redhat-rpm-config/perl.req
2002-06-12 12:59:50 +00:00

225 lines
6.2 KiB
Perl
Executable File

#!/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 alternatively 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 makedepends like script for perl.
# To save development time I do not parse the perl grammmar 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 dependencies 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 strings in the file which match the pattern
# m/^\s*\$RPM_Requires\s*=\s*["'](.*)['"]/i
# then these are treated as additional names which are required 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 arround my
# operators. Also I will need to change the processing of the
# $RPM_* vairable when I upgrage.
print "perl($module) >= $require{$module}\n";
}
}
exit 0;
sub process_file {
my ($file) = @_;
chomp $file;
open(FILE, "<$file") || return;
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/^=(head1|head2|pod|item)/) .. (m/^=(cut)/) ) {
next;
}
if ( (m/^=(over)/) .. (m/^=(back)/) ) {
next;
}
# skip the data section
if (m/^__(DATA|END)__$/) {
last;
}
# 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*\$RPM_Requires\s*=\s*["'](.*)['"]/i) {
foreach $_ (split(/\s+/, $1)) {
print "$_\n";
}
}
if (
# ouch could be in a eval, perhaps we do not want these since we catch
# an exception they must not be required
# eval { require Term::ReadLine } or die $@;
# eval "require Term::Rendezvous;" or die $@;
# eval { require Carp } if defined $^S; # If error/warning during compilation,
(m/^(\s*) # we hope the inclusion starts the line
(require|use)\s+(?!\{) # do not want 'do {' loops
# quotes around name are always legal
[\'\"]?([^\;\ \'\"\t]*)[\'\"]?[\t\;\ ]
# the syntax for 'use' allows version requirements
\s*([.0-9]*)
/x)
) {
my ($whitespace, $statement, $module, $version) = ($1, $2, $3,$4);
# we only consider require statements that are flush against
# the left edge. any other require statements give too many
# false positives, as they are usually inside of an if statement
# as a fallback module or a rarely used option
($whitespace ne "" && $statement eq "require") && next;
# if there is some interpolation of variables just skip this
# dependency, we do not want
# do "$ENV{LOGDIR}/$rcfile";
($module =~ m/\$/) && next;
# skip if the phrase was "use of" -- shows up in gimp-perl, et al
next if $module eq 'of';
# if the module ends in a comma we probaly caught some
# documentation of the form 'check stuff,\n do stuff, clean
# stuff.' there are several of these in the perl distribution
($module =~ m/[,>]$/) && next;
# if the module name starts in a dot it is not a module name.
# Is this necessary? Please give me an example if you turn this
# back on.
# ($module =~ m/^\./) && next;
# if the module ends with .pm strip it to leave only basename.
# starts with /, which means its an absolute path to a file
if ($module =~ m(^/)) {
print "$module\n";
next;
}
# sometimes people do use POSIX qw(foo), or use POSIX(qw(foo)) etc
# we can strip qw.*$, as well as (.*$:
$module =~ s/qw.*$//;
$module =~ s/\(*$//;
$module =~ s/\.pm$//;
# some perl programmers write 'require URI/URL;' when
# they mean 'require URI::URL;'
$module =~ s/\//::/;
# trim off trailing parenthesis if any. Sometimes people pass
# the module an empty list.
$module =~ s/\(\s*\)$//;
if ( $module =~ m/^[0-9._]+$/ ) {
# if module is a number then both require and use interpret that
# to mean that a particular version of perl is specified
if ($module =~ /5.00/) {
print "perl >= 0:$module\n";
next;
}
else {
print "perl >= 1:$module\n";
next;
}
};
# ph files do not use the package name inside the file.
# perlmodlib documentation says:
# the .ph files made by h2ph will probably end up as
# extension modules made by h2xs.
# so do not expend much effort on these.
# there is no easy way to find out if a file named systeminfo.ph
# will be included with the name sys/systeminfo.ph so only use the
# basename of *.ph files
($module =~ m/\.ph$/) && next;
$require{$module}=$version;
$line{$module}=$_;
}
}
close(FILE) ||
die("$0: Could not close file: '$file' : $!\n");
return ;
}