225 lines
6.2 KiB
Plaintext
225 lines
6.2 KiB
Plaintext
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#!/usr/bin/perl
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# RPM (and it's source code) is covered under two separate licenses.
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# The entire code base may be distributed under the terms of the GNU
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# General Public License (GPL), which appears immediately below.
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# Alternatively, all of the source code in the lib subdirectory of the
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# RPM source code distribution as well as any code derived from that
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# code may instead be distributed under the GNU Library General Public
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# License (LGPL), at the choice of the distributor. The complete text
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# of the LGPL appears at the bottom of this file.
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# This alternatively is allowed to enable applications to be linked
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# against the RPM library (commonly called librpm) without forcing
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# such applications to be distributed under the GPL.
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# Any questions regarding the licensing of RPM should be addressed to
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# Erik Troan <ewt@redhat.com>.
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# a simple makedepends like script for perl.
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# To save development time I do not parse the perl grammmar but
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# instead just lex it looking for what I want. I take special care to
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# ignore comments and pod's.
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# It would be much better if perl could tell us the dependencies of a
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# given script.
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# The filenames to scan are either passed on the command line or if
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# that is empty they are passed via stdin.
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# If there are strings in the file which match the pattern
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# m/^\s*\$RPM_Requires\s*=\s*["'](.*)['"]/i
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# then these are treated as additional names which are required by the
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# file and are printed as well.
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# I plan to rewrite this in C so that perl is not required by RPM at
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# build time.
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# by Ken Estes Mail.com kestes@staff.mail.com
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if ("@ARGV") {
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foreach (@ARGV) {
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process_file($_);
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}
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} else {
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# notice we are passed a list of filenames NOT as common in unix the
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# contents of the file.
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foreach (<>) {
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process_file($_);
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}
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}
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foreach $module (sort keys %require) {
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if (length($require{$module}) == 0) {
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print "perl($module)\n";
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} else {
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# I am not using rpm3.0 so I do not want spaces arround my
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# operators. Also I will need to change the processing of the
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# $RPM_* vairable when I upgrage.
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print "perl($module) >= $require{$module}\n";
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}
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}
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exit 0;
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sub process_file {
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my ($file) = @_;
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chomp $file;
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open(FILE, "<$file") || return;
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while (<FILE>) {
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# skip the documentation
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# we should not need to have item in this if statement (it
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# properly belongs in the over/back section) but people do not
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# read the perldoc.
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if ( (m/^=(head1|head2|pod|item)/) .. (m/^=(cut)/) ) {
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next;
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}
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if ( (m/^=(over)/) .. (m/^=(back)/) ) {
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next;
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}
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# skip the data section
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if (m/^__(DATA|END)__$/) {
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last;
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}
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# Each keyword can appear multiple times. Don't
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# bother with datastructures to store these strings,
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# if we need to print it print it now.
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if ( m/^\s*\$RPM_Requires\s*=\s*["'](.*)['"]/i) {
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foreach $_ (split(/\s+/, $1)) {
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print "$_\n";
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}
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}
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if (
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# ouch could be in a eval, perhaps we do not want these since we catch
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# an exception they must not be required
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# eval { require Term::ReadLine } or die $@;
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# eval "require Term::Rendezvous;" or die $@;
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# eval { require Carp } if defined $^S; # If error/warning during compilation,
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(m/^(\s*) # we hope the inclusion starts the line
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(require|use)\s+(?!\{) # do not want 'do {' loops
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# quotes around name are always legal
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[\'\"]?([^\;\ \'\"\t]*)[\'\"]?[\t\;\ ]
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# the syntax for 'use' allows version requirements
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\s*([.0-9]*)
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/x)
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) {
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my ($whitespace, $statement, $module, $version) = ($1, $2, $3,$4);
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# we only consider require statements that are flush against
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# the left edge. any other require statements give too many
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# false positives, as they are usually inside of an if statement
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# as a fallback module or a rarely used option
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($whitespace ne "" && $statement eq "require") && next;
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# if there is some interpolation of variables just skip this
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# dependency, we do not want
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# do "$ENV{LOGDIR}/$rcfile";
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($module =~ m/\$/) && next;
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# skip if the phrase was "use of" -- shows up in gimp-perl, et al
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next if $module eq 'of';
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# if the module ends in a comma we probaly caught some
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# documentation of the form 'check stuff,\n do stuff, clean
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# stuff.' there are several of these in the perl distribution
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($module =~ m/[,>]$/) && next;
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# if the module name starts in a dot it is not a module name.
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# Is this necessary? Please give me an example if you turn this
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# back on.
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# ($module =~ m/^\./) && next;
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# if the module ends with .pm strip it to leave only basename.
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# starts with /, which means its an absolute path to a file
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if ($module =~ m(^/)) {
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print "$module\n";
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next;
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}
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# sometimes people do use POSIX qw(foo), or use POSIX(qw(foo)) etc
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# we can strip qw.*$, as well as (.*$:
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$module =~ s/qw.*$//;
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$module =~ s/\(*$//;
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$module =~ s/\.pm$//;
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# some perl programmers write 'require URI/URL;' when
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# they mean 'require URI::URL;'
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$module =~ s/\//::/;
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# trim off trailing parenthesis if any. Sometimes people pass
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# the module an empty list.
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$module =~ s/\(\s*\)$//;
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if ( $module =~ m/^[0-9._]+$/ ) {
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# if module is a number then both require and use interpret that
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# to mean that a particular version of perl is specified
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if ($module =~ /5.00/) {
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print "perl >= 0:$module\n";
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next;
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}
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else {
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print "perl >= 1:$module\n";
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next;
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}
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};
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# ph files do not use the package name inside the file.
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# perlmodlib documentation says:
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# the .ph files made by h2ph will probably end up as
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# extension modules made by h2xs.
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# so do not expend much effort on these.
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# there is no easy way to find out if a file named systeminfo.ph
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# will be included with the name sys/systeminfo.ph so only use the
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# basename of *.ph files
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($module =~ m/\.ph$/) && next;
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$require{$module}=$version;
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$line{$module}=$_;
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}
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}
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close(FILE) ||
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die("$0: Could not close file: '$file' : $!\n");
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return ;
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}
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