/usr/share/automake-1.7/Automake/General.pm is in automake1.7 1.7.9-9.1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 | # Copyright 2001 Free Software Foundation, Inc.
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2, or (at your option)
# any later version.
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
# 02111-1307, USA.
package Automake::General;
use 5.005;
use Exporter;
use File::Basename;
use File::stat;
use IO::File;
use Carp;
use strict;
use vars qw (@ISA @EXPORT);
@ISA = qw (Exporter);
@EXPORT = qw (&debug &find_configure_ac &find_file &getopt &mktmpdir &mtime
&uniq &update_file &verbose &xsystem
$debug $help $me $tmp $verbose $version);
# Variable we share with the main package. Be sure to have a single
# copy of them: using `my' together with multiple inclusion of this
# package would introduce several copies.
use vars qw ($debug);
$debug = 0;
use vars qw ($help);
$help = undef;
use vars qw ($me);
$me = basename ($0);
# Our tmp dir.
use vars qw ($tmp);
$tmp = undef;
use vars qw ($verbose);
$verbose = 0;
use vars qw ($version);
$version = undef;
# END
# ---
# Exit nonzero whenever closing STDOUT fails.
# Ideally we should `exit ($? >> 8)', unfortunately, for some reason
# I don't understand, whenever we `exit (1)' somewhere in the code,
# we arrive here with `$? = 29'. I suspect some low level END routine
# might be responsible. In this case, be sure to exit 1, not 29.
sub END
{
my $exit_status = $? ? 1 : 0;
use POSIX qw (_exit);
if (!$debug && defined $tmp && -d $tmp)
{
if (<$tmp/*>)
{
unlink <$tmp/*>
or carp ("$me: cannot empty $tmp: $!\n"), _exit (1);
}
rmdir $tmp
or carp ("$me: cannot remove $tmp: $!\n"), _exit (1);
}
# This is required if the code might send any output to stdout
# E.g., even --version or --help. So it's best to do it unconditionally.
close STDOUT
or (carp "$me: closing standard output: $!\n"), _exit (1);
_exit ($exit_status);
}
# debug(@MESSAGE)
# ---------------
# Messages displayed only if $DEBUG and $VERBOSE.
sub debug (@)
{
print STDERR "$me: ", @_, "\n"
if $verbose && $debug;
}
# $CONFIGURE_AC
# &find_configure_ac ()
# ---------------------
sub find_configure_ac ()
{
if (-f 'configure.ac')
{
if (-f 'configure.in')
{
carp "warning: `configure.ac' and `configure.in' both present.\n";
carp "warning: proceeding with `configure.ac'.\n";
}
return 'configure.ac';
}
elsif (-f 'configure.in')
{
return 'configure.in';
}
return;
}
# $FILENAME
# find_file ($FILENAME, @INCLUDE)
# -------------------------------
# We match exactly the behavior of GNU m4: first look in the current
# directory (which includes the case of absolute file names), and, if
# the file is not absolute, just fail. Otherwise, look in the path.
#
# If the file is flagged as optional (ends with `?'), then return undef
# if absent.
sub find_file ($@)
{
use File::Spec;
my ($filename, @include) = @_;
my $optional = 0;
$optional = 1
if $filename =~ s/\?$//;
return File::Spec->canonpath ($filename)
if -e $filename;
if (File::Spec->file_name_is_absolute ($filename))
{
die "$me: no such file or directory: $filename\n"
unless $optional;
return undef;
}
foreach my $path (reverse @include)
{
return File::Spec->canonpath (File::Spec->catfile ($path, $filename))
if -e File::Spec->catfile ($path, $filename)
}
die "$me: no such file or directory: $filename\n"
unless $optional;
return undef;
}
# getopt (%OPTION)
# ----------------
# Handle the %OPTION, plus all the common options.
# Work around Getopt bugs wrt `-'.
sub getopt (%)
{
my (%option) = @_;
use Getopt::Long;
# F*k. Getopt seems bogus and dies when given `-' with `bundling'.
# If fixed some day, use this: '' => sub { push @ARGV, "-" }
my $stdin = grep /^-$/, @ARGV;
@ARGV = grep !/^-$/, @ARGV;
%option = (%option,
"h|help" => sub { print $help; exit 0 },
"V|version" => sub { print $version; exit 0 },
"v|verbose" => \$verbose,
"d|debug" => \$debug,
);
Getopt::Long::Configure ("bundling");
GetOptions (%option)
or exit 1;
push @ARGV, '-'
if $stdin;
}
# mktmpdir ($SIGNATURE)
# ---------------------
# Create a temporary directory which name is based on $SIGNATURE.
sub mktmpdir ($)
{
my ($signature) = @_;
my $TMPDIR = $ENV{'TMPDIR'} || '/tmp';
# If mktemp supports dirs, use it.
$tmp = `(umask 077 &&
mktemp -d -q "$TMPDIR/${signature}XXXXXX") 2>/dev/null`;
chomp $tmp;
if (!$tmp || ! -d $tmp)
{
$tmp = "$TMPDIR/$signature" . int (rand 10000) . ".$$";
mkdir $tmp, 0700
or croak "$me: cannot create $tmp: $!\n";
}
print STDERR "$me:$$: working in $tmp\n"
if $debug;
}
# $MTIME
# MTIME ($FILE)
# -------------
# Return the mtime of $FILE. Missing files, or `-' standing for STDIN
# or STDOUT are ``obsolete'', i.e., as old as possible.
sub mtime ($)
{
my ($file) = @_;
return 0
if $file eq '-' || ! -f $file;
my $stat = stat ($file)
or croak "$me: cannot stat $file: $!\n";
return $stat->mtime;
}
# @RES
# uniq (@LIST)
# ------------
# Return LIST with no duplicates.
sub uniq (@)
{
my @res = ();
my %seen = ();
foreach my $item (@_)
{
if (! exists $seen{$item})
{
$seen{$item} = 1;
push (@res, $item);
}
}
return wantarray ? @res : "@res";
}
# &update_file ($FROM, $TO)
# -------------------------
# Rename $FROM as $TO, preserving $TO timestamp if it has not changed.
# Recognize `$TO = -' standing for stdin.
sub update_file ($$)
{
my ($from, $to) = @_;
my $SIMPLE_BACKUP_SUFFIX = $ENV{'SIMPLE_BACKUP_SUFFIX'} || '~';
use File::Compare;
use File::Copy;
if ($to eq '-')
{
my $in = new IO::File ("$from");
my $out = new IO::File (">-");
while ($_ = $in->getline)
{
print $out $_;
}
$in->close;
unlink ($from)
or die "$me: cannot not remove $from: $!\n";
return;
}
if (-f "$to" && compare ("$from", "$to") == 0)
{
# File didn't change, so don't update its mod time.
print STDERR "$me: `$to' is unchanged\n";
return
}
if (-f "$to")
{
# Back up and install the new one.
move ("$to", "$to$SIMPLE_BACKUP_SUFFIX")
or die "$me: cannot not backup $to: $!\n";
move ("$from", "$to")
or die "$me: cannot not rename $from as $to: $!\n";
print STDERR "$me: `$to' is updated\n";
}
else
{
move ("$from", "$to")
or die "$me: cannot not rename $from as $to: $!\n";
print STDERR "$me: `$to' is created\n";
}
}
# verbose(@MESSAGE)
# -----------------
sub verbose (@)
{
print STDERR "$me: ", @_, "\n"
if $verbose;
}
# xsystem ($COMMAND)
# ------------------
sub xsystem ($)
{
my ($command) = @_;
verbose "running: $command";
(system $command) == 0
or croak ("$me: "
. (split (' ', $command))[0]
. " failed with exit status: "
. ($? >> 8)
. "\n");
}
1; # for require
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