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4633a7c4 |
1 | #!/usr/local/bin/perl |
2 | |
3 | use Config; |
4 | use File::Basename qw(&basename &dirname); |
8a5546a1 |
5 | use Cwd; |
4633a7c4 |
6 | |
85880f03 |
7 | # List explicitly here the variables you want Configure to |
8 | # generate. Metaconfig only looks for shell variables, so you |
9 | # have to mention them as if they were shell variables, not |
10 | # %Config entries. Thus you write |
4633a7c4 |
11 | # $startperl |
85880f03 |
12 | # to ensure Configure will look for $Config{startperl}. |
4633a7c4 |
13 | |
14 | # This forces PL files to create target in same directory as PL file. |
15 | # This is so that make depend always knows where to find PL derivatives. |
8a5546a1 |
16 | $origdir = cwd; |
44a8e56a |
17 | chdir dirname($0); |
18 | $file = basename($0, '.PL'); |
774d564b |
19 | $file .= '.com' if $^O eq 'VMS'; |
4633a7c4 |
20 | |
21 | open OUT,">$file" or die "Can't create $file: $!"; |
22 | |
23 | print "Extracting $file (with variable substitutions)\n"; |
24 | |
25 | # In this section, perl variables will be expanded during extraction. |
26 | # You can use $Config{...} to use Configure variables. |
27 | |
85880f03 |
28 | print OUT <<"!GROK!THIS!"; |
5f05dabc |
29 | $Config{startperl} |
30 | eval 'exec $Config{perlpath} -S \$0 \${1+"\$@"}' |
c5ae3962 |
31 | if 0; |
55497cff |
32 | |
c5ae3962 |
33 | use strict; |
34 | my \@pagers = (); |
55497cff |
35 | push \@pagers, "$Config{'pager'}" if -x "$Config{'pager'}"; |
4633a7c4 |
36 | !GROK!THIS! |
37 | |
38 | # In the following, perl variables are not expanded during extraction. |
39 | |
40 | print OUT <<'!NO!SUBS!'; |
41 | |
42 | # |
43 | # Perldoc revision #1 -- look up a piece of documentation in .pod format that |
44 | # is embedded in the perl installation tree. |
45 | # |
46 | # This is not to be confused with Tom Christianson's perlman, which is a |
47 | # man replacement, written in perl. This perldoc is strictly for reading |
48 | # the perl manuals, though it too is written in perl. |
4633a7c4 |
49 | |
febd60db |
50 | if (@ARGV<1) { |
c5ae3962 |
51 | my $me = $0; # Editing $0 is unportable |
fb73857a |
52 | $me =~ s,.*/,,; |
4633a7c4 |
53 | die <<EOF; |
5315ba28 |
54 | Usage: $me [-h] [-r] [-i] [-v] [-t] [-u] [-m] [-l] [-F] [-X] PageName|ModuleName|ProgramName |
0b166b66 |
55 | $me -f PerlFunc |
a3cb178b |
56 | $me -q FAQKeywords |
4633a7c4 |
57 | |
89b8affa |
58 | The -h option prints more help. Also try "perldoc perldoc" to get |
59 | aquainted with the system. |
4633a7c4 |
60 | EOF |
61 | } |
62 | |
63 | use Getopt::Std; |
59586d77 |
64 | use Config '%Config'; |
65 | |
c5ae3962 |
66 | my @global_found = (); |
67 | my $global_target = ""; |
fb73857a |
68 | |
c5ae3962 |
69 | my $Is_VMS = $^O eq 'VMS'; |
70 | my $Is_MSWin32 = $^O eq 'MSWin32'; |
71 | my $Is_Dos = $^O eq 'dos'; |
4633a7c4 |
72 | |
73 | sub usage{ |
ff0cee69 |
74 | warn "@_\n" if @_; |
75 | # Erase evidence of previous errors (if any), so exit status is simple. |
76 | $! = 0; |
4633a7c4 |
77 | die <<EOF; |
31bdbec1 |
78 | perldoc [options] PageName|ModuleName|ProgramName... |
79 | perldoc [options] -f BuiltinFunction |
a3cb178b |
80 | perldoc [options] -q FAQRegex |
31bdbec1 |
81 | |
82 | Options: |
137443ea |
83 | -h Display this help message |
5315ba28 |
84 | -r Recursive search (slow) |
febd60db |
85 | -i Ignore case |
137443ea |
86 | -t Display pod using pod2text instead of pod2man and nroff |
87 | (-t is the default on win32) |
85880f03 |
88 | -u Display unformatted pod text |
a3cb178b |
89 | -m Display module's file in its entirety |
90 | -l Display the module's file name |
cce34969 |
91 | -F Arguments are file names, not modules |
137443ea |
92 | -v Verbosely describe what's going on |
89b8affa |
93 | -X use index if present (looks for pod.idx at $Config{archlib}) |
54ac30b1 |
94 | -q Search the text of questions (not answers) in perlfaq[1-9] |
a3cb178b |
95 | |
4633a7c4 |
96 | PageName|ModuleName... |
febd60db |
97 | is the name of a piece of documentation that you want to look at. You |
4633a7c4 |
98 | may either give a descriptive name of the page (as in the case of |
febd60db |
99 | `perlfunc') the name of a module, either like `Term::Info', |
100 | `Term/Info', the partial name of a module, like `info', or |
4633a7c4 |
101 | `makemaker', or the name of a program, like `perldoc'. |
31bdbec1 |
102 | |
103 | BuiltinFunction |
104 | is the name of a perl function. Will extract documentation from |
105 | `perlfunc'. |
a3cb178b |
106 | |
107 | FAQRegex |
108 | is a regex. Will search perlfaq[1-9] for and extract any |
109 | questions that match. |
110 | |
febd60db |
111 | Any switches in the PERLDOC environment variable will be used before the |
89b8affa |
112 | command line arguments. The optional pod index file contains a list of |
113 | filenames, one per line. |
4633a7c4 |
114 | |
115 | EOF |
116 | } |
117 | |
febd60db |
118 | if (defined $ENV{"PERLDOC"}) { |
c5ae3962 |
119 | require Text::ParseWords; |
120 | unshift(@ARGV, Text::ParseWords::shellwords($ENV{"PERLDOC"})); |
121 | } |
122 | !NO!SUBS! |
123 | |
124 | my $getopts = "mhtluvriFf:Xq:"; |
125 | print OUT <<"!GET!OPTS!"; |
4633a7c4 |
126 | |
c5ae3962 |
127 | use vars qw( @{[map "\$opt_$_", ($getopts =~ /\w/g)]} ); |
4633a7c4 |
128 | |
c5ae3962 |
129 | getopts("$getopts") || usage; |
130 | !GET!OPTS! |
4633a7c4 |
131 | |
c5ae3962 |
132 | print OUT <<'!NO!SUBS!'; |
85880f03 |
133 | |
c5ae3962 |
134 | usage if $opt_h; |
4633a7c4 |
135 | |
c5ae3962 |
136 | my $podidx; |
febd60db |
137 | if ($opt_X) { |
0d3da1c8 |
138 | $podidx = "$Config{'archlib'}/pod.idx"; |
139 | $podidx = "" unless -f $podidx && -r _ && -M _ <= 7; |
140 | } |
89b8affa |
141 | |
febd60db |
142 | if ((my $opts = do{ local $^W; $opt_t + $opt_u + $opt_m + $opt_l }) > 1) { |
137443ea |
143 | usage("only one of -t, -u, -m or -l") |
febd60db |
144 | } |
d49321e7 |
145 | elsif ($Is_MSWin32 |
146 | || $Is_Dos |
147 | || !(exists $ENV{TERM} && $ENV{TERM} !~ /dumb|emacs|none|unknown/i)) |
148 | { |
c5ae3962 |
149 | $opt_t = 1 unless $opts |
137443ea |
150 | } |
4633a7c4 |
151 | |
7eda7aea |
152 | if ($opt_t) { require Pod::Text; import Pod::Text; } |
4633a7c4 |
153 | |
c5ae3962 |
154 | my @pages; |
31bdbec1 |
155 | if ($opt_f) { |
febd60db |
156 | @pages = ("perlfunc"); |
157 | } |
158 | elsif ($opt_q) { |
159 | @pages = ("perlfaq1" .. "perlfaq9"); |
160 | } |
161 | else { |
162 | @pages = @ARGV; |
31bdbec1 |
163 | } |
164 | |
fb73857a |
165 | # Does this look like a module or extension directory? |
166 | if (-f "Makefile.PL") { |
167 | # Add ., lib and blib/* libs to @INC (if they exist) |
168 | unshift(@INC, '.'); |
169 | unshift(@INC, 'lib') if -d 'lib'; |
170 | require ExtUtils::testlib; |
171 | } |
172 | |
4633a7c4 |
173 | sub containspod { |
fb73857a |
174 | my($file, $readit) = @_; |
175 | return 1 if !$readit && $file =~ /\.pod$/i; |
176 | local($_); |
177 | open(TEST,"<$file"); |
febd60db |
178 | while (<TEST>) { |
179 | if (/^=head/) { |
fb73857a |
180 | close(TEST); |
181 | return 1; |
4633a7c4 |
182 | } |
fb73857a |
183 | } |
184 | close(TEST); |
185 | return 0; |
4633a7c4 |
186 | } |
187 | |
84902520 |
188 | sub minus_f_nocase { |
5315ba28 |
189 | my($dir,$file) = @_; |
190 | my $path = join('/',$dir,$file); |
191 | return $path if -f $path and -r _; |
192 | if (!$opt_i or $Is_VMS or $Is_MSWin32 or $Is_Dos or $^O eq 'os2') { |
febd60db |
193 | # on a case-forgiving file system or if case is important |
5315ba28 |
194 | # that is it all we can do |
0cf744f2 |
195 | warn "Ignored $path: unreadable\n" if -f _; |
fb73857a |
196 | return ''; |
84902520 |
197 | } |
4633a7c4 |
198 | local *DIR; |
199 | local($")="/"; |
5315ba28 |
200 | my @p = ($dir); |
201 | my($p,$cip); |
4633a7c4 |
202 | foreach $p (split(/\//, $file)){ |
fb73857a |
203 | my $try = "@p/$p"; |
204 | stat $try; |
febd60db |
205 | if (-d _) { |
4633a7c4 |
206 | push @p, $p; |
fb73857a |
207 | if ( $p eq $global_target) { |
c5ae3962 |
208 | my $tmp_path = join ('/', @p); |
fb73857a |
209 | my $path_f = 0; |
210 | for (@global_found) { |
211 | $path_f = 1 if $_ eq $tmp_path; |
212 | } |
213 | push (@global_found, $tmp_path) unless $path_f; |
214 | print STDERR "Found as @p but directory\n" if $opt_v; |
215 | } |
febd60db |
216 | } |
217 | elsif (-f _ && -r _) { |
fb73857a |
218 | return $try; |
febd60db |
219 | } |
220 | elsif (-f _) { |
fb73857a |
221 | warn "Ignored $try: unreadable\n"; |
febd60db |
222 | } |
223 | else { |
4633a7c4 |
224 | my $found=0; |
225 | my $lcp = lc $p; |
226 | opendir DIR, "@p"; |
227 | while ($cip=readdir(DIR)) { |
228 | if (lc $cip eq $lcp){ |
229 | $found++; |
230 | last; |
231 | } |
232 | } |
233 | closedir DIR; |
234 | return "" unless $found; |
235 | push @p, $cip; |
fb73857a |
236 | return "@p" if -f "@p" and -r _; |
0cf744f2 |
237 | warn "Ignored @p: unreadable\n" if -f _; |
4633a7c4 |
238 | } |
239 | } |
5315ba28 |
240 | return ""; |
fb73857a |
241 | } |
eb459f90 |
242 | |
fb73857a |
243 | |
244 | sub check_file { |
5315ba28 |
245 | my($dir,$file) = @_; |
3046dd9f |
246 | if ($opt_m) { |
5315ba28 |
247 | return minus_f_nocase($dir,$file); |
febd60db |
248 | } |
249 | else { |
5315ba28 |
250 | my $path = minus_f_nocase($dir,$file); |
249edfdf |
251 | return $path if length $path and containspod($path); |
3046dd9f |
252 | } |
5315ba28 |
253 | return ""; |
fb73857a |
254 | } |
255 | |
256 | |
257 | sub searchfor { |
258 | my($recurse,$s,@dirs) = @_; |
259 | $s =~ s!::!/!g; |
260 | $s = VMS::Filespec::unixify($s) if $Is_VMS; |
261 | return $s if -f $s && containspod($s); |
262 | printf STDERR "Looking for $s in @dirs\n" if $opt_v; |
263 | my $ret; |
264 | my $i; |
265 | my $dir; |
266 | $global_target = (split('/', $s))[-1]; |
267 | for ($i=0; $i<@dirs; $i++) { |
268 | $dir = $dirs[$i]; |
269 | ($dir = VMS::Filespec::unixpath($dir)) =~ s!/$!! if $Is_VMS; |
5315ba28 |
270 | if ( ( $ret = check_file $dir,"$s.pod") |
271 | or ( $ret = check_file $dir,"$s.pm") |
272 | or ( $ret = check_file $dir,$s) |
fb73857a |
273 | or ( $Is_VMS and |
5315ba28 |
274 | $ret = check_file $dir,"$s.com") |
febd60db |
275 | or ( $^O eq 'os2' and |
5315ba28 |
276 | $ret = check_file $dir,"$s.cmd") |
0151c6ef |
277 | or ( ($Is_MSWin32 or $Is_Dos or $^O eq 'os2') and |
5315ba28 |
278 | $ret = check_file $dir,"$s.bat") |
279 | or ( $ret = check_file "$dir/pod","$s.pod") |
280 | or ( $ret = check_file "$dir/pod",$s) |
fb73857a |
281 | ) { |
282 | return $ret; |
283 | } |
eb459f90 |
284 | |
fb73857a |
285 | if ($recurse) { |
286 | opendir(D,$dir); |
287 | my @newdirs = map "$dir/$_", grep { |
288 | not /^\.\.?$/ and |
289 | not /^auto$/ and # save time! don't search auto dirs |
290 | -d "$dir/$_" |
291 | } readdir D; |
292 | closedir(D); |
293 | next unless @newdirs; |
294 | @newdirs = map((s/.dir$//,$_)[1],@newdirs) if $Is_VMS; |
295 | print STDERR "Also looking in @newdirs\n" if $opt_v; |
296 | push(@dirs,@newdirs); |
297 | } |
298 | } |
299 | return (); |
300 | } |
4633a7c4 |
301 | |
eb459f90 |
302 | sub filter_nroff { |
303 | my @data = split /\n{2,}/, shift; |
304 | shift @data while @data and $data[0] !~ /\S/; # Go to header |
305 | shift @data if @data and $data[0] =~ /Contributed\s+Perl/; # Skip header |
306 | pop @data if @data and $data[-1] =~ /^\w/; # Skip footer, like |
307 | # 28/Jan/99 perl 5.005, patch 53 1 |
308 | join "\n\n", @data; |
309 | } |
310 | |
febd60db |
311 | sub printout { |
312 | my ($file, $tmp, $filter) = @_; |
313 | my $err; |
314 | |
315 | if ($opt_t) { |
316 | open(TMP,">>$tmp") |
317 | or warn("Can't open $tmp: $!"), return; |
318 | Pod::Text::pod2text($file,*TMP); |
319 | close TMP; |
320 | } |
321 | elsif (not $opt_u) { |
322 | my $cmd = "pod2man --lax $file | nroff -man"; |
323 | $cmd .= " | col -x" if $^O =~ /hpux/; |
324 | my $rslt = `$cmd`; |
325 | $rslt = filter_nroff($rslt) if $filter; |
326 | unless (($err = $?)) { |
327 | open(TMP,">>$tmp") or warn("Can't open $tmp: $!"), return; |
328 | print TMP $rslt; |
329 | close TMP; |
330 | } |
331 | } |
332 | if ($opt_u or $err or -z $tmp) { |
333 | open(OUT,">>$tmp") or warn("Can't open $tmp: $!"), return; |
334 | open(IN,"<$file") or warn("Can't open $file: $!"), return; |
335 | my $cut = 1; |
336 | while (<IN>) { |
337 | $cut = $1 eq 'cut' if /^=(\w+)/; |
338 | next if $cut; |
339 | print OUT; |
340 | } |
341 | close IN; |
342 | close OUT; |
343 | } |
344 | } |
345 | |
346 | sub page { |
347 | my ($tmp, $no_tty, @pagers) = @_; |
348 | if ($no_tty) { |
349 | open(TMP,"<$tmp") or warn("Can't open $tmp: $!"), return; |
350 | print while <TMP>; |
351 | close TMP; |
352 | } |
353 | else { |
354 | foreach my $pager (@pagers) { |
355 | system("$pager $tmp") or last; |
356 | } |
357 | } |
358 | } |
359 | |
360 | sub cleanup { |
361 | my @files = @_; |
362 | for (@files) { |
363 | 1 while unlink($_); #Possibly pointless VMSism |
364 | } |
365 | } |
366 | |
367 | sub safe_exit { |
368 | my ($val, @files) = @_; |
369 | cleanup(@files); |
370 | exit $val; |
371 | } |
372 | |
373 | sub safe_die { |
374 | my ($msg, @files) = @_; |
375 | cleanup(@files); |
376 | die $msg; |
377 | } |
378 | |
c5ae3962 |
379 | my @found; |
4633a7c4 |
380 | foreach (@pages) { |
febd60db |
381 | if ($podidx && open(PODIDX, $podidx)) { |
382 | my $searchfor = $_; |
383 | local($_); |
384 | $searchfor =~ s,::,/,g; |
385 | print STDERR "Searching for '$searchfor' in $podidx\n" if $opt_v; |
386 | while (<PODIDX>) { |
387 | chomp; |
388 | push(@found, $_) if m,/$searchfor(?:\.(?:pod|pm))?$,i; |
cce34969 |
389 | } |
febd60db |
390 | close(PODIDX); |
391 | next; |
392 | } |
393 | print STDERR "Searching for $_\n" if $opt_v; |
394 | # We must look both in @INC for library modules and in PATH |
395 | # for executables, like h2xs or perldoc itself. |
396 | my @searchdirs = @INC; |
397 | if ($opt_F) { |
398 | next unless -r; |
399 | push @found, $_ if $opt_m or containspod($_); |
400 | next; |
401 | } |
402 | unless ($opt_m) { |
403 | if ($Is_VMS) { |
404 | my($i,$trn); |
405 | for ($i = 0; $trn = $ENV{'DCL$PATH;'.$i}; $i++) { |
406 | push(@searchdirs,$trn); |
7eda7aea |
407 | } |
febd60db |
408 | push(@searchdirs,'perl_root:[lib.pod]') # installed pods |
409 | } |
410 | else { |
411 | push(@searchdirs, grep(-d, split($Config{path_sep}, |
412 | $ENV{'PATH'}))); |
85880f03 |
413 | } |
febd60db |
414 | } |
415 | my @files = searchfor(0,$_,@searchdirs); |
416 | if (@files) { |
417 | print STDERR "Found as @files\n" if $opt_v; |
418 | } |
419 | else { |
420 | # no match, try recursive search |
421 | @searchdirs = grep(!/^\.$/,@INC); |
422 | @files= searchfor(1,$_,@searchdirs) if $opt_r; |
423 | if (@files) { |
424 | print STDERR "Loosely found as @files\n" if $opt_v; |
425 | } |
426 | else { |
427 | print STDERR "No documentation found for \"$_\".\n"; |
428 | if (@global_found) { |
429 | print STDERR "However, try\n"; |
430 | for my $dir (@global_found) { |
431 | opendir(DIR, $dir) or die "$!"; |
432 | while (my $file = readdir(DIR)) { |
433 | next if ($file =~ /^\./); |
434 | $file =~ s/\.(pm|pod)$//; |
435 | print STDERR "\tperldoc $_\::$file\n"; |
436 | } |
437 | closedir DIR; |
4633a7c4 |
438 | } |
febd60db |
439 | } |
4633a7c4 |
440 | } |
febd60db |
441 | } |
442 | push(@found,@files); |
4633a7c4 |
443 | } |
444 | |
febd60db |
445 | if (!@found) { |
446 | exit ($Is_VMS ? 98962 : 1); |
4633a7c4 |
447 | } |
448 | |
44a8e56a |
449 | if ($opt_l) { |
450 | print join("\n", @found), "\n"; |
451 | exit; |
452 | } |
453 | |
877622ba |
454 | my $lines = $ENV{LINES} || 24; |
455 | |
c5ae3962 |
456 | my $no_tty; |
febd60db |
457 | if (! -t STDOUT) { $no_tty = 1 } |
458 | |
459 | # until here we could simply exit or die |
460 | # now we create temporary files that we have to clean up |
461 | # namely $tmp, $buffer |
4633a7c4 |
462 | |
c5ae3962 |
463 | my $tmp; |
febd60db |
464 | my $buffer; |
137443ea |
465 | if ($Is_MSWin32) { |
febd60db |
466 | $tmp = "$ENV{TEMP}\\perldoc1.$$"; |
467 | $buffer = "$ENV{TEMP}\\perldoc1.b$$"; |
468 | push @pagers, qw( more< less notepad ); |
469 | unshift @pagers, $ENV{PAGER} if $ENV{PAGER}; |
470 | for (@found) { s,/,\\,g } |
471 | } |
472 | elsif ($Is_VMS) { |
473 | $tmp = 'Sys$Scratch:perldoc.tmp1_'.$$; |
474 | $buffer = 'Sys$Scratch:perldoc.tmp1_b'.$$; |
475 | push @pagers, qw( most more less type/page ); |
476 | } |
477 | elsif ($Is_Dos) { |
478 | $tmp = "$ENV{TEMP}/perldoc1.$$"; |
479 | $buffer = "$ENV{TEMP}/perldoc1.b$$"; |
480 | $tmp =~ tr!\\/!//!s; |
481 | $buffer =~ tr!\\/!//!s; |
482 | push @pagers, qw( less.exe more.com< ); |
483 | unshift @pagers, $ENV{PAGER} if $ENV{PAGER}; |
484 | } |
485 | else { |
486 | if ($^O eq 'os2') { |
487 | require POSIX; |
488 | $tmp = POSIX::tmpnam(); |
489 | $buffer = POSIX::tmpnam(); |
490 | unshift @pagers, 'less', 'cmd /c more <'; |
491 | } |
492 | else { |
493 | $tmp = "/tmp/perldoc1.$$"; |
494 | $buffer = "/tmp/perldoc1.b$$"; |
495 | } |
496 | push @pagers, qw( more less pg view cat ); |
497 | unshift @pagers, $ENV{PAGER} if $ENV{PAGER}; |
4633a7c4 |
498 | } |
44a8e56a |
499 | unshift @pagers, $ENV{PERLDOC_PAGER} if $ENV{PERLDOC_PAGER}; |
4633a7c4 |
500 | |
febd60db |
501 | # all exit calls from here on have to be safe_exit calls (see above) |
502 | # and all die calls safe_die calls to guarantee removal of files and |
503 | # dir as needed |
504 | |
7eda7aea |
505 | if ($opt_m) { |
febd60db |
506 | foreach my $pager (@pagers) { |
507 | system("$pager @found") or safe_exit(0, $tmp, $buffer); |
508 | } |
509 | if ($Is_VMS) { eval 'use vmsish qw(status exit); exit $?' } |
510 | # I don't get the line above. Please patch yourself as needed. |
511 | safe_exit(1, $tmp, $buffer); |
eb459f90 |
512 | } |
7eda7aea |
513 | |
eb459f90 |
514 | my @pod; |
31bdbec1 |
515 | if ($opt_f) { |
febd60db |
516 | my $perlfunc = shift @found; |
517 | open(PFUNC, $perlfunc) |
518 | or safe_die("Can't open $perlfunc: $!", $tmp, $buffer); |
31bdbec1 |
519 | |
febd60db |
520 | # Functions like -r, -e, etc. are listed under `-X'. |
521 | my $search_string = ($opt_f =~ /^-[rwxoRWXOeszfdlpSbctugkTBMAC]$/) |
522 | ? 'I<-X' : $opt_f ; |
a3cb178b |
523 | |
febd60db |
524 | # Skip introduction |
525 | while (<PFUNC>) { |
526 | last if /^=head2 Alphabetical Listing of Perl Functions/; |
527 | } |
7eda7aea |
528 | |
febd60db |
529 | # Look for our function |
530 | my $found = 0; |
531 | my $inlist = 0; |
532 | while (<PFUNC>) { |
533 | if (/^=item\s+\Q$search_string\E\b/o) { |
534 | $found = 1; |
85880f03 |
535 | } |
febd60db |
536 | elsif (/^=item/) { |
537 | last if $found > 1 and not $inlist; |
538 | } |
539 | next unless $found; |
540 | if (/^=over/) { |
541 | ++$inlist; |
542 | } |
543 | elsif (/^=back/) { |
544 | --$inlist; |
4633a7c4 |
545 | } |
febd60db |
546 | push @pod, $_; |
547 | ++$found if /^\w/; # found descriptive text |
548 | } |
549 | if (!@pod) { |
550 | die "No documentation for perl function `$opt_f' found\n"; |
551 | } |
4633a7c4 |
552 | } |
553 | |
febd60db |
554 | if ($opt_q) { |
555 | local @ARGV = @found; # I'm lazy, sue me. |
556 | my $found = 0; |
557 | my %found_in; |
558 | |
559 | while (<>) { |
560 | if (/^=head2\s+.*(?:$opt_q)/oi) { |
561 | $found = 1; |
562 | push @pod, "=head1 Found in $ARGV\n\n" unless $found_in{$ARGV}++; |
4633a7c4 |
563 | } |
febd60db |
564 | elsif (/^=head2/) { |
565 | $found = 0; |
566 | } |
567 | next unless $found; |
568 | push @pod, $_; |
569 | } |
570 | if (!@pod) { |
571 | safe_die("No documentation for perl FAQ keyword `$opt_q' found\n", |
572 | $tmp, $buffer); |
573 | } |
574 | } |
575 | |
576 | my $filter; |
577 | |
578 | if (@pod) { |
579 | open(TMP,">$buffer") or safe_die("Can't open '$buffer': $!", $tmp, $buffer); |
580 | print TMP "=over 8\n\n"; |
581 | print TMP @pod; |
582 | print TMP "=back\n"; |
583 | close TMP; |
584 | @found = $buffer; |
585 | $filter = 1; |
4633a7c4 |
586 | } |
587 | |
febd60db |
588 | foreach (@found) { |
589 | printout($_, $tmp, $filter); |
eb459f90 |
590 | } |
febd60db |
591 | page($tmp, $no_tty, @pagers); |
4633a7c4 |
592 | |
febd60db |
593 | safe_exit(0, $tmp, $buffer); |
7eda7aea |
594 | |
595 | __END__ |
596 | |
597 | =head1 NAME |
598 | |
599 | perldoc - Look up Perl documentation in pod format. |
600 | |
601 | =head1 SYNOPSIS |
602 | |
89b8affa |
603 | B<perldoc> [B<-h>] [B<-v>] [B<-t>] [B<-u>] [B<-m>] [B<-l>] [B<-F>] [B<-X>] PageName|ModuleName|ProgramName |
7eda7aea |
604 | |
31bdbec1 |
605 | B<perldoc> B<-f> BuiltinFunction |
606 | |
c8950503 |
607 | B<perldoc> B<-q> FAQ Keyword |
608 | |
7eda7aea |
609 | =head1 DESCRIPTION |
610 | |
40fc7247 |
611 | I<perldoc> looks up a piece of documentation in .pod format that is embedded |
612 | in the perl installation tree or in a perl script, and displays it via |
613 | C<pod2man | nroff -man | $PAGER>. (In addition, if running under HP-UX, |
614 | C<col -x> will be used.) This is primarily used for the documentation for |
615 | the perl library modules. |
7eda7aea |
616 | |
617 | Your system may also have man pages installed for those modules, in |
618 | which case you can probably just use the man(1) command. |
619 | |
620 | =head1 OPTIONS |
621 | |
622 | =over 5 |
623 | |
624 | =item B<-h> help |
625 | |
626 | Prints out a brief help message. |
627 | |
628 | =item B<-v> verbose |
629 | |
630 | Describes search for the item in detail. |
631 | |
632 | =item B<-t> text output |
633 | |
634 | Display docs using plain text converter, instead of nroff. This may be faster, |
635 | but it won't look as nice. |
636 | |
637 | =item B<-u> unformatted |
638 | |
639 | Find docs only; skip reformatting by pod2* |
640 | |
641 | =item B<-m> module |
642 | |
643 | Display the entire module: both code and unformatted pod documentation. |
644 | This may be useful if the docs don't explain a function in the detail |
645 | you need, and you'd like to inspect the code directly; perldoc will find |
646 | the file for you and simply hand it off for display. |
647 | |
44a8e56a |
648 | =item B<-l> file name only |
649 | |
650 | Display the file name of the module found. |
651 | |
cce34969 |
652 | =item B<-F> file names |
653 | |
89b8affa |
654 | Consider arguments as file names, no search in directories will be performed. |
cce34969 |
655 | |
31bdbec1 |
656 | =item B<-f> perlfunc |
657 | |
658 | The B<-f> option followed by the name of a perl built in function will |
659 | extract the documentation of this function from L<perlfunc>. |
660 | |
c8950503 |
661 | =item B<-q> perlfaq |
662 | |
663 | The B<-q> option takes a regular expression as an argument. It will search |
664 | the question headings in perlfaq[1-9] and print the entries matching |
665 | the regular expression. |
666 | |
89b8affa |
667 | =item B<-X> use an index if present |
668 | |
669 | The B<-X> option looks for a entry whose basename matches the name given on the |
670 | command line in the file C<$Config{archlib}/pod.idx>. The pod.idx file should |
671 | contain fully qualified filenames, one per line. |
672 | |
7eda7aea |
673 | =item B<PageName|ModuleName|ProgramName> |
674 | |
675 | The item you want to look up. Nested modules (such as C<File::Basename>) |
676 | are specified either as C<File::Basename> or C<File/Basename>. You may also |
1b420867 |
677 | give a descriptive name of a page, such as C<perlfunc>. You may also give a |
7eda7aea |
678 | partial or wrong-case name, such as "basename" for "File::Basename", but |
679 | this will be slower, if there is more then one page with the same partial |
680 | name, you will only get the first one. |
681 | |
682 | =back |
683 | |
684 | =head1 ENVIRONMENT |
685 | |
febd60db |
686 | Any switches in the C<PERLDOC> environment variable will be used before the |
7eda7aea |
687 | command line arguments. C<perldoc> also searches directories |
688 | specified by the C<PERL5LIB> (or C<PERLLIB> if C<PERL5LIB> is not |
689 | defined) and C<PATH> environment variables. |
690 | (The latter is so that embedded pods for executables, such as |
a3cb178b |
691 | C<perldoc> itself, are available.) C<perldoc> will use, in order of |
692 | preference, the pager defined in C<PERLDOC_PAGER>, C<MANPAGER>, or |
693 | C<PAGER> before trying to find a pager on its own. (C<MANPAGER> is not |
694 | used if C<perldoc> was told to display plain text or unformatted pod.) |
7eda7aea |
695 | |
eb459f90 |
696 | One useful value for C<PERLDOC_PAGER> is C<less -+C -E>. |
697 | |
febd60db |
698 | =head1 VERSION |
699 | |
700 | This is perldoc v2.0. |
701 | |
7eda7aea |
702 | =head1 AUTHOR |
703 | |
704 | Kenneth Albanowski <kjahds@kjahds.com> |
705 | |
febd60db |
706 | Minor updates by Andy Dougherty <doughera@lafcol.lafayette.edu>, |
707 | and others. |
7eda7aea |
708 | |
7eda7aea |
709 | =cut |
710 | |
711 | # |
c5ae3962 |
712 | # Version 1.14: Wed Jul 15 01:50:20 EST 1998 |
713 | # Robin Barker <rmb1@cise.npl.co.uk> |
714 | # -strict, -w cleanups |
89b8affa |
715 | # Version 1.13: Fri Feb 27 16:20:50 EST 1997 |
716 | # Gurusamy Sarathy <gsar@umich.edu> |
717 | # -doc tweaks for -F and -X options |
137443ea |
718 | # Version 1.12: Sat Apr 12 22:41:09 EST 1997 |
719 | # Gurusamy Sarathy <gsar@umich.edu> |
720 | # -various fixes for win32 |
7eda7aea |
721 | # Version 1.11: Tue Dec 26 09:54:33 EST 1995 |
722 | # Kenneth Albanowski <kjahds@kjahds.com> |
723 | # -added Charles Bailey's further VMS patches, and -u switch |
724 | # -added -t switch, with pod2text support |
febd60db |
725 | # |
7eda7aea |
726 | # Version 1.10: Thu Nov 9 07:23:47 EST 1995 |
727 | # Kenneth Albanowski <kjahds@kjahds.com> |
728 | # -added VMS support |
729 | # -added better error recognition (on no found pages, just exit. On |
730 | # missing nroff/pod2man, just display raw pod.) |
731 | # -added recursive/case-insensitive matching (thanks, Andreas). This |
732 | # slows things down a bit, unfortunately. Give a precise name, and |
733 | # it'll run faster. |
734 | # |
735 | # Version 1.01: Tue May 30 14:47:34 EDT 1995 |
736 | # Andy Dougherty <doughera@lafcol.lafayette.edu> |
737 | # -added pod documentation. |
738 | # -added PATH searching. |
739 | # -added searching pod/ subdirectory (mainly to pick up perlfunc.pod |
740 | # and friends. |
741 | # |
742 | # |
743 | # TODO: |
744 | # |
745 | # Cache directories read during sloppy match |
4633a7c4 |
746 | !NO!SUBS! |
747 | |
748 | close OUT or die "Can't close $file: $!"; |
749 | chmod 0755, $file or die "Can't reset permissions for $file: $!\n"; |
750 | exec("$Config{'eunicefix'} $file") if $Config{'eunicefix'} ne ':'; |
8a5546a1 |
751 | chdir $origdir; |