summaryrefslogtreecommitdiff
path: root/dh_installman
blob: e11828156f6c4b7dc5f4a21f5ca8e460f014014a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
#!/usr/bin/perl -w

=head1 NAME

dh_installman - install man pages into package build directories

=cut

use strict;
use File::Find;
use Debian::Debhelper::Dh_Lib;

=head1 SYNOPSIS

B<dh_installman> [S<I<debhelper options>>] [S<I<manpage> ...>]

=head1 DESCRIPTION

B<dh_installman> is a debhelper program that handles installing
man pages into the correct locations in package build directories. You tell
it what man pages go in your packages, and it figures out where to
install them based on the section field in their B<.TH> line. If you have a
properly formatted B<.TH> line, your man page will be installed into the right
directory, with the right name (this includes proper handling of pages
with a subsection, like B<3perl>, which are placed in F<man3>, and given an
extension of F<.3perl>). If your B<.TH> line is incorrect or missing, the program
may guess wrong based on the file extension.

It also supports translated man pages, by looking for extensions
like F<.ll.8> and F<.ll_LL.8>, or by use of the B<--language> switch.

If B<dh_installman> seems to install a man page into the wrong section or with
the wrong extension, this is because the man page has the wrong section
listed in its B<.TH> line. Edit the man page and correct the section, and
B<dh_installman> will follow suit. See L<man(7)> for details about the B<.TH>
section. If B<dh_installman> seems to install a man page into a directory
like F</usr/share/man/pl/man1/>, that is because your program has a
name like F<foo.pl>, and B<dh_installman> assumes that means it is translated
into Polish. Use B<--language=C> to avoid this.

After the man page installation step, B<dh_installman> will check to see if
any of the man pages in the temporary directories of any of the packages it
is acting on contain F<.so> links. If so, it changes them to symlinks.

Also, B<dh_installman> will use man to guess the character encoding of each
manual page and convert it to UTF-8. If the guesswork fails for some
reason, you can override it using an encoding declaration. See
L<manconv(1)> for details.

=head1 FILES

=over 4

=item debian/I<package>.manpages

Lists man pages to be installed.

=back

=head1 OPTIONS

=over 4

=item B<-A>, B<--all>

Install all files specified by command line parameters in ALL packages
acted on.

=item B<--language=>I<ll>

Use this to specify that the man pages being acted on are written in the
specified language.

=item I<manpage> ...

Install these man pages into the first package acted on. (Or in all
packages if B<-A> is specified).

=back

=head1 NOTES

An older version of this program, L<dh_installmanpages(1)>, is still used
by some packages, and so is still included in debhelper.
It is, however, deprecated, due to its counterintuitive and inconsistent
interface. Use this program instead.

=cut

init(options => {
	"language=s" => \$dh{LANGUAGE},
});

my @sofiles;
my @sodests;

foreach my $package (@{$dh{DOPACKAGES}}) {
	next if is_udeb($package);

	my $tmp=tmpdir($package);
	my $file=pkgfile($package,"manpages");
	my @manpages;

	@manpages=filearray($file, ".") if $file;

	if (($package eq $dh{FIRSTPACKAGE} || $dh{PARAMS_ALL}) && @ARGV) {
		push @manpages, @ARGV;
	}

	foreach my $page (@manpages) {
		my $basename=basename($page);

		# Support compressed pages.
		my $gz='';
		if ($basename=~m/(.*)(\.gz)/) {
			$basename=$1;
			$gz=$2;
		}

		my $section;
		# See if there is a .TH entry in the man page. If so,
		# we'll pull the section field from that.
		if ($gz) {
			open (IN, "zcat $page|") or die "$page: $!";
		}
		else {
			open (IN, $page) or die "$page: $!";
		}
		while (<IN>) {
			if (/^\.TH\s+\S+\s+"?(\d+[^"\s]*)"?/) {
				$section=$1;
				last;
			}
		}
		# Failing that, we can try to get it from the filename.
		if (! $section) {
			($section)=$basename=~m/.*\.([1-9]\S*)/;
		}

		# Now get the numeric component of the section.
		my ($realsection)=$section=~m/^(\d)/ if defined $section;
		if (! $realsection) {
			error("Could not determine section for $page");
		}
		
		# Get the man page's name -- everything up to the last dot.
		my ($instname)=$basename=~m/^(.*)\./;
	
		my $destdir="$tmp/usr/share/man/man$realsection/";
		my $langcode;
		if (! defined $dh{LANGUAGE} || ! exists $dh{LANGUAGE}) {
			# Translated man pages are typically specified by adding the
			# language code to the filename, so detect that and
			# redirect to appropriate directory, stripping the code.
			($langcode)=$basename=~m/.*\.([a-z][a-z](?:_[A-Z][A-Z])?)\.(?:[1-9]|man)/;
		}
		elsif ($dh{LANGUAGE} ne 'C') {
			$langcode=$dh{LANGUAGE};
		}
		
		if (defined $langcode && $langcode ne '') {
			# Strip the language code from the instname.
			$instname=~s/\.$langcode$//;
		}
		
		if (defined $langcode && $langcode ne '') {
			$destdir="$tmp/usr/share/man/$langcode/man$realsection/";
		}
		$destdir=~tr:/:/:s; # just for looks
		my $instpage="$destdir$instname.$section";

		next if -l $instpage;
		next if compat(5) && -e $instpage;

		if (! -d $destdir) {
			doit "install","-d",$destdir;
		}
		if ($gz) {
			complex_doit "zcat \Q$page\E > \Q$instpage\E";
		}
		else {
			doit "install","-p","-m644",$page,$instpage;
		}
	}

	# Now the .so conversion.
	@sofiles=@sodests=();
	foreach my $dir (qw{usr/share/man}) {
		if (-e "$tmp/$dir") {
			find(\&find_so_man, "$tmp/$dir");
		}
	}
	foreach my $sofile (@sofiles) {
		my $sodest=shift(@sodests);
		doit "rm","-f",$sofile;
		doit "ln","-sf",$sodest,$sofile;
	}

	# Now utf-8 conversion.
	if (defined `man --version`) {
		foreach my $dir (qw{usr/share/man}) {
			next unless -e "$tmp/$dir";
			find(sub {
				return if ! -f $_ || -l $_;
				my ($tmp, $orig)=($_.".new", $_);
				complex_doit "man --recode UTF-8 ./\Q$orig\E > \Q$tmp\E";
				# recode uncompresses compressed pages
				doit "rm", "-f", $orig if s/\.(gz|Z)$//;
				doit "chmod", 644, $tmp;
				doit "mv", "-f", $tmp, $_;
			}, "$tmp/$dir");
		}
	}
}

# Check if a file is a .so man page, for use by File::Find.
sub find_so_man {
	# The -s test is becuase a .so file tends to be small. We don't want
	# to open every man page. 1024 is arbitrary.
	if (! -f $_ || -s $_ > 1024 || -s == 0) {
		return;
	}

	# Test first line of file for the .so thing.
	if (/\.gz$/) {
		open (SOTEST, "zcat $_|") or die "$_: $!";
	}
	else {
		open (SOTEST,$_) || die "$_: $!";
	}
	my $l=<SOTEST>;
	close SOTEST;

	if (! defined $l) {
		error("failed to read $_");
	}
	
	if ($l=~m/\.so\s+(.*)\s*/) {
		my $solink=$1;
		# This test is here to prevent links like ... man8/../man8/foo.8
		if (basename($File::Find::dir) eq
		    dirname($solink)) {
			$solink=basename($solink);
		}
		# A so link with a path is relative to the base of the man
		# page hierarchy, but without a path, is relative to the
		# current section.
		elsif ($solink =~ m!/!) {
			$solink="../$solink";
		}
	
		if (-e $solink || -e "$solink.gz") {
			push @sofiles,"$File::Find::dir/$_";
			push @sodests,$solink;
		}
	}
}

=head1 SEE ALSO

L<debhelper(7)>

This program is a part of debhelper.

=head1 AUTHOR

Joey Hess <joeyh@debian.org>

=cut