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#!/usr/bin/perl
# a simple makedepends like script for perl.
# 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
# it would be much better if perl could tell us the dependencies of a
# given script.
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 {
print "perl($module)>=$require{$module}\n";
# we need to print it without the version number until the
# requires syntax accepts version numbers correctly.
print "perl($module)\n";
}
}
exit 0;
sub process_file {
my ($file) = @_;
chomp $file;
open(FILE, "<$file")||
die("Could not open file: '$file' : $!\n");
while (<FILE>) {
# skip the documentation
if ( (m/^=(head1|head2|pod)/) .. (m/^=(cut)/) ) {
next;
}
# skip the data section
if (m/^__(DATA|END)__$/) {
last;
}
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 $^S; # If error/warning during compilation,
(m/^\s* # we hope the inclusion starts the line
(do|require|use)\s+(?!\{) # do not want 'do {' loops
# quotes around name are always legal
[\'\"]?([^\;\ \'\"\t]*)[\'\"]?[\t\;\ ]
# the syntax for 'use' allows version requirements
\s*([.0-9]*)
/x)
) {
my ($module, $version) = ($2,$3);
# if there is some interpolation of variables just skip this
# dependency, we do not want
# do "$ENV{LOGDIR}/$rcfile";
($module =~ m/\$/) && next;
# 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;
# 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
($module =~ m/\.ph$/) && ($module =~ s!.*/!!g );
$require{$module}=$version;
$line{$module}=$_;
}
}
}
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