+++ /dev/null
-#!/usr/bin/perl -w
-
-#
-# Guards:
-#
-# +xxx include if xxx is defined
-# -xxx exclude if xxx is defined
-# +!xxx include if xxx is not defined
-# -!xxx exclude if xxx is not defined
-#
-
-use FileHandle;
-use Getopt::Long;
-use strict;
-
-# Prototypes
-sub files_in($$);
-sub parse($$);
-sub help();
-
-#sub strip_ext($) {
-# local ($_) = @_;
-# s/\.(diff?|patch)$//;
-#}
-
-#sub try_ext($) {
-# my ($path) = @_;
-# for my $p in (($path, "$path.diff", "$path.dif", "$path.patch")) {
-# return $p
-# if (-f $p);
-# }
-# return undef;
-#}
-
-sub slashme($) {
- my ($dir) = @_;
- $dir =~ s#([^/])$#$&/#; # append a slash if necessary
- if ($dir eq './') {
- return '';
- } else {
- return $dir;
- }
-}
-
-# Generate a list of files in a directory
-#
-sub files_in($$) {
- my ($dir, $path) = @_;
- my $dh = new FileHandle;
- my (@files, $file);
-
-
- opendir $dh, length("$dir$path") ? "$dir$path" : '.'
- or die "$dir$path: $!\n";
- while ($file = readdir($dh)) {
- next if $file =~ /^(\.|\.\.|\.#.*|CVS|.*~)$/;
- if (-d "$dir$path$file") {
- @files = (@files, files_in($dir, "$path$file/"));
- } else {
- #print "[$path$file]\n";
- push @files, "$path$file";
- }
- }
- closedir $dh;
- return @files;
-}
-
-# Parse a configuration file
-# Callback called with ($patch, @guards) arguments
-#
-sub parse($$) {
- my ($fh, $callback) = @_;
-
- my $line = "";
-
- while (<$fh>) {
- chomp;
- s/(^|\s+)#.*//;
- if (s/\\$/ /) {
- $line .= $_;
- next;
- }
- $line .= $_;
- my @guards = ();
- foreach my $token (split /[\s\t\n]+/, $line) {
- next if $token eq "";
- if ($token =~ /^[-+]/) {
- push @guards, $token;
- } else {
- #print "[" . join(",", @guards) . "] $token\n";
- &$callback($token, @guards);
- }
- }
- $line = "";
- }
-}
-
-# Command line options
-#
-my ($dir, $config, $default, $check, $list, $invert_match, $with_guards) =
- ( '', '-', 1, 0, 0, 0, 0);
-my @path;
-
-# Help text
-#
-sub help() {
- print "$0 - select from a list of files guarded by conditions\n";
- print "SYNOPSIS: $0 [--prefix=dir] [--path=dir1:dir2:...]\n" .
- " [--default=0|1] [--check|--list] [--invert-match]\n" .
- " [--with-guards] [--config=file] symbol ...\n\n" .
- " (Default values: --path='" . join(':', @path) . "', " .
- "--default=$default)\n";
- exit 0;
-}
-
-# Parse command line options
-#
-Getopt::Long::Configure ("bundling");
-eval {
- unless (GetOptions (
- 'd|prefix=s' => \$dir,
- 'c|config=s' => \$config,
- 'C|check' => \$check,
- 'l|list' => \$list,
- 'w|with-guards' => \$with_guards,
- 'p|path=s' => \@path,
- 'D|default=i' => \$default,
- 'v|invert-match' => \$invert_match,
- 'h|help' => sub { help(); exit 0; })) {
- help();
- exit 1;
- }
-};
-if ($@) {
- print "$@";
- help();
- exit 1;
-}
-
-@path = ('.')
- unless (@path);
-@path = split(/:/, join(':', @path));
-
-my $fh = ($config eq '-') ? \*STDIN : new FileHandle($config)
- or die "$config: $!\n";
-
-$dir = slashme($dir);
-
-if ($check) {
- # Check for duplicate files, or for files that are not referenced by
- # the specification.
-
- my $problems = 0;
- my @files;
-
- foreach (@path) {
- @files = (@files, files_in($dir, slashme($_)));
- }
- my %files = map { $_ => 0 } @files;
-
- parse($fh, sub {
- my ($patch, @guards) = @_;
- if (exists $files{$patch}) {
- $files{$patch}++;
- } else {
- print "Not found: $dir$patch\n";
- $problems++;
- }});
-
- $fh->close();
-
- my ($file, $ref);
- while (($file, $ref) = each %files) {
- next if $ref == 1;
-
- if ($ref == 0) {
- print "Unused: $file\n" if $ref == 0;
- $problems++;
- }
- if ($ref > 1) {
- print "Warning: multiple uses: $file\n" if $ref > 1;
- # This is not an error if the entries are mutually exclusive...
- }
- }
- exit $problems ? 1 : 0;
-
-} elsif ($list) {
- parse($fh, sub {
- my ($patch, @guards) = @_;
- print join(' ', @guards), ' '
- if (@guards && $with_guards);
- print "$dir$patch\n";
- });
-} else {
- # Generate a list of patches to apply.
-
- my %symbols = map { $_ => 1 } @ARGV;
-
- parse($fh, sub {
- my ($patch, @guards) = @_;
-
- my $selected;
- if (@guards) {
- # If the first guard is -xxx, the patch is included by default;
- # if it is +xxx, the patch is excluded by default.
- $selected = ($guards[0] =~ /^-/);
-
- foreach (@guards) {
- /^([-+])(!?)(.*)?/
- or die "Bad guard '$_'\n";
-
- # Check if the guard matches
- if (($2 eq '!' && !exists $symbols{$3}) ||
- ($2 eq '' && ( $3 eq '' || exists $symbols{$3}))) {
- # Include or exclude
- $selected = ($1 eq '+');
- }
- }
- } else {
- # If there are no guards, use the specified default result.
- $selected = $default;
- }
-
- print "$dir$patch\n"
- if $selected ^ $invert_match;
- });
-
- $fh->close();
-
- exit 0;
-}
-
-__END__
-
-=head1 NAME
-
-guards - select from a list of files guarded by conditions
-
-=head1 SYNOPSIS
-
-F<guards> [--prefix=F<dir>] [--path=F<dir1:dir2:...>] [--default=<0|1>]
- [--check|--list] [--invert-match] [--with-guards] [--config=<file>]
- I<symbol> ...
-
-
-=head1 DESCRIPTION
-
-The script reads a configuration file that may contain so-called guards, file
-names, and comments, and writes those file names that satisfy all guards to
-standard output. The script takes a list of symbols as its arguments. Each line
-in the configuration file is processed separately. Lines may start with a
-number of guards. The following guards are defined:
-
-=over
-
-+I<xxx> Include the file(s) on this line if the symbol I<xxx> is defined.
-
--I<xxx> Exclude the file(s) on this line if the symbol I<xxx> is defined.
-
-+!I<xxx> Include the file(s) on this line if the symbol I<xxx> is not defined.
-
--!I<xxx> Exclude the file(s) on this line if the symbol I<xxx> is not defined.
-
-- Exclude this file. Used to avoid spurious I<--check> messages.
-
-=back
-
-The guards are processed left to right. The last guard that matches determines
-if the file is included. If no guard is specified, the I<--default>
-setting determines if the file is included.
-
-If no configuration file is specified, the script reads from standard input.
-
-The I<--check> option is used to compare the specification file against the
-file system. If files are referenced in the specification that do not exist, or
-if files are not enlisted in the specification file warnings are printed. The
-I<--path> option can be used to specify which directory or directories to scan.
-Multiple directories are eparated by a colon (C<:>) character. The
-I<--prefix> option specifies the location of the files.
-
-Use I<--list> to list all files independend of any rules. Use I<--invert-match>
-to list only the excluded patches. Use I<--with-guards> to also include all
-inclusion and exclusion rules.
-
-=head1 AUTHOR
-
-Andreas Gruenbacher <agruen@suse.de>, SUSE Labs
projects / people / pmueller / ipfire-2.x.git / blobdiff