# Has an optional arg, which is the directory to chdir to before reading
# MANIFEST and *.[ch].
#
-# This script is normally invoked as part of 'make all', but is also
-# called from regen.pl.
+# This script is invoked as part of 'make all'
#
-# '=head1' are the only headings looked for. If the next line after the
-# heading begins with a word character, it is considered to be the first line
-# of documentation that applies to the heading itself. That is, it is output
-# immediately after the heading, before the first function, and not indented.
-# The next input line that is a pod directive terminates this heading-level
-# documentation.
+# '=head1' are the only headings looked for. If the first non-blank line after
+# the heading begins with a word character, it is considered to be the first
+# line of documentation that applies to the heading itself. That is, it is
+# output immediately after the heading, before the first function, and not
+# indented. The next input line that is a pod directive terminates this
+# heading-level documentation.
use strict;
chdir $workdir
or die "Couldn't chdir to '$workdir': $!";
}
-require 'regen/regen_lib.pl';
-require 'regen/embed_lib.pl';
+require './regen/regen_lib.pl';
+require './regen/embed_lib.pl';
#
# See database of global and static function prototypes in embed.fnc
sub autodoc ($$) { # parse a file and extract documentation info
my($fh,$file) = @_;
my($in, $doc, $line, $header_doc);
+
+ # Count lines easier
+ my $get_next_line = sub { $line++; return <$fh> };
+
FUNC:
- while (defined($in = <$fh>)) {
+ while (defined($in = $get_next_line->())) {
if ($in =~ /^#\s*define\s+([A-Za-z_][A-Za-z_0-9]+)\(/ &&
($file ne 'embed.h' || $file ne 'proto.h')) {
$macro{$1} = $file;
if ($in=~ /^=head1 (.*)/) {
$curheader = $1;
- # If the next line begins with a word char, then is the start of
- # heading-level documentation.
- if (defined($doc = <$fh>)) {
+ # If the next non-space line begins with a word char, then it is
+ # the start of heading-ldevel documentation.
+ if (defined($doc = $get_next_line->())) {
+ # Skip over empty lines
+ while ($doc =~ /^\s+$/) {
+ if (! defined($doc = $get_next_line->())) {
+ next FUNC;
+ }
+ }
+
if ($doc !~ /^\w/) {
$in = $doc;
redo FUNC;
}
$header_doc = $doc;
- $line++;
# Continue getting the heading-level documentation until read
# in any pod directive (or as a fail-safe, find a closing
# comment to this pod in a C language file
HDR_DOC:
- while (defined($doc = <$fh>)) {
+ while (defined($doc = $get_next_line->())) {
if ($doc =~ /^=\w/) {
$in = $doc;
redo FUNC;
}
- $line++;
if ($doc =~ m:^\s*\*/$:) {
warn "=cut missing? $file:$line:$doc";;
}
next FUNC;
}
- $line++;
if ($in =~ /^=for\s+apidoc\s+(.*?)\s*\n/) {
my $proto = $1;
$proto = "||$proto" unless $proto =~ /\|/;
my($flags, $ret, $name, @args) = split /\|/, $proto;
my $docs = "";
DOC:
- while (defined($doc = <$fh>)) {
- $line++;
- last DOC if $doc =~ /^=\w+/;
+ while (defined($doc = $get_next_line->())) {
+
+ # Other pod commands are considered part of the current
+ # function's docs, so can have lists, etc.
+ last DOC if $doc =~ /^=(cut|for\s+apidoc|head)/;
if ($doc =~ m:^\*/$:) {
warn "=cut missing? $file:$line:$doc";;
last DOC;
- }
+ }
$docs .= $doc;
}
$docs = "\n$docs" if $docs and $docs !~ /^\n/;
$ret = $docref->{retval};
}
+ if (exists $docs{$inline_where}{$curheader}{$name}) {
+ warn "$0: duplicate API entry for '$name' in $inline_where/$curheader\n";
+ next;
+ }
$docs{$inline_where}{$curheader}{$name}
= [$flags, $docs, $ret, $file, @args];
print $fh "=for hackers\nFound in file $file\n\n";
}
+sub sort_helper {
+ # Do a case-insensitive dictionary sort, with only alphabetics
+ # significant, falling back to using everything for determinancy
+ return (uc($a =~ s/[[:^alpha:]]//r) cmp uc($b =~ s/[[:^alpha:]]//r))
+ || uc($a) cmp uc($b)
+ || $a cmp $b;
+}
+
sub output {
my ($podname, $header, $dochash, $missing, $footer) = @_;
my $fh = open_new("pod/$podname.pod", undef,
print $fh $header;
my $key;
- # case insensitive sort, with fallback for determinacy
- for $key (sort { uc($a) cmp uc($b) || $a cmp $b } keys %$dochash) {
+ for $key (sort sort_helper keys %$dochash) {
my $section = $dochash->{$key};
print $fh "\n=head1 $key\n\n";
}
print $fh "=over 8\n\n";
- # Again, fallback for determinacy
- for my $key (sort { uc($a) cmp uc($b) || $a cmp $b } keys %$section) {
+ for my $key (sort sort_helper keys %$section) {
docout($fh, $key, $section->{$key});
}
print $fh "\n=back\n";
print $fh "\n=head1 Undocumented functions\n\n";
print $fh $podname eq 'perlapi' ? <<'_EOB_' : <<'_EOB_';
The following functions have been flagged as part of the public API,
-but are currently undocumented. Use them at your own risk, as the
+but are currently undocumented. Use them at your own risk, as the
interfaces are subject to change. Functions that are not listed in this
document are not intended for public use, and should NOT be used under any
circumstances.
-If you use one of the undocumented functions below, you may wish to consider
-creating and submitting documentation for it. If your patch is accepted, this
-will indicate that the interface is stable (unless it is explicitly marked
-otherwise).
+If you feel you need to use one of these functions, first send email to
+L<perl5-porters@perl.org|mailto:perl5-porters@perl.org>. It may be
+that there is a good reason for the function not being documented, and it
+should be removed from this list; or it may just be that no one has gotten
+around to documenting it. In the latter case, you will be asked to submit a
+patch to document the function. Once your patch is accepted, it will indicate
+that the interface is stable (unless it is explicitly marked otherwise) and
+usable by you.
=over
while (my $line = <$fh>) {
next unless my ($file) = $line =~ /^(\S+\.[ch])\t/;
- open F, "< $file" or die "Cannot open $file for docs: $!\n";
+ open F, '<', $file or die "Cannot open $file for docs: $!\n";
$curheader = "Functions in file $file\n";
autodoc(\*F,$file);
close F or die "Error closing $file: $!\n";
F<embed.pl>, specifically a listing of functions, macros, flags, and variables
that may be used by extension writers. L<At the end|/Undocumented functions>
is a list of functions which have yet to be documented. The interfaces of
-those are subject to change without notice. Any functions not listed here are
+those are subject to change without notice. Anything not listed here is
not part of the public API, and should not be used by extension writers at
all. For these reasons, blindly using functions listed in proto.h is to be
avoided when writing extensions.
+In Perl, unlike C, a string of characters may generally contain embedded
+C<NUL> characters. Sometimes in the documentation a Perl string is referred
+to as a "buffer" to distinguish it from a C string, but sometimes they are
+both just referred to as strings.
+
Note that all Perl API global variables must be referenced with the C<PL_>
-prefix. Some macros are provided for compatibility with the older,
+prefix. Again, those not listed here are not to be used by extension writers,
+and can be changed or removed without notice; same with macros.
+Some macros are provided for compatibility with the older,
unadorned names, but this support may be disabled in a future release.
Perl was originally written to handle US-ASCII only (that is characters
And documentation and comments may still use the term ASCII, when
sometimes in fact the entire range from 0 - 255 is meant.
-Note that Perl can be compiled and run under EBCDIC (See L<perlebcdic>)
-or ASCII. Most of the documentation (and even comments in the code)
+The non-ASCII characters below 256 can have various meanings, depending on
+various things. (See, most notably, L<perllocale>.) But usually the whole
+range can be referred to as ISO-8859-1. Often, the term "Latin-1" (or
+"Latin1") is used as an equivalent for ISO-8859-1. But some people treat
+"Latin1" as referring just to the characters in the range 128 through 255, or
+somethimes from 160 through 255.
+This documentation uses "Latin1" and "Latin-1" to refer to all 256 characters.
+
+Note that Perl can be compiled and run under either ASCII or EBCDIC (See
+L<perlebcdic>). Most of the documentation (and even comments in the code)
ignore the EBCDIC possibility.
For almost all purposes the differences are transparent.
As an example, under EBCDIC,
(and variants of that name, including in function names),
it also (essentially transparently) means C<UTF-EBCDIC>.
But the ordinals of characters differ between ASCII, EBCDIC, and
-the UTF- encodings, and a string encoded in UTF-EBCDIC may occupy more bytes
-than in UTF-8.
+the UTF- encodings, and a string encoded in UTF-EBCDIC may occupy a different
+number of bytes than in UTF-8.
The listing below is alphabetical, case insensitive.
This file is the autogenerated documentation of functions in the
Perl interpreter that are documented using Perl's internal documentation
-format but are not marked as part of the Perl API. In other words,
+format but are not marked as part of the Perl API. In other words,
B<they are not for use in extensions>!
END
=head1 AUTHORS
The autodocumentation system was originally added to the Perl core by
-Benjamin Stuhl. Documentation is by whoever was kind enough to
+Benjamin Stuhl. Documentation is by whoever was kind enough to
document their functions.
=head1 SEE ALSO
https://perl5.git.perl.org / perl5.git / blobdiff