif ($line =~ /^(\S.*)/) { |
| 1478 | eval { &delete_action($1); 1 } or print $OUT $@ and return; |
| 1479 | } else { |
| 1480 | print $OUT "Deleting an action requires a line number, or '*' for all\n"; # hint |
| 1481 | } |
| 1482 | } |
| 1483 | |
| 1484 | sub delete_action { |
| 1485 | my $i = shift; |
| 1486 | if (defined($i)) { |
| 1487 | die "Line $i has no action .\n" if $dbline[$i] == 0; |
| 1488 | $dbline{$i} =~ s/\0[^\0]*//; # \^a |
| 1489 | delete $dbline{$i} if $dbline{$i} eq ''; |
| 1490 | } else { |
| 1491 | print $OUT "Deleting all actions...\n"; |
| 1492 | for my $file (keys %had_breakpoints) { |
| 1493 | local *dbline = $main::{'_<' . $file}; |
| 1494 | my $max = $#dbline; |
| 1495 | my $was; |
| 1496 | for ($i = 1; $i <= $max ; $i++) { |
| 1497 | if (defined $dbline{$i}) { |
| 1498 | $dbline{$i} =~ s/\0[^\0]*//; |
| 1499 | delete $dbline{$i} if $dbline{$i} eq ''; |
| 1500 | } |
| 1501 | unless ($had_breakpoints{$file} &= ~2) { |
| 1502 | delete $had_breakpoints{$file}; |
| 1503 | } |
| 1504 | } |
| 1505 | } |
| 1506 | } |
| 1507 | } |
| 1508 | |
| 1509 | sub cmd_b { |
| 1510 | my $line = shift; # [.|line] [cond] |
| 1511 | my $dbline = shift; $line =~ s/^\./$dbline/; |
| 1512 | if ($line =~ /^\s*$/) { |
| 1513 | &cmd_b_line($dbline, 1); |
| 1514 | } elsif ($line =~ /^load\b\s*(.*)/) { |
| 1515 | my $file = $1; $file =~ s/\s+$//; |
| 1516 | &cmd_b_load($file); |
| 1517 | } elsif ($line =~ /^(postpone|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/) { |
| 1518 | my $cond = length $3 ? $3 : '1'; |
| 1519 | my ($subname, $break) = ($2, $1 eq 'postpone'); |
| 1520 | $subname =~ s/\'/::/g; |
| 1521 | $subname = "${'package'}::" . $subname unless $subname =~ /::/; |
| 1522 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
| 1523 | $postponed{$subname} = $break ? "break +0 if $cond" : "compile"; |
| 1524 | } elsif ($line =~ /^([':A-Za-z_][':\w]*(?:\[.*\])?)\s*(.*)/) { |
| 1525 | $subname = $1; |
| 1526 | $cond = length $2 ? $2 : '1'; |
| 1527 | &cmd_b_sub($subname, $cond); |
| 1528 | } elsif ($line =~ /^(\d*)\s*(.*)/) { |
| 1529 | $line = $1 || $dbline; |
| 1530 | $cond = length $2 ? $2 : '1'; |
| 1531 | &cmd_b_line($line, $cond); |
| 1532 | } else { |
| 1533 | print "confused by line($line)?\n"; |
| 1534 | } |
| 1535 | } |
| 1536 | |
| 1537 | sub break_on_load { |
| 1538 | my $file = shift; |
| 1539 | $break_on_load{$file} = 1; |
| 1540 | $had_breakpoints{$file} |= 1; |
| 1541 | } |
| 1542 | |
| 1543 | sub report_break_on_load { |
| 1544 | sort keys %break_on_load; |
| 1545 | } |
| 1546 | |
| 1547 | sub cmd_b_load { |
| 1548 | my $file = shift; |
| 1549 | my @files; |
| 1550 | { |
| 1551 | push @files, $file; |
| 1552 | push @files, $::INC{$file} if $::INC{$file}; |
| 1553 | $file .= '.pm', redo unless $file =~ /\./; |
| 1554 | } |
| 1555 | break_on_load($_) for @files; |
| 1556 | @files = report_break_on_load; |
| 1557 | local $\ = ''; |
| 1558 | local $" = ' '; |
| 1559 | print $OUT "Will stop on load of `@files'.\n"; |
| 1560 | } |
| 1561 | |
| 1562 | $filename_error = ''; |
| 1563 | |
| 1564 | sub breakable_line { |
| 1565 | my ($from, $to) = @_; |
| 1566 | my $i = $from; |
| 1567 | if (@_ >= 2) { |
| 1568 | my $delta = $from < $to ? +1 : -1; |
| 1569 | my $limit = $delta > 0 ? $#dbline : 1; |
| 1570 | $limit = $to if ($limit - $to) * $delta > 0; |
| 1571 | $i += $delta while $dbline[$i] == 0 and ($limit - $i) * $delta > 0; |
| 1572 | } |
| 1573 | return $i unless $dbline[$i] == 0; |
| 1574 | my ($pl, $upto) = ('', ''); |
| 1575 | ($pl, $upto) = ('s', "..$to") if @_ >=2 and $from != $to; |
| 1576 | die "Line$pl $from$upto$filename_error not breakable\n"; |
| 1577 | } |
| 1578 | |
| 1579 | sub breakable_line_in_filename { |
| 1580 | my ($f) = shift; |
| 1581 | local *dbline = $main::{'_<' . $f}; |
| 1582 | local $filename_error = " of `$f'"; |
| 1583 | breakable_line(@_); |
| 1584 | } |
| 1585 | |
| 1586 | sub break_on_line { |
| 1587 | my ($i, $cond) = @_; |
| 1588 | $cond = 1 unless @_ >= 2; |
| 1589 | my $inii = $i; |
| 1590 | my $after = ''; |
| 1591 | my $pl = ''; |
| 1592 | die "Line $i$filename_error not breakable.\n" if $dbline[$i] == 0; |
| 1593 | $had_breakpoints{$filename} |= 1; |
| 1594 | if ($dbline{$i}) { $dbline{$i} =~ s/^[^\0]*/$cond/; } |
| 1595 | else { $dbline{$i} = $cond; } |
| 1596 | } |
| 1597 | |
| 1598 | sub cmd_b_line { |
| 1599 | eval { break_on_line(@_); 1 } or do { |
| 1600 | local $\ = ''; |
| 1601 | print $OUT $@ and return; |
| 1602 | }; |
| 1603 | } |
| 1604 | |
| 1605 | sub break_on_filename_line { |
| 1606 | my ($f, $i, $cond) = @_; |
| 1607 | $cond = 1 unless @_ >= 3; |
| 1608 | local *dbline = $main::{'_<' . $f}; |
| 1609 | local $filename_error = " of `$f'"; |
| 1610 | local $filename = $f; |
| 1611 | break_on_line($i, $cond); |
| 1612 | } |
| 1613 | |
| 1614 | sub break_on_filename_line_range { |
| 1615 | my ($f, $from, $to, $cond) = @_; |
| 1616 | my $i = breakable_line_in_filename($f, $from, $to); |
| 1617 | $cond = 1 unless @_ >= 3; |
| 1618 | break_on_filename_line($f,$i,$cond); |
| 1619 | } |
| 1620 | |
| 1621 | sub subroutine_filename_lines { |
| 1622 | my ($subname,$cond) = @_; |
| 1623 | # Filename below can contain ':' |
| 1624 | find_sub($subname) =~ /^(.*):(\d+)-(\d+)$/; |
| 1625 | } |
| 1626 | |
| 1627 | sub break_subroutine { |
| 1628 | my $subname = shift; |
| 1629 | my ($file,$s,$e) = subroutine_filename_lines($subname) or |
| 1630 | die "Subroutine $subname not found.\n"; |
| 1631 | $cond = 1 unless @_ >= 2; |
| 1632 | break_on_filename_line_range($file,$s,$e,@_); |
| 1633 | } |
| 1634 | |
| 1635 | sub cmd_b_sub { |
| 1636 | my ($subname,$cond) = @_; |
| 1637 | $cond = 1 unless @_ >= 2; |
| 1638 | unless (ref $subname eq 'CODE') { |
| 1639 | $subname =~ s/\'/::/g; |
| 1640 | my $s = $subname; |
| 1641 | $subname = "${'package'}::" . $subname |
| 1642 | unless $subname =~ /::/; |
| 1643 | $subname = "CORE::GLOBAL::$s" |
| 1644 | if not defined &$subname and $s !~ /::/ and defined &{"CORE::GLOBAL::$s"}; |
| 1645 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
| 1646 | } |
| 1647 | eval { break_subroutine($subname,$cond); 1 } or do { |
| 1648 | local $\ = ''; |
| 1649 | print $OUT $@ and return; |
| 1650 | } |
| 1651 | } |
| 1652 | |
| 1653 | sub cmd_B { |
| 1654 | my $line = ($_[0] =~ /^\./) ? $dbline : shift || ''; |
| 1655 | my $dbline = shift; $line =~ s/^\./$dbline/; |
| 1656 | if ($line eq '*') { |
| 1657 | eval { &delete_breakpoint(); 1 } or print $OUT $@ and return; |
| 1658 | } elsif ($line =~ /^(\S.*)/) { |
| 1659 | eval { &delete_breakpoint($line || $dbline); 1 } or do { |
| 1660 | local $\ = ''; |
| 1661 | print $OUT $@ and return; |
| 1662 | }; |
| 1663 | } else { |
| 1664 | print $OUT "Deleting a breakpoint requires a line number, or '*' for all\n"; # hint |
| 1665 | } |
| 1666 | } |
| 1667 | |
| 1668 | sub delete_breakpoint { |
| 1669 | my $i = shift; |
| 1670 | if (defined($i)) { |
| 1671 | die "Line $i not breakable.\n" if $dbline[$i] == 0; |
| 1672 | $dbline{$i} =~ s/^[^\0]*//; |
| 1673 | delete $dbline{$i} if $dbline{$i} eq ''; |
| 1674 | } else { |
| 1675 | print $OUT "Deleting all breakpoints...\n"; |
| 1676 | for my $file (keys %had_breakpoints) { |
| 1677 | local *dbline = $main::{'_<' . $file}; |
| 1678 | my $max = $#dbline; |
| 1679 | my $was; |
| 1680 | for ($i = 1; $i <= $max ; $i++) { |
| 1681 | if (defined $dbline{$i}) { |
| 1682 | $dbline{$i} =~ s/^[^\0]+//; |
| 1683 | if ($dbline{$i} =~ s/^\0?$//) { |
| 1684 | delete $dbline{$i}; |
| 1685 | } |
| 1686 | } |
| 1687 | } |
| 1688 | if (not $had_breakpoints{$file} &= ~1) { |
| 1689 | delete $had_breakpoints{$file}; |
| 1690 | } |
| 1691 | } |
| 1692 | undef %postponed; |
| 1693 | undef %postponed_file; |
| 1694 | undef %break_on_load; |
| 1695 | } |
| 1696 | } |
| 1697 | |
| 1698 | sub cmd_stop { # As on ^C, but not signal-safy. |
| 1699 | $signal = 1; |
| 1700 | } |
| 1701 | |
| 1702 | sub cmd_h { |
| 1703 | my $line = shift || ''; |
| 1704 | if ($line =~ /^h\s*/) { |
| 1705 | print_help($help); |
| 1706 | } elsif ($line =~ /^(\S.*)$/) { |
| 1707 | # support long commands; otherwise bogus errors |
| 1708 | # happen when you ask for h on <CR> for example |
| 1709 | my $asked = $1; # for proper errmsg |
| 1710 | my $qasked = quotemeta($asked); # for searching |
| 1711 | # XXX: finds CR but not <CR> |
| 1712 | if ($help =~ /^<?(?:[IB]<)$qasked/m) { |
| 1713 | while ($help =~ /^(<?(?:[IB]<)$qasked([\s\S]*?)\n)(?!\s)/mg) { |
| 1714 | print_help($1); |
| 1715 | } |
| 1716 | } else { |
| 1717 | print_help("B<$asked> is not a debugger command.\n"); |
| 1718 | } |
| 1719 | } else { |
| 1720 | print_help($summary); |
| 1721 | } |
| 1722 | } |
| 1723 | |
| 1724 | sub cmd_l { |
| 1725 | my $line = shift; |
| 1726 | $line =~ s/^-\s*$/-/; |
| 1727 | if ($line =~ /^(\$.*)/s) { |
| 1728 | $evalarg = $2; |
| 1729 | my ($s) = &eval; |
| 1730 | print($OUT "Error: $@\n"), next CMD if $@; |
| 1731 | $s = CvGV_name($s); |
| 1732 | print($OUT "Interpreted as: $1 $s\n"); |
| 1733 | $line = "$1 $s"; |
| 1734 | &cmd_l($s); |
| 1735 | } elsif ($line =~ /^([\':A-Za-z_][\':\w]*(\[.*\])?)/s) { |
| 1736 | my $s = $subname = $1; |
| 1737 | $subname =~ s/\'/::/; |
| 1738 | $subname = $package."::".$subname |
| 1739 | unless $subname =~ /::/; |
| 1740 | $subname = "CORE::GLOBAL::$s" |
| 1741 | if not defined &$subname and $s !~ /::/ |
| 1742 | and defined &{"CORE::GLOBAL::$s"}; |
| 1743 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
| 1744 | @pieces = split(/:/,find_sub($subname) || $sub{$subname}); |
| 1745 | $subrange = pop @pieces; |
| 1746 | $file = join(':', @pieces); |
| 1747 | if ($file ne $filename) { |
| 1748 | print $OUT "Switching to file '$file'.\n" |
| 1749 | unless $slave_editor; |
| 1750 | *dbline = $main::{'_<' . $file}; |
| 1751 | $max = $#dbline; |
| 1752 | $filename = $file; |
| 1753 | } |
| 1754 | if ($subrange) { |
| 1755 | if (eval($subrange) < -$window) { |
| 1756 | $subrange =~ s/-.*/+/; |
| 1757 | } |
| 1758 | $line = $subrange; |
| 1759 | &cmd_l($subrange); |
| 1760 | } else { |
| 1761 | print $OUT "Subroutine $subname not found.\n"; |
| 1762 | } |
| 1763 | } elsif ($line =~ /^\s*$/) { |
| 1764 | $incr = $window - 1; |
| 1765 | $line = $start . '-' . ($start + $incr); |
| 1766 | &cmd_l($line); |
| 1767 | } elsif ($line =~ /^(\d*)\+(\d*)$/) { |
| 1768 | $start = $1 if $1; |
| 1769 | $incr = $2; |
| 1770 | $incr = $window - 1 unless $incr; |
| 1771 | $line = $start . '-' . ($start + $incr); |
| 1772 | &cmd_l($line); |
| 1773 | } elsif ($line =~ /^((-?[\d\$\.]+)([-,]([\d\$\.]+))?)?/) { |
| 1774 | $end = (!defined $2) ? $max : ($4 ? $4 : $2); |
| 1775 | $end = $max if $end > $max; |
| 1776 | $i = $2; |
| 1777 | $i = $line if $i eq '.'; |
| 1778 | $i = 1 if $i < 1; |
| 1779 | $incr = $end - $i; |
| 1780 | if ($slave_editor) { |
| 1781 | print $OUT "\032\032$filename:$i:0\n"; |
| 1782 | $i = $end; |
| 1783 | } else { |
| 1784 | for (; $i <= $end; $i++) { |
| 1785 | my ($stop,$action); |
| 1786 | ($stop,$action) = split(/\0/, $dbline{$i}) if |
| 1787 | $dbline{$i}; |
| 1788 | $arrow = ($i==$line |
| 1789 | and $filename eq $filename_ini) |
| 1790 | ? '==>' |
| 1791 | : ($dbline[$i]+0 ? ':' : ' ') ; |
| 1792 | $arrow .= 'b' if $stop; |
| 1793 | $arrow .= 'a' if $action; |
| 1794 | print $OUT "$i$arrow\t", $dbline[$i]; |
| 1795 | $i++, last if $signal; |
| 1796 | } |
| 1797 | print $OUT "\n" unless $dbline[$i-1] =~ /\n$/; |
| 1798 | } |
| 1799 | $start = $i; # remember in case they want more |
| 1800 | $start = $max if $start > $max; |
| 1801 | } |
| 1802 | } |
| 1803 | |
| 1804 | sub cmd_L { |
| 1805 | my $arg = shift || 'abw'; $arg = 'abw' unless $CommandSet eq '580'; # sigh... |
| 1806 | my $action_wanted = ($arg =~ /a/) ? 1 : 0; |
| 1807 | my $break_wanted = ($arg =~ /b/) ? 1 : 0; |
| 1808 | my $watch_wanted = ($arg =~ /w/) ? 1 : 0; |
| 1809 | |
| 1810 | if ($break_wanted or $action_wanted) { |
| 1811 | for my $file (keys %had_breakpoints) { |
| 1812 | local *dbline = $main::{'_<' . $file}; |
| 1813 | my $max = $#dbline; |
| 1814 | my $was; |
| 1815 | for ($i = 1; $i <= $max; $i++) { |
| 1816 | if (defined $dbline{$i}) { |
| 1817 | print $OUT "$file:\n" unless $was++; |
| 1818 | print $OUT " $i:\t", $dbline[$i]; |
| 1819 | ($stop,$action) = split(/\0/, $dbline{$i}); |
| 1820 | print $OUT " break if (", $stop, ")\n" |
| 1821 | if $stop and $break_wanted; |
| 1822 | print $OUT " action: ", $action, "\n" |
| 1823 | if $action and $action_wanted; |
| 1824 | last if $signal; |
| 1825 | } |
| 1826 | } |
| 1827 | } |
| 1828 | } |
| 1829 | if (%postponed and $break_wanted) { |
| 1830 | print $OUT "Postponed breakpoints in subroutines:\n"; |
| 1831 | my $subname; |
| 1832 | for $subname (keys %postponed) { |
| 1833 | print $OUT " $subname\t$postponed{$subname}\n"; |
| 1834 | last if $signal; |
| 1835 | } |
| 1836 | } |
| 1837 | my @have = map { # Combined keys |
| 1838 | keys %{$postponed_file{$_}} |
| 1839 | } keys %postponed_file; |
| 1840 | if (@have and ($break_wanted or $action_wanted)) { |
| 1841 | print $OUT "Postponed breakpoints in files:\n"; |
| 1842 | my ($file, $line); |
| 1843 | for $file (keys %postponed_file) { |
| 1844 | my $db = $postponed_file{$file}; |
| 1845 | print $OUT " $file:\n"; |
| 1846 | for $line (sort {$a <=> $b} keys %$db) { |
| 1847 | print $OUT " $line:\n"; |
| 1848 | my ($stop,$action) = split(/\0/, $$db{$line}); |
| 1849 | print $OUT " break if (", $stop, ")\n" |
| 1850 | if $stop and $break_wanted; |
| 1851 | print $OUT " action: ", $action, "\n" |
| 1852 | if $action and $action_wanted; |
| 1853 | last if $signal; |
| 1854 | } |
| 1855 | last if $signal; |
| 1856 | } |
| 1857 | } |
| 1858 | if (%break_on_load and $break_wanted) { |
| 1859 | print $OUT "Breakpoints on load:\n"; |
| 1860 | my $file; |
| 1861 | for $file (keys %break_on_load) { |
| 1862 | print $OUT " $file\n"; |
| 1863 | last if $signal; |
| 1864 | } |
| 1865 | } |
| 1866 | if ($watch_wanted) { |
| 1867 | if ($trace & 2) { |
| 1868 | print $OUT "Watch-expressions:\n" if @to_watch; |
| 1869 | for my $expr (@to_watch) { |
| 1870 | print $OUT " $expr\n"; |
| 1871 | last if $signal; |
| 1872 | } |
| 1873 | } |
| 1874 | } |
| 1875 | } |
| 1876 | |
| 1877 | sub cmd_M { |
| 1878 | &list_modules(); |
| 1879 | } |
| 1880 | |
| 1881 | sub cmd_o { |
| 1882 | my $opt = shift || ''; # opt[=val] |
| 1883 | if ($opt =~ /^(\S.*)/) { |
| 1884 | &parse_options($1); |
| 1885 | } else { |
| 1886 | for (@options) { |
| 1887 | &dump_option($_); |
| 1888 | } |
| 1889 | } |
| 1890 | } |
| 1891 | |
| 1892 | sub cmd_O { |
| 1893 | print $OUT "The old O command is now the o command.\n"; # hint |
| 1894 | print $OUT "Use 'h' to get current command help synopsis or\n"; # |
| 1895 | print $OUT "use 'o CommandSet=pre580' to revert to old usage\n"; # |
| 1896 | } |
| 1897 | |
| 1898 | sub cmd_v { |
| 1899 | my $line = shift; |
| 1900 | |
| 1901 | if ($line =~ /^(\d*)$/) { |
| 1902 | $incr = $window - 1; |
| 1903 | $start = $1 if $1; |
| 1904 | $start -= $preview; |
| 1905 | $line = $start . '-' . ($start + $incr); |
| 1906 | &cmd_l($line); |
| 1907 | } |
| 1908 | } |
| 1909 | |
| 1910 | sub cmd_w { |
| 1911 | my $expr = shift || ''; |
| 1912 | if ($expr =~ /^(\S.*)/) { |
| 1913 | push @to_watch, $expr; |
| 1914 | $evalarg = $expr; |
| 1915 | my ($val) = &eval; |
| 1916 | $val = (defined $val) ? "'$val'" : 'undef' ; |
| 1917 | push @old_watch, $val; |
| 1918 | $trace |= 2; |
| 1919 | } else { |
| 1920 | print $OUT "Adding a watch-expression requires an expression\n"; # hint |
| 1921 | } |
| 1922 | } |
| 1923 | |
| 1924 | sub cmd_W { |
| 1925 | my $expr = shift || ''; |
| 1926 | if ($expr eq '*') { |
| 1927 | $trace &= ~2; |
| 1928 | print $OUT "Deleting all watch expressions ...\n"; |
| 1929 | @to_watch = @old_watch = (); |
| 1930 | } elsif ($expr =~ /^(\S.*)/) { |
| 1931 | my $i_cnt = 0; |
| 1932 | foreach (@to_watch) { |
| 1933 | my $val = $to_watch[$i_cnt]; |
| 1934 | if ($val eq $expr) { # =~ m/^\Q$i$/) { |
| 1935 | splice(@to_watch, $i_cnt, 1); |
| 1936 | } |
| 1937 | $i_cnt++; |
| 1938 | } |
| 1939 | } else { |
| 1940 | print $OUT "Deleting a watch-expression requires an expression, or '*' for all\n"; # hint |
| 1941 | } |
| 1942 | } |
| 1943 | |
| 1944 | ### END of the API section |
| 1945 | |
| 1946 | sub save { |
| 1947 | @saved = ($@, $!, $^E, $,, $/, $\, $^W); |
| 1948 | $, = ""; $/ = "\n"; $\ = ""; $^W = 0; |
| 1949 | } |
| 1950 | |
| 1951 | sub print_lineinfo { |
| 1952 | resetterm(1) if $LINEINFO eq $OUT and $term_pid != $$; |
| 1953 | local $\ = ''; |
| 1954 | local $, = ''; |
| 1955 | print $LINEINFO @_; |
| 1956 | } |
| 1957 | |
| 1958 | # The following takes its argument via $evalarg to preserve current @_ |
| 1959 | |
| 1960 | sub postponed_sub { |
| 1961 | my $subname = shift; |
| 1962 | if ($postponed{$subname} =~ s/^break\s([+-]?\d+)\s+if\s//) { |
| 1963 | my $offset = $1 || 0; |
| 1964 | # Filename below can contain ':' |
| 1965 | my ($file,$i) = (find_sub($subname) =~ /^(.*):(\d+)-.*$/); |
| 1966 | if ($i) { |
| 1967 | $i += $offset; |
| 1968 | local *dbline = $main::{'_<' . $file}; |
| 1969 | local $^W = 0; # != 0 is magical below |
| 1970 | $had_breakpoints{$file} |= 1; |
| 1971 | my $max = $#dbline; |
| 1972 | ++$i until $dbline[$i] != 0 or $i >= $max; |
| 1973 | $dbline{$i} = delete $postponed{$subname}; |
| 1974 | } else { |
| 1975 | local $\ = ''; |
| 1976 | print $OUT "Subroutine $subname not found.\n"; |
| 1977 | } |
| 1978 | return; |
| 1979 | } |
| 1980 | elsif ($postponed{$subname} eq 'compile') { $signal = 1 } |
| 1981 | #print $OUT "In postponed_sub for `$subname'.\n"; |
| 1982 | } |
| 1983 | |
| 1984 | sub postponed { |
| 1985 | if ($ImmediateStop) { |
| 1986 | $ImmediateStop = 0; |
| 1987 | $signal = 1; |
| 1988 | } |
| 1989 | return &postponed_sub |
| 1990 | unless ref \$_[0] eq 'GLOB'; # A subroutine is compiled. |
| 1991 | # Cannot be done before the file is compiled |
| 1992 | local *dbline = shift; |
| 1993 | my $filename = $dbline; |
| 1994 | $filename =~ s/^_<//; |
| 1995 | local $\ = ''; |
| 1996 | $signal = 1, print $OUT "'$filename' loaded...\n" |
| 1997 | if $break_on_load{$filename}; |
| 1998 | print_lineinfo(' ' x $stack_depth, "Package $filename.\n") if $frame; |
| 1999 | return unless $postponed_file{$filename}; |
| 2000 | $had_breakpoints{$filename} |= 1; |
| 2001 | #%dbline = %{$postponed_file{$filename}}; # Cannot be done: unsufficient magic |
| 2002 | my $key; |
| 2003 | for $key (keys %{$postponed_file{$filename}}) { |
| 2004 | $dbline{$key} = ${$postponed_file{$filename}}{$key}; |
| 2005 | } |
| 2006 | delete $postponed_file{$filename}; |
| 2007 | } |
| 2008 | |
| 2009 | sub dumpit { |
| 2010 | local ($savout) = select(shift); |
| 2011 | my $osingle = $single; |
| 2012 | my $otrace = $trace; |
| 2013 | $single = $trace = 0; |
| 2014 | local $frame = 0; |
| 2015 | local $doret = -2; |
| 2016 | unless (defined &main::dumpValue) { |
| 2017 | do 'dumpvar.pl'; |
| 2018 | } |
| 2019 | if (defined &main::dumpValue) { |
| 2020 | local $\ = ''; |
| 2021 | local $, = ''; |
| 2022 | local $" = ' '; |
| 2023 | my $v = shift; |
| 2024 | my $maxdepth = shift || $option{dumpDepth}; |
| 2025 | $maxdepth = -1 unless defined $maxdepth; # -1 means infinite depth |
| 2026 | &main::dumpValue($v, $maxdepth); |
| 2027 | } else { |
| 2028 | local $\ = ''; |
| 2029 | print $OUT "dumpvar.pl not available.\n"; |
| 2030 | } |
| 2031 | $single = $osingle; |
| 2032 | $trace = $otrace; |
| 2033 | select ($savout); |
| 2034 | } |
| 2035 | |
| 2036 | # Tied method do not create a context, so may get wrong message: |
| 2037 | |
| 2038 | sub print_trace { |
| 2039 | local $\ = ''; |
| 2040 | my $fh = shift; |
| 2041 | resetterm(1) if $fh eq $LINEINFO and $LINEINFO eq $OUT and $term_pid != $$; |
| 2042 | my @sub = dump_trace($_[0] + 1, $_[1]); |
| 2043 | my $short = $_[2]; # Print short report, next one for sub name |
| 2044 | my $s; |
| 2045 | for ($i=0; $i <= $#sub; $i++) { |
| 2046 | last if $signal; |
| 2047 | local $" = ', '; |
| 2048 | my $args = defined $sub[$i]{args} |
| 2049 | ? "(@{ $sub[$i]{args} })" |
| 2050 | : '' ; |
| 2051 | $args = (substr $args, 0, $maxtrace - 3) . '...' |
| 2052 | if length $args > $maxtrace; |
| 2053 | my $file = $sub[$i]{file}; |
| 2054 | $file = $file eq '-e' ? $file : "file `$file'" unless $short; |
| 2055 | $s = $sub[$i]{sub}; |
| 2056 | $s = (substr $s, 0, $maxtrace - 3) . '...' if length $s > $maxtrace; |
| 2057 | if ($short) { |
| 2058 | my $sub = @_ >= 4 ? $_[3] : $s; |
| 2059 | print $fh "$sub[$i]{context}=$sub$args from $file:$sub[$i]{line}\n"; |
| 2060 | } else { |
| 2061 | print $fh "$sub[$i]{context} = $s$args" . |
| 2062 | " called from $file" . |
| 2063 | " line $sub[$i]{line}\n"; |
| 2064 | } |
| 2065 | } |
| 2066 | } |
| 2067 | |
| 2068 | sub dump_trace { |
| 2069 | my $skip = shift; |
| 2070 | my $count = shift || 1e9; |
| 2071 | $skip++; |
| 2072 | $count += $skip; |
| 2073 | my ($p,$file,$line,$sub,$h,$args,$e,$r,@a,@sub,$context); |
| 2074 | my $nothard = not $frame & 8; |
| 2075 | local $frame = 0; # Do not want to trace this. |
| 2076 | my $otrace = $trace; |
| 2077 | $trace = 0; |
| 2078 | for ($i = $skip; |
| 2079 | $i < $count and ($p,$file,$line,$sub,$h,$context,$e,$r) = caller($i); |
| 2080 | $i++) { |
| 2081 | @a = (); |
| 2082 | for $arg (@args) { |
| 2083 | my $type; |
| 2084 | if (not defined $arg) { |
| 2085 | push @a, "undef"; |
| 2086 | } elsif ($nothard and tied $arg) { |
| 2087 | push @a, "tied"; |
| 2088 | } elsif ($nothard and $type = ref $arg) { |
| 2089 | push @a, "ref($type)"; |
| 2090 | } else { |
| 2091 | local $_ = "$arg"; # Safe to stringify now - should not call f(). |
| 2092 | s/([\'\\])/\\$1/g; |
| 2093 | s/(.*)/'$1'/s |
| 2094 | unless /^(?: -?[\d.]+ | \*[\w:]* )$/x; |
| 2095 | s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg; |
| 2096 | s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg; |
| 2097 | push(@a, $_); |
| 2098 | } |
| 2099 | } |
| 2100 | $context = $context ? '@' : (defined $context ? "\$" : '.'); |
| 2101 | $args = $h ? [@a] : undef; |
| 2102 | $e =~ s/\n\s*\;\s*\Z// if $e; |
| 2103 | $e =~ s/([\\\'])/\\$1/g if $e; |
| 2104 | if ($r) { |
| 2105 | $sub = "require '$e'"; |
| 2106 | } elsif (defined $r) { |
| 2107 | $sub = "eval '$e'"; |
| 2108 | } elsif ($sub eq '(eval)') { |
| 2109 | $sub = "eval {...}"; |
| 2110 | } |
| 2111 | push(@sub, {context => $context, sub => $sub, args => $args, |
| 2112 | file => $file, line => $line}); |
| 2113 | last if $signal; |
| 2114 | } |
| 2115 | $trace = $otrace; |
| 2116 | @sub; |
| 2117 | } |
| 2118 | |
| 2119 | sub action { |
| 2120 | my $action = shift; |
| 2121 | while ($action =~ s/\\$//) { |
| 2122 | #print $OUT "+ "; |
| 2123 | #$action .= "\n"; |
| 2124 | $action .= &gets; |
| 2125 | } |
| 2126 | $action; |
| 2127 | } |
| 2128 | |
| 2129 | sub unbalanced { |
| 2130 | # i hate using globals! |
| 2131 | $balanced_brace_re ||= qr{ |
| 2132 | ^ \{ |
| 2133 | (?: |
| 2134 | (?> [^{}] + ) # Non-parens without backtracking |
| 2135 | | |
| 2136 | (??{ $balanced_brace_re }) # Group with matching parens |
| 2137 | ) * |
| 2138 | \} $ |
| 2139 | }x; |
| 2140 | return $_[0] !~ m/$balanced_brace_re/; |
| 2141 | } |
| 2142 | |
| 2143 | sub gets { |
| 2144 | &readline("cont: "); |
| 2145 | } |
| 2146 | |
| 2147 | sub system { |
| 2148 | # We save, change, then restore STDIN and STDOUT to avoid fork() since |
| 2149 | # some non-Unix systems can do system() but have problems with fork(). |
| 2150 | open(SAVEIN,"<&STDIN") || &warn("Can't save STDIN"); |
| 2151 | open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT"); |
| 2152 | open(STDIN,"<&IN") || &warn("Can't redirect STDIN"); |
| 2153 | open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); |
| 2154 | |
| 2155 | # XXX: using csh or tcsh destroys sigint retvals! |
| 2156 | system(@_); |
| 2157 | open(STDIN,"<&SAVEIN") || &warn("Can't restore STDIN"); |
| 2158 | open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); |
| 2159 | close(SAVEIN); |
| 2160 | close(SAVEOUT); |
| 2161 | |
| 2162 | |
| 2163 | # most of the $? crud was coping with broken cshisms |
| 2164 | if ($? >> 8) { |
| 2165 | &warn("(Command exited ", ($? >> 8), ")\n"); |
| 2166 | } elsif ($?) { |
| 2167 | &warn( "(Command died of SIG#", ($? & 127), |
| 2168 | (($? & 128) ? " -- core dumped" : "") , ")", "\n"); |
| 2169 | } |
| 2170 | |
| 2171 | return $?; |
| 2172 | |
| 2173 | } |
| 2174 | |
| 2175 | sub setterm { |
| 2176 | local $frame = 0; |
| 2177 | local $doret = -2; |
| 2178 | eval { require Term::ReadLine } or die $@; |
| 2179 | if ($notty) { |
| 2180 | if ($tty) { |
| 2181 | my ($i, $o) = split $tty, /,/; |
| 2182 | $o = $i unless defined $o; |
| 2183 | open(IN,"<$i") or die "Cannot open TTY `$i' for read: $!"; |
| 2184 | open(OUT,">$o") or die "Cannot open TTY `$o' for write: $!"; |
| 2185 | $IN = \*IN; |
| 2186 | $OUT = \*OUT; |
| 2187 | my $sel = select($OUT); |
| 2188 | $| = 1; |
| 2189 | select($sel); |
| 2190 | } else { |
| 2191 | eval "require Term::Rendezvous;" or die; |
| 2192 | my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$"; |
| 2193 | my $term_rv = new Term::Rendezvous $rv; |
| 2194 | $IN = $term_rv->IN; |
| 2195 | $OUT = $term_rv->OUT; |
| 2196 | } |
| 2197 | } |
| 2198 | if ($term_pid eq '-1') { # In a TTY with another debugger |
| 2199 | resetterm(2); |
| 2200 | } |
| 2201 | if (!$rl) { |
| 2202 | $term = new Term::ReadLine::Stub 'perldb', $IN, $OUT; |
| 2203 | } else { |
| 2204 | $term = new Term::ReadLine 'perldb', $IN, $OUT; |
| 2205 | |
| 2206 | $rl_attribs = $term->Attribs; |
| 2207 | $rl_attribs->{basic_word_break_characters} .= '-:+/*,[])}' |
| 2208 | if defined $rl_attribs->{basic_word_break_characters} |
| 2209 | and index($rl_attribs->{basic_word_break_characters}, ":") == -1; |
| 2210 | $rl_attribs->{special_prefixes} = '$@&%'; |
| 2211 | $rl_attribs->{completer_word_break_characters} .= '$@&%'; |
| 2212 | $rl_attribs->{completion_function} = \&db_complete; |
| 2213 | } |
| 2214 | $LINEINFO = $OUT unless defined $LINEINFO; |
| 2215 | $lineinfo = $console unless defined $lineinfo; |
| 2216 | $term->MinLine(2); |
| 2217 | if ($term->Features->{setHistory} and "@hist" ne "?") { |
| 2218 | $term->SetHistory(@hist); |
| 2219 | } |
| 2220 | ornaments($ornaments) if defined $ornaments; |
| 2221 | $term_pid = $$; |
| 2222 | } |
| 2223 | |
| 2224 | # Example get_fork_TTY functions |
| 2225 | sub xterm_get_fork_TTY { |
| 2226 | (my $name = $0) =~ s,^.*[/\\],,s; |
| 2227 | open XT, qq[3>&1 xterm -title "Daughter Perl debugger $pids $name" -e sh -c 'tty 1>&3;\ |
| 2228 | sleep 10000000' |]; |
| 2229 | my $tty = <XT>; |
| 2230 | chomp $tty; |
| 2231 | $pidprompt = ''; # Shown anyway in titlebar |
| 2232 | return $tty; |
| 2233 | } |
| 2234 | |
| 2235 | # This example function resets $IN, $OUT itself |
| 2236 | sub os2_get_fork_TTY { |
| 2237 | local $^F = 40; # XXXX Fixme! |
| 2238 | local $\ = ''; |
| 2239 | my ($in1, $out1, $in2, $out2); |
| 2240 | # Having -d in PERL5OPT would lead to a disaster... |
| 2241 | local $ENV{PERL5OPT} = $ENV{PERL5OPT} if $ENV{PERL5OPT}; |
| 2242 | $ENV{PERL5OPT} =~ s/(?:^|(?<=\s))-d\b// if $ENV{PERL5OPT}; |
| 2243 | $ENV{PERL5OPT} =~ s/(?:^|(?<=\s))-d\B/-/ if $ENV{PERL5OPT}; |
| 2244 | print $OUT "Making kid PERL5OPT->`$ENV{PERL5OPT}'.\n" if $ENV{PERL5OPT}; |
| 2245 | local $ENV{PERL5LIB} = $ENV{PERL5LIB} ? $ENV{PERL5LIB} : $ENV{PERLLIB}; |
| 2246 | $ENV{PERL5LIB} = '' unless defined $ENV{PERL5LIB}; |
| 2247 | $ENV{PERL5LIB} = join ';', @ini_INC, split /;/, $ENV{PERL5LIB}; |
| 2248 | (my $name = $0) =~ s,^.*[/\\],,s; |
| 2249 | my @args; |
| 2250 | if ( pipe $in1, $out1 and pipe $in2, $out2 |
| 2251 | # system P_SESSION will fail if there is another process |
| 2252 | # in the same session with a "dependent" asynchronous child session. |
| 2253 | and @args = ($rl, fileno $in1, fileno $out2, |
| 2254 | "Daughter Perl debugger $pids $name") and |
| 2255 | (($kpid = CORE::system 4, $^X, '-we', <<'ES', @args) >= 0 # P_SESSION |
| 2256 | END {sleep 5 unless $loaded} |
| 2257 | BEGIN {open STDIN, '</dev/con' or warn "reopen stdin: $!"} |
| 2258 | use OS2::Process; |
| 2259 | |
| 2260 | my ($rl, $in) = (shift, shift); # Read from $in and pass through |
| 2261 | set_title pop; |
| 2262 | system P_NOWAIT, $^X, '-we', <<EOS or die "Cannot start a grandkid"; |
| 2263 | open IN, '<&=$in' or die "open <&=$in: \$!"; |
| 2264 | \$| = 1; print while sysread IN, \$_, 1<<16; |
| 2265 | EOS |
| 2266 | |
| 2267 | my $out = shift; |
| 2268 | open OUT, ">&=$out" or die "Cannot open &=$out for writing: $!"; |
| 2269 | select OUT; $| = 1; |
| 2270 | require Term::ReadKey if $rl; |
| 2271 | Term::ReadKey::ReadMode(4) if $rl; # Nodelay on kbd. Pipe is automatically nodelay... |
| 2272 | print while sysread STDIN, $_, 1<<($rl ? 16 : 0); |
| 2273 | ES |
| 2274 | or warn "system P_SESSION: $!, $^E" and 0) |
| 2275 | and close $in1 and close $out2 ) { |
| 2276 | $pidprompt = ''; # Shown anyway in titlebar |
| 2277 | reset_IN_OUT($in2, $out1); |
| 2278 | $tty = '*reset*'; |
| 2279 | return ''; # Indicate that reset_IN_OUT is called |
| 2280 | } |
| 2281 | return; |
| 2282 | } |
| 2283 | |
| 2284 | sub create_IN_OUT { # Create a window with IN/OUT handles redirected there |
| 2285 | my $in = &get_fork_TTY if defined &get_fork_TTY; |
| 2286 | $in = $fork_TTY if defined $fork_TTY; # Backward compatibility |
| 2287 | if (not defined $in) { |
| 2288 | my $why = shift; |
| 2289 | print_help(<<EOP) if $why == 1; |
| 2290 | I<#########> Forked, but do not know how to create a new B<TTY>. I<#########> |
| 2291 | EOP |
| 2292 | print_help(<<EOP) if $why == 2; |
| 2293 | I<#########> Daughter session, do not know how to change a B<TTY>. I<#########> |
| 2294 | This may be an asynchronous session, so the parent debugger may be active. |
| 2295 | EOP |
| 2296 | print_help(<<EOP) if $why != 4; |
| 2297 | Since two debuggers fight for the same TTY, input is severely entangled. |
| 2298 | |
| 2299 | EOP |
| 2300 | print_help(<<EOP); |
| 2301 | I know how to switch the output to a different window in xterms |
| 2302 | and OS/2 consoles only. For a manual switch, put the name of the created I<TTY> |
| 2303 | in B<\$DB::fork_TTY>, or define a function B<DB::get_fork_TTY()> returning this. |
| 2304 | |
| 2305 | On I<UNIX>-like systems one can get the name of a I<TTY> for the given window |
| 2306 | by typing B<tty>, and disconnect the I<shell> from I<TTY> by B<sleep 1000000>. |
| 2307 | |
| 2308 | EOP |
| 2309 | } elsif ($in ne '') { |
| 2310 | TTY($in); |
| 2311 | } else { |
| 2312 | $console = ''; # Indicate no need to open-from-the-console |
| 2313 | } |
| 2314 | undef $fork_TTY; |
| 2315 | } |
| 2316 | |
| 2317 | sub resetterm { # We forked, so we need a different TTY |
| 2318 | my $in = shift; |
| 2319 | my $systemed = $in > 1 ? '-' : ''; |
| 2320 | if ($pids) { |
| 2321 | $pids =~ s/\]/$systemed->$$]/; |
| 2322 | } else { |
| 2323 | $pids = "[$term_pid->$$]"; |
| 2324 | } |
| 2325 | $pidprompt = $pids; |
| 2326 | $term_pid = $$; |
| 2327 | return unless $CreateTTY & $in; |
| 2328 | create_IN_OUT($in); |
| 2329 | } |
| 2330 | |
| 2331 | sub readline { |
| 2332 | local $.; |
| 2333 | if (@typeahead) { |
| 2334 | my $left = @typeahead; |
| 2335 | my $got = shift @typeahead; |
| 2336 | local $\ = ''; |
| 2337 | print $OUT "auto(-$left)", shift, $got, "\n"; |
| 2338 | $term->AddHistory($got) |
| 2339 | if length($got) > 1 and defined $term->Features->{addHistory}; |
| 2340 | return $got; |
| 2341 | } |
| 2342 | local $frame = 0; |
| 2343 | local $doret = -2; |
| 2344 | while (@cmdfhs) { |
| 2345 | my $line = CORE::readline($cmdfhs[-1]); |
| 2346 | defined $line ? (print $OUT ">> $line" and return $line) |
| 2347 | : close pop @cmdfhs; |
| 2348 | } |
| 2349 | if (ref $OUT and UNIVERSAL::isa($OUT, 'IO::Socket::INET')) { |
| 2350 | $OUT->write(join('', @_)); |
| 2351 | my $stuff; |
| 2352 | $IN->recv( $stuff, 2048 ); # XXX: what's wrong with sysread? |
| 2353 | $stuff; |
| 2354 | } |
| 2355 | else { |
| 2356 | $term->readline(@_); |
| 2357 | } |
| 2358 | } |
| 2359 | |
| 2360 | sub dump_option { |
| 2361 | my ($opt, $val)= @_; |
| 2362 | $val = option_val($opt,'N/A'); |
| 2363 | $val =~ s/([\\\'])/\\$1/g; |
| 2364 | printf $OUT "%20s = '%s'\n", $opt, $val; |
| 2365 | } |
| 2366 | |
| 2367 | sub option_val { |
| 2368 | my ($opt, $default)= @_; |
| 2369 | my $val; |
| 2370 | if (defined $optionVars{$opt} |
| 2371 | and defined ${$optionVars{$opt}}) { |
| 2372 | $val = ${$optionVars{$opt}}; |
| 2373 | } elsif (defined $optionAction{$opt} |
| 2374 | and defined &{$optionAction{$opt}}) { |
| 2375 | $val = &{$optionAction{$opt}}(); |
| 2376 | } elsif (defined $optionAction{$opt} |
| 2377 | and not defined $option{$opt} |
| 2378 | or defined $optionVars{$opt} |
| 2379 | and not defined ${$optionVars{$opt}}) { |
| 2380 | $val = $default; |
| 2381 | } else { |
| 2382 | $val = $option{$opt}; |
| 2383 | } |
| 2384 | $val = $default unless defined $val; |
| 2385 | $val |
| 2386 | } |
| 2387 | |
| 2388 | sub parse_options { |
| 2389 | local($_)= @_; |
| 2390 | local $\ = ''; |
| 2391 | # too dangerous to let intuitive usage overwrite important things |
| 2392 | # defaultion should never be the default |
| 2393 | my %opt_needs_val = map { ( $_ => 1 ) } qw{ |
| 2394 | dumpDepth arrayDepth hashDepth LineInfo maxTraceLen ornaments windowSize |
| 2395 | pager quote ReadLine recallCommand RemotePort ShellBang TTY |
| 2396 | }; |
| 2397 | while (length) { |
| 2398 | my $val_defaulted; |
| 2399 | s/^\s+// && next; |
| 2400 | s/^(\w+)(\W?)// or print($OUT "Invalid option `$_'\n"), last; |
| 2401 | my ($opt,$sep) = ($1,$2); |
| 2402 | my $val; |
| 2403 | if ("?" eq $sep) { |
| 2404 | print($OUT "Option query `$opt?' followed by non-space `$_'\n"), last |
| 2405 | if /^\S/; |
| 2406 | #&dump_option($opt); |
| 2407 | } elsif ($sep !~ /\S/) { |
| 2408 | $val_defaulted = 1; |
| 2409 | $val = "1"; # this is an evil default; make 'em set it! |
| 2410 | } elsif ($sep eq "=") { |
| 2411 | if (s/ (["']) ( (?: \\. | (?! \1 ) [^\\] )* ) \1 //x) { |
| 2412 | my $quote = $1; |
| 2413 | ($val = $2) =~ s/\\([$quote\\])/$1/g; |
| 2414 | } else { |
| 2415 | s/^(\S*)//; |
| 2416 | $val = $1; |
| 2417 | print OUT qq(Option better cleared using $opt=""\n) |
| 2418 | unless length $val; |
| 2419 | } |
| 2420 | |
| 2421 | } else { #{ to "let some poor schmuck bounce on the % key in B<vi>." |
| 2422 | my ($end) = "\\" . substr( ")]>}$sep", index("([<{",$sep), 1 ); #} |
| 2423 | s/^(([^\\$end]|\\[\\$end])*)$end($|\s+)// or |
| 2424 | print($OUT "Unclosed option value `$opt$sep$_'\n"), last; |
| 2425 | ($val = $1) =~ s/\\([\\$end])/$1/g; |
| 2426 | } |
| 2427 | |
| 2428 | my $option; |
| 2429 | my $matches = grep( /^\Q$opt/ && ($option = $_), @options ) |
| 2430 | || grep( /^\Q$opt/i && ($option = $_), @options ); |
| 2431 | |
| 2432 | print($OUT "Unknown option `$opt'\n"), next unless $matches; |
| 2433 | print($OUT "Ambiguous option `$opt'\n"), next if $matches > 1; |
| 2434 | |
| 2435 | if ($opt_needs_val{$option} && $val_defaulted) { |
| 2436 | my $cmd = ($CommandSet eq '580') ? 'o' : 'O'; |
| 2437 | print $OUT "Option `$opt' is non-boolean. Use `$cmd $option=VAL' to set, `$cmd $option?' to query\n"; |
| 2438 | next; |
| 2439 | } |
| 2440 | |
| 2441 | $option{$option} = $val if defined $val; |
| 2442 | |
| 2443 | eval qq{ |
| 2444 | local \$frame = 0; |
| 2445 | local \$doret = -2; |
| 2446 | require '$optionRequire{$option}'; |
| 2447 | 1; |
| 2448 | } || die # XXX: shouldn't happen |
| 2449 | if defined $optionRequire{$option} && |
| 2450 | defined $val; |
| 2451 | |
| 2452 | ${$optionVars{$option}} = $val |
| 2453 | if defined $optionVars{$option} && |
| 2454 | defined $val; |
| 2455 | |
| 2456 | &{$optionAction{$option}} ($val) |
| 2457 | if defined $optionAction{$option} && |
| 2458 | defined &{$optionAction{$option}} && |
| 2459 | defined $val; |
| 2460 | |
| 2461 | # Not $rcfile |
| 2462 | dump_option($option) unless $OUT eq \*STDERR; |
| 2463 | } |
| 2464 | } |
| 2465 | |
| 2466 | sub set_list { |
| 2467 | my ($stem,@list) = @_; |
| 2468 | my $val; |
| 2469 | $ENV{"${stem}_n"} = @list; |
| 2470 | for $i (0 .. $#list) { |
| 2471 | $val = $list[$i]; |
| 2472 | $val =~ s/\\/\\\\/g; |
| 2473 | $val =~ s/([\0-\37\177\200-\377])/"\\0x" . unpack('H2',$1)/eg; |
| 2474 | $ENV{"${stem}_$i"} = $val; |
| 2475 | } |
| 2476 | } |
| 2477 | |
| 2478 | sub get_list { |
| 2479 | my $stem = shift; |
| 2480 | my @list; |
| 2481 | my $n = delete $ENV{"${stem}_n"}; |
| 2482 | my $val; |
| 2483 | for $i (0 .. $n - 1) { |
| 2484 | $val = delete $ENV{"${stem}_$i"}; |
| 2485 | $val =~ s/\\((\\)|0x(..))/ $2 ? $2 : pack('H2', $3) /ge; |
| 2486 | push @list, $val; |
| 2487 | } |
| 2488 | @list; |
| 2489 | } |
| 2490 | |
| 2491 | sub catch { |
| 2492 | $signal = 1; |
| 2493 | return; # Put nothing on the stack - malloc/free land! |
| 2494 | } |
| 2495 | |
| 2496 | sub warn { |
| 2497 | my($msg)= join("",@_); |
| 2498 | $msg .= ": $!\n" unless $msg =~ /\n$/; |
| 2499 | local $\ = ''; |
| 2500 | print $OUT $msg; |
| 2501 | } |
| 2502 | |
| 2503 | sub reset_IN_OUT { |
| 2504 | my $switch_li = $LINEINFO eq $OUT; |
| 2505 | if ($term and $term->Features->{newTTY}) { |
| 2506 | ($IN, $OUT) = (shift, shift); |
| 2507 | $term->newTTY($IN, $OUT); |
| 2508 | } elsif ($term) { |
| 2509 | &warn("Too late to set IN/OUT filehandles, enabled on next `R'!\n"); |
| 2510 | } else { |
| 2511 | ($IN, $OUT) = (shift, shift); |
| 2512 | } |
| 2513 | my $o = select $OUT; |
| 2514 | $| = 1; |
| 2515 | select $o; |
| 2516 | $LINEINFO = $OUT if $switch_li; |
| 2517 | } |
| 2518 | |
| 2519 | sub TTY { |
| 2520 | if (@_ and $term and $term->Features->{newTTY}) { |
| 2521 | my ($in, $out) = shift; |
| 2522 | if ($in =~ /,/) { |
| 2523 | ($in, $out) = split /,/, $in, 2; |
| 2524 | } else { |
| 2525 | $out = $in; |
| 2526 | } |
| 2527 | open IN, $in or die "cannot open `$in' for read: $!"; |
| 2528 | open OUT, ">$out" or die "cannot open `$out' for write: $!"; |
| 2529 | reset_IN_OUT(\*IN,\*OUT); |
| 2530 | return $tty = $in; |
| 2531 | } |
| 2532 | &warn("Too late to set TTY, enabled on next `R'!\n") if $term and @_; |
| 2533 | # Useful if done through PERLDB_OPTS: |
| 2534 | $console = $tty = shift if @_; |
| 2535 | $tty or $console; |
| 2536 | } |
| 2537 | |
| 2538 | sub noTTY { |
| 2539 | if ($term) { |
| 2540 | &warn("Too late to set noTTY, enabled on next `R'!\n") if @_; |
| 2541 | } |
| 2542 | $notty = shift if @_; |
| 2543 | $notty; |
| 2544 | } |
| 2545 | |
| 2546 | sub ReadLine { |
| 2547 | if ($term) { |
| 2548 | &warn("Too late to set ReadLine, enabled on next `R'!\n") if @_; |
| 2549 | } |
| 2550 | $rl = shift if @_; |
| 2551 | $rl; |
| 2552 | } |
| 2553 | |
| 2554 | sub RemotePort { |
| 2555 | if ($term) { |
| 2556 | &warn("Too late to set RemotePort, enabled on next 'R'!\n") if @_; |
| 2557 | } |
| 2558 | $remoteport = shift if @_; |
| 2559 | $remoteport; |
| 2560 | } |
| 2561 | |
| 2562 | sub tkRunning { |
| 2563 | if (${$term->Features}{tkRunning}) { |
| 2564 | return $term->tkRunning(@_); |
| 2565 | } else { |
| 2566 | local $\ = ''; |
| 2567 | print $OUT "tkRunning not supported by current ReadLine package.\n"; |
| 2568 | 0; |
| 2569 | } |
| 2570 | } |
| 2571 | |
| 2572 | sub NonStop { |
| 2573 | if ($term) { |
| 2574 | &warn("Too late to set up NonStop mode, enabled on next `R'!\n") if @_; |
| 2575 | } |
| 2576 | $runnonstop = shift if @_; |
| 2577 | $runnonstop; |
| 2578 | } |
| 2579 | |
| 2580 | sub pager { |
| 2581 | if (@_) { |
| 2582 | $pager = shift; |
| 2583 | $pager="|".$pager unless $pager =~ /^(\+?\>|\|)/; |
| 2584 | } |
| 2585 | $pager; |
| 2586 | } |
| 2587 | |
| 2588 | sub shellBang { |
| 2589 | if (@_) { |
| 2590 | $sh = quotemeta shift; |
| 2591 | $sh .= "\\b" if $sh =~ /\w$/; |
| 2592 | } |
| 2593 | $psh = $sh; |
| 2594 | $psh =~ s/\\b$//; |
| 2595 | $psh =~ s/\\(.)/$1/g; |
| 2596 | $psh; |
| 2597 | } |
| 2598 | |
| 2599 | sub ornaments { |
| 2600 | if (defined $term) { |
| 2601 | local ($warnLevel,$dieLevel) = (0, 1); |
| 2602 | return '' unless $term->Features->{ornaments}; |
| 2603 | eval { $term->ornaments(@_) } || ''; |
| 2604 | } else { |
| 2605 | $ornaments = shift; |
| 2606 | } |
| 2607 | } |
| 2608 | |
| 2609 | sub recallCommand { |
| 2610 | if (@_) { |
| 2611 | $rc = quotemeta shift; |
| 2612 | $rc .= "\\b" if $rc =~ /\w$/; |
| 2613 | } |
| 2614 | $prc = $rc; |
| 2615 | $prc =~ s/\\b$//; |
| 2616 | $prc =~ s/\\(.)/$1/g; |
| 2617 | $prc; |
| 2618 | } |
| 2619 | |
| 2620 | sub LineInfo { |
| 2621 | return $lineinfo unless @_; |
| 2622 | $lineinfo = shift; |
| 2623 | my $stream = ($lineinfo =~ /^(\+?\>|\|)/) ? $lineinfo : ">$lineinfo"; |
| 2624 | $slave_editor = ($stream =~ /^\|/); |
| 2625 | open(LINEINFO, "$stream") || &warn("Cannot open `$stream' for write"); |
| 2626 | $LINEINFO = \*LINEINFO; |
| 2627 | my $save = select($LINEINFO); |
| 2628 | $| = 1; |
| 2629 | select($save); |
| 2630 | $lineinfo; |
| 2631 | } |
| 2632 | |
| 2633 | sub list_modules { # versions |
| 2634 | my %version; |
| 2635 | my $file; |
| 2636 | for (keys %INC) { |
| 2637 | $file = $_; |
| 2638 | s,\.p[lm]$,,i ; |
| 2639 | s,/,::,g ; |
| 2640 | s/^perl5db$/DB/; |
| 2641 | s/^Term::ReadLine::readline$/readline/; |
| 2642 | if (defined ${ $_ . '::VERSION' }) { |
| 2643 | $version{$file} = "${ $_ . '::VERSION' } from "; |
| 2644 | } |
| 2645 | $version{$file} .= $INC{$file}; |
| 2646 | } |
| 2647 | dumpit($OUT,\%version); |
| 2648 | } |
| 2649 | |
| 2650 | sub sethelp { |
| 2651 | # XXX: make sure there are tabs between the command and explanation, |
| 2652 | # or print_help will screw up your formatting if you have |
| 2653 | # eeevil ornaments enabled. This is an insane mess. |
| 2654 | |
| 2655 | $help = " |
| 2656 | Help is currently only available for the new 580 CommandSet, |
| 2657 | if you really want old behaviour, presumably you know what |
| 2658 | you're doing ?-) |
| 2659 | |
| 2660 | B<T> Stack trace. |
| 2661 | B<s> [I<expr>] Single step [in I<expr>]. |
| 2662 | B<n> [I<expr>] Next, steps over subroutine calls [in I<expr>]. |
| 2663 | <B<CR>> Repeat last B<n> or B<s> command. |
| 2664 | B<r> Return from current subroutine. |
| 2665 | B<c> [I<line>|I<sub>] Continue; optionally inserts a one-time-only breakpoint |
| 2666 | at the specified position. |
| 2667 | B<l> I<min>B<+>I<incr> List I<incr>+1 lines starting at I<min>. |
| 2668 | B<l> I<min>B<->I<max> List lines I<min> through I<max>. |
| 2669 | B<l> I<line> List single I<line>. |
| 2670 | B<l> I<subname> List first window of lines from subroutine. |
| 2671 | B<l> I<\$var> List first window of lines from subroutine referenced by I<\$var>. |
| 2672 | B<l> List next window of lines. |
| 2673 | B<-> List previous window of lines. |
| 2674 | B<v> [I<line>] View window around I<line>. |
| 2675 | B<.> Return to the executed line. |
| 2676 | B<f> I<filename> Switch to viewing I<filename>. File must be already loaded. |
| 2677 | I<filename> may be either the full name of the file, or a regular |
| 2678 | expression matching the full file name: |
| 2679 | B<f> I</home/me/foo.pl> and B<f> I<oo\\.> may access the same file. |
| 2680 | Evals (with saved bodies) are considered to be filenames: |
| 2681 | B<f> I<(eval 7)> and B<f> I<eval 7\\b> access the body of the 7th eval |
| 2682 | (in the order of execution). |
| 2683 | B</>I<pattern>B</> Search forwards for I<pattern>; final B</> is optional. |
| 2684 | B<?>I<pattern>B<?> Search backwards for I<pattern>; final B<?> is optional. |
| 2685 | B<L> [I<a|b|w>] List actions and or breakpoints and or watch-expressions. |
| 2686 | B<S> [[B<!>]I<pattern>] List subroutine names [not] matching I<pattern>. |
| 2687 | B<t> Toggle trace mode. |
| 2688 | B<t> I<expr> Trace through execution of I<expr>. |
| 2689 | B<b> Sets breakpoint on current line) |
| 2690 | B<b> [I<line>] [I<condition>] |
| 2691 | Set breakpoint; I<line> defaults to the current execution line; |
| 2692 | I<condition> breaks if it evaluates to true, defaults to '1'. |
| 2693 | B<b> I<subname> [I<condition>] |
| 2694 | Set breakpoint at first line of subroutine. |
| 2695 | B<b> I<\$var> Set breakpoint at first line of subroutine referenced by I<\$var>. |
| 2696 | B<b> B<load> I<filename> Set breakpoint on 'require'ing the given file. |
| 2697 | B<b> B<postpone> I<subname> [I<condition>] |
| 2698 | Set breakpoint at first line of subroutine after |
| 2699 | it is compiled. |
| 2700 | B<b> B<compile> I<subname> |
| 2701 | Stop after the subroutine is compiled. |
| 2702 | B<B> [I<line>] Delete the breakpoint for I<line>. |
| 2703 | B<B> I<*> Delete all breakpoints. |
| 2704 | B<a> [I<line>] I<command> |
| 2705 | Set an action to be done before the I<line> is executed; |
| 2706 | I<line> defaults to the current execution line. |
| 2707 | Sequence is: check for breakpoint/watchpoint, print line |
| 2708 | if necessary, do action, prompt user if necessary, |
| 2709 | execute line. |
| 2710 | B<a> Does nothing |
| 2711 | B<A> [I<line>] Delete the action for I<line>. |
| 2712 | B<A> I<*> Delete all actions. |
| 2713 | B<w> I<expr> Add a global watch-expression. |
| 2714 | B<w> Does nothing |
| 2715 | B<W> I<expr> Delete a global watch-expression. |
| 2716 | B<W> I<*> Delete all watch-expressions. |
| 2717 | B<V> [I<pkg> [I<vars>]] List some (default all) variables in package (default current). |
| 2718 | Use B<~>I<pattern> and B<!>I<pattern> for positive and negative regexps. |
| 2719 | B<X> [I<vars>] Same as \"B<V> I<currentpackage> [I<vars>]\". |
| 2720 | B<x> I<expr> Evals expression in list context, dumps the result. |
| 2721 | B<m> I<expr> Evals expression in list context, prints methods callable |
| 2722 | on the first element of the result. |
| 2723 | B<m> I<class> Prints methods callable via the given class. |
| 2724 | B<M> Show versions of loaded modules. |
| 2725 | |
| 2726 | B<<> ? List Perl commands to run before each prompt. |
| 2727 | B<<> I<expr> Define Perl command to run before each prompt. |
| 2728 | B<<<> I<expr> Add to the list of Perl commands to run before each prompt. |
| 2729 | B<>> ? List Perl commands to run after each prompt. |
| 2730 | B<>> I<expr> Define Perl command to run after each prompt. |
| 2731 | B<>>B<>> I<expr> Add to the list of Perl commands to run after each prompt. |
| 2732 | B<{> I<db_command> Define debugger command to run before each prompt. |
| 2733 | B<{> ? List debugger commands to run before each prompt. |
| 2734 | B<{{> I<db_command> Add to the list of debugger commands to run before each prompt. |
| 2735 | B<$prc> I<number> Redo a previous command (default previous command). |
| 2736 | B<$prc> I<-number> Redo number'th-to-last command. |
| 2737 | B<$prc> I<pattern> Redo last command that started with I<pattern>. |
| 2738 | See 'B<O> I<recallCommand>' too. |
| 2739 | B<$psh$psh> I<cmd> Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)" |
| 2740 | . ( $rc eq $sh ? "" : " |
| 2741 | B<$psh> [I<cmd>] Run I<cmd> in subshell (forces \"\$SHELL -c 'cmd'\")." ) . " |
| 2742 | See 'B<O> I<shellBang>' too. |
| 2743 | B<@>I<file> Execute I<file> containing debugger commands (may nest). |
| 2744 | B<H> I<-number> Display last number commands (default all). |
| 2745 | B<p> I<expr> Same as \"I<print {DB::OUT} expr>\" in current package. |
| 2746 | B<|>I<dbcmd> Run debugger command, piping DB::OUT to current pager. |
| 2747 | B<||>I<dbcmd> Same as B<|>I<dbcmd> but DB::OUT is temporarilly select()ed as well. |
| 2748 | B<\=> [I<alias> I<value>] Define a command alias, or list current aliases. |
| 2749 | I<command> Execute as a perl statement in current package. |
| 2750 | B<R> Pure-man-restart of debugger, some of debugger state |
| 2751 | and command-line options may be lost. |
| 2752 | Currently the following settings are preserved: |
| 2753 | history, breakpoints and actions, debugger B<O>ptions |
| 2754 | and the following command-line options: I<-w>, I<-I>, I<-e>. |
| 2755 | |
| 2756 | B<o> [I<opt>] ... Set boolean option to true |
| 2757 | B<o> [I<opt>B<?>] Query options |
| 2758 | B<o> [I<opt>B<=>I<val>] [I<opt>=B<\">I<val>B<\">] ... |
| 2759 | Set options. Use quotes in spaces in value. |
| 2760 | I<recallCommand>, I<ShellBang> chars used to recall command or spawn shell; |
| 2761 | I<pager> program for output of \"|cmd\"; |
| 2762 | I<tkRunning> run Tk while prompting (with ReadLine); |
| 2763 | I<signalLevel> I<warnLevel> I<dieLevel> level of verbosity; |
| 2764 | I<inhibit_exit> Allows stepping off the end of the script. |
| 2765 | I<ImmediateStop> Debugger should stop as early as possible. |
| 2766 | I<RemotePort> Remote hostname:port for remote debugging |
| 2767 | The following options affect what happens with B<V>, B<X>, and B<x> commands: |
| 2768 | I<arrayDepth>, I<hashDepth> print only first N elements ('' for all); |
| 2769 | I<compactDump>, I<veryCompact> change style of array and hash dump; |
| 2770 | I<globPrint> whether to print contents of globs; |
| 2771 | I<DumpDBFiles> dump arrays holding debugged files; |
| 2772 | I<DumpPackages> dump symbol tables of packages; |
| 2773 | I<DumpReused> dump contents of \"reused\" addresses; |
| 2774 | I<quote>, I<HighBit>, I<undefPrint> change style of string dump; |
| 2775 | I<bareStringify> Do not print the overload-stringified value; |
| 2776 | Other options include: |
| 2777 | I<PrintRet> affects printing of return value after B<r> command, |
| 2778 | I<frame> affects printing messages on subroutine entry/exit. |
| 2779 | I<AutoTrace> affects printing messages on possible breaking points. |
| 2780 | I<maxTraceLen> gives max length of evals/args listed in stack trace. |
| 2781 | I<ornaments> affects screen appearance of the command line. |
| 2782 | I<CreateTTY> bits control attempts to create a new TTY on events: |
| 2783 | 1: on fork() 2: debugger is started inside debugger |
| 2784 | 4: on startup |
| 2785 | During startup options are initialized from \$ENV{PERLDB_OPTS}. |
| 2786 | You can put additional initialization options I<TTY>, I<noTTY>, |
| 2787 | I<ReadLine>, I<NonStop>, and I<RemotePort> there (or use |
| 2788 | `B<R>' after you set them). |
| 2789 | |
| 2790 | B<q> or B<^D> Quit. Set B<\$DB::finished = 0> to debug global destruction. |
| 2791 | B<h> Summary of debugger commands. |
| 2792 | B<h> [I<db_command>] Get help [on a specific debugger command], enter B<|h> to page. |
| 2793 | B<h h> Long help for debugger commands |
| 2794 | B<$doccmd> I<manpage> Runs the external doc viewer B<$doccmd> command on the |
| 2795 | named Perl I<manpage>, or on B<$doccmd> itself if omitted. |
| 2796 | Set B<\$DB::doccmd> to change viewer. |
| 2797 | |
| 2798 | Type `|h h' for a paged display if this was too hard to read. |
| 2799 | |
| 2800 | "; # Fix balance of vi % matching: }}}} |
| 2801 | |
| 2802 | # note: tabs in the following section are not-so-helpful |
| 2803 | $summary = <<"END_SUM"; |
| 2804 | I<List/search source lines:> I<Control script execution:> |
| 2805 | B<l> [I<ln>|I<sub>] List source code B<T> Stack trace |
| 2806 | B<-> or B<.> List previous/current line B<s> [I<expr>] Single step [in expr] |
| 2807 | B<v> [I<line>] View around line B<n> [I<expr>] Next, steps over subs |
| 2808 | B<f> I<filename> View source in file <B<CR>/B<Enter>> Repeat last B<n> or B<s> |
| 2809 | B</>I<pattern>B</> B<?>I<patt>B<?> Search forw/backw B<r> Return from subroutine |
| 2810 | B<M> Show module versions B<c> [I<ln>|I<sub>] Continue until position |
| 2811 | I<Debugger controls:> B<L> List break/watch/actions |
| 2812 | B<o> [...] Set debugger options B<t> [I<expr>] Toggle trace [trace expr] |
| 2813 | B<<>[B<<>]|B<{>[B<{>]|B<>>[B<>>] [I<cmd>] Do pre/post-prompt B<b> [I<ln>|I<event>|I<sub>] [I<cnd>] Set breakpoint |
| 2814 | B<$prc> [I<N>|I<pat>] Redo a previous command B<B> I<ln|*> Delete a/all breakpoints |
| 2815 | B<H> [I<-num>] Display last num commands B<a> [I<ln>] I<cmd> Do cmd before line |
| 2816 | B<=> [I<a> I<val>] Define/list an alias B<A> I<ln|*> Delete a/all actions |
| 2817 | B<h> [I<db_cmd>] Get help on command B<w> I<expr> Add a watch expression |
| 2818 | B<h h> Complete help page B<W> I<expr|*> Delete a/all watch expressions |
| 2819 | B<|>[B<|>]I<db_cmd> Send output to pager B<$psh>\[B<$psh>\] I<syscmd> Run cmd in a subprocess |
| 2820 | B<q> or B<^D> Quit B<R> Attempt a restart |
| 2821 | I<Data Examination:> B<expr> Execute perl code, also see: B<s>,B<n>,B<t> I<expr> |
| 2822 | B<x>|B<m> I<expr> Evals expr in list context, dumps the result or lists methods. |
| 2823 | B<p> I<expr> Print expression (uses script's current package). |
| 2824 | B<S> [[B<!>]I<pat>] List subroutine names [not] matching pattern |
| 2825 | B<V> [I<Pk> [I<Vars>]] List Variables in Package. Vars can be ~pattern or !pattern. |
| 2826 | B<X> [I<Vars>] Same as \"B<V> I<current_package> [I<Vars>]\". |
| 2827 | B<y> [I<n> [I<Vars>]] List lexicals in higher scope <n>. Vars same as B<V>. |
| 2828 | For more help, type B<h> I<cmd_letter>, or run B<$doccmd perldebug> for all docs. |
| 2829 | END_SUM |
| 2830 | # ')}}; # Fix balance of vi % matching |
| 2831 | |
| 2832 | # and this is really numb... |
| 2833 | $pre580_help = " |
| 2834 | B<T> Stack trace. |
| 2835 | B<s> [I<expr>] Single step [in I<expr>]. |
| 2836 | B<n> [I<expr>] Next, steps over subroutine calls [in I<expr>]. |
| 2837 | <B<CR>> Repeat last B<n> or B<s> command. |
| 2838 | B<r> Return from current subroutine. |
| 2839 | B<c> [I<line>|I<sub>] Continue; optionally inserts a one-time-only breakpoint |
| 2840 | at the specified position. |
| 2841 | B<l> I<min>B<+>I<incr> List I<incr>+1 lines starting at I<min>. |
| 2842 | B<l> I<min>B<->I<max> List lines I<min> through I<max>. |
| 2843 | B<l> I<line> List single I<line>. |
| 2844 | B<l> I<subname> List first window of lines from subroutine. |
| 2845 | B<l> I<\$var> List first window of lines from subroutine referenced by I<\$var>. |
| 2846 | B<l> List next window of lines. |
| 2847 | B<-> List previous window of lines. |
| 2848 | B<w> [I<line>] List window around I<line>. |
| 2849 | B<.> Return to the executed line. |
| 2850 | B<f> I<filename> Switch to viewing I<filename>. File must be already loaded. |
| 2851 | I<filename> may be either the full name of the file, or a regular |
| 2852 | expression matching the full file name: |
| 2853 | B<f> I</home/me/foo.pl> and B<f> I<oo\\.> may access the same file. |
| 2854 | Evals (with saved bodies) are considered to be filenames: |
| 2855 | B<f> I<(eval 7)> and B<f> I<eval 7\\b> access the body of the 7th eval |
| 2856 | (in the order of execution). |
| 2857 | B</>I<pattern>B</> Search forwards for I<pattern>; final B</> is optional. |
| 2858 | B<?>I<pattern>B<?> Search backwards for I<pattern>; final B<?> is optional. |
| 2859 | B<L> List all breakpoints and actions. |
| 2860 | B<S> [[B<!>]I<pattern>] List subroutine names [not] matching I<pattern>. |
| 2861 | B<t> Toggle trace mode. |
| 2862 | B<t> I<expr> Trace through execution of I<expr>. |
| 2863 | B<b> [I<line>] [I<condition>] |
| 2864 | Set breakpoint; I<line> defaults to the current execution line; |
| 2865 | I<condition> breaks if it evaluates to true, defaults to '1'. |
| 2866 | B<b> I<subname> [I<condition>] |
| 2867 | Set breakpoint at first line of subroutine. |
| 2868 | B<b> I<\$var> Set breakpoint at first line of subroutine referenced by I<\$var>. |
| 2869 | B<b> B<load> I<filename> Set breakpoint on `require'ing the given file. |
| 2870 | B<b> B<postpone> I<subname> [I<condition>] |
| 2871 | Set breakpoint at first line of subroutine after |
| 2872 | it is compiled. |
| 2873 | B<b> B<compile> I<subname> |
| 2874 | Stop after the subroutine is compiled. |
| 2875 | B<d> [I<line>] Delete the breakpoint for I<line>. |
| 2876 | B<D> Delete all breakpoints. |
| 2877 | B<a> [I<line>] I<command> |
| 2878 | Set an action to be done before the I<line> is executed; |
| 2879 | I<line> defaults to the current execution line. |
| 2880 | Sequence is: check for breakpoint/watchpoint, print line |
| 2881 | if necessary, do action, prompt user if necessary, |
| 2882 | execute line. |
| 2883 | B<a> [I<line>] Delete the action for I<line>. |
| 2884 | B<A> Delete all actions. |
| 2885 | B<W> I<expr> Add a global watch-expression. |
| 2886 | B<W> Delete all watch-expressions. |
| 2887 | B<V> [I<pkg> [I<vars>]] List some (default all) variables in package (default current). |
| 2888 | Use B<~>I<pattern> and B<!>I<pattern> for positive and negative regexps. |
| 2889 | B<X> [I<vars>] Same as \"B<V> I<currentpackage> [I<vars>]\". |
| 2890 | B<x> I<expr> Evals expression in list context, dumps the result. |
| 2891 | B<m> I<expr> Evals expression in list context, prints methods callable |
| 2892 | on the first element of the result. |
| 2893 | B<m> I<class> Prints methods callable via the given class. |
| 2894 | |
| 2895 | B<<> ? List Perl commands to run before each prompt. |
| 2896 | B<<> I<expr> Define Perl command to run before each prompt. |
| 2897 | B<<<> I<expr> Add to the list of Perl commands to run before each prompt. |
| 2898 | B<>> ? List Perl commands to run after each prompt. |
| 2899 | B<>> I<expr> Define Perl command to run after each prompt. |
| 2900 | B<>>B<>> I<expr> Add to the list of Perl commands to run after each prompt. |
| 2901 | B<{> I<db_command> Define debugger command to run before each prompt. |
| 2902 | B<{> ? List debugger commands to run before each prompt. |
| 2903 | B<{{> I<db_command> Add to the list of debugger commands to run before each prompt. |
| 2904 | B<$prc> I<number> Redo a previous command (default previous command). |
| 2905 | B<$prc> I<-number> Redo number'th-to-last command. |
| 2906 | B<$prc> I<pattern> Redo last command that started with I<pattern>. |
| 2907 | See 'B<O> I<recallCommand>' too. |
| 2908 | B<$psh$psh> I<cmd> Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)" |
| 2909 | . ( $rc eq $sh ? "" : " |
| 2910 | B<$psh> [I<cmd>] Run I<cmd> in subshell (forces \"\$SHELL -c 'cmd'\")." ) . " |
| 2911 | See 'B<O> I<shellBang>' too. |
| 2912 | B<@>I<file> Execute I<file> containing debugger commands (may nest). |
| 2913 | B<H> I<-number> Display last number commands (default all). |
| 2914 | B<p> I<expr> Same as \"I<print {DB::OUT} expr>\" in current package. |
| 2915 | B<|>I<dbcmd> Run debugger command, piping DB::OUT to current pager. |
| 2916 | B<||>I<dbcmd> Same as B<|>I<dbcmd> but DB::OUT is temporarilly select()ed as well. |
| 2917 | B<\=> [I<alias> I<value>] Define a command alias, or list current aliases. |
| 2918 | I<command> Execute as a perl statement in current package. |
| 2919 | B<v> Show versions of loaded modules. |
| 2920 | B<R> Pure-man-restart of debugger, some of debugger state |
| 2921 | and command-line options may be lost. |
| 2922 | Currently the following settings are preserved: |
| 2923 | history, breakpoints and actions, debugger B<O>ptions |
| 2924 | and the following command-line options: I<-w>, I<-I>, I<-e>. |
| 2925 | |
| 2926 | B<O> [I<opt>] ... Set boolean option to true |
| 2927 | B<O> [I<opt>B<?>] Query options |
| 2928 | B<O> [I<opt>B<=>I<val>] [I<opt>=B<\">I<val>B<\">] ... |
| 2929 | Set options. Use quotes in spaces in value. |
| 2930 | I<recallCommand>, I<ShellBang> chars used to recall command or spawn shell; |
| 2931 | I<pager> program for output of \"|cmd\"; |
| 2932 | I<tkRunning> run Tk while prompting (with ReadLine); |
| 2933 | I<signalLevel> I<warnLevel> I<dieLevel> level of verbosity; |
| 2934 | I<inhibit_exit> Allows stepping off the end of the script. |
| 2935 | I<ImmediateStop> Debugger should stop as early as possible. |
| 2936 | I<RemotePort> Remote hostname:port for remote debugging |
| 2937 | The following options affect what happens with B<V>, B<X>, and B<x> commands: |
| 2938 | I<arrayDepth>, I<hashDepth> print only first N elements ('' for all); |
| 2939 | I<compactDump>, I<veryCompact> change style of array and hash dump; |
| 2940 | I<globPrint> whether to print contents of globs; |
| 2941 | I<DumpDBFiles> dump arrays holding debugged files; |
| 2942 | I<DumpPackages> dump symbol tables of packages; |
| 2943 | I<DumpReused> dump contents of \"reused\" addresses; |
| 2944 | I<quote>, I<HighBit>, I<undefPrint> change style of string dump; |
| 2945 | I<bareStringify> Do not print the overload-stringified value; |
| 2946 | Other options include: |
| 2947 | I<PrintRet> affects printing of return value after B<r> command, |
| 2948 | I<frame> affects printing messages on subroutine entry/exit. |
| 2949 | I<AutoTrace> affects printing messages on possible breaking points. |
| 2950 | I<maxTraceLen> gives max length of evals/args listed in stack trace. |
| 2951 | I<ornaments> affects screen appearance of the command line. |
| 2952 | I<CreateTTY> bits control attempts to create a new TTY on events: |
| 2953 | 1: on fork() 2: debugger is started inside debugger |
| 2954 | 4: on startup |
| 2955 | During startup options are initialized from \$ENV{PERLDB_OPTS}. |
| 2956 | You can put additional initialization options I<TTY>, I<noTTY>, |
| 2957 | I<ReadLine>, I<NonStop>, and I<RemotePort> there (or use |
| 2958 | `B<R>' after you set them). |
| 2959 | |
| 2960 | B<q> or B<^D> Quit. Set B<\$DB::finished = 0> to debug global destruction. |
| 2961 | B<h> [I<db_command>] Get help [on a specific debugger command], enter B<|h> to page. |
| 2962 | B<h h> Summary of debugger commands. |
| 2963 | B<$doccmd> I<manpage> Runs the external doc viewer B<$doccmd> command on the |
| 2964 | named Perl I<manpage>, or on B<$doccmd> itself if omitted. |
| 2965 | Set B<\$DB::doccmd> to change viewer. |
| 2966 | |
| 2967 | Type `|h' for a paged display if this was too hard to read. |
| 2968 | |
| 2969 | "; # Fix balance of vi % matching: }}}} |
| 2970 | |
| 2971 | # note: tabs in the following section are not-so-helpful |
| 2972 | $pre580_summary = <<"END_SUM"; |
| 2973 | I<List/search source lines:> I<Control script execution:> |
| 2974 | B<l> [I<ln>|I<sub>] List source code B<T> Stack trace |
| 2975 | B<-> or B<.> List previous/current line B<s> [I<expr>] Single step [in expr] |
| 2976 | B<w> [I<line>] List around line B<n> [I<expr>] Next, steps over subs |
| 2977 | B<f> I<filename> View source in file <B<CR>/B<Enter>> Repeat last B<n> or B<s> |
| 2978 | B</>I<pattern>B</> B<?>I<patt>B<?> Search forw/backw B<r> Return from subroutine |
| 2979 | B<v> Show versions of modules B<c> [I<ln>|I<sub>] Continue until position |
| 2980 | I<Debugger controls:> B<L> List break/watch/actions |
| 2981 | B<O> [...] Set debugger options B<t> [I<expr>] Toggle trace [trace expr] |
| 2982 | B<<>[B<<>]|B<{>[B<{>]|B<>>[B<>>] [I<cmd>] Do pre/post-prompt B<b> [I<ln>|I<event>|I<sub>] [I<cnd>] Set breakpoint |
| 2983 | B<$prc> [I<N>|I<pat>] Redo a previous command B<d> [I<ln>] or B<D> Delete a/all breakpoints |
| 2984 | B<H> [I<-num>] Display last num commands B<a> [I<ln>] I<cmd> Do cmd before line |
| 2985 | B<=> [I<a> I<val>] Define/list an alias B<W> I<expr> Add a watch expression |
| 2986 | B<h> [I<db_cmd>] Get help on command B<A> or B<W> Delete all actions/watch |
| 2987 | B<|>[B<|>]I<db_cmd> Send output to pager B<$psh>\[B<$psh>\] I<syscmd> Run cmd in a subprocess |
| 2988 | B<q> or B<^D> Quit B<R> Attempt a restart |
| 2989 | I<Data Examination:> B<expr> Execute perl code, also see: B<s>,B<n>,B<t> I<expr> |
| 2990 | B<x>|B<m> I<expr> Evals expr in list context, dumps the result or lists methods. |
| 2991 | B<p> I<expr> Print expression (uses script's current package). |
| 2992 | B<S> [[B<!>]I<pat>] List subroutine names [not] matching pattern |
| 2993 | B<V> [I<Pk> [I<Vars>]] List Variables in Package. Vars can be ~pattern or !pattern. |
| 2994 | B<X> [I<Vars>] Same as \"B<V> I<current_package> [I<Vars>]\". |
| 2995 | B<y> [I<n> [I<Vars>]] List lexicals in higher scope <n>. Vars same as B<V>. |
| 2996 | For more help, type B<h> I<cmd_letter>, or run B<$doccmd perldebug> for all docs. |
| 2997 | END_SUM |
| 2998 | # ')}}; # Fix balance of vi % matching |
| 2999 | |
| 3000 | } |
| 3001 | |
| 3002 | sub print_help { |
| 3003 | local $_ = shift; |
| 3004 | |
| 3005 | # Restore proper alignment destroyed by eeevil I<> and B<> |
| 3006 | # ornaments: A pox on both their houses! |
| 3007 | # |
| 3008 | # A help command will have everything up to and including |
| 3009 | # the first tab sequence padded into a field 16 (or if indented 20) |
| 3010 | # wide. If it's wider than that, an extra space will be added. |
| 3011 | s{ |
| 3012 | ^ # only matters at start of line |
| 3013 | ( \040{4} | \t )* # some subcommands are indented |
| 3014 | ( < ? # so <CR> works |
| 3015 | [BI] < [^\t\n] + ) # find an eeevil ornament |
| 3016 | ( \t+ ) # original separation, discarded |
| 3017 | ( .* ) # this will now start (no earlier) than |
| 3018 | # column 16 |
| 3019 | } { |
| 3020 | my($leadwhite, $command, $midwhite, $text) = ($1, $2, $3, $4); |
| 3021 | my $clean = $command; |
| 3022 | $clean =~ s/[BI]<([^>]*)>/$1/g; |
| 3023 | # replace with this whole string: |
| 3024 | ($leadwhite ? " " x 4 : "") |
| 3025 | . $command |
| 3026 | . ((" " x (16 + ($leadwhite ? 4 : 0) - length($clean))) || " ") |
| 3027 | . $text; |
| 3028 | |
| 3029 | }mgex; |
| 3030 | |
| 3031 | s{ # handle bold ornaments |
| 3032 | B < ( [^>] + | > ) > |
| 3033 | } { |
| 3034 | $Term::ReadLine::TermCap::rl_term_set[2] |
| 3035 | . $1 |
| 3036 | . $Term::ReadLine::TermCap::rl_term_set[3] |
| 3037 | }gex; |
| 3038 | |
| 3039 | s{ # handle italic ornaments |
| 3040 | I < ( [^>] + | > ) > |
| 3041 | } { |
| 3042 | $Term::ReadLine::TermCap::rl_term_set[0] |
| 3043 | . $1 |
| 3044 | . $Term::ReadLine::TermCap::rl_term_set[1] |
| 3045 | }gex; |
| 3046 | |
| 3047 | local $\ = ''; |
| 3048 | print $OUT $_; |
| 3049 | } |
| 3050 | |
| 3051 | sub fix_less { |
| 3052 | return if defined $ENV{LESS} && $ENV{LESS} =~ /r/; |
| 3053 | my $is_less = $pager =~ /\bless\b/; |
| 3054 | if ($pager =~ /\bmore\b/) { |
| 3055 | my @st_more = stat('/usr/bin/more'); |
| 3056 | my @st_less = stat('/usr/bin/less'); |
| 3057 | $is_less = @st_more && @st_less |
| 3058 | && $st_more[0] == $st_less[0] |
| 3059 | && $st_more[1] == $st_less[1]; |
| 3060 | } |
| 3061 | # changes environment! |
| 3062 | $ENV{LESS} .= 'r' if $is_less; |
| 3063 | } |
| 3064 | |
| 3065 | sub diesignal { |
| 3066 | local $frame = 0; |
| 3067 | local $doret = -2; |
| 3068 | $SIG{'ABRT'} = 'DEFAULT'; |
| 3069 | kill 'ABRT', $$ if $panic++; |
| 3070 | if (defined &Carp::longmess) { |
| 3071 | local $SIG{__WARN__} = ''; |
| 3072 | local $Carp::CarpLevel = 2; # mydie + confess |
| 3073 | &warn(Carp::longmess("Signal @_")); |
| 3074 | } |
| 3075 | else { |
| 3076 | local $\ = ''; |
| 3077 | print $DB::OUT "Got signal @_\n"; |
| 3078 | } |
| 3079 | kill 'ABRT', $$; |
| 3080 | } |
| 3081 | |
| 3082 | sub dbwarn { |
| 3083 | local $frame = 0; |
| 3084 | local $doret = -2; |
| 3085 | local $SIG{__WARN__} = ''; |
| 3086 | local $SIG{__DIE__} = ''; |
| 3087 | eval { require Carp } if defined $^S; # If error/warning during compilation, |
| 3088 | # require may be broken. |
| 3089 | CORE::warn(@_, "\nCannot print stack trace, load with -MCarp option to see stack"), |
| 3090 | return unless defined &Carp::longmess; |
| 3091 | my ($mysingle,$mytrace) = ($single,$trace); |
| 3092 | $single = 0; $trace = 0; |
| 3093 | my $mess = Carp::longmess(@_); |
| 3094 | ($single,$trace) = ($mysingle,$mytrace); |
| 3095 | &warn($mess); |
| 3096 | } |
| 3097 | |
| 3098 | sub dbdie { |
| 3099 | local $frame = 0; |
| 3100 | local $doret = -2; |
| 3101 | local $SIG{__DIE__} = ''; |
| 3102 | local $SIG{__WARN__} = ''; |
| 3103 | my $i = 0; my $ineval = 0; my $sub; |
| 3104 | if ($dieLevel > 2) { |
| 3105 | local $SIG{__WARN__} = \&dbwarn; |
| 3106 | &warn(@_); # Yell no matter what |
| 3107 | return; |
| 3108 | } |
| 3109 | if ($dieLevel < 2) { |
| 3110 | die @_ if $^S; # in eval propagate |
| 3111 | } |
| 3112 | # No need to check $^S, eval is much more robust nowadays |
| 3113 | eval { require Carp }; #if defined $^S;# If error/warning during compilation, |
| 3114 | # require may be broken. |
| 3115 | |
| 3116 | die(@_, "\nCannot print stack trace, load with -MCarp option to see stack") |
| 3117 | unless defined &Carp::longmess; |
| 3118 | |
| 3119 | # We do not want to debug this chunk (automatic disabling works |
| 3120 | # inside DB::DB, but not in Carp). |
| 3121 | my ($mysingle,$mytrace) = ($single,$trace); |
| 3122 | $single = 0; $trace = 0; |
| 3123 | my $mess = "@_"; |
| 3124 | { |
| 3125 | package Carp; # Do not include us in the list |
| 3126 | eval { |
| 3127 | $mess = Carp::longmess(@_); |
| 3128 | }; |
| 3129 | } |
| 3130 | ($single,$trace) = ($mysingle,$mytrace); |
| 3131 | die $mess; |
| 3132 | } |
| 3133 | |
| 3134 | sub warnLevel { |
| 3135 | if (@_) { |
| 3136 | $prevwarn = $SIG{__WARN__} unless $warnLevel; |
| 3137 | $warnLevel = shift; |
| 3138 | if ($warnLevel) { |
| 3139 | $SIG{__WARN__} = \&DB::dbwarn; |
| 3140 | } elsif ($prevwarn) { |
| 3141 | $SIG{__WARN__} = $prevwarn; |
| 3142 | } |
| 3143 | } |
| 3144 | $warnLevel; |
| 3145 | } |
| 3146 | |
| 3147 | sub dieLevel { |
| 3148 | local $\ = ''; |
| 3149 | if (@_) { |
| 3150 | $prevdie = $SIG{__DIE__} unless $dieLevel; |
| 3151 | $dieLevel = shift; |
| 3152 | if ($dieLevel) { |
| 3153 | $SIG{__DIE__} = \&DB::dbdie; # if $dieLevel < 2; |
| 3154 | #$SIG{__DIE__} = \&DB::diehard if $dieLevel >= 2; |
| 3155 | print $OUT "Stack dump during die enabled", |
| 3156 | ( $dieLevel == 1 ? " outside of evals" : ""), ".\n" |
| 3157 | if $I_m_init; |
| 3158 | print $OUT "Dump printed too.\n" if $dieLevel > 2; |
| 3159 | } elsif ($prevdie) { |
| 3160 | $SIG{__DIE__} = $prevdie; |
| 3161 | print $OUT "Default die handler restored.\n"; |
| 3162 | } |
| 3163 | } |
| 3164 | $dieLevel; |
| 3165 | } |
| 3166 | |
| 3167 | sub signalLevel { |
| 3168 | if (@_) { |
| 3169 | $prevsegv = $SIG{SEGV} unless $signalLevel; |
| 3170 | $prevbus = $SIG{BUS} unless $signalLevel; |
| 3171 | $signalLevel = shift; |
| 3172 | if ($signalLevel) { |
| 3173 | $SIG{SEGV} = \&DB::diesignal; |
| 3174 | $SIG{BUS} = \&DB::diesignal; |
| 3175 | } else { |
| 3176 | $SIG{SEGV} = $prevsegv; |
| 3177 | $SIG{BUS} = $prevbus; |
| 3178 | } |
| 3179 | } |
| 3180 | $signalLevel; |
| 3181 | } |
| 3182 | |
| 3183 | sub CvGV_name { |
| 3184 | my $in = shift; |
| 3185 | my $name = CvGV_name_or_bust($in); |
| 3186 | defined $name ? $name : $in; |
| 3187 | } |
| 3188 | |
| 3189 | sub CvGV_name_or_bust { |
| 3190 | my $in = shift; |
| 3191 | return if $skipCvGV; # Backdoor to avoid problems if XS broken... |
| 3192 | return unless ref $in; |
| 3193 | $in = \&$in; # Hard reference... |
| 3194 | eval {require Devel::Peek; 1} or return; |
| 3195 | my $gv = Devel::Peek::CvGV($in) or return; |
| 3196 | *$gv{PACKAGE} . '::' . *$gv{NAME}; |
| 3197 | } |
| 3198 | |
| 3199 | sub find_sub { |
| 3200 | my $subr = shift; |
| 3201 | $sub{$subr} or do { |
| 3202 | return unless defined &$subr; |
| 3203 | my $name = CvGV_name_or_bust($subr); |
| 3204 | my $data; |
| 3205 | $data = $sub{$name} if defined $name; |
| 3206 | return $data if defined $data; |
| 3207 | |
| 3208 | # Old stupid way... |
| 3209 | $subr = \&$subr; # Hard reference |
| 3210 | my $s; |
| 3211 | for (keys %sub) { |
| 3212 | $s = $_, last if $subr eq \&$_; |
| 3213 | } |
| 3214 | $sub{$s} if $s; |
| 3215 | } |
| 3216 | } |
| 3217 | |
| 3218 | sub methods { |
| 3219 | my $class = shift; |
| 3220 | $class = ref $class if ref $class; |
| 3221 | local %seen; |
| 3222 | local %packs; |
| 3223 | methods_via($class, '', 1); |
| 3224 | methods_via('UNIVERSAL', 'UNIVERSAL', 0); |
| 3225 | } |
| 3226 | |
| 3227 | sub methods_via { |
| 3228 | my $class = shift; |
| 3229 | return if $packs{$class}++; |
| 3230 | my $prefix = shift; |
| 3231 | my $prepend = $prefix ? "via $prefix: " : ''; |
| 3232 | my $name; |
| 3233 | for $name (grep {defined &{${"${class}::"}{$_}}} |
| 3234 | sort keys %{"${class}::"}) { |
| 3235 | next if $seen{ $name }++; |
| 3236 | local $\ = ''; |
| 3237 | local $, = ''; |
| 3238 | print $DB::OUT "$prepend$name\n"; |
| 3239 | } |
| 3240 | return unless shift; # Recurse? |
| 3241 | for $name (@{"${class}::ISA"}) { |
| 3242 | $prepend = $prefix ? $prefix . " -> $name" : $name; |
| 3243 | methods_via($name, $prepend, 1); |
| 3244 | } |
| 3245 | } |
| 3246 | |
| 3247 | sub setman { |
| 3248 | $doccmd = $^O !~ /^(?:MSWin32|VMS|os2|dos|amigaos|riscos|MacOS|NetWare)\z/s |
| 3249 | ? "man" # O Happy Day! |
| 3250 | : "perldoc"; # Alas, poor unfortunates |
| 3251 | } |
| 3252 | |
| 3253 | sub runman { |
| 3254 | my $page = shift; |
| 3255 | unless ($page) { |
| 3256 | &system("$doccmd $doccmd"); |
| 3257 | return; |
| 3258 | } |
| 3259 | # this way user can override, like with $doccmd="man -Mwhatever" |
| 3260 | # or even just "man " to disable the path check. |
| 3261 | unless ($doccmd eq 'man') { |
| 3262 | &system("$doccmd $page"); |
| 3263 | return; |
| 3264 | } |
| 3265 | |
| 3266 | $page = 'perl' if lc($page) eq 'help'; |
| 3267 | |
| 3268 | require Config; |
| 3269 | my $man1dir = $Config::Config{'man1dir'}; |
| 3270 | my $man3dir = $Config::Config{'man3dir'}; |
| 3271 | for ($man1dir, $man3dir) { s#/[^/]*\z## if /\S/ } |
| 3272 | my $manpath = ''; |
| 3273 | $manpath .= "$man1dir:" if $man1dir =~ /\S/; |
| 3274 | $manpath .= "$man3dir:" if $man3dir =~ /\S/ && $man1dir ne $man3dir; |
| 3275 | chop $manpath if $manpath; |
| 3276 | # harmless if missing, I figure |
| 3277 | my $oldpath = $ENV{MANPATH}; |
| 3278 | $ENV{MANPATH} = $manpath if $manpath; |
| 3279 | my $nopathopt = $^O =~ /dunno what goes here/; |
| 3280 | if (CORE::system($doccmd, |
| 3281 | # I just *know* there are men without -M |
| 3282 | (($manpath && !$nopathopt) ? ("-M", $manpath) : ()), |
| 3283 | split ' ', $page) ) |
| 3284 | { |
| 3285 | unless ($page =~ /^perl\w/) { |
| 3286 | if (grep { $page eq $_ } qw{ |
| 3287 | 5004delta 5005delta amiga api apio book boot bot call compile |
| 3288 | cygwin data dbmfilter debug debguts delta diag doc dos dsc embed |
| 3289 | faq faq1 faq2 faq3 faq4 faq5 faq6 faq7 faq8 faq9 filter fork |
| 3290 | form func guts hack hist hpux intern ipc lexwarn locale lol mod |
| 3291 | modinstall modlib number obj op opentut os2 os390 pod port |
| 3292 | ref reftut run sec style sub syn thrtut tie toc todo toot tootc |
| 3293 | trap unicode var vms win32 xs xstut |
| 3294 | }) |
| 3295 | { |
| 3296 | $page =~ s/^/perl/; |
| 3297 | CORE::system($doccmd, |
| 3298 | (($manpath && !$nopathopt) ? ("-M", $manpath) : ()), |
| 3299 | $page); |
| 3300 | } |
| 3301 | } |
| 3302 | } |
| 3303 | if (defined $oldpath) { |
| 3304 | $ENV{MANPATH} = $manpath; |
| 3305 | } else { |
| 3306 | delete $ENV{MANPATH}; |
| 3307 | } |
| 3308 | } |
| 3309 | |
| 3310 | # The following BEGIN is very handy if debugger goes havoc, debugging debugger? |
| 3311 | |
| 3312 | BEGIN { # This does not compile, alas. |
| 3313 | $IN = \*STDIN; # For bugs before DB::OUT has been opened |
| 3314 | $OUT = \*STDERR; # For errors before DB::OUT has been opened |
| 3315 | $sh = '!'; |
| 3316 | $rc = ','; |
| 3317 | @hist = ('?'); |
| 3318 | $deep = 100; # warning if stack gets this deep |
| 3319 | $window = 10; |
| 3320 | $preview = 3; |
| 3321 | $sub = ''; |
| 3322 | $SIG{INT} = \&DB::catch; |
| 3323 | # This may be enabled to debug debugger: |
| 3324 | #$warnLevel = 1 unless defined $warnLevel; |
| 3325 | #$dieLevel = 1 unless defined $dieLevel; |
| 3326 | #$signalLevel = 1 unless defined $signalLevel; |
| 3327 | |
| 3328 | $db_stop = 0; # Compiler warning |
| 3329 | $db_stop = 1 << 30; |
| 3330 | $level = 0; # Level of recursive debugging |
| 3331 | # @stack and $doret are needed in sub sub, which is called for DB::postponed. |
| 3332 | # Triggers bug (?) in perl is we postpone this until runtime: |
| 3333 | @postponed = @stack = (0); |
| 3334 | $stack_depth = 0; # Localized $#stack |
| 3335 | $doret = -2; |
| 3336 | $frame = 0; |
| 3337 | } |
| 3338 | |
| 3339 | BEGIN {$^W = $ini_warn;} # Switch warnings back |
| 3340 | |
| 3341 | #use Carp; # This did break, left for debugging |
| 3342 | |
| 3343 | sub db_complete { |
| 3344 | # Specific code for b c l V m f O, &blah, $blah, @blah, %blah |
| 3345 | my($text, $line, $start) = @_; |
| 3346 | my ($itext, $search, $prefix, $pack) = |
| 3347 | ($text, "^\Q${'package'}::\E([^:]+)\$"); |
| 3348 | |
| 3349 | return sort grep /^\Q$text/, (keys %sub), qw(postpone load compile), # subroutines |
| 3350 | (map { /$search/ ? ($1) : () } keys %sub) |
| 3351 | if (substr $line, 0, $start) =~ /^\|*[blc]\s+((postpone|compile)\s+)?$/; |
| 3352 | return sort grep /^\Q$text/, values %INC # files |
| 3353 | if (substr $line, 0, $start) =~ /^\|*b\s+load\s+$/; |
| 3354 | return sort map {($_, db_complete($_ . "::", "V ", 2))} |
| 3355 | grep /^\Q$text/, map { /^(.*)::$/ ? ($1) : ()} keys %:: # top-packages |
| 3356 | if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ and $text =~ /^\w*$/; |
| 3357 | return sort map {($_, db_complete($_ . "::", "V ", 2))} |
| 3358 | grep !/^main::/, |
| 3359 | grep /^\Q$text/, map { /^(.*)::$/ ? ($prefix . "::$1") : ()} keys %{$prefix . '::'} |
| 3360 | # packages |
| 3361 | if (substr $line, 0, $start) =~ /^\|*[Vm]\s+$/ |
| 3362 | and $text =~ /^(.*[^:])::?(\w*)$/ and $prefix = $1; |
| 3363 | if ( $line =~ /^\|*f\s+(.*)/ ) { # Loaded files |
| 3364 | # We may want to complete to (eval 9), so $text may be wrong |
| 3365 | $prefix = length($1) - length($text); |
| 3366 | $text = $1; |
| 3367 | return sort |
| 3368 | map {substr $_, 2 + $prefix} grep /^_<\Q$text/, (keys %main::), $0 |
| 3369 | } |
| 3370 | if ((substr $text, 0, 1) eq '&') { # subroutines |
| 3371 | $text = substr $text, 1; |
| 3372 | $prefix = "&"; |
| 3373 | return sort map "$prefix$_", |
| 3374 | grep /^\Q$text/, |
| 3375 | (keys %sub), |
| 3376 | (map { /$search/ ? ($1) : () } |
| 3377 | keys %sub); |
| 3378 | } |
| 3379 | if ($text =~ /^[\$@%](.*)::(.*)/) { # symbols in a package |
| 3380 | $pack = ($1 eq 'main' ? '' : $1) . '::'; |
| 3381 | $prefix = (substr $text, 0, 1) . $1 . '::'; |
| 3382 | $text = $2; |
| 3383 | my @out |
| 3384 | = map "$prefix$_", grep /^\Q$text/, grep /^_?[a-zA-Z]/, keys %$pack ; |
| 3385 | if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) { |
| 3386 | return db_complete($out[0], $line, $start); |
| 3387 | } |
| 3388 | return sort @out; |
| 3389 | } |
| 3390 | if ($text =~ /^[\$@%]/) { # symbols (in $package + packages in main) |
| 3391 | $pack = ($package eq 'main' ? '' : $package) . '::'; |
| 3392 | $prefix = substr $text, 0, 1; |
| 3393 | $text = substr $text, 1; |
| 3394 | my @out = map "$prefix$_", grep /^\Q$text/, |
| 3395 | (grep /^_?[a-zA-Z]/, keys %$pack), |
| 3396 | ( $pack eq '::' ? () : (grep /::$/, keys %::) ) ; |
| 3397 | if (@out == 1 and $out[0] =~ /::$/ and $out[0] ne $itext) { |
| 3398 | return db_complete($out[0], $line, $start); |
| 3399 | } |
| 3400 | return sort @out; |
| 3401 | } |
| 3402 | if ((substr $line, 0, $start) =~ /^\|*O\b.*\s$/) { # Options after a space |
| 3403 | my @out = grep /^\Q$text/, @options; |
| 3404 | my $val = option_val($out[0], undef); |
| 3405 | my $out = '? '; |
| 3406 | if (not defined $val or $val =~ /[\n\r]/) { |
| 3407 | # Can do nothing better |
| 3408 | } elsif ($val =~ /\s/) { |
| 3409 | my $found; |
| 3410 | foreach $l (split //, qq/\"\'\#\|/) { |
| 3411 | $out = "$l$val$l ", last if (index $val, $l) == -1; |
| 3412 | } |
| 3413 | } else { |
| 3414 | $out = "=$val "; |
| 3415 | } |
| 3416 | # Default to value if one completion, to question if many |
| 3417 | $rl_attribs->{completer_terminator_character} = (@out == 1 ? $out : '? '); |
| 3418 | return sort @out; |
| 3419 | } |
| 3420 | return $term->filename_list($text); # filenames |
| 3421 | } |
| 3422 | |
| 3423 | sub end_report { |
| 3424 | local $\ = ''; |
| 3425 | print $OUT "Use `q' to quit or `R' to restart. `h q' for details.\n" |
| 3426 | } |
| 3427 | |
| 3428 | sub clean_ENV { |
| 3429 | if (defined($ini_pids)) { |
| 3430 | $ENV{PERLDB_PIDS} = $ini_pids; |
| 3431 | } else { |
| 3432 | delete($ENV{PERLDB_PIDS}); |
| 3433 | } |
| 3434 | } |
| 3435 | |
| 3436 | END { |
| 3437 | $finished = 1 if $inhibit_exit; # So that some keys may be disabled. |
| 3438 | $fall_off_end = 1 unless $inhibit_exit; |
| 3439 | # Do not stop in at_exit() and destructors on exit: |
| 3440 | $DB::single = !$fall_off_end && !$runnonstop; |
| 3441 | DB::fake::at_exit() unless $fall_off_end or $runnonstop; |
| 3442 | } |
| 3443 | |
| 3444 | |
| 3445 | # ===================================== pre580 ================================ |
| 3446 | # this is very sad below here... |
| 3447 | # |
| 3448 | |
| 3449 | sub cmd_pre580_null { |
| 3450 | # do nothing... |
| 3451 | } |
| 3452 | |
| 3453 | sub cmd_pre580_a { |
| 3454 | my $cmd = shift; |
| 3455 | if ($cmd =~ /^(\d*)\s*(.*)/) { |
| 3456 | $i = $1 || $line; $j = $2; |
| 3457 | if (length $j) { |
| 3458 | if ($dbline[$i] == 0) { |
| 3459 | print $OUT "Line $i may not have an action.\n"; |
| 3460 | } else { |
| 3461 | $had_breakpoints{$filename} |= 2; |
| 3462 | $dbline{$i} =~ s/\0[^\0]*//; |
| 3463 | $dbline{$i} .= "\0" . action($j); |
| 3464 | } |
| 3465 | } else { |
| 3466 | $dbline{$i} =~ s/\0[^\0]*//; |
| 3467 | delete $dbline{$i} if $dbline{$i} eq ''; |
| 3468 | } |
| 3469 | } |
| 3470 | } |
| 3471 | |
| 3472 | sub cmd_pre580_b { |
| 3473 | my $cmd = shift; |
| 3474 | my $dbline = shift; |
| 3475 | if ($cmd =~ /^load\b\s*(.*)/) { |
| 3476 | my $file = $1; $file =~ s/\s+$//; |
| 3477 | &cmd_b_load($file); |
| 3478 | } elsif ($cmd =~ /^(postpone|compile)\b\s*([':A-Za-z_][':\w]*)\s*(.*)/) { |
| 3479 | my $cond = length $3 ? $3 : '1'; |
| 3480 | my ($subname, $break) = ($2, $1 eq 'postpone'); |
| 3481 | $subname =~ s/\'/::/g; |
| 3482 | $subname = "${'package'}::" . $subname |
| 3483 | unless $subname =~ /::/; |
| 3484 | $subname = "main".$subname if substr($subname,0,2) eq "::"; |
| 3485 | $postponed{$subname} = $break ? "break +0 if $cond" : "compile"; |
| 3486 | } elsif ($cmd =~ /^([':A-Za-z_][':\w]*(?:\[.*\])?)\s*(.*)/) { |
| 3487 | my $subname = $1; |
| 3488 | my $cond = length $2 ? $2 : '1'; |
| 3489 | &cmd_b_sub($subname, $cond); |
| 3490 | } elsif ($cmd =~ /^(\d*)\s*(.*)/) { |
| 3491 | my $i = $1 || $dbline; |
| 3492 | my $cond = length $2 ? $2 : '1'; |
| 3493 | &cmd_b_line($i, $cond); |
| 3494 | } |
| 3495 | } |
| 3496 | |
| 3497 | sub cmd_pre580_D { |
| 3498 | my $cmd = shift; |
| 3499 | if ($cmd =~ /^\s*$/) { |
| 3500 | print $OUT "Deleting all breakpoints...\n"; |
| 3501 | my $file; |
| 3502 | for $file (keys %had_breakpoints) { |
| 3503 | local *dbline = $main::{'_<' . $file}; |
| 3504 | my $max = $#dbline; |
| 3505 | my $was; |
| 3506 | |
| 3507 | for ($i = 1; $i <= $max ; $i++) { |
| 3508 | if (defined $dbline{$i}) { |
| 3509 | $dbline{$i} =~ s/^[^\0]+//; |
| 3510 | if ($dbline{$i} =~ s/^\0?$//) { |
| 3511 | delete $dbline{$i}; |
| 3512 | } |
| 3513 | } |
| 3514 | } |
| 3515 | |
| 3516 | if (not $had_breakpoints{$file} &= ~1) { |
| 3517 | delete $had_breakpoints{$file}; |
| 3518 | } |
| 3519 | } |
| 3520 | undef %postponed; |
| 3521 | undef %postponed_file; |
| 3522 | undef %break_on_load; |
| 3523 | } |
| 3524 | } |
| 3525 | |
| 3526 | sub cmd_pre580_h { |
| 3527 | my $cmd = shift; |
| 3528 | if ($cmd =~ /^\s*$/) { |
| 3529 | print_help($pre580_help); |
| 3530 | } elsif ($cmd =~ /^h\s*/) { |
| 3531 | print_help($pre580_summary); |
| 3532 | } elsif ($cmd =~ /^h\s+(\S.*)$/) { |
| 3533 | my $asked = $1; # for proper errmsg |
| 3534 | my $qasked = quotemeta($asked); # for searching |
| 3535 | # XXX: finds CR but not <CR> |
| 3536 | if ($pre580_help =~ /^<?(?:[IB]<)$qasked/m) { |
| 3537 | while ($pre580_help =~ /^(<?(?:[IB]<)$qasked([\s\S]*?)\n)(?!\s)/mg) { |
| 3538 | print_help($1); |
| 3539 | } |
| 3540 | } else { |
| 3541 | print_help("B<$asked> is not a debugger command.\n"); |
| 3542 | } |
| 3543 | } |
| 3544 | } |
| 3545 | |
| 3546 | sub cmd_pre580_W { |
| 3547 | my $cmd = shift; |
| 3548 | if ($cmd =~ /^$/) { |
| 3549 | $trace &= ~2; |
| 3550 | @to_watch = @old_watch = (); |
| 3551 | } elsif ($cmd =~ /^(.*)/s) { |
| 3552 | push @to_watch, $1; |
| 3553 | $evalarg = $1; |
| 3554 | my ($val) = &eval; |
| 3555 | $val = (defined $val) ? "'$val'" : 'undef' ; |
| 3556 | push @old_watch, $val; |
| 3557 | $trace |= 2; |
| 3558 | } |
| 3559 | } |
| 3560 | |
| 3561 | package DB::fake; |
| 3562 | |
| 3563 | sub at_exit { |
| 3564 | "Debugged program terminated. Use `q' to quit or `R' to restart."; |
| 3565 | } |
| 3566 | |
| 3567 | package DB; # Do not trace this 1; below! |
| 3568 | |
| 3569 | 1; |
| 3570 | |