3 require 5.003; # keep this compatible, an old perl is all we may have before
8 require 'regen_lib.pl';
14 # See database of global and static function prototypes in embed.fnc
15 # This is used to generate prototype headers under various configurations,
16 # export symbols lists for different platforms, and macros to provide an
17 # implicit interpreter context argument.
20 open IN, "embed.fnc" or die $!;
22 # walk table providing an array of components in each line to
23 # subroutine, printing the result
26 my $filename = shift || '-';
31 if (ref $filename) { # filehandle
35 safer_unlink $filename;
36 $F = safer_open($filename);
40 print $F $leader if $leader;
41 seek IN, 0, 0; # so we may restart
55 @args = split /\s*\|\s*/, $_;
57 s/\b(NN|NULLOK)\b\s+//g for @args;
58 print $F $function->(@args);
60 print $F $trailer if $trailer;
61 unless (ref $filename) {
62 close $F or die "Error closing $filename: $!";
71 my $curheader = "Unknown section";
73 sub autodoc ($$) { # parse a file and extract documentation info
77 while (defined($in = <$fh>)) {
78 if ($in=~ /^=head1 (.*)/) {
83 if ($in =~ /^=for\s+apidoc\s+(.*?)\s*\n/) {
85 $proto = "||$proto" unless $proto =~ /\|/;
86 my($flags, $ret, $name, @args) = split /\|/, $proto;
89 while (defined($doc = <$fh>)) {
91 last DOC if $doc =~ /^=\w+/;
92 if ($doc =~ m:^\*/$:) {
93 warn "=cut missing? $file:$line:$doc";;
98 $docs = "\n$docs" if $docs and $docs !~ /^\n/;
101 $apidocs{$curheader}{$name} = [$flags, $docs, $ret, $file, @args];
104 $gutsdocs{$curheader}{$name} = [$flags, $docs, $ret, $file, @args];
108 $docfuncs{$name} = [$flags, $docs, $ret, $file, $curheader, @args];
111 if ($doc =~ /^=(?:for|head)/) {
116 warn "$file:$line:$in";
122 sub docout ($$$) { # output the docs for one function
123 my($fh, $name, $docref) = @_;
124 my($flags, $docs, $ret, $file, @args) = @$docref;
127 $docs .= "NOTE: this function is experimental and may change or be
128 removed without notice.\n\n" if $flags =~ /x/;
129 $docs .= "NOTE: the perl_ form of this function is deprecated.\n\n"
132 print $fh "=item $name\nX<$name>\n$docs";
134 if ($flags =~ /U/) { # no usage
136 } elsif ($flags =~ /s/) { # semicolon ("dTHR;")
137 print $fh "\t\t$name;\n\n";
138 } elsif ($flags =~ /n/) { # no args
139 print $fh "\t$ret\t$name\n\n";
140 } else { # full usage
141 print $fh "\t$ret\t$name";
142 print $fh "(" . join(", ", @args) . ")";
145 print $fh "=for hackers\nFound in file $file\n\n";
148 sub readonly_header (*) {
151 -*- buffer-read-only: t -*-
153 !!!!!!! DO NOT EDIT THIS FILE !!!!!!!
154 This file is built by $0 extracting documentation from the C source
160 sub readonly_footer (*) {
170 # glob() picks up docs from extra .c or .h files that may be in unclean
174 open FH, "MANIFEST" or die "Can't open MANIFEST: $!";
178 for $file (($MANIFEST =~ /^(\S+\.c)\t/gm), ($MANIFEST =~ /^(\S+\.h)\t/gm)) {
179 open F, "< $file" or die "Cannot open $file for docs: $!\n";
180 $curheader = "Functions in file $file\n";
182 close F or die "Error closing $file: $!\n";
185 safer_unlink "pod/perlapi.pod";
186 my $doc = safer_open("pod/perlapi.pod");
188 walk_table { # load documented functions into appropriate hash
190 my($flags, $retval, $func, @args) = @_;
191 return "" unless $flags =~ /d/;
192 $func =~ s/\t//g; $flags =~ s/p//; # clean up fields from embed.pl
194 my $docref = delete $docfuncs{$func};
195 $seenfuncs{$func} = 1;
196 if ($docref and @$docref) {
198 $docref->[0].="x" if $flags =~ /M/;
199 $apidocs{$docref->[4]}{$func} =
200 [$docref->[0] . 'A', $docref->[1], $retval, $docref->[3],
203 $gutsdocs{$docref->[4]}{$func} =
204 [$docref->[0], $docref->[1], $retval, $docref->[3], @args];
208 warn "no docs for $func\n" unless $seenfuncs{$func};
214 for (sort keys %docfuncs) {
215 # Have you used a full for apidoc or just a func name?
216 # Have you used Ap instead of Am in the for apidoc?
217 warn "Unable to place $_!\n";
220 readonly_header($doc);
222 print $doc <<'_EOB_';
225 perlapi - autogenerated documentation for the perl public API
228 X<Perl API> X<API> X<api>
230 This file contains the documentation of the perl public API generated by
231 embed.pl, specifically a listing of functions, macros, flags, and variables
232 that may be used by extension writers. The interfaces of any functions that
233 are not listed here are subject to change without notice. For this reason,
234 blindly using functions listed in proto.h is to be avoided when writing
237 Note that all Perl API global variables must be referenced with the C<PL_>
238 prefix. Some macros are provided for compatibility with the older,
239 unadorned names, but this support may be disabled in a future release.
241 Perl was originally written to handle US-ASCII only (that is characters
242 whose ordinal numbers are in the range 0 - 127).
243 And documentation and comments may still use the term ASCII, when
244 sometimes in fact the entire range from 0 - 255 is meant.
246 Note that Perl can be compiled and run under EBCDIC (See L<perlebcdic>)
247 or ASCII. Most of the documentation (and even comments in the code)
248 ignore the EBCDIC possibility.
249 For almost all purposes the differences are transparent.
250 As an example, under EBCDIC,
251 instead of UTF-8, UTF-EBCDIC is used to encode Unicode strings, and so
252 whenever this documentation refers to C<utf8>
253 (and variants of that name, including in function names),
254 it also (essentially transparently) means C<UTF-EBCDIC>.
255 But the ordinals of characters differ between ASCII, EBCDIC, and
256 the UTF- encodings, and a string encoded in UTF-EBCDIC may occupy more bytes
259 Also, on some EBCDIC machines, functions that are documented as operating on
260 US-ASCII (or Basic Latin in Unicode terminology) may in fact operate on all
261 256 characters in the EBCDIC range, not just the subset corresponding to
264 The listing below is alphabetical, case insensitive.
269 # case insensitive sort, with fallback for determinacy
270 for $key (sort { uc($a) cmp uc($b) || $a cmp $b } keys %apidocs) {
271 my $section = $apidocs{$key};
272 print $doc "\n=head1 $key\n\n=over 8\n\n";
273 # Again, fallback for determinacy
274 for my $key (sort { uc($a) cmp uc($b) || $a cmp $b } keys %$section) {
275 docout($doc, $key, $section->{$key});
277 print $doc "\n=back\n";
280 print $doc <<'_EOE_';
284 Until May 1997, this document was maintained by Jeff Okamoto
285 <okamoto@corp.hp.com>. It is now maintained as part of Perl itself.
287 With lots of help and suggestions from Dean Roehrich, Malcolm Beattie,
288 Andreas Koenig, Paul Hudson, Ilya Zakharevich, Paul Marquess, Neil
289 Bowers, Matthew Green, Tim Bunce, Spider Boardman, Ulrich Pfeifer,
290 Stephen McCamant, and Gurusamy Sarathy.
292 API Listing originally by Dean Roehrich <roehrich@cray.com>.
294 Updated to be autogenerated from comments in the source by Benjamin Stuhl.
298 perlguts(1), perlxs(1), perlxstut(1), perlintern(1)
302 readonly_footer($doc);
306 safer_unlink "pod/perlintern.pod";
307 my $guts = safer_open("pod/perlintern.pod");
308 readonly_header($guts);
312 perlintern - autogenerated documentation of purely B<internal>
316 X<internal Perl functions> X<interpreter functions>
318 This file is the autogenerated documentation of functions in the
319 Perl interpreter that are documented using Perl's internal documentation
320 format but are not marked as part of the Perl API. In other words,
321 B<they are not for use in extensions>!
325 for $key (sort { uc($a) cmp uc($b); } keys %gutsdocs) {
326 my $section = $gutsdocs{$key};
327 print $guts "\n=head1 $key\n\n=over 8\n\n";
328 for my $key (sort { uc($a) cmp uc($b); } keys %$section) {
329 docout($guts, $key, $section->{$key});
331 print $guts "\n=back\n";
338 The autodocumentation system was originally added to the Perl core by
339 Benjamin Stuhl. Documentation is by whoever was kind enough to
340 document their functions.
344 perlguts(1), perlapi(1)
347 readonly_footer($guts);