diff options
Diffstat (limited to 'perl.req')
-rwxr-xr-x | perl.req | 234 |
1 files changed, 234 insertions, 0 deletions
diff --git a/perl.req b/perl.req new file mode 100755 index 0000000..400d49e --- /dev/null +++ b/perl.req @@ -0,0 +1,234 @@ +#!/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 (<>) { + chomp $_; + process_file($_) if -f $_; + } +} + + +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 ($file) = @_; + + open(FILE, "<$file") || return; + + while (<FILE>) { + + # skip the "= <<" block + + if ( ( m/^\s*\$(.*)\s*=\s*<<\s*["'](.*)['"]/i) || + ( m/^\s*\$(.*)\s*=\s*<<\s*(.*);/i) ) { + $tag = $2; + while (<FILE>) { + ( $_ =~ /^$tag/) && last; + } + } + + # 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 ; +} |