/usr/share/licompile/LiCompile/Utils.pm is in limba-licompile 0.5.6-2.
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 | package LiCompile::Utils;
use strict;
use warnings;
use Exporter;
use base qw(Exporter);
use IO::Handle;
use IPC::Open2;
use POSIX;
use Cwd qw(abs_path);
our @EXPORT = qw(debug error checkCommand empty homeDir searchLib searchStaticLib soname run parseDataFile writeDataFile);
our $debugOpened = 0;
##
# debug(message)
#
# If the environment variable $LICOMPILE_DEBUG is set to 1,
# then print a debugging message to /dev/tty (not stdout or stderr).
sub debug {
return if (empty($ENV{LICOMPILE_DEBUG}) || !$ENV{LICOMPILE_DEBUG});
if (!$debugOpened) {
if (open DEBUG, '>/dev/tty') {
$debugOpened = 1;
} else {
return;
}
}
my @args = split /\n/, "@_";
foreach (@args) {
$_ = '# ' . $_;
$_ .= "\n";
}
print DEBUG "\033[1;33m";
print DEBUG join '', @args;
print DEBUG "\033[0m";
DEBUG->flush;
}
##
# error(message)
#
# Print an error message to stderr. It will be displayed in red.
sub error {
print STDERR "\033[1;31m";
print STDERR $_[0];
print STDERR "\033[0m";
STDERR->flush;
}
##
# checkCommand(file)
# file: an command's filename.
# Returns: the full path to $file, or undef if $file is not a valid command.
#
# Checks whether $file is an executable which is in $PATH or the working directory.
#
# Example:
# checkCommand('gcc'); # Returns "/usr/bin/gcc"
sub checkCommand {
my ($file, $file2) = split / /, $_[0];
$file = $file2 if ($file =~ /ccache/);
return abs_path($file) if (-x $file);
foreach my $dir (split /:+/, $ENV{PATH}) {
if (-x "$dir/$file") {
return "$dir/$file";
}
}
return undef;
}
##
# empty(str)
#
# Checks whether $str is undefined or empty.
sub empty {
return !defined($_[0]) || $_[0] eq '';
}
##
# homeDir()
#
# Returns the user's home folder.
sub homeDir {
if (!$ENV{HOME}) {
my $user = getpwuid(POSIX::getuid());
$ENV{HOME} = (getpwnam($user))[7];
}
return $ENV{HOME};
}
##
# searchLib(basename, [extra_paths])
# basename: the base name of the library.
# extra_paths: a reference to an array, which contains extra folders in which to look for the library.
# Returns: the absolute path to the library, or undef if not found.
#
# Get the absolute path of a (static or shared) library.
#
# Example:
# searchLib("libfoo.so.1"); # Returns "/usr/lib/libfoo.so.1"
sub searchLib {
my ($basename, $extra_paths) = @_;
if ($extra_paths) {
foreach my $path (reverse(@{$extra_paths})) {
return "$path/$basename" if (-f "$path/$basename");
}
}
foreach my $path ('/usr/local/lib', '/lib', '/usr/lib') {
return "$path/$basename" if (-f "$path/$basename");
}
return undef;
}
##
# soname(lib)
# lib: a filename to a shared library.
# Returns: the soname.
#
# Get the soname of the specified shared library by reading
# the SONAME section of the shared library file.
sub soname {
my ($lib) = @_;
my ($r, $w);
if (open2($r, $w, 'objdump', '-p', $lib)) {
close $w;
my @lines = <$r>;
close $r;
my ($soname) = grep {/SONAME/} @lines;
$soname =~ s/.*?SONAME[ \t]+//;
$soname =~ s/\n//gs;
return $soname;
} else {
my ($soname) = $lib =~ /.*\/lib(.+)\.so/;
return $soname;
}
}
##
# run(args...)
# Returns: the command's exit code.
#
# Run a command with system().
sub run {
# split the first item in @_ into "words". The `printf ...`
# takes care of respecting ' and " quotes so we don't split a
# quoted string that contains whitespace. If $cmd itself
# contains \n, this will still go wrong.
my $cmd = shift @_;
my @words = `printf '%s\n' $cmd`;
chomp @words;
my $status = system(@words, @_);
return 127 if ($status == -1);
return $status / 256 if ($status != 0);
return 0;
}
sub parseDataFile {
my ($file, $r_hash) = @_;
%{$r_hash} = ();
return if (!open FILE, "< $file");
foreach (<FILE>) {
next if (/^#/);
s/[\r\n]//g;
next if (length($_) == 0);
my ($key, $value) = split / /, $_, 2;
$r_hash->{$key} = $value;
}
close FILE;
}
sub writeDataFile {
my ($file, $r_hash) = @_;
return if (!open FILE, "> $file");
foreach my $key (sort(keys %{$r_hash})) {
print FILE "$key $r_hash->{$key}\n";
}
close FILE;
}
1;
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