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# ex:ts=8 sw=4:
# $OpenBSD: Formated.pm,v 1.4 2009/10/11 08:14:37 sthen Exp $
# Copyright (c) 2000-2004 Marc Espie <espie@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
use strict;
use warnings;
package OpenBSD::Makewhatis::Formated;
# add_formated_subject($subjects, $_, $section, $filename, $picky):
# add subject $_ to the list of current $subjects, in section $section.
#
sub add_formated_subject
{
my ($subjects, $line, $section, $filename, $picky) = @_;
local $_ = $line;
if (m/-/) {
s/([-+.\w\d,])\s+/$1 /g;
s/([a-z][A-z])-\s+/$1/g;
# some twits use: func -- description
if (m/^[^-+.\w\d]*(.*?) -(?:-?)\s+(.*)/) {
my ($func, $descr) = ($1, $2);
$func =~ s/,\s*$//;
# nroff will tend to cut function names at the weirdest places
if (length($func) > 40 && $func =~ m/,/ && $section =~ /^3/) {
$func =~ s/\b \b//g;
}
$_ = "$func ($section) - $descr";
push(@$subjects, $_);
return;
}
}
print STDERR "Weird subject line in $filename:\n$_\n" if $picky;
# try to find subject in line anyway
if (m/^\s*(.*\S)(?:\s{3,}|\(\)\s+)(.*?)\s*$/) {
my ($func, $descr) = ($1, $2);
$func =~ s/\s+/ /g;
$descr =~ s/\s+/ /g;
$_ = "$func ($section) - $descr";
push(@$subjects, $_);
return;
}
print STDERR "Weird subject line in $filename:\n$_\n" unless $picky;
}
# $lines = handle($file, $filename, $picky)
#
# handle a formatted manpage in $file
#
# may return several subjects, perl(3p) do !
#
sub handle
{
my ($file, $filename, $picky) = @_;
local $_;
my ($section, $subject);
my @lines=();
my $foundname = 0;
while (<$file>) {
chomp;
if (m/^$/) {
# perl aggregates several subjects in one manpage
# so we don't stop after we've got one subject
add_formated_subject(\@lines, $subject, $section, $filename, $picky)
if defined $subject;
$subject = undef;
next;
}
# Remove boldface from wide characters
while (s/(..)\cH\cH\1/$1/g)
{}
# Remove boldface and underlining
while (s/_\cH//g || s/(.)\cH\1/$1/g)
{}
if (!$foundname && m/\w[-+.\w\d]*\(([-+.\w\d\/]+)\)/) {
$section = $1;
# Find architecture
if (m/Manual\s+\((.*?)\)/) {
$section = "$section/$1";
}
}
# Not all man pages are in english
# weird hex is `Namae' in japanese
if (m/^(?:NAME|NAMES|NAMN|NOMBRE|NOME|Name|\xbe|\xcc\xbe\xbe\xce|\xcc\xbe\xc1\xb0)\s*$/) {
unless (defined $section) {
# try to retrieve section from filename
if ($filename =~ m/(?:cat|man)([\dln])\//) {
$section = $1;
print STDERR "Can't find section in $filename, deducting $section from context\n" if $picky;
} else {
$section='??';
print STDERR "Can't find section in $filename\n";
}
}
$foundname = 1;
next;
}
if ($foundname) {
if (m/^\S/ || m/^\s+\*{3,}\s*$/) {
add_formated_subject(\@lines, $subject, $section, $filename, $picky)
if defined $subject;
last;
} else {
# deal with troff hyphenations
if (defined $subject and $subject =~ m/\xad\s*$/) {
$subject =~ s/(?:\xad\cH)*\xad\s*$//;
s/^\s*//;
}
# more troff hyphenation
if (defined $subject and $subject =~ m/\S(?:\-\cH)*\-$/) {
$subject =~ s/(?:\-\cH)*\-$//;
s/^\s*//;
}
s/^\s+/ /;
$subject.=$_;
}
}
}
print STDERR "Can't parse $filename (not a manpage ?)\n" if @lines == 0;
return \@lines;
}
1;
|
