Commit | Line | Data |
---|---|---|
a687059c LW |
1 | package DB; |
2 | ||
54d04a52 | 3 | # Debugger for Perl 5.00x; perl5db.pl patch level: |
d338d6fe | 4 | |
54d04a52 | 5 | $header = 'perl5db.pl patch level 0.94'; |
d338d6fe | 6 | |
7 | # Enhanced by ilya@math.ohio-state.edu (Ilya Zakharevich) | |
8 | # Latest version available: ftp://ftp.math.ohio-state.edu/pub/users/ilya/perl | |
9 | ||
10 | # modified Perl debugger, to be run from Emacs in perldb-mode | |
11 | # Ray Lischner (uunet!mntgfx!lisch) as of 5 Nov 1990 | |
12 | # Johan Vromans -- upgrade to 4.0 pl 10 | |
13 | # Ilya Zakharevich -- patches after 5.001 (and some before ;-) | |
14 | ||
15 | # | |
16 | # This file is automatically included if you do perl -d. | |
17 | # It's probably not useful to include this yourself. | |
18 | # | |
19 | # Perl supplies the values for @line and %sub. It effectively inserts | |
20 | # a &DB'DB(<linenum>); in front of every place that can have a | |
21 | # breakpoint. Instead of a subroutine call it calls &DB::sub with | |
22 | # $DB::sub being the called subroutine. It also inserts a BEGIN | |
23 | # {require 'perl5db.pl'} before the first line. | |
24 | # | |
25 | # Note that no subroutine call is possible until &DB::sub is defined | |
26 | # (for subroutines defined outside this file). In fact the same is | |
27 | # true if $deep is not defined. | |
28 | # | |
29 | # $Log: perldb.pl,v $ | |
30 | ||
31 | # | |
32 | # At start reads $rcfile that may set important options. This file | |
33 | # may define a subroutine &afterinit that will be executed after the | |
34 | # debugger is initialized. | |
35 | # | |
36 | # After $rcfile is read reads environment variable PERLDB_OPTS and parses | |
37 | # it as a rest of `O ...' line in debugger prompt. | |
38 | # | |
39 | # The options that can be specified only at startup: | |
40 | # [To set in $rcfile, call &parse_options("optionName=new_value").] | |
41 | # | |
42 | # TTY - the TTY to use for debugging i/o. | |
43 | # | |
44 | # noTTY - if set, goes in NonStop mode. On interrupt if TTY is not set | |
45 | # uses the value of noTTY or "/tmp/perldbtty$$" to find TTY using | |
46 | # Term::Rendezvous. Current variant is to have the name of TTY in this | |
47 | # file. | |
48 | # | |
49 | # ReadLine - If false, dummy ReadLine is used, so you can debug | |
50 | # ReadLine applications. | |
51 | # | |
52 | # NonStop - if true, no i/o is performed until interrupt. | |
53 | # | |
54 | # LineInfo - file or pipe to print line number info to. If it is a | |
55 | # pipe, a short "emacs like" message is used. | |
56 | # | |
57 | # Example $rcfile: (delete leading hashes!) | |
58 | # | |
59 | # &parse_options("NonStop=1 LineInfo=db.out"); | |
60 | # sub afterinit { $trace = 1; } | |
61 | # | |
62 | # The script will run without human intervention, putting trace | |
63 | # information into db.out. (If you interrupt it, you would better | |
64 | # reset LineInfo to something "interactive"!) | |
65 | # | |
66 | ||
54d04a52 | 67 | # Needed for the statement after exec(): |
d338d6fe | 68 | |
54d04a52 IZ |
69 | BEGIN { $ini_warn = $^W; $^W = 0 } # Switch compilation warnings off until another BEGIN. |
70 | local($^W) = 0; # Switch run-time warnings off during init. | |
d338d6fe | 71 | warn ( # Do not ;-) |
72 | $dumpvar::hashDepth, | |
73 | $dumpvar::arrayDepth, | |
74 | $dumpvar::dumpDBFiles, | |
75 | $dumpvar::dumpPackages, | |
76 | $dumpvar::quoteHighBit, | |
77 | $dumpvar::printUndef, | |
78 | $dumpvar::globPrint, | |
79 | $readline::Tk_toloop, | |
80 | $dumpvar::usageOnly, | |
81 | @ARGS, | |
82 | $Carp::CarpLevel, | |
54d04a52 IZ |
83 | $panic, |
84 | $first_time, | |
d338d6fe | 85 | ) if 0; |
86 | ||
54d04a52 IZ |
87 | # Command-line + PERLLIB: |
88 | @ini_INC = @INC; | |
89 | ||
d338d6fe | 90 | # $prevwarn = $prevdie = $prevbus = $prevsegv = ''; # Does not help?! |
91 | ||
92 | $trace = $signal = $single = 0; # Uninitialized warning suppression | |
93 | # (local $^W cannot help - other packages!). | |
94 | @stack = (0); | |
95 | ||
96 | $option{PrintRet} = 1; | |
97 | ||
98 | @options = qw(hashDepth arrayDepth DumpDBFiles DumpPackages | |
99 | compactDump veryCompact quote HighBit undefPrint | |
100 | globPrint PrintRet UsageOnly frame | |
101 | TTY noTTY ReadLine NonStop LineInfo | |
102 | recallCommand ShellBang pager tkRunning | |
103 | signalLevel warnLevel dieLevel); | |
104 | ||
105 | %optionVars = ( | |
106 | hashDepth => \$dumpvar::hashDepth, | |
107 | arrayDepth => \$dumpvar::arrayDepth, | |
108 | DumpDBFiles => \$dumpvar::dumpDBFiles, | |
109 | DumpPackages => \$dumpvar::dumpPackages, | |
110 | HighBit => \$dumpvar::quoteHighBit, | |
111 | undefPrint => \$dumpvar::printUndef, | |
112 | globPrint => \$dumpvar::globPrint, | |
113 | tkRunning => \$readline::Tk_toloop, | |
114 | UsageOnly => \$dumpvar::usageOnly, | |
115 | frame => \$frame, | |
116 | ); | |
117 | ||
118 | %optionAction = ( | |
119 | compactDump => \&dumpvar::compactDump, | |
120 | veryCompact => \&dumpvar::veryCompact, | |
121 | quote => \&dumpvar::quote, | |
122 | TTY => \&TTY, | |
123 | noTTY => \&noTTY, | |
124 | ReadLine => \&ReadLine, | |
125 | NonStop => \&NonStop, | |
126 | LineInfo => \&LineInfo, | |
127 | recallCommand => \&recallCommand, | |
128 | ShellBang => \&shellBang, | |
129 | pager => \&pager, | |
130 | signalLevel => \&signalLevel, | |
131 | warnLevel => \&warnLevel, | |
132 | dieLevel => \&dieLevel, | |
133 | ); | |
134 | ||
135 | %optionRequire = ( | |
136 | compactDump => 'dumpvar.pl', | |
137 | veryCompact => 'dumpvar.pl', | |
138 | quote => 'dumpvar.pl', | |
139 | ); | |
140 | ||
141 | # These guys may be defined in $ENV{PERL5DB} : | |
142 | $rl = 1 unless defined $rl; | |
143 | warnLevel($warnLevel); | |
144 | dieLevel($dieLevel); | |
145 | signalLevel($signalLevel); | |
146 | &pager(defined($ENV{PAGER}) ? $ENV{PAGER} : "|more") unless defined $pager; | |
147 | &recallCommand("!") unless defined $prc; | |
148 | &shellBang("!") unless defined $psh; | |
149 | ||
150 | if (-e "/dev/tty") { | |
151 | $rcfile=".perldb"; | |
152 | } else { | |
153 | $rcfile="perldb.ini"; | |
154 | } | |
155 | ||
156 | if (-f $rcfile) { | |
157 | do "./$rcfile"; | |
158 | } elsif (defined $ENV{LOGDIR} and -f "$ENV{LOGDIR}/$rcfile") { | |
159 | do "$ENV{LOGDIR}/$rcfile"; | |
160 | } elsif (defined $ENV{HOME} and -f "$ENV{HOME}/$rcfile") { | |
161 | do "$ENV{HOME}/$rcfile"; | |
162 | } | |
163 | ||
164 | if (defined $ENV{PERLDB_OPTS}) { | |
165 | parse_options($ENV{PERLDB_OPTS}); | |
166 | } | |
167 | ||
54d04a52 IZ |
168 | if (exists $ENV{PERLDB_RESTART}) { |
169 | delete $ENV{PERLDB_RESTART}; | |
170 | # $restart = 1; | |
171 | @hist = get_list('PERLDB_HIST'); | |
172 | my @visited = get_list("PERLDB_VISITED"); | |
173 | for (0 .. $#visited) { | |
174 | %{$postponed{$visited[$_]}} = get_list("PERLDB_FILE_$_"); | |
175 | } | |
176 | my %opt = get_list("PERLDB_OPT"); | |
177 | my ($opt,$val); | |
178 | while (($opt,$val) = each %opt) { | |
179 | $val =~ s/[\\\']/\\$1/g; | |
180 | parse_options("$opt'$val'"); | |
181 | } | |
182 | @INC = get_list("PERLDB_INC"); | |
183 | @ini_INC = @INC; | |
184 | } | |
185 | ||
d338d6fe | 186 | if ($notty) { |
187 | $runnonstop = 1; | |
188 | } else { | |
189 | # Is Perl being run from Emacs? | |
190 | $emacs = ((defined $main::ARGV[0]) and ($main::ARGV[0] eq '-emacs')); | |
191 | $rl = 0, shift(@main::ARGV) if $emacs; | |
192 | ||
193 | #require Term::ReadLine; | |
194 | ||
195 | if (-e "/dev/tty") { | |
196 | $console = "/dev/tty"; | |
197 | } elsif (-e "con") { | |
198 | $console = "con"; | |
199 | } else { | |
200 | $console = "sys\$command"; | |
201 | } | |
202 | ||
203 | # Around a bug: | |
204 | if (defined $ENV{OS2_SHELL} and $emacs) { # In OS/2 | |
205 | $console = undef; | |
206 | } | |
207 | ||
208 | $console = $tty if defined $tty; | |
209 | ||
210 | if (defined $console) { | |
211 | open(IN,"+<$console") || open(IN,"<$console") || open(IN,"<&STDIN"); | |
212 | open(OUT,"+>$console") || open(OUT,">$console") || open(OUT,">&STDERR") | |
213 | || open(OUT,">&STDOUT"); # so we don't dongle stdout | |
214 | } else { | |
215 | open(IN,"<&STDIN"); | |
216 | open(OUT,">&STDERR") || open(OUT,">&STDOUT"); # so we don't dongle stdout | |
217 | $console = 'STDIN/OUT'; | |
218 | } | |
219 | # so open("|more") can read from STDOUT and so we don't dingle stdin | |
220 | $IN = \*IN; | |
221 | ||
222 | $OUT = \*OUT; | |
223 | select($OUT); | |
224 | $| = 1; # for DB::OUT | |
225 | select(STDOUT); | |
226 | ||
227 | $LINEINFO = $OUT unless defined $LINEINFO; | |
228 | $lineinfo = $console unless defined $lineinfo; | |
229 | ||
230 | $| = 1; # for real STDOUT | |
231 | ||
232 | $header =~ s/.Header: ([^,]+),v(\s+\S+\s+\S+).*$/$1$2/; | |
233 | unless ($runnonstop) { | |
234 | print $OUT "\nLoading DB routines from $header\n"; | |
235 | print $OUT ("Emacs support ", | |
236 | $emacs ? "enabled" : "available", | |
237 | ".\n"); | |
238 | print $OUT "\nEnter h or `h h' for help.\n\n"; | |
239 | } | |
240 | } | |
241 | ||
242 | @ARGS = @ARGV; | |
243 | for (@args) { | |
244 | s/\'/\\\'/g; | |
245 | s/(.*)/'$1'/ unless /^-?[\d.]+$/; | |
246 | } | |
247 | ||
248 | if (defined &afterinit) { # May be defined in $rcfile | |
249 | &afterinit(); | |
250 | } | |
251 | ||
252 | ############################################################ Subroutines | |
253 | ||
d338d6fe | 254 | sub DB { |
54d04a52 IZ |
255 | unless ($first_time++) { # Do when-running init |
256 | if ($runnonstop) { # Disable until signal | |
d338d6fe | 257 | for ($i=0; $i <= $#stack; ) { |
258 | $stack[$i++] &= ~1; | |
259 | } | |
54d04a52 | 260 | $single = 0; |
d338d6fe | 261 | return; |
54d04a52 IZ |
262 | } |
263 | # Define a subroutine in which we will stop | |
264 | # eval <<'EOE'; | |
265 | # sub at_end::db {"Debuggee terminating";} | |
266 | # END { | |
267 | # $DB::step = 1; | |
268 | # print $OUT "Debuggee terminating.\n"; | |
269 | # &at_end::db;} | |
270 | # EOE | |
d338d6fe | 271 | } |
272 | &save; | |
273 | if ($doret) { | |
274 | $doret = 0; | |
275 | if ($option{PrintRet}) { | |
276 | print $OUT "$retctx context return from $lastsub:", | |
277 | ($retctx eq 'list') ? "\n" : " " ; | |
278 | dumpit( ($retctx eq 'list') ? \@ret : $ret ); | |
279 | } | |
280 | } | |
281 | ($package, $filename, $line) = caller; | |
54d04a52 | 282 | $filename_ini = $filename; |
d338d6fe | 283 | $usercontext = '($@, $!, $,, $/, $\, $^W) = @saved;' . |
284 | "package $package;"; # this won't let them modify, alas | |
285 | local(*dbline) = "::_<$filename"; | |
54d04a52 | 286 | install_breakpoints($filename) unless $visited{$filename}++; |
d338d6fe | 287 | $max = $#dbline; |
288 | if (($stop,$action) = split(/\0/,$dbline{$line})) { | |
289 | if ($stop eq '1') { | |
290 | $signal |= 1; | |
54d04a52 | 291 | } elsif ($stop) { |
d338d6fe | 292 | $evalarg = "\$DB::signal |= do {$stop;}"; &eval; |
293 | $dbline{$line} =~ s/;9($|\0)/$1/; | |
294 | } | |
295 | } | |
296 | if ($single || $trace || $signal) { | |
297 | $term || &setterm; | |
298 | if ($emacs) { | |
54d04a52 IZ |
299 | $position = "\032\032$filename:$line:0\n"; |
300 | print $LINEINFO $position; | |
d338d6fe | 301 | } else { |
302 | $sub =~ s/\'/::/; | |
303 | $prefix = $sub =~ /::/ ? "" : "${'package'}::"; | |
304 | $prefix .= "$sub($filename:"; | |
305 | $after = ($dbline[$line] =~ /\n$/ ? '' : "\n"); | |
306 | if (length($prefix) > 30) { | |
54d04a52 IZ |
307 | $position = "$prefix$line):\n$line:\t$dbline[$line]$after"; |
308 | print $LINEINFO $position; | |
d338d6fe | 309 | $prefix = ""; |
310 | $infix = ":\t"; | |
311 | } else { | |
312 | $infix = "):\t"; | |
54d04a52 IZ |
313 | $position = "$prefix$line$infix$dbline[$line]$after"; |
314 | print $LINEINFO $position; | |
d338d6fe | 315 | } |
316 | for ($i = $line + 1; $i <= $max && $dbline[$i] == 0; ++$i) { #{ vi | |
317 | last if $dbline[$i] =~ /^\s*[\;\}\#\n]/; | |
318 | $after = ($dbline[$i] =~ /\n$/ ? '' : "\n"); | |
54d04a52 IZ |
319 | $incr_pos = "$prefix$i$infix$dbline[$i]$after"; |
320 | print $LINEINFO $incr_pos; | |
321 | $position .= $incr_pos; | |
d338d6fe | 322 | } |
323 | } | |
324 | } | |
325 | $evalarg = $action, &eval if $action; | |
326 | if ($single || $signal) { | |
327 | local $level = $level + 1; | |
328 | $evalarg = $pre, &eval if $pre; | |
329 | print $OUT $#stack . " levels deep in subroutine calls!\n" | |
330 | if $single & 4; | |
331 | $start = $line; | |
332 | CMD: | |
333 | while (($term || &setterm), | |
54d04a52 IZ |
334 | defined ($cmd=&readline(" DB" . ('<' x $level) . |
335 | ($#hist+1) . ('>' x $level) . | |
336 | " "))) { | |
337 | #{ # <-- Do we know what this brace is for? | |
d338d6fe | 338 | $single = 0; |
339 | $signal = 0; | |
340 | $cmd =~ s/\\$/\n/ && do { | |
54d04a52 | 341 | $cmd .= &readline(" cont: "); |
d338d6fe | 342 | redo CMD; |
343 | }; | |
344 | $cmd =~ /^q$/ && exit 0; | |
345 | $cmd =~ /^$/ && ($cmd = $laststep); | |
346 | push(@hist,$cmd) if length($cmd) > 1; | |
347 | PIPE: { | |
348 | ($i) = split(/\s+/,$cmd); | |
349 | eval "\$cmd =~ $alias{$i}", print $OUT $@ if $alias{$i}; | |
350 | $cmd =~ /^h$/ && do { | |
351 | print $OUT $help; | |
352 | next CMD; }; | |
353 | $cmd =~ /^h\s+h$/ && do { | |
354 | print $OUT $summary; | |
355 | next CMD; }; | |
356 | $cmd =~ /^h\s+(\S)$/ && do { | |
357 | my $asked = "\Q$1"; | |
358 | if ($help =~ /^($asked([\s\S]*?)\n)(\Z|[^\s$asked])/m) { | |
359 | print $OUT $1; | |
360 | } else { | |
361 | print $OUT "`$asked' is not a debugger command.\n"; | |
362 | } | |
363 | next CMD; }; | |
364 | $cmd =~ /^t$/ && do { | |
365 | $trace = !$trace; | |
366 | print $OUT "Trace = ".($trace?"on":"off")."\n"; | |
367 | next CMD; }; | |
368 | $cmd =~ /^S(\s+(!)?(.+))?$/ && do { | |
369 | $Srev = defined $2; $Spatt = $3; $Snocheck = ! defined $1; | |
370 | foreach $subname (sort(keys %sub)) { | |
371 | if ($Snocheck or $Srev^($subname =~ /$Spatt/)) { | |
372 | print $OUT $subname,"\n"; | |
373 | } | |
374 | } | |
375 | next CMD; }; | |
376 | $cmd =~ s/^X\b/V $package/; | |
377 | $cmd =~ /^V$/ && do { | |
378 | $cmd = "V $package"; }; | |
379 | $cmd =~ /^V\b\s*(\S+)\s*(.*)/ && do { | |
380 | local ($savout) = select($OUT); | |
381 | $packname = $1; | |
382 | @vars = split(' ',$2); | |
383 | do 'dumpvar.pl' unless defined &main::dumpvar; | |
384 | if (defined &main::dumpvar) { | |
54d04a52 | 385 | local $frame = 0; |
d338d6fe | 386 | &main::dumpvar($packname,@vars); |
387 | } else { | |
388 | print $OUT "dumpvar.pl not available.\n"; | |
389 | } | |
390 | select ($savout); | |
391 | next CMD; }; | |
392 | $cmd =~ s/^x\b/ / && do { # So that will be evaled | |
393 | $onetimeDump = 1; }; | |
394 | $cmd =~ /^f\b\s*(.*)/ && do { | |
395 | $file = $1; | |
396 | if (!$file) { | |
397 | print $OUT "The old f command is now the r command.\n"; | |
398 | print $OUT "The new f command switches filenames.\n"; | |
399 | next CMD; | |
400 | } | |
401 | if (!defined $main::{'_<' . $file}) { | |
402 | if (($try) = grep(m#^_<.*$file#, keys %main::)) {{ | |
403 | $file = substr($try,2); | |
404 | print "\n$file:\n"; | |
405 | }} | |
406 | } | |
407 | if (!defined $main::{'_<' . $file}) { | |
408 | print $OUT "There's no code here matching $file.\n"; | |
409 | next CMD; | |
410 | } elsif ($file ne $filename) { | |
411 | *dbline = "::_<$file"; | |
54d04a52 | 412 | $visited{$file}++; |
d338d6fe | 413 | $max = $#dbline; |
414 | $filename = $file; | |
415 | $start = 1; | |
416 | $cmd = "l"; | |
417 | } }; | |
418 | $cmd =~ /^l\b\s*([\':A-Za-z_][\':\w]*)/ && do { | |
419 | $subname = $1; | |
420 | $subname =~ s/\'/::/; | |
421 | $subname = "main::".$subname unless $subname =~ /::/; | |
422 | $subname = "main".$subname if substr($subname,0,2) eq "::"; | |
423 | @pieces = split(/:/,$sub{$subname}); | |
424 | $subrange = pop @pieces; | |
425 | $file = join(':', @pieces); | |
426 | if ($file ne $filename) { | |
427 | *dbline = "::_<$file"; | |
54d04a52 | 428 | $visited{$file}++; |
d338d6fe | 429 | $max = $#dbline; |
430 | $filename = $file; | |
431 | } | |
432 | if ($subrange) { | |
433 | if (eval($subrange) < -$window) { | |
434 | $subrange =~ s/-.*/+/; | |
435 | } | |
436 | $cmd = "l $subrange"; | |
437 | } else { | |
438 | print $OUT "Subroutine $subname not found.\n"; | |
439 | next CMD; | |
440 | } }; | |
54d04a52 IZ |
441 | $cmd =~ /^\.$/ && do { |
442 | $start = $line; | |
443 | $filename = $filename_ini; | |
444 | *dbline = "::_<$filename"; | |
445 | $max = $#dbline; | |
446 | print $LINEINFO $position; | |
447 | next CMD }; | |
d338d6fe | 448 | $cmd =~ /^w\b\s*(\d*)$/ && do { |
449 | $incr = $window - 1; | |
450 | $start = $1 if $1; | |
451 | $start -= $preview; | |
54d04a52 | 452 | #print $OUT 'l ' . $start . '-' . ($start + $incr); |
d338d6fe | 453 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; |
454 | $cmd =~ /^-$/ && do { | |
455 | $incr = $window - 1; | |
456 | $cmd = 'l ' . ($start-$window*2) . '+'; }; | |
457 | $cmd =~ /^l$/ && do { | |
458 | $incr = $window - 1; | |
459 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; | |
460 | $cmd =~ /^l\b\s*(\d*)\+(\d*)$/ && do { | |
461 | $start = $1 if $1; | |
462 | $incr = $2; | |
463 | $incr = $window - 1 unless $incr; | |
464 | $cmd = 'l ' . $start . '-' . ($start + $incr); }; | |
54d04a52 IZ |
465 | $cmd =~ /^l\b\s*((-?[\d\$\.]+)([-,]([\d\$\.]+))?)?/ && do { |
466 | $end = (!defined $2) ? $max : ($4 ? $4 : $2); | |
d338d6fe | 467 | $end = $max if $end > $max; |
468 | $i = $2; | |
469 | $i = $line if $i eq '.'; | |
470 | $i = 1 if $i < 1; | |
471 | if ($emacs) { | |
472 | print $OUT "\032\032$filename:$i:0\n"; | |
473 | $i = $end; | |
474 | } else { | |
475 | for (; $i <= $end; $i++) { | |
54d04a52 IZ |
476 | ($stop,$action) = split(/\0/, $dbline{$i}); |
477 | $arrow = ($i==$line | |
478 | and $filename eq $filename_ini) | |
479 | ? '==>' | |
480 | : ':' ; | |
481 | $arrow .= 'b' if $stop; | |
482 | $arrow .= 'a' if $action; | |
483 | print $OUT "$i$arrow\t", $dbline[$i]; | |
d338d6fe | 484 | last if $signal; |
485 | } | |
486 | } | |
487 | $start = $i; # remember in case they want more | |
488 | $start = $max if $start > $max; | |
489 | next CMD; }; | |
490 | $cmd =~ /^D$/ && do { | |
491 | print $OUT "Deleting all breakpoints...\n"; | |
492 | for ($i = 1; $i <= $max ; $i++) { | |
493 | if (defined $dbline{$i}) { | |
494 | $dbline{$i} =~ s/^[^\0]+//; | |
495 | if ($dbline{$i} =~ s/^\0?$//) { | |
496 | delete $dbline{$i}; | |
497 | } | |
498 | } | |
499 | } | |
500 | next CMD; }; | |
501 | $cmd =~ /^L$/ && do { | |
502 | for ($i = 1; $i <= $max; $i++) { | |
503 | if (defined $dbline{$i}) { | |
504 | print $OUT "$i:\t", $dbline[$i]; | |
505 | ($stop,$action) = split(/\0/, $dbline{$i}); | |
506 | print $OUT " break if (", $stop, ")\n" | |
507 | if $stop; | |
508 | print $OUT " action: ", $action, "\n" | |
509 | if $action; | |
510 | last if $signal; | |
511 | } | |
512 | } | |
513 | next CMD; }; | |
514 | $cmd =~ /^b\b\s*([':A-Za-z_][':\w]*)\s*(.*)/ && do { | |
515 | $subname = $1; | |
516 | $cond = $2 || '1'; | |
517 | $subname =~ s/\'/::/; | |
518 | $subname = "${'package'}::" . $subname | |
519 | unless $subname =~ /::/; | |
520 | $subname = "main".$subname if substr($subname,0,2) eq "::"; | |
521 | # Filename below can contain ':' | |
522 | ($file,$i) = ($sub{$subname} =~ /^(.*):(.*)$/); | |
523 | $i += 0; | |
524 | if ($i) { | |
525 | $filename = $file; | |
526 | *dbline = "::_<$filename"; | |
54d04a52 | 527 | $visited{$filename}++; |
d338d6fe | 528 | $max = $#dbline; |
529 | ++$i while $dbline[$i] == 0 && $i < $max; | |
530 | $dbline{$i} =~ s/^[^\0]*/$cond/; | |
531 | } else { | |
532 | print $OUT "Subroutine $subname not found.\n"; | |
533 | } | |
534 | next CMD; }; | |
535 | $cmd =~ /^b\b\s*(\d*)\s*(.*)/ && do { | |
536 | $i = ($1?$1:$line); | |
537 | $cond = $2 || '1'; | |
538 | if ($dbline[$i] == 0) { | |
539 | print $OUT "Line $i not breakable.\n"; | |
540 | } else { | |
541 | $dbline{$i} =~ s/^[^\0]*/$cond/; | |
542 | } | |
543 | next CMD; }; | |
544 | $cmd =~ /^d\b\s*(\d+)?/ && do { | |
545 | $i = ($1?$1:$line); | |
546 | $dbline{$i} =~ s/^[^\0]*//; | |
547 | delete $dbline{$i} if $dbline{$i} eq ''; | |
548 | next CMD; }; | |
549 | $cmd =~ /^A$/ && do { | |
550 | for ($i = 1; $i <= $max ; $i++) { | |
551 | if (defined $dbline{$i}) { | |
552 | $dbline{$i} =~ s/\0[^\0]*//; | |
553 | delete $dbline{$i} if $dbline{$i} eq ''; | |
554 | } | |
555 | } | |
556 | next CMD; }; | |
557 | $cmd =~ /^O\s*$/ && do { | |
558 | for (@options) { | |
559 | &dump_option($_); | |
560 | } | |
561 | next CMD; }; | |
562 | $cmd =~ /^O\s*(\S.*)/ && do { | |
563 | parse_options($1); | |
564 | next CMD; }; | |
565 | $cmd =~ /^<\s*(.*)/ && do { | |
566 | $pre = action($1); | |
567 | next CMD; }; | |
568 | $cmd =~ /^>\s*(.*)/ && do { | |
569 | $post = action($1); | |
570 | next CMD; }; | |
571 | $cmd =~ /^a\b\s*(\d+)(\s+(.*))?/ && do { | |
572 | $i = $1; $j = $3; | |
573 | if ($dbline[$i] == 0) { | |
574 | print $OUT "Line $i may not have an action.\n"; | |
575 | } else { | |
576 | $dbline{$i} =~ s/\0[^\0]*//; | |
577 | $dbline{$i} .= "\0" . action($j); | |
578 | } | |
579 | next CMD; }; | |
580 | $cmd =~ /^n$/ && do { | |
581 | $single = 2; | |
582 | $laststep = $cmd; | |
583 | last CMD; }; | |
584 | $cmd =~ /^s$/ && do { | |
585 | $single = 1; | |
586 | $laststep = $cmd; | |
587 | last CMD; }; | |
54d04a52 | 588 | $cmd =~ /^c\b\s*([\w:]*)\s*$/ && do { |
d338d6fe | 589 | $i = $1; |
54d04a52 IZ |
590 | if ($i =~ /\D/) { # subroutine name |
591 | ($file,$i) = ($sub{$i} =~ /^(.*):(.*)$/); | |
592 | $i += 0; | |
593 | if ($i) { | |
594 | $filename = $file; | |
595 | *dbline = "::_<$filename"; | |
596 | $visited{$filename}++; | |
597 | $max = $#dbline; | |
598 | ++$i while $dbline[$i] == 0 && $i < $max; | |
599 | } else { | |
600 | print $OUT "Subroutine $subname not found.\n"; | |
601 | next CMD; | |
602 | } | |
603 | } | |
d338d6fe | 604 | if ($i) { |
605 | if ($dbline[$i] == 0) { | |
606 | print $OUT "Line $i not breakable.\n"; | |
607 | next CMD; | |
608 | } | |
609 | $dbline{$i} =~ s/($|\0)/;9$1/; # add one-time-only b.p. | |
610 | } | |
611 | for ($i=0; $i <= $#stack; ) { | |
612 | $stack[$i++] &= ~1; | |
613 | } | |
614 | last CMD; }; | |
615 | $cmd =~ /^r$/ && do { | |
616 | $stack[$#stack] |= 1; | |
617 | $doret = 1; | |
618 | last CMD; }; | |
54d04a52 IZ |
619 | $cmd =~ /^R$/ && do { |
620 | print $OUT "Warning: a lot of settings and command-line options may be lost!\n"; | |
621 | my (@script, @flags, $cl); | |
622 | push @flags, '-w' if $ini_warn; | |
623 | # Put all the old includes at the start to get | |
624 | # the same debugger. | |
625 | for (@ini_INC) { | |
626 | push @flags, '-I', $_; | |
627 | } | |
628 | # Arrange for setting the old INC: | |
629 | set_list("PERLDB_INC", @ini_INC); | |
630 | if ($0 eq '-e') { | |
631 | for (1..$#{'::_<-e'}) { # The first line is PERL5DB | |
632 | chomp ($cl = $ {'::_<-e'}[$_]); | |
633 | push @script, '-e', $cl; | |
634 | } | |
635 | } else { | |
636 | @script = $0; | |
637 | } | |
638 | set_list("PERLDB_HIST", | |
639 | $term->Features->{getHistory} | |
640 | ? $term->GetHistory : @hist); | |
641 | my @visited = keys %visited; | |
642 | set_list("PERLDB_VISITED", @visited); | |
643 | set_list("PERLDB_OPT", %option); | |
644 | for (0 .. $#visited) { | |
645 | *dbline = "::_<$visited[$_]"; | |
646 | set_list("PERLDB_FILE_$_", %dbline); | |
647 | } | |
648 | $ENV{PERLDB_RESTART} = 1; | |
649 | #print "$^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS"; | |
650 | exec $^X, '-d', @flags, @script, ($emacs ? '-emacs' : ()), @ARGS; | |
651 | print $OUT "exec failed: $!\n"; | |
652 | last CMD; }; | |
d338d6fe | 653 | $cmd =~ /^T$/ && do { |
654 | local($p,$f,$l,$s,$h,$a,$e,$r,@a,@sub); | |
655 | for ($i = 1; | |
656 | ($p,$f,$l,$s,$h,$w,$e,$r) = caller($i); | |
657 | $i++) { | |
658 | @a = (); | |
659 | for $arg (@args) { | |
660 | $_ = "$arg"; | |
661 | s/([\'\\])/\\$1/g; | |
662 | s/([^\0]*)/'$1'/ | |
663 | unless /^(?: -?[\d.]+ | \*[\w:]* )$/x; | |
664 | s/([\200-\377])/sprintf("M-%c",ord($1)&0177)/eg; | |
665 | s/([\0-\37\177])/sprintf("^%c",ord($1)^64)/eg; | |
666 | push(@a, $_); | |
667 | } | |
668 | $w = $w ? '@ = ' : '$ = '; | |
669 | $a = $h ? '(' . join(', ', @a) . ')' : ''; | |
670 | $e =~ s/\n\s*\;\s*\Z// if $e; | |
671 | $e =~ s/[\\\']/\\$1/g if $e; | |
672 | if ($r) { | |
673 | $s = "require '$e'"; | |
674 | } elsif (defined $r) { | |
675 | $s = "eval '$e'"; | |
676 | } elsif ($s eq '(eval)') { | |
677 | $s = "eval {...}"; | |
678 | } | |
679 | $f = "file `$f'" unless $f eq '-e'; | |
680 | push(@sub, "$w$s$a called from $f line $l\n"); | |
681 | last if $signal; | |
682 | } | |
683 | for ($i=0; $i <= $#sub; $i++) { | |
684 | last if $signal; | |
685 | print $OUT $sub[$i]; | |
686 | } | |
687 | next CMD; }; | |
688 | $cmd =~ /^\/(.*)$/ && do { | |
689 | $inpat = $1; | |
690 | $inpat =~ s:([^\\])/$:$1:; | |
691 | if ($inpat ne "") { | |
692 | eval '$inpat =~ m'."\a$inpat\a"; | |
693 | if ($@ ne "") { | |
694 | print $OUT "$@"; | |
695 | next CMD; | |
696 | } | |
697 | $pat = $inpat; | |
698 | } | |
699 | $end = $start; | |
700 | eval ' | |
701 | for (;;) { | |
702 | ++$start; | |
703 | $start = 1 if ($start > $max); | |
704 | last if ($start == $end); | |
705 | if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { | |
706 | if ($emacs) { | |
707 | print $OUT "\032\032$filename:$start:0\n"; | |
708 | } else { | |
709 | print $OUT "$start:\t", $dbline[$start], "\n"; | |
710 | } | |
711 | last; | |
712 | } | |
713 | } '; | |
714 | print $OUT "/$pat/: not found\n" if ($start == $end); | |
715 | next CMD; }; | |
716 | $cmd =~ /^\?(.*)$/ && do { | |
717 | $inpat = $1; | |
718 | $inpat =~ s:([^\\])\?$:$1:; | |
719 | if ($inpat ne "") { | |
720 | eval '$inpat =~ m'."\a$inpat\a"; | |
721 | if ($@ ne "") { | |
722 | print $OUT "$@"; | |
723 | next CMD; | |
724 | } | |
725 | $pat = $inpat; | |
726 | } | |
727 | $end = $start; | |
728 | eval ' | |
729 | for (;;) { | |
730 | --$start; | |
731 | $start = $max if ($start <= 0); | |
732 | last if ($start == $end); | |
733 | if ($dbline[$start] =~ m' . "\a$pat\a" . 'i) { | |
734 | if ($emacs) { | |
735 | print $OUT "\032\032$filename:$start:0\n"; | |
736 | } else { | |
737 | print $OUT "$start:\t", $dbline[$start], "\n"; | |
738 | } | |
739 | last; | |
740 | } | |
741 | } '; | |
742 | print $OUT "?$pat?: not found\n" if ($start == $end); | |
743 | next CMD; }; | |
744 | $cmd =~ /^$rc+\s*(-)?(\d+)?$/ && do { | |
745 | pop(@hist) if length($cmd) > 1; | |
746 | $i = $1 ? ($#hist-($2?$2:1)) : ($2?$2:$#hist); | |
747 | $cmd = $hist[$i] . "\n"; | |
748 | print $OUT $cmd; | |
749 | redo CMD; }; | |
750 | $cmd =~ /^$sh$sh\s*/ && do { | |
751 | &system($'); | |
752 | next CMD; }; | |
753 | $cmd =~ /^$rc([^$rc].*)$/ && do { | |
754 | $pat = "^$1"; | |
755 | pop(@hist) if length($cmd) > 1; | |
756 | for ($i = $#hist; $i; --$i) { | |
757 | last if $hist[$i] =~ /$pat/; | |
758 | } | |
759 | if (!$i) { | |
760 | print $OUT "No such command!\n\n"; | |
761 | next CMD; | |
762 | } | |
763 | $cmd = $hist[$i] . "\n"; | |
764 | print $OUT $cmd; | |
765 | redo CMD; }; | |
766 | $cmd =~ /^$sh$/ && do { | |
767 | &system($ENV{SHELL}||"/bin/sh"); | |
768 | next CMD; }; | |
769 | $cmd =~ /^$sh\s*/ && do { | |
770 | &system($ENV{SHELL}||"/bin/sh","-c",$'); | |
771 | next CMD; }; | |
772 | $cmd =~ /^H\b\s*(-(\d+))?/ && do { | |
773 | $end = $2?($#hist-$2):0; | |
774 | $hist = 0 if $hist < 0; | |
775 | for ($i=$#hist; $i>$end; $i--) { | |
776 | print $OUT "$i: ",$hist[$i],"\n" | |
777 | unless $hist[$i] =~ /^.?$/; | |
778 | }; | |
779 | next CMD; }; | |
780 | $cmd =~ s/^p$/print \$DB::OUT \$_/; | |
781 | $cmd =~ s/^p\b/print \$DB::OUT /; | |
782 | $cmd =~ /^=/ && do { | |
783 | if (local($k,$v) = ($cmd =~ /^=\s*(\S+)\s+(.*)/)) { | |
784 | $alias{$k}="s~$k~$v~"; | |
785 | print $OUT "$k = $v\n"; | |
786 | } elsif ($cmd =~ /^=\s*$/) { | |
787 | foreach $k (sort keys(%alias)) { | |
788 | if (($v = $alias{$k}) =~ s~^s\~$k\~(.*)\~$~$1~) { | |
789 | print $OUT "$k = $v\n"; | |
790 | } else { | |
791 | print $OUT "$k\t$alias{$k}\n"; | |
792 | }; | |
793 | }; | |
794 | }; | |
795 | next CMD; }; | |
796 | $cmd =~ /^\|\|?\s*[^|]/ && do { | |
797 | if ($pager =~ /^\|/) { | |
798 | open(SAVEOUT,">&STDOUT") || &warn("Can't save STDOUT"); | |
799 | open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); | |
800 | } else { | |
801 | open(SAVEOUT,">&OUT") || &warn("Can't save DB::OUT"); | |
802 | } | |
803 | unless ($piped=open(OUT,$pager)) { | |
804 | &warn("Can't pipe output to `$pager'"); | |
805 | if ($pager =~ /^\|/) { | |
806 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); | |
807 | open(STDOUT,">&SAVEOUT") | |
808 | || &warn("Can't restore STDOUT"); | |
809 | close(SAVEOUT); | |
810 | } else { | |
811 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); | |
812 | } | |
813 | next CMD; | |
814 | } | |
815 | $SIG{PIPE}= "DB::catch" if $pager =~ /^\|/ | |
816 | && "" eq $SIG{PIPE} || "DEFAULT" eq $SIG{PIPE}; | |
817 | $selected= select(OUT); | |
818 | $|= 1; | |
819 | select( $selected ), $selected= "" unless $cmd =~ /^\|\|/; | |
820 | $cmd =~ s/^\|+\s*//; | |
821 | redo PIPE; }; | |
822 | # XXX Local variants do not work! | |
823 | $cmd =~ s/^t\s/\$DB::trace = 1;\n/; | |
824 | $cmd =~ s/^s\s/\$DB::single = 1;\n/ && do {$laststep = 's'}; | |
825 | $cmd =~ s/^n\s/\$DB::single = 2;\n/ && do {$laststep = 'n'}; | |
826 | } # PIPE: | |
54d04a52 | 827 | #} # <-- Do we know what this brace is for? |
d338d6fe | 828 | $evalarg = "\$^D = \$^D | \$DB::db_stop;\n$cmd"; &eval; |
829 | if ($onetimeDump) { | |
830 | $onetimeDump = undef; | |
831 | } else { | |
832 | print $OUT "\n"; | |
833 | } | |
834 | } continue { # CMD: | |
835 | if ($piped) { | |
836 | if ($pager =~ /^\|/) { | |
837 | $?= 0; close(OUT) || &warn("Can't close DB::OUT"); | |
838 | &warn( "Pager `$pager' failed: ", | |
839 | ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8), | |
840 | ( $? & 128 ) ? " (core dumped)" : "", | |
841 | ( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?; | |
842 | open(OUT,">&STDOUT") || &warn("Can't restore DB::OUT"); | |
843 | open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); | |
844 | $SIG{PIPE}= "DEFAULT" if $SIG{PIPE} eq "DB::catch"; | |
845 | # Will stop ignoring SIGPIPE if done like nohup(1) | |
846 | # does SIGINT but Perl doesn't give us a choice. | |
847 | } else { | |
848 | open(OUT,">&SAVEOUT") || &warn("Can't restore DB::OUT"); | |
849 | } | |
850 | close(SAVEOUT); | |
851 | select($selected), $selected= "" unless $selected eq ""; | |
852 | $piped= ""; | |
853 | } | |
854 | } # CMD: | |
855 | if ($post) { | |
856 | $evalarg = $post; &eval; | |
857 | } | |
858 | } # if ($single || $signal) | |
859 | ($@, $!, $,, $/, $\, $^W) = @saved; | |
860 | (); | |
861 | } | |
862 | ||
863 | # The following code may be executed now: | |
864 | # BEGIN {warn 4} | |
865 | ||
866 | sub sub { | |
867 | print $LINEINFO ' ' x $#stack, "entering $sub\n" if $frame; | |
868 | push(@stack, $single); | |
869 | $single &= 1; | |
870 | $single |= 4 if $#stack == $deep; | |
871 | if (wantarray) { | |
872 | @ret = &$sub; | |
873 | $single |= pop(@stack); | |
874 | $retctx = "list"; | |
875 | $lastsub = $sub; | |
876 | print $LINEINFO ' ' x $#stack, "exited $sub\n" if $frame; | |
877 | @ret; | |
878 | } else { | |
879 | $ret = &$sub; | |
880 | $single |= pop(@stack); | |
881 | $retctx = "scalar"; | |
882 | $lastsub = $sub; | |
883 | print $LINEINFO ' ' x $#stack, "exited $sub\n" if $frame; | |
884 | $ret; | |
885 | } | |
886 | } | |
887 | ||
888 | sub save { | |
889 | @saved = ($@, $!, $,, $/, $\, $^W); | |
890 | $, = ""; $/ = "\n"; $\ = ""; $^W = 0; | |
891 | } | |
892 | ||
893 | # The following takes its argument via $evalarg to preserve current @_ | |
894 | ||
895 | sub eval { | |
896 | my @res; | |
897 | { | |
898 | local (@stack) = @stack; # guard against recursive debugging | |
899 | my $otrace = $trace; | |
900 | my $osingle = $single; | |
901 | my $od = $^D; | |
902 | @res = eval "$usercontext $evalarg;\n"; # '\n' for nice recursive debug | |
903 | $trace = $otrace; | |
904 | $single = $osingle; | |
905 | $^D = $od; | |
906 | } | |
907 | my $at = $@; | |
908 | eval "&DB::save"; | |
909 | if ($at) { | |
910 | print $OUT $at; | |
911 | } elsif ($onetimeDump) { | |
912 | dumpit(\@res); | |
913 | } | |
914 | } | |
915 | ||
54d04a52 IZ |
916 | sub install_breakpoints { |
917 | my $filename = shift; | |
918 | return unless exists $postponed{$filename}; | |
919 | my %break = %{$postponed{$filename}}; | |
920 | for (keys %break) { | |
921 | my $i = $_; | |
922 | #if (/\D/) { # Subroutine name | |
923 | #} | |
924 | $dbline{$i} = $break{$_}; # Cannot be done before the file is around | |
925 | } | |
926 | } | |
927 | ||
d338d6fe | 928 | sub dumpit { |
929 | local ($savout) = select($OUT); | |
930 | do 'dumpvar.pl' unless defined &main::dumpValue; | |
931 | if (defined &main::dumpValue) { | |
54d04a52 | 932 | local $frame = 0; |
d338d6fe | 933 | &main::dumpValue(shift); |
934 | } else { | |
935 | print $OUT "dumpvar.pl not available.\n"; | |
936 | } | |
937 | select ($savout); | |
938 | } | |
939 | ||
940 | sub action { | |
941 | my $action = shift; | |
942 | while ($action =~ s/\\$//) { | |
943 | #print $OUT "+ "; | |
944 | #$action .= "\n"; | |
945 | $action .= &gets; | |
946 | } | |
947 | $action; | |
948 | } | |
949 | ||
950 | sub gets { | |
951 | local($.); | |
952 | #<IN>; | |
953 | &readline("cont: "); | |
954 | } | |
955 | ||
956 | sub system { | |
957 | # We save, change, then restore STDIN and STDOUT to avoid fork() since | |
958 | # many non-Unix systems can do system() but have problems with fork(). | |
959 | open(SAVEIN,"<&STDIN") || &warn("Can't save STDIN"); | |
960 | open(SAVEOUT,">&OUT") || &warn("Can't save STDOUT"); | |
961 | open(STDIN,"<&IN") || &warn("Can't redirect STDIN"); | |
962 | open(STDOUT,">&OUT") || &warn("Can't redirect STDOUT"); | |
963 | system(@_); | |
964 | open(STDIN,"<&SAVEIN") || &warn("Can't restore STDIN"); | |
965 | open(STDOUT,">&SAVEOUT") || &warn("Can't restore STDOUT"); | |
966 | close(SAVEIN); close(SAVEOUT); | |
967 | &warn( "(Command returned ", ($?>>8) > 128 ? ($?>>8)-256 : ($?>>8), ")", | |
968 | ( $? & 128 ) ? " (core dumped)" : "", | |
969 | ( $? & 127 ) ? " (SIG ".($?&127).")" : "", "\n" ) if $?; | |
970 | $?; | |
971 | } | |
972 | ||
973 | sub setterm { | |
54d04a52 | 974 | local $frame = 0; |
d338d6fe | 975 | eval "require Term::ReadLine;" or die $@; |
976 | if ($notty) { | |
977 | if ($tty) { | |
978 | open(IN,"<$tty") or die "Cannot open TTY `$TTY' for read: $!"; | |
979 | open(OUT,">$tty") or die "Cannot open TTY `$TTY' for write: $!"; | |
980 | $IN = \*IN; | |
981 | $OUT = \*OUT; | |
982 | my $sel = select($OUT); | |
983 | $| = 1; | |
984 | select($sel); | |
985 | } else { | |
986 | eval "require Term::Rendezvous;" or die $@; | |
987 | my $rv = $ENV{PERLDB_NOTTY} || "/tmp/perldbtty$$"; | |
988 | my $term_rv = new Term::Rendezvous $rv; | |
989 | $IN = $term_rv->IN; | |
990 | $OUT = $term_rv->OUT; | |
991 | } | |
992 | } | |
993 | if (!$rl) { | |
994 | $term = new Term::ReadLine::Stub 'perldb', $IN, $OUT; | |
995 | } else { | |
996 | $term = new Term::ReadLine 'perldb', $IN, $OUT; | |
997 | ||
998 | $readline::rl_basic_word_break_characters .= "[:" | |
999 | if defined $readline::rl_basic_word_break_characters | |
1000 | and index($readline::rl_basic_word_break_characters, ":") == -1; | |
1001 | } | |
1002 | $LINEINFO = $OUT unless defined $LINEINFO; | |
1003 | $lineinfo = $console unless defined $lineinfo; | |
1004 | $term->MinLine(2); | |
54d04a52 IZ |
1005 | if ($term->Features->{setHistory} and "@hist" ne "?") { |
1006 | $term->SetHistory(@hist); | |
1007 | } | |
d338d6fe | 1008 | } |
1009 | ||
1010 | sub readline { | |
54d04a52 IZ |
1011 | if (@typeahead) { |
1012 | my $left = @typeahead; | |
1013 | my $got = shift @typeahead; | |
1014 | print $OUT "auto(-$left)", shift, $got, "\n"; | |
1015 | $term->AddHistory($got) | |
1016 | if length($got) > 1 and defined $term->Features->{addHistory}; | |
1017 | return $got; | |
1018 | } | |
d338d6fe | 1019 | local $frame = 0; |
1020 | $term->readline(@_); | |
1021 | } | |
1022 | ||
1023 | sub dump_option { | |
1024 | my ($opt, $val)= @_; | |
1025 | if (defined $optionVars{$opt} | |
1026 | and defined $ {$optionVars{$opt}}) { | |
1027 | $val = $ {$optionVars{$opt}}; | |
1028 | } elsif (defined $optionAction{$opt} | |
1029 | and defined &{$optionAction{$opt}}) { | |
1030 | $val = &{$optionAction{$opt}}(); | |
1031 | } elsif (defined $optionAction{$opt} | |
1032 | and not defined $option{$opt} | |
1033 | or defined $optionVars{$opt} | |
1034 | and not defined $ {$optionVars{$opt}}) { | |
1035 | $val = 'N/A'; | |
1036 | } else { | |
1037 | $val = $option{$opt}; | |
1038 | } | |
1039 | $val =~ s/[\\\']/\\$&/g; | |
1040 | printf $OUT "%20s = '%s'\n", $opt, $val; | |
1041 | } | |
1042 | ||
1043 | sub parse_options { | |
1044 | local($_)= @_; | |
1045 | while ($_ ne "") { | |
1046 | s/^(\w+)(\s*$|\W)// or print($OUT "Invalid option `$_'\n"), last; | |
1047 | my ($opt,$sep) = ($1,$2); | |
1048 | my $val; | |
1049 | if ("?" eq $sep) { | |
1050 | print($OUT "Option query `$opt?' followed by non-space `$_'\n"), last | |
1051 | if /^\S/; | |
1052 | #&dump_option($opt); | |
1053 | } elsif ($sep !~ /\S/) { | |
1054 | $val = "1"; | |
1055 | } elsif ($sep eq "=") { | |
1056 | s/^(\S*)($|\s+)//; | |
1057 | $val = $1; | |
1058 | } else { #{ to "let some poor schmuck bounce on the % key in B<vi>." | |
1059 | my ($end) = "\\" . substr( ")]>}$sep", index("([<{",$sep), 1 ); #} | |
1060 | s/^(([^\\$end]|\\[\\$end])*)$end($|\s+)// or | |
1061 | print($OUT "Unclosed option value `$opt$sep$_'\n"), last; | |
1062 | $val = $1; | |
1063 | $val =~ s/\\([\\$end])/$1/g; | |
1064 | } | |
1065 | my ($option); | |
1066 | my $matches = | |
1067 | grep( /^\Q$opt/ && ($option = $_), @options ); | |
1068 | $matches = grep( /^\Q$opt/i && ($option = $_), @options ) | |
1069 | unless $matches; | |
1070 | print $OUT "Unknown option `$opt'\n" unless $matches; | |
1071 | print $OUT "Ambiguous option `$opt'\n" if $matches > 1; | |
1072 | $option{$option} = $val if $matches == 1 and defined $val; | |
54d04a52 | 1073 | eval "local \$frame = 0; require '$optionRequire{$option}'" |
d338d6fe | 1074 | if $matches == 1 and defined $optionRequire{$option} and defined $val; |
1075 | $ {$optionVars{$option}} = $val | |
1076 | if $matches == 1 | |
1077 | and defined $optionVars{$option} and defined $val; | |
1078 | & {$optionAction{$option}} ($val) | |
1079 | if $matches == 1 | |
1080 | and defined $optionAction{$option} | |
1081 | and defined &{$optionAction{$option}} and defined $val; | |
1082 | &dump_option($option) if $matches == 1 && $OUT ne \*STDERR; # Not $rcfile | |
1083 | s/^\s+//; | |
1084 | } | |
1085 | } | |
1086 | ||
54d04a52 IZ |
1087 | sub set_list { |
1088 | my ($stem,@list) = @_; | |
1089 | my $val; | |
1090 | $ENV{"$ {stem}_n"} = @list; | |
1091 | for $i (0 .. $#list) { | |
1092 | $val = $list[$i]; | |
1093 | $val =~ s/\\/\\\\/g; | |
1094 | $val =~ s/[\0-\37\177\200-\377]/"\\0x" . unpack('H2',$&)/eg; | |
1095 | $ENV{"$ {stem}_$i"} = $val; | |
1096 | } | |
1097 | } | |
1098 | ||
1099 | sub get_list { | |
1100 | my $stem = shift; | |
1101 | my @list; | |
1102 | my $n = delete $ENV{"$ {stem}_n"}; | |
1103 | my $val; | |
1104 | for $i (0 .. $n - 1) { | |
1105 | $val = delete $ENV{"$ {stem}_$i"}; | |
1106 | $val =~ s/\\((\\)|0x(..))/ $2 ? $2 : pack('H2', $3) /ge; | |
1107 | push @list, $val; | |
1108 | } | |
1109 | @list; | |
1110 | } | |
1111 | ||
d338d6fe | 1112 | sub catch { |
1113 | $signal = 1; | |
1114 | } | |
1115 | ||
1116 | sub warn { | |
1117 | my($msg)= join("",@_); | |
1118 | $msg .= ": $!\n" unless $msg =~ /\n$/; | |
1119 | print $OUT $msg; | |
1120 | } | |
1121 | ||
1122 | sub TTY { | |
1123 | if ($term) { | |
1124 | &warn("Too late to set TTY!\n") if @_; | |
1125 | } else { | |
1126 | $tty = shift if @_; | |
1127 | } | |
1128 | $tty or $console; | |
1129 | } | |
1130 | ||
1131 | sub noTTY { | |
1132 | if ($term) { | |
1133 | &warn("Too late to set noTTY!\n") if @_; | |
1134 | } else { | |
1135 | $notty = shift if @_; | |
1136 | } | |
1137 | $notty; | |
1138 | } | |
1139 | ||
1140 | sub ReadLine { | |
1141 | if ($term) { | |
1142 | &warn("Too late to set ReadLine!\n") if @_; | |
1143 | } else { | |
1144 | $rl = shift if @_; | |
1145 | } | |
1146 | $rl; | |
1147 | } | |
1148 | ||
1149 | sub NonStop { | |
1150 | if ($term) { | |
1151 | &warn("Too late to set up NonStop mode!\n") if @_; | |
1152 | } else { | |
1153 | $runnonstop = shift if @_; | |
1154 | } | |
1155 | $runnonstop; | |
1156 | } | |
1157 | ||
1158 | sub pager { | |
1159 | if (@_) { | |
1160 | $pager = shift; | |
1161 | $pager="|".$pager unless $pager =~ /^(\+?\>|\|)/; | |
1162 | } | |
1163 | $pager; | |
1164 | } | |
1165 | ||
1166 | sub shellBang { | |
1167 | if (@_) { | |
1168 | $sh = quotemeta shift; | |
1169 | $sh .= "\\b" if $sh =~ /\w$/; | |
1170 | } | |
1171 | $psh = $sh; | |
1172 | $psh =~ s/\\b$//; | |
1173 | $psh =~ s/\\(.)/$1/g; | |
1174 | &sethelp; | |
1175 | $psh; | |
1176 | } | |
1177 | ||
1178 | sub recallCommand { | |
1179 | if (@_) { | |
1180 | $rc = quotemeta shift; | |
1181 | $rc .= "\\b" if $rc =~ /\w$/; | |
1182 | } | |
1183 | $prc = $rc; | |
1184 | $prc =~ s/\\b$//; | |
1185 | $prc =~ s/\\(.)/$1/g; | |
1186 | &sethelp; | |
1187 | $prc; | |
1188 | } | |
1189 | ||
1190 | sub LineInfo { | |
1191 | return $lineinfo unless @_; | |
1192 | $lineinfo = shift; | |
1193 | my $stream = ($lineinfo =~ /^(\+?\>|\|)/) ? $lineinfo : ">$lineinfo"; | |
1194 | $emacs = ($stream =~ /^\|/); | |
1195 | open(LINEINFO, "$stream") || &warn("Cannot open `$stream' for write"); | |
1196 | $LINEINFO = \*LINEINFO; | |
1197 | my $save = select($LINEINFO); | |
1198 | $| = 1; | |
1199 | select($save); | |
1200 | $lineinfo; | |
1201 | } | |
1202 | ||
1203 | sub sethelp { | |
1204 | $help = " | |
1205 | T Stack trace. | |
1206 | s [expr] Single step [in expr]. | |
1207 | n [expr] Next, steps over subroutine calls [in expr]. | |
1208 | <CR> Repeat last n or s command. | |
1209 | r Return from current subroutine. | |
1210 | c [line] Continue; optionally inserts a one-time-only breakpoint | |
1211 | at the specified line. | |
1212 | l min+incr List incr+1 lines starting at min. | |
1213 | l min-max List lines min through max. | |
1214 | l line List single line. | |
1215 | l subname List first window of lines from subroutine. | |
1216 | l List next window of lines. | |
1217 | - List previous window of lines. | |
1218 | w [line] List window around line. | |
54d04a52 | 1219 | . Return to the executed line. |
d338d6fe | 1220 | f filename Switch to viewing filename. |
1221 | /pattern/ Search forwards for pattern; final / is optional. | |
1222 | ?pattern? Search backwards for pattern; final ? is optional. | |
54d04a52 | 1223 | L List all breakpoints and actions for the current file. |
d338d6fe | 1224 | S [[!]pattern] List subroutine names [not] matching pattern. |
1225 | t Toggle trace mode. | |
1226 | t expr Trace through execution of expr. | |
1227 | b [line] [condition] | |
1228 | Set breakpoint; line defaults to the current execution line; | |
1229 | condition breaks if it evaluates to true, defaults to '1'. | |
1230 | b subname [condition] | |
1231 | Set breakpoint at first line of subroutine. | |
1232 | d [line] Delete the breakpoint for line. | |
1233 | D Delete all breakpoints. | |
1234 | a [line] command | |
1235 | Set an action to be done before the line is executed. | |
1236 | Sequence is: check for breakpoint, print line if necessary, | |
1237 | do action, prompt user if breakpoint or step, evaluate line. | |
1238 | A Delete all actions. | |
1239 | V [pkg [vars]] List some (default all) variables in package (default current). | |
1240 | Use ~pattern and !pattern for positive and negative regexps. | |
1241 | X [vars] Same as \"V currentpackage [vars]\". | |
1242 | x expr Evals expression in array context, dumps the result. | |
1243 | O [opt[=val]] [opt\"val\"] [opt?]... | |
1244 | Set or query values of options. val defaults to 1. opt can | |
1245 | be abbreviated. Several options can be listed. | |
1246 | recallCommand, ShellBang: chars used to recall command or spawn shell; | |
1247 | pager: program for output of \"|cmd\"; | |
1248 | The following options affect what happens with V, X, and x commands: | |
1249 | arrayDepth, hashDepth: print only first N elements ('' for all); | |
1250 | compactDump, veryCompact: change style of array and hash dump; | |
1251 | globPrint: whether to print contents of globs; | |
1252 | DumpDBFiles: dump arrays holding debugged files; | |
1253 | DumpPackages: dump symbol tables of packages; | |
1254 | quote, HighBit, undefPrint: change style of string dump; | |
1255 | tkRunning: run Tk while prompting (with ReadLine); | |
1256 | signalLevel warnLevel dieLevel: level of verbosity; | |
1257 | Option PrintRet affects printing of return value after r command, | |
1258 | frame affects printing messages on entry and exit from subroutines. | |
1259 | During startup options are initialized from \$ENV{PERLDB_OPTS}. | |
1260 | You can put additional initialization options TTY, noTTY, | |
1261 | ReadLine, and NonStop there. | |
1262 | < command Define command to run before each prompt. | |
1263 | > command Define command to run after each prompt. | |
1264 | $prc number Redo a previous command (default previous command). | |
1265 | $prc -number Redo number'th-to-last command. | |
1266 | $prc pattern Redo last command that started with pattern. | |
1267 | See 'O recallCommand' too. | |
1268 | $psh$psh cmd Run cmd in a subprocess (reads from DB::IN, writes to DB::OUT)" | |
1269 | . ( $rc eq $sh ? "" : " | |
1270 | $psh [cmd] Run cmd in subshell (forces \"\$SHELL -c 'cmd'\")." ) . " | |
1271 | See 'O shellBang' too. | |
1272 | H -number Display last number commands (default all). | |
1273 | p expr Same as \"print DB::OUT expr\" in current package. | |
1274 | |dbcmd Run debugger command, piping DB::OUT to current pager. | |
1275 | ||dbcmd Same as |dbcmd but DB::OUT is temporarilly select()ed as well. | |
1276 | \= [alias value] Define a command alias, or list current aliases. | |
1277 | command Execute as a perl statement in current package. | |
54d04a52 IZ |
1278 | R Pure-man-restart of debugger, debugger state and command-line |
1279 | options are lost. | |
d338d6fe | 1280 | h [db_command] Get help [on a specific debugger command], enter |h to page. |
1281 | h h Summary of debugger commands. | |
1282 | q or ^D Quit. | |
1283 | ||
1284 | "; | |
1285 | $summary = <<"END_SUM"; | |
1286 | List/search source lines: Control script execution: | |
1287 | l [ln|sub] List source code T Stack trace | |
54d04a52 | 1288 | - or . List previous/current line s [expr] Single step [in expr] |
d338d6fe | 1289 | w [line] List around line n [expr] Next, steps over subs |
1290 | f filename View source in file <CR> Repeat last n or s | |
1291 | /pattern/ Search forward r Return from subroutine | |
1292 | ?pattern? Search backward c [line] Continue until line | |
1293 | Debugger controls: L List break pts & actions | |
1294 | O [...] Set debugger options t [expr] Toggle trace [trace expr] | |
1295 | < command Command for before prompt b [ln] [c] Set breakpoint | |
1296 | > command Command for after prompt b sub [c] Set breakpoint for sub | |
1297 | $prc [N|pat] Redo a previous command d [line] Delete a breakpoint | |
1298 | H [-num] Display last num commands D Delete all breakpoints | |
1299 | = [a val] Define/list an alias a [ln] cmd Do cmd before line | |
1300 | h [db_cmd] Get help on command A Delete all actions | |
1301 | |[|]dbcmd Send output to pager $psh\[$psh\] syscmd Run cmd in a subprocess | |
54d04a52 | 1302 | q or ^D Quit R Attempt a restart |
d338d6fe | 1303 | Data Examination: expr Execute perl code, also see: s,n,t expr |
1304 | S [[!]pat] List subroutine names [not] matching pattern | |
1305 | V [Pk [Vars]] List Variables in Package. Vars can be ~pattern or !pattern. | |
1306 | X [Vars] Same as \"V current_package [Vars]\". | |
1307 | x expr Evals expression in array context, dumps the result. | |
1308 | p expr Print expression (uses script's current package). | |
1309 | END_SUM | |
1310 | # '); # Fix balance of Emacs parsing | |
1311 | } | |
1312 | ||
d338d6fe | 1313 | sub diesignal { |
54d04a52 | 1314 | local $frame = 0; |
d338d6fe | 1315 | $SIG{'ABRT'} = DEFAULT; |
1316 | kill 'ABRT', $$ if $panic++; | |
1317 | print $DB::OUT "Got $_[0]!\n"; # in the case cannot continue | |
1318 | local $SIG{__WARN__} = ''; | |
1319 | require Carp; | |
1320 | local $Carp::CarpLevel = 2; # mydie + confess | |
1321 | &warn(Carp::longmess("Signal @_")); | |
1322 | kill 'ABRT', $$; | |
1323 | } | |
1324 | ||
1325 | sub dbwarn { | |
54d04a52 | 1326 | local $frame = 0; |
d338d6fe | 1327 | local $SIG{__WARN__} = ''; |
1328 | require Carp; | |
1329 | #&warn("Entering dbwarn\n"); | |
1330 | my ($mysingle,$mytrace) = ($single,$trace); | |
1331 | $single = 0; $trace = 0; | |
1332 | my $mess = Carp::longmess(@_); | |
1333 | ($single,$trace) = ($mysingle,$mytrace); | |
1334 | #&warn("Warning in dbwarn\n"); | |
1335 | &warn($mess); | |
1336 | #&warn("Exiting dbwarn\n"); | |
1337 | } | |
1338 | ||
1339 | sub dbdie { | |
54d04a52 | 1340 | local $frame = 0; |
d338d6fe | 1341 | local $SIG{__DIE__} = ''; |
1342 | local $SIG{__WARN__} = ''; | |
1343 | my $i = 0; my $ineval = 0; my $sub; | |
1344 | #&warn("Entering dbdie\n"); | |
1345 | if ($dieLevel != 2) { | |
1346 | while ((undef,undef,undef,$sub) = caller(++$i)) { | |
1347 | $ineval = 1, last if $sub eq '(eval)'; | |
1348 | } | |
1349 | { | |
1350 | local $SIG{__WARN__} = \&dbwarn; | |
1351 | &warn(@_) if $dieLevel > 2; # Ineval is false during destruction? | |
1352 | } | |
1353 | #&warn("dieing quietly in dbdie\n") if $ineval and $dieLevel < 2; | |
1354 | die @_ if $ineval and $dieLevel < 2; | |
1355 | } | |
1356 | require Carp; | |
1357 | # We do not want to debug this chunk (automatic disabling works | |
1358 | # inside DB::DB, but not in Carp). | |
1359 | my ($mysingle,$mytrace) = ($single,$trace); | |
1360 | $single = 0; $trace = 0; | |
1361 | my $mess = Carp::longmess(@_); | |
1362 | ($single,$trace) = ($mysingle,$mytrace); | |
1363 | #&warn("dieing loudly in dbdie\n"); | |
1364 | die $mess; | |
1365 | } | |
1366 | ||
d338d6fe | 1367 | sub warnLevel { |
1368 | if (@_) { | |
1369 | $prevwarn = $SIG{__WARN__} unless $warnLevel; | |
1370 | $warnLevel = shift; | |
1371 | if ($warnLevel) { | |
1372 | $SIG{__WARN__} = 'DB::dbwarn'; | |
1373 | } else { | |
1374 | $SIG{__WARN__} = $prevwarn; | |
1375 | } | |
1376 | } | |
1377 | $warnLevel; | |
1378 | } | |
1379 | ||
1380 | sub dieLevel { | |
1381 | if (@_) { | |
1382 | $prevdie = $SIG{__DIE__} unless $dieLevel; | |
1383 | $dieLevel = shift; | |
1384 | if ($dieLevel) { | |
1385 | $SIG{__DIE__} = 'DB::dbdie'; # if $dieLevel < 2; | |
1386 | #$SIG{__DIE__} = 'DB::diehard' if $dieLevel >= 2; | |
1387 | print $OUT "Stack dump during die enabled", | |
1388 | ( $dieLevel == 1 ? " outside of evals" : ""), ".\n"; | |
1389 | print $OUT "Dump printed too.\n" if $dieLevel > 2; | |
1390 | } else { | |
1391 | $SIG{__DIE__} = $prevdie; | |
1392 | print $OUT "Default die handler restored.\n"; | |
1393 | } | |
1394 | } | |
1395 | $dieLevel; | |
1396 | } | |
1397 | ||
1398 | sub signalLevel { | |
1399 | if (@_) { | |
1400 | $prevsegv = $SIG{SEGV} unless $signalLevel; | |
1401 | $prevbus = $SIG{BUS} unless $signalLevel; | |
1402 | $signalLevel = shift; | |
1403 | if ($signalLevel) { | |
1404 | $SIG{SEGV} = 'DB::diesignal'; | |
1405 | $SIG{BUS} = 'DB::diesignal'; | |
1406 | } else { | |
1407 | $SIG{SEGV} = $prevsegv; | |
1408 | $SIG{BUS} = $prevbus; | |
1409 | } | |
1410 | } | |
1411 | $signalLevel; | |
1412 | } | |
1413 | ||
1414 | # The following BEGIN is very handy if debugger goes havoc, debugging debugger? | |
1415 | ||
1416 | BEGIN { # This does not compile, alas. | |
1417 | $IN = \*STDIN; # For bugs before DB::OUT has been opened | |
1418 | $OUT = \*STDERR; # For errors before DB::OUT has been opened | |
1419 | $sh = '!'; | |
1420 | $rc = ','; | |
1421 | @hist = ('?'); | |
1422 | $deep = 100; # warning if stack gets this deep | |
1423 | $window = 10; | |
1424 | $preview = 3; | |
1425 | $sub = ''; | |
1426 | #$SIG{__WARN__} = "DB::dbwarn"; | |
1427 | #$SIG{__DIE__} = 'DB::dbdie'; | |
1428 | #$SIG{SEGV} = "DB::diesignal"; | |
1429 | #$SIG{BUS} = "DB::diesignal"; | |
1430 | $SIG{INT} = "DB::catch"; | |
1431 | #$SIG{FPE} = "DB::catch"; | |
1432 | #warn "SIGFPE installed"; | |
1433 | $warnLevel = 1 unless defined $warnLevel; | |
1434 | $dieLevel = 1 unless defined $dieLevel; | |
1435 | $signalLevel = 1 unless defined $signalLevel; | |
1436 | ||
1437 | $db_stop = 0; # Compiler warning | |
1438 | $db_stop = 1 << 30; | |
1439 | $level = 0; # Level of recursive debugging | |
1440 | } | |
1441 | ||
54d04a52 IZ |
1442 | BEGIN {$^W = $ini_warn;} # Switch warnings back |
1443 | ||
d338d6fe | 1444 | #use Carp; # This did break, left for debuggin |
1445 | ||
1446 | 1; |