/usr/lib/rpm/perl.prov is in rpm 4.12.0.2+dfsg1-2.
This file is owned by root:root, with mode 0o755.
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 | #!/usr/bin/perl
# RPM (and it's source code) is covered under two separate licenses.
# The entire code base may be distributed under the terms of the GNU
# General Public License (GPL), which appears immediately below.
# Alternatively, all of the source code in the lib subdirectory of the
# RPM source code distribution as well as any code derived from that
# code may instead be distributed under the GNU Library General Public
# License (LGPL), at the choice of the distributor. The complete text
# of the LGPL appears at the bottom of this file.
# This alternative is allowed to enable applications to be linked
# against the RPM library (commonly called librpm) without forcing
# such applications to be distributed under the GPL.
# Any questions regarding the licensing of RPM should be addressed to
# Erik Troan <ewt@redhat.com>.
# a simple script to print the proper name for perl libraries.
# To save development time I do not parse the perl grammar but
# instead just lex it looking for what I want. I take special care to
# ignore comments and pod's.
# it would be much better if perl could tell us the proper name of a
# given script.
# The filenames to scan are either passed on the command line or if
# that is empty they are passed via stdin.
# If there are lines in the file which match the pattern
# (m/^\s*\$VERSION\s*=\s+/)
# then these are taken to be the version numbers of the modules.
# Special care is taken with a few known idioms for specifying version
# numbers of files under rcs/cvs control.
# If there are strings in the file which match the pattern
# m/^\s*\$RPM_Provides\s*=\s*["'](.*)['"]/i
# then these are treated as additional names which are provided by the
# file and are printed as well.
# I plan to rewrite this in C so that perl is not required by RPM at
# build time.
# by Ken Estes Mail.com kestes@staff.mail.com
if ("@ARGV") {
foreach (@ARGV) {
process_file($_);
}
} else {
# notice we are passed a list of filenames NOT as common in unix the
# contents of the file.
foreach (<>) {
process_file($_);
}
}
foreach $module (sort keys %require) {
if (length($require{$module}) == 0) {
print "perl($module)\n";
} else {
# I am not using rpm3.0 so I do not want spaces around my
# operators. Also I will need to change the processing of the
# $RPM_* variable when I upgrade.
print "perl($module) = $require{$module}\n";
}
}
exit 0;
sub process_file {
my ($file) = @_;
chomp $file;
if (!open(FILE, $file)) {
warn("$0: Warning: Could not open file '$file' for reading: $!\n");
return;
}
my ($package, $version, $incomment, $inover) = ();
while (<FILE>) {
# skip the documentation
# we should not need to have item in this if statement (it
# properly belongs in the over/back section) but people do not
# read the perldoc.
if (m/^=(head[1-4]|pod|for|item)/) {
$incomment = 1;
}
if (m/^=(cut)/) {
$incomment = 0;
$inover = 0;
}
if (m/^=(over)/) {
$inover = 1;
}
if (m/^=(back)/) {
$inover = 0;
}
if ($incomment || $inover) {
next;
}
# skip the data section
if (m/^__(DATA|END)__$/) {
last;
}
# not everyone puts the package name of the file as the first
# package name so we report all namespaces except some common
# false positives as if they were provided packages (really ugly).
if (m/^\s*package\s+([_:a-zA-Z0-9]+)\s*;/) {
$package = $1;
undef $version;
if ($package eq 'main') {
undef $package;
} else {
# If $package already exists in the $require hash, it means
# the package definition is broken up over multiple blocks.
# In that case, don't stomp a previous $VERSION we might have
# found. (See BZ#214496.)
$require{$package} = undef unless (exists $require{$package});
}
}
# after we found the package name take the first assignment to
# $VERSION as the version number. Exporter requires that the
# variable be called VERSION so we are safe.
# here are examples of VERSION lines from the perl distribution
#FindBin.pm:$VERSION = $VERSION = sprintf("%d.%02d", q$Revision: 1.9 $ =~ /(\d+)\.(\d+)/);
#ExtUtils/Install.pm:$VERSION = substr q$Revision: 1.9 $, 10;
#CGI/Apache.pm:$VERSION = (qw$Revision: 1.9 $)[1];
#DynaLoader.pm:$VERSION = $VERSION = "1.03"; # avoid typo warning
#General.pm:$Config::General::VERSION = 2.33;
#
# or with the new "our" pragma you could (read will) see:
#
# our $VERSION = '1.00'
if ($package && m/^\s*(our\s+)?\$(\Q$package\E::)?VERSION\s*=\s+/) {
# first see if the version string contains the string
# '$Revision' this often causes bizarre strings and is the most
# common method of non static numbering.
if (m/\$Revision: (\d+[.0-9]+)/) {
$version = $1;
} elsif (m/['"]?(\d+[.0-9]+)['"]?/) {
# look for a static number hard coded in the script
$version = $1;
}
$require{$package} = $version;
}
# Allow someone to have a variable that defines virtual packages
# The variable is called $RPM_Provides. It must be scoped with
# "our", but not "local" or "my" (just would not make sense).
#
# For instance:
#
# $RPM_Provides = "blah bleah"
#
# Will generate provides for "blah" and "bleah".
#
# Each keyword can appear multiple times. Don't
# bother with datastructures to store these strings,
# if we need to print it print it now.
if (m/^\s*(our\s+)?\$RPM_Provides\s*=\s*["'](.*)['"]/i) {
foreach $_ (split(/\s+/, $2)) {
print "$_\n";
}
}
}
close(FILE) ||
die("$0: Could not close file: '$file' : $!\n");
return;
}
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