print OUT <<"!GROK!THIS!";
$Config{startperl}
eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}'
- if \$running_under_some_shell;
+ if 0;
+
+use warnings;
+use strict;
+
+# make sure creat()s are neither too much nor too little
+INIT { eval { umask(0077) } } # doubtless someone has no mask
+
+(my \$pager = <<'/../') =~ s/\\s*\\z//;
+$Config{pager}
+/../
+my \@pagers = ();
+push \@pagers, \$pager if -x \$pager;
+
+(my \$bindir = <<'/../') =~ s/\\s*\\z//;
+$Config{scriptdir}
+/../
-\@pagers = ();
-push \@pagers, "$Config{'pager'}" if -x "$Config{'pager'}";
!GROK!THIS!
# In the following, perl variables are not expanded during extraction.
print OUT <<'!NO!SUBS!';
+use Fcntl; # for sysopen
+use Getopt::Std;
+use Config '%Config';
+use File::Spec::Functions qw(catfile splitdir);
+
#
# Perldoc revision #1 -- look up a piece of documentation in .pod format that
# is embedded in the perl installation tree.
#
-# This is not to be confused with Tom Christianson's perlman, which is a
+# This is not to be confused with Tom Christiansen's perlman, which is a
# man replacement, written in perl. This perldoc is strictly for reading
# the perl manuals, though it too is written in perl.
+#
+# Massive security and correctness patches applied to this
+# noisome program by Tom Christiansen Sat Mar 11 15:22:33 MST 2000
-if(@ARGV<1) {
- $me = $0; # Editing $0 is unportable
+if (@ARGV<1) {
+ my $me = $0; # Editing $0 is unportable
$me =~ s,.*/,,;
die <<EOF;
-Usage: $me [-h] [-r] [-i] [-v] [-t] [-u] [-m] [-l] [-F] [-X] PageName|ModuleName|ProgramName
+Usage: $me [-h] [-r] [-i] [-v] [-t] [-u] [-m] [-n program] [-l] [-F] [-X] PageName|ModuleName|ProgramName
$me -f PerlFunc
$me -q FAQKeywords
The -h option prints more help. Also try "perldoc perldoc" to get
-aquainted with the system.
+acquainted with the system.
EOF
}
-use Getopt::Std;
-use Config '%Config';
-
-@global_found = ();
-$global_target = "";
+my @global_found = ();
+my $global_target = "";
-$Is_VMS = $^O eq 'VMS';
-$Is_MSWin32 = $^O eq 'MSWin32';
-$Is_Dos = $^O eq 'dos';
+my $Is_VMS = $^O eq 'VMS';
+my $Is_MSWin32 = $^O eq 'MSWin32';
+my $Is_Dos = $^O eq 'dos';
+my $Is_OS2 = $^O eq 'os2';
sub usage{
warn "@_\n" if @_;
Options:
-h Display this help message
-r Recursive search (slow)
- -i Ignore case
+ -i Ignore case
-t Display pod using pod2text instead of pod2man and nroff
(-t is the default on win32)
-u Display unformatted pod text
-m Display module's file in its entirety
+ -n Specify replacement for nroff
-l Display the module's file name
-F Arguments are file names, not modules
-v Verbosely describe what's going on
-X use index if present (looks for pod.idx at $Config{archlib})
-
+ -q Search the text of questions (not answers) in perlfaq[1-9]
+ -U Run in insecure mode (superuser only)
PageName|ModuleName...
- is the name of a piece of documentation that you want to look at. You
+ is the name of a piece of documentation that you want to look at. You
may either give a descriptive name of the page (as in the case of
- `perlfunc') the name of a module, either like `Term::Info',
- `Term/Info', the partial name of a module, like `info', or
+ `perlfunc') the name of a module, either like `Term::Info',
+ `Term/Info', the partial name of a module, like `info', or
`makemaker', or the name of a program, like `perldoc'.
BuiltinFunction
is a regex. Will search perlfaq[1-9] for and extract any
questions that match.
-Any switches in the PERLDOC environment variable will be used before the
+Any switches in the PERLDOC environment variable will be used before the
command line arguments. The optional pod index file contains a list of
filenames, one per line.
EOF
}
-use Text::ParseWords;
+if (defined $ENV{"PERLDOC"}) {
+ require Text::ParseWords;
+ unshift(@ARGV, Text::ParseWords::shellwords($ENV{"PERLDOC"}));
+}
+!NO!SUBS!
+
+my $getopts = "mhtluvriFf:Xq:n:U";
+print OUT <<"!GET!OPTS!";
+use vars qw( @{[map "\$opt_$_", ($getopts =~ /\w/g)]} );
-unshift(@ARGV,shellwords($ENV{"PERLDOC"}));
+getopts("$getopts") || usage;
+!GET!OPTS!
-getopts("mhtluvriFf:Xq:") || usage;
+print OUT <<'!NO!SUBS!';
-usage if $opt_h || $opt_h; # avoid -w warning
+usage if $opt_h;
+
+# refuse to run if we should be tainting and aren't
+# (but regular users deserve protection too, though!)
+if (!($Is_VMS || $Is_MSWin32 || $Is_Dos || $Is_OS2) && ($> == 0 || $< == 0)
+ && !am_taint_checking())
+{{
+ if ($opt_U) {
+ my $id = eval { getpwnam("nobody") };
+ $id = eval { getpwnam("nouser") } unless defined $id;
+ $id = -2 unless defined $id;
+ eval {
+ $> = $id; # must do this one first!
+ $< = $id;
+ };
+ last if !$@ && $< && $>;
+ }
+ die "Superuser must not run $0 without security audit and taint checks.\n";
+}}
-$podidx = "$Config{'archlib'}/pod.idx";
-$podidx = "" if $opt_X || !-f "pod.idx" && !-r _ && -M _ > 7;
+$opt_n = "nroff" if !$opt_n;
-if ($opt_t + $opt_u + $opt_m + $opt_l > 1) {
+my $podidx;
+if ($opt_X) {
+ $podidx = "$Config{'archlib'}/pod.idx";
+ $podidx = "" unless -f $podidx && -r _ && -M _ <= 7;
+}
+
+if ((my $opts = do{ no warnings; $opt_t + $opt_u + $opt_m + $opt_l }) > 1) {
usage("only one of -t, -u, -m or -l")
-} elsif ($Is_MSWin32 || $Is_Dos) {
- $opt_t = 1 unless $opt_t + $opt_u + $opt_m + $opt_l;
+}
+elsif ($Is_MSWin32
+ || $Is_Dos
+ || !($ENV{TERM} && $ENV{TERM} !~ /dumb|emacs|none|unknown/i))
+{
+ $opt_t = 1 unless $opts;
}
if ($opt_t) { require Pod::Text; import Pod::Text; }
+my @pages;
if ($opt_f) {
- @pages = ("perlfunc");
-} elsif ($opt_q) {
- @pages = ("perlfaq1" .. "perlfaq9");
-} else {
- @pages = @ARGV;
+ @pages = ("perlfunc");
+}
+elsif ($opt_q) {
+ @pages = ("perlfaq1" .. "perlfaq9");
+}
+else {
+ @pages = @ARGV;
}
# Does this look like a module or extension directory?
if (-f "Makefile.PL") {
- # Add ., lib and blib/* libs to @INC (if they exist)
- unshift(@INC, '.');
- unshift(@INC, 'lib') if -d 'lib';
- require ExtUtils::testlib;
-}
+ # Add ., lib to @INC (if they exist)
+ eval q{ use lib qw(. lib); 1; } or die;
+ # don't add if superuser
+ if ($< && $> && -f "blib") { # don't be looking too hard now!
+ eval q{ use blib; 1 };
+ warn $@ if $@ && $opt_v;
+ }
+}
sub containspod {
my($file, $readit) = @_;
- return 1 if !$readit && $file =~ /\.pod$/i;
+ return 1 if !$readit && $file =~ /\.pod\z/i;
local($_);
- open(TEST,"<$file");
- while(<TEST>) {
- if(/^=head/) {
- close(TEST);
+ open(TEST,"<", $file) or die "Can't open $file: $!";
+ while (<TEST>) {
+ if (/^=head/) {
+ close(TEST) or die "Can't close $file: $!";
return 1;
}
}
- close(TEST);
+ close(TEST) or die "Can't close $file: $!";
return 0;
}
sub minus_f_nocase {
my($dir,$file) = @_;
- my $path = join('/',$dir,$file);
+ my $path = catfile($dir,$file);
return $path if -f $path and -r _;
if (!$opt_i or $Is_VMS or $Is_MSWin32 or $Is_Dos or $^O eq 'os2') {
- # on a case-forgiving file system or if case is important
+ # on a case-forgiving file system or if case is important
# that is it all we can do
- warn "Ignored $file: unreadable\n" if -f _;
+ warn "Ignored $path: unreadable\n" if -f _;
return '';
}
local *DIR;
+ # this is completely wicked. don't mess with $", and if
+ # you do, don't assume / is the dirsep!
local($")="/";
my @p = ($dir);
my($p,$cip);
- foreach $p (split(/\//, $file)){
- my $try = "@p/$p";
+ foreach $p (splitdir $file){
+ my $try = catfile @p, $p;
stat $try;
- if (-d _){
+ if (-d _) {
push @p, $p;
if ( $p eq $global_target) {
- $tmp_path = join ('/', @p);
+ my $tmp_path = catfile @p;
my $path_f = 0;
for (@global_found) {
$path_f = 1 if $_ eq $tmp_path;
push (@global_found, $tmp_path) unless $path_f;
print STDERR "Found as @p but directory\n" if $opt_v;
}
- } elsif (-f _ && -r _) {
+ }
+ elsif (-f _ && -r _) {
return $try;
- } elsif (-f _) {
+ }
+ elsif (-f _) {
warn "Ignored $try: unreadable\n";
- } else {
+ }
+ elsif (-d "@p") {
my $found=0;
my $lcp = lc $p;
- opendir DIR, "@p";
+ opendir DIR, "@p" or die "opendir @p: $!";
while ($cip=readdir(DIR)) {
if (lc $cip eq $lcp){
$found++;
last;
}
}
- closedir DIR;
+ closedir DIR or die "closedir @p: $!";
return "" unless $found;
push @p, $cip;
return "@p" if -f "@p" and -r _;
- warn "Ignored $file: unreadable\n" if -f _;
+ warn "Ignored @p: unreadable\n" if -f _;
}
}
return "";
}
-
+
sub check_file {
my($dir,$file) = @_;
+ return "" if length $dir and not -d $dir;
if ($opt_m) {
return minus_f_nocase($dir,$file);
- } else {
+ }
+ else {
my $path = minus_f_nocase($dir,$file);
return $path if length $path and containspod($path);
}
my $ret;
my $i;
my $dir;
- $global_target = (split('/', $s))[-1];
+ $global_target = (splitdir $s)[-1]; # XXX: why not use File::Basename?
for ($i=0; $i<@dirs; $i++) {
$dir = $dirs[$i];
- ($dir = VMS::Filespec::unixpath($dir)) =~ s!/$!! if $Is_VMS;
+ ($dir = VMS::Filespec::unixpath($dir)) =~ s!/\z!! if $Is_VMS;
if ( ( $ret = check_file $dir,"$s.pod")
or ( $ret = check_file $dir,"$s.pm")
or ( $ret = check_file $dir,$s)
or ( $Is_VMS and
$ret = check_file $dir,"$s.com")
- or ( $^O eq 'os2' and
+ or ( $^O eq 'os2' and
$ret = check_file $dir,"$s.cmd")
or ( ($Is_MSWin32 or $Is_Dos or $^O eq 'os2') and
$ret = check_file $dir,"$s.bat")
or ( $ret = check_file "$dir/pod","$s.pod")
or ( $ret = check_file "$dir/pod",$s)
+ or ( $ret = check_file "$dir/pods","$s.pod")
+ or ( $ret = check_file "$dir/pods",$s)
) {
return $ret;
}
-
+
if ($recurse) {
- opendir(D,$dir);
- my @newdirs = map "$dir/$_", grep {
- not /^\.\.?$/ and
- not /^auto$/ and # save time! don't search auto dirs
- -d "$dir/$_"
+ opendir(D,$dir) or die "Can't opendir $dir: $!";
+ my @newdirs = map catfile($dir, $_), grep {
+ not /^\.\.?\z/s and
+ not /^auto\z/s and # save time! don't search auto dirs
+ -d catfile($dir, $_)
} readdir D;
- closedir(D);
+ closedir(D) or die "Can't closedir $dir: $!";
next unless @newdirs;
- @newdirs = map((s/.dir$//,$_)[1],@newdirs) if $Is_VMS;
+ # what a wicked map!
+ @newdirs = map((s/\.dir\z//,$_)[1],@newdirs) if $Is_VMS;
print STDERR "Also looking in @newdirs\n" if $opt_v;
push(@dirs,@newdirs);
}
return ();
}
+sub filter_nroff {
+ my @data = split /\n{2,}/, shift;
+ shift @data while @data and $data[0] !~ /\S/; # Go to header
+ shift @data if @data and $data[0] =~ /Contributed\s+Perl/; # Skip header
+ pop @data if @data and $data[-1] =~ /^\w/; # Skip footer, like
+ # 28/Jan/99 perl 5.005, patch 53 1
+ join "\n\n", @data;
+}
+
+sub page {
+ my ($tmp, $no_tty, @pagers) = @_;
+ if ($no_tty) {
+ open(TMP,"<", $tmp) or die "Can't open $tmp: $!";
+ local $_;
+ while (<TMP>) {
+ print or die "Can't print to stdout: $!";
+ }
+ close TMP or die "Can't close while $tmp: $!";
+ }
+ else {
+ # On VMS, quoting prevents logical expansion, and temp files with no
+ # extension get the wrong default extension (such as .LIS for TYPE)
+
+ $tmp = VMS::Filespec::rmsexpand($tmp, '.') if ($Is_VMS);
+ foreach my $pager (@pagers) {
+ if ($Is_VMS) {
+ last if system("$pager $tmp") == 0;
+ } else {
+ last if system("$pager \"$tmp\"") == 0;
+ }
+ }
+ }
+}
+my @found;
foreach (@pages) {
- if ($podidx && open(PODIDX, $podidx)) {
- my $searchfor = $_;
- local($_);
- $searchfor =~ s,::,/,g;
- print STDERR "Searching for '$searchfor' in $podidx\n" if $opt_v;
- while (<PODIDX>) {
- chomp;
- push(@found, $_) if m,/$searchfor(?:\.(?:pod|pm))?$,i;
- }
- close(PODIDX);
- next;
- }
- print STDERR "Searching for $_\n" if $opt_v;
- # We must look both in @INC for library modules and in PATH
- # for executables, like h2xs or perldoc itself.
- @searchdirs = @INC;
- if ($opt_F) {
- next unless -r;
- push @found, $_ if $opt_m or containspod($_);
- next;
+ if ($podidx && open(PODIDX, $podidx)) {
+ my $searchfor = catfile split '::';
+ print STDERR "Searching for '$searchfor' in $podidx\n" if $opt_v;
+ local $_;
+ while (<PODIDX>) {
+ chomp;
+ push(@found, $_) if m,/$searchfor(?:\.(?:pod|pm))?\z,i;
}
- unless ($opt_m) {
- if ($Is_VMS) {
- my($i,$trn);
- for ($i = 0; $trn = $ENV{'DCL$PATH'.$i}; $i++) {
- push(@searchdirs,$trn);
- }
- push(@dirs,'perl_root:[lib.pod]') # installed pods
- } else {
- push(@searchdirs, grep(-d, split($Config{path_sep},
- $ENV{'PATH'})));
+ close(PODIDX) or die "Can't close $podidx: $!";
+ next;
+ }
+ print STDERR "Searching for $_\n" if $opt_v;
+ if ($opt_F) {
+ next unless -r;
+ push @found, $_ if $opt_m or containspod($_);
+ next;
+ }
+ # We must look both in @INC for library modules and in $bindir
+ # for executables, like h2xs or perldoc itself.
+ my @searchdirs = ($bindir, @INC);
+ unless ($opt_m) {
+ if ($Is_VMS) {
+ my($i,$trn);
+ for ($i = 0; $trn = $ENV{'DCL$PATH;'.$i}; $i++) {
+ push(@searchdirs,$trn);
}
- @files= searchfor(0,$_,@searchdirs);
+ push(@searchdirs,'perl_root:[lib.pod]') # installed pods
+ }
+ else {
+ push(@searchdirs, grep(-d, split($Config{path_sep},
+ $ENV{'PATH'})));
+ }
+ }
+ my @files = searchfor(0,$_,@searchdirs);
+ if (@files) {
+ print STDERR "Found as @files\n" if $opt_v;
+ }
+ else {
+ # no match, try recursive search
+ @searchdirs = grep(!/^\.\z/s,@INC);
+ @files= searchfor(1,$_,@searchdirs) if $opt_r;
+ if (@files) {
+ print STDERR "Loosely found as @files\n" if $opt_v;
}
- if( @files ) {
- print STDERR "Found as @files\n" if $opt_v;
- } else {
- # no match, try recursive search
-
- @searchdirs = grep(!/^\.$/,@INC);
-
- @files= searchfor(1,$_,@searchdirs) if $opt_r;
- if( @files ) {
- print STDERR "Loosely found as @files\n" if $opt_v;
- } else {
- print STDERR "No documentation found for \"$_\".\n";
- if (@global_found) {
- print STDERR "However, try\n";
- my $dir = $file = "";
- for $dir (@global_found) {
- opendir(DIR, $dir) or die "$!";
- while ($file = readdir(DIR)) {
- next if ($file =~ /^\./);
- $file =~ s/\.(pm|pod)$//;
- print STDERR "\tperldoc $_\::$file\n";
- }
- closedir DIR;
- }
- }
+ else {
+ print STDERR "No documentation found for \"$_\".\n";
+ if (@global_found) {
+ print STDERR "However, try\n";
+ for my $dir (@global_found) {
+ opendir(DIR, $dir) or die "opendir $dir: $!";
+ while (my $file = readdir(DIR)) {
+ next if ($file =~ /^\./s);
+ $file =~ s/\.(pm|pod)\z//; # XXX: badfs
+ print STDERR "\tperldoc $_\::$file\n";
+ }
+ closedir DIR or die "closedir $dir: $!";
}
+ }
}
- push(@found,@files);
+ }
+ push(@found,@files);
}
-if(!@found) {
- exit ($Is_VMS ? 98962 : 1);
+if (!@found) {
+ exit ($Is_VMS ? 98962 : 1);
}
if ($opt_l) {
exit;
}
-if( ! -t STDOUT ) { $no_tty = 1 }
+my $lines = $ENV{LINES} || 24;
+
+my $no_tty;
+if (! -t STDOUT) { $no_tty = 1 }
+END { close(STDOUT) || die "Can't close STDOUT: $!" }
if ($Is_MSWin32) {
- $tmp = "$ENV{TEMP}\\perldoc1.$$";
- push @pagers, qw( more< less notepad );
- unshift @pagers, $ENV{PAGER} if $ENV{PAGER};
-} elsif ($Is_VMS) {
- $tmp = 'Sys$Scratch:perldoc.tmp1_'.$$;
- push @pagers, qw( most more less type/page );
-} elsif ($Is_Dos) {
- $tmp = "$ENV{TEMP}/perldoc1.$$";
- $tmp =~ tr!\\/!//!s;
- push @pagers, qw( less.exe more.com< );
- unshift @pagers, $ENV{PAGER} if $ENV{PAGER};
-} else {
- if ($^O eq 'os2') {
- require POSIX;
- $tmp = POSIX::tmpnam();
- unshift @pagers, 'less', 'cmd /c more <';
- } else {
- $tmp = "/tmp/perldoc1.$$";
- }
- push @pagers, qw( more less pg view cat );
- unshift @pagers, $ENV{PAGER} if $ENV{PAGER};
+ push @pagers, qw( more< less notepad );
+ unshift @pagers, $ENV{PAGER} if $ENV{PAGER};
+ for (@found) { s,/,\\,g }
+}
+elsif ($Is_VMS) {
+ push @pagers, qw( most more less type/page );
+}
+elsif ($Is_Dos) {
+ push @pagers, qw( less.exe more.com< );
+ unshift @pagers, $ENV{PAGER} if $ENV{PAGER};
+}
+else {
+ if ($^O eq 'os2') {
+ unshift @pagers, 'less', 'cmd /c more <';
+ }
+ push @pagers, qw( more less pg view cat );
+ unshift @pagers, $ENV{PAGER} if $ENV{PAGER};
}
unshift @pagers, $ENV{PERLDOC_PAGER} if $ENV{PERLDOC_PAGER};
if ($opt_m) {
- foreach $pager (@pagers) {
- system("$pager @found") or exit;
- }
- if ($Is_VMS) { eval 'use vmsish qw(status exit); exit $?' }
- exit 1;
-}
+ foreach my $pager (@pagers) {
+ if (system($pager, @found) == 0) {
+ exit;
+ }
+ }
+ if ($Is_VMS) {
+ eval q{
+ use vmsish qw(status exit);
+ exit $?;
+ 1;
+ } or die;
+ }
+ exit(1);
+}
+my @pod;
if ($opt_f) {
- my $perlfunc = shift @found;
- open(PFUNC, $perlfunc) or die "Can't open $perlfunc: $!";
-
- # Skip introduction
- while (<PFUNC>) {
- last if /^=head2 Alphabetical Listing of Perl Functions/;
- }
-
- # Look for our function
- my $found = 0;
- my @pod;
- while (<PFUNC>) {
- if (/^=item\s+\Q$opt_f\E\b/o) {
- $found = 1;
- } elsif (/^=item/) {
- last if $found > 1;
- }
- next unless $found;
- push @pod, $_;
- ++$found if /^\w/; # found descriptive text
- }
- if (@pod) {
- my $lines = $ENV{LINES} || 24;
-
- if ($opt_t) {
- open(FORMATTER, "| pod2text") || die "Can't start filter";
- print FORMATTER "=over 8\n\n";
- print FORMATTER @pod;
- print FORMATTER "=back\n";
- close(FORMATTER);
- } elsif (@pod < $lines-2) {
- print @pod;
- } else {
- foreach $pager (@pagers) {
- open (PAGER, "| $pager") or next;
- print PAGER @pod ;
- close(PAGER) or next;
- last;
- }
- }
- } else {
- die "No documentation for perl function `$opt_f' found\n";
- }
- exit;
+ my $perlfunc = shift @found;
+ open(PFUNC, "<", $perlfunc)
+ or die("Can't open $perlfunc: $!");
+
+ # Functions like -r, -e, etc. are listed under `-X'.
+ my $search_string = ($opt_f =~ /^-[rwxoRWXOeszfdlpSbctugkTBMAC]$/)
+ ? 'I<-X' : $opt_f ;
+
+ # Skip introduction
+ local $_;
+ while (<PFUNC>) {
+ last if /^=head2 Alphabetical Listing of Perl Functions/;
+ }
+
+ # Look for our function
+ my $found = 0;
+ my $inlist = 0;
+ while (<PFUNC>) {
+ if (/^=item\s+\Q$search_string\E\b/o) {
+ $found = 1;
+ }
+ elsif (/^=item/) {
+ last if $found > 1 and not $inlist;
+ }
+ next unless $found;
+ if (/^=over/) {
+ ++$inlist;
+ }
+ elsif (/^=back/) {
+ --$inlist;
+ }
+ push @pod, $_;
+ ++$found if /^\w/; # found descriptive text
+ }
+ if (!@pod) {
+ die "No documentation for perl function `$opt_f' found\n";
+ }
+ close PFUNC or die "Can't open $perlfunc: $!";
}
if ($opt_q) {
- local @ARGV = @found; # I'm lazy, sue me.
- my $found = 0;
- my %found_in;
- my @pod;
-
- while (<>) {
- if (/^=head2\s+.*$opt_q/oi) {
- $found = 1;
- push @pod, "=head1 Found in $ARGV\n\n" unless $found_in{$ARGV}++;
- } elsif (/^=head2/) {
- $found = 0;
- }
- next unless $found;
- push @pod, $_;
- }
-
- if (@pod) {
- if ($opt_t) {
- open(FORMATTER, "| pod2text") || die "Can't start filter";
- print FORMATTER "=over 8\n\n";
- print FORMATTER @pod;
- print FORMATTER "=back\n";
- close(FORMATTER);
- } else {
- print @pod;
- }
- } else {
- die "No documentation for perl function `$opt_f' found\n";
- }
- exit;
+ local @ARGV = @found; # I'm lazy, sue me.
+ my $found = 0;
+ my %found_in;
+ my $rx = eval { qr/$opt_q/ } or die <<EOD;
+Invalid regular expression '$opt_q' given as -q pattern:
+ $@
+Did you mean \\Q$opt_q ?
+
+EOD
+
+ for (@found) { die "invalid file spec: $!" if /[<>|]/ }
+ local $_;
+ while (<>) {
+ if (/^=head2\s+.*(?:$opt_q)/oi) {
+ $found = 1;
+ push @pod, "=head1 Found in $ARGV\n\n" unless $found_in{$ARGV}++;
+ }
+ elsif (/^=head2/) {
+ $found = 0;
+ }
+ next unless $found;
+ push @pod, $_;
+ }
+ if (!@pod) {
+ die("No documentation for perl FAQ keyword `$opt_q' found\n");
+ }
+}
+
+require File::Temp;
+
+my ($tmpfd, $tmp) = File::Temp::tempfile(UNLINK => 1);
+
+my $filter;
+
+if (@pod) {
+ my ($buffd, $buffer) = File::Temp::tempfile(UNLINK => 1);
+ print $buffd "=over 8\n\n";
+ print $buffd @pod or die "Can't print $buffer: $!";
+ print $buffd "=back\n";
+ close $buffd or die "Can't close $buffer: $!";
+ @found = $buffer;
+ $filter = 1;
}
foreach (@found) {
+ my $file = $_;
+ my $err;
- if($opt_t) {
- open(TMP,">>$tmp");
- Pod::Text::pod2text($_,*TMP);
- close(TMP);
- } elsif(not $opt_u) {
- my $cmd = "pod2man --lax $_ | nroff -man";
- $cmd .= " | col -x" if $^O =~ /hpux/;
- $rslt = `$cmd`;
- unless(($err = $?)) {
- open(TMP,">>$tmp");
- print TMP $rslt;
- close TMP;
- }
+ if ($opt_t) {
+ Pod::Text->new()->parse_from_file($file, $tmpfd);
+ }
+ elsif (not $opt_u) {
+ my $cmd = catfile($bindir, 'pod2man') . " --lax $file | $opt_n -man";
+ $cmd .= " | col -x" if $^O =~ /hpux/;
+ my $rslt = `$cmd`;
+ $rslt = filter_nroff($rslt) if $filter;
+ unless (($err = $?)) {
+ print $tmpfd $rslt
+ or die "Can't print $tmp: $!";
}
-
- if( $opt_u or $err or -z $tmp) {
- open(OUT,">>$tmp");
- open(IN,"<$_");
- $cut = 1;
- while (<IN>) {
- $cut = $1 eq 'cut' if /^=(\w+)/;
- next if $cut;
- print OUT;
- }
- close(IN);
- close(OUT);
+ }
+ if ($opt_u or $err) {
+ open(IN,"<", $file) or die("Can't open $file: $!");
+ my $cut = 1;
+ local $_;
+ while (<IN>) {
+ $cut = $1 eq 'cut' if /^=(\w+)/;
+ next if $cut;
+ print $tmpfd $_
+ or die "Can't print $tmp: $!";
}
+ close IN or die "Can't close $file: $!";
+ }
}
-
-if( $no_tty ) {
- open(TMP,"<$tmp");
- print while <TMP>;
- close(TMP);
-} else {
- foreach $pager (@pagers) {
- system("$pager $tmp") or last;
- }
+close $tmpfd
+ or die "Can't close $tmp: $!";
+page($tmp, $no_tty, @pagers);
+
+exit;
+
+sub is_tainted {
+ my $arg = shift;
+ my $nada = substr($arg, 0, 0); # zero-length
+ local $@; # preserve caller's version
+ eval { eval "# $nada" };
+ return length($@) != 0;
}
-1 while unlink($tmp); #Possibly pointless VMSism
+sub am_taint_checking {
+ my($k,$v) = each %ENV;
+ return is_tainted($v);
+}
-exit 0;
__END__
command line in the file C<$Config{archlib}/pod.idx>. The pod.idx file should
contain fully qualified filenames, one per line.
+=item B<-U> run insecurely
+
+Because B<perldoc> does not run properly tainted, and is known to
+have security issues, it will not normally execute as the superuser.
+If you use the B<-U> flag, it will do so, but only after setting
+the effective and real IDs to nobody's or nouser's account, or -2
+if unavailable. If it cannot relinguish its privileges, it will not
+run.
+
=item B<PageName|ModuleName|ProgramName>
The item you want to look up. Nested modules (such as C<File::Basename>)
are specified either as C<File::Basename> or C<File/Basename>. You may also
-give a descriptive name of a page, such as C<perlfunc>. You make also give a
+give a descriptive name of a page, such as C<perlfunc>. You may also give a
partial or wrong-case name, such as "basename" for "File::Basename", but
this will be slower, if there is more then one page with the same partial
name, you will only get the first one.
=head1 ENVIRONMENT
-Any switches in the C<PERLDOC> environment variable will be used before the
+Any switches in the C<PERLDOC> environment variable will be used before the
command line arguments. C<perldoc> also searches directories
specified by the C<PERL5LIB> (or C<PERLLIB> if C<PERL5LIB> is not
defined) and C<PATH> environment variables.
C<PAGER> before trying to find a pager on its own. (C<MANPAGER> is not
used if C<perldoc> was told to display plain text or unformatted pod.)
+One useful value for C<PERLDOC_PAGER> is C<less -+C -E>.
+
+=head1 VERSION
+
+This is perldoc v2.03.
+
=head1 AUTHOR
Kenneth Albanowski <kjahds@kjahds.com>
-Minor updates by Andy Dougherty <doughera@lafcol.lafayette.edu>
+Minor updates by Andy Dougherty <doughera@lafcol.lafayette.edu>,
+and others.
=cut
#
+# Version 2.03: Sun Apr 23 16:56:34 BST 2000
+# Hugo van der Sanden <hv@crypt0.demon.co.uk>
+# don't die when 'use blib' fails
+# Version 2.02: Mon Mar 13 18:03:04 MST 2000
+# Tom Christiansen <tchrist@perl.com>
+# Added -U insecurity option
+# Version 2.01: Sat Mar 11 15:22:33 MST 2000
+# Tom Christiansen <tchrist@perl.com>, querulously.
+# Security and correctness patches.
+# What a twisted bit of distasteful spaghetti code.
+# Version 2.0: ????
+# Version 1.15: Tue Aug 24 01:50:20 EST 1999
+# Charles Wilson <cwilson@ece.gatech.edu>
+# changed /pod/ directory to /pods/ for cygwin
+# to support cygwin/win32
+# Version 1.14: Wed Jul 15 01:50:20 EST 1998
+# Robin Barker <rmb1@cise.npl.co.uk>
+# -strict, -w cleanups
# Version 1.13: Fri Feb 27 16:20:50 EST 1997
-# Gurusamy Sarathy <gsar@umich.edu>
+# Gurusamy Sarathy <gsar@activestate.com>
# -doc tweaks for -F and -X options
# Version 1.12: Sat Apr 12 22:41:09 EST 1997
-# Gurusamy Sarathy <gsar@umich.edu>
+# Gurusamy Sarathy <gsar@activestate.com>
# -various fixes for win32
# Version 1.11: Tue Dec 26 09:54:33 EST 1995
# Kenneth Albanowski <kjahds@kjahds.com>
# -added Charles Bailey's further VMS patches, and -u switch
# -added -t switch, with pod2text support
-#
+#
# Version 1.10: Thu Nov 9 07:23:47 EST 1995
# Kenneth Albanowski <kjahds@kjahds.com>
# -added VMS support
https://perl5.git.perl.org / perl5.git / blobdiff