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-rwxr-xr-xscripts/makepkg-template.pl.in168
1 files changed, 168 insertions, 0 deletions
diff --git a/scripts/makepkg-template.pl.in b/scripts/makepkg-template.pl.in
new file mode 100755
index 00000000..1ba007bb
--- /dev/null
+++ b/scripts/makepkg-template.pl.in
@@ -0,0 +1,168 @@
+#!/usr/bin/perl
+use warnings;
+use strict;
+use v5.10.1;
+use Cwd qw(abs_path);
+use File::Spec;
+use Getopt::Long;
+use Pod::Usage;
+
+my %opts = (
+ input => '@BUILDSCRIPT@',
+ template_dir => '@TEMPLATE_DIR@',
+);
+
+my $template_name_charset = qr/[[:alnum:]+_.@-]/;
+my $template_marker = qr/# template/;
+
+sub burp {
+ my ($file_name, @lines) = @_;
+ open (my $fh, ">", $file_name) || die "can't create $file_name $!" ;
+ print $fh @lines;
+ close $fh;
+}
+
+# read a template marker line and parse values into a hash
+# format is "# template (start|input); key=value; key2=value2; ..."
+sub parse_template_line {
+ my ($line, $filename, $linenumber) = @_;
+ my %values;
+
+ my ($marker, @elements) = split(/;\s?/, $line);
+
+ ($values{command}) = ($marker =~ /$template_marker (.*)/);
+
+ foreach my $element (@elements) {
+ my ($key, $val) = ($element =~ /^([a-z0-9]+)=(.*)$/);
+ die "invalid key/value pair $filename:$linenumber: $line"
+ unless $key and $val;
+ $values{$key} = $val;
+ }
+
+ # end doesn't take arguments
+ if ($values{command} ne "end") {
+ if (!$values{name}) {
+ die "invalid template line: can't find template name\n",
+ "$filename:$linenumber: $line";
+ }
+
+ unless ($values{name} =~ /^$template_name_charset+$/) {
+ die "invalid chars used in name '$values{name}'. allowed: [:alnum:]+_.@-\n",
+ "$filename:$linenumber: $line";
+ }
+ }
+
+ return \%values;
+}
+
+# load a template, process possibly existing markers (nested templates)
+sub load_template {
+ my ($values) = @_;
+
+ my $ret = "";
+
+ my $path;
+ if (!$opts{newest} and $values->{version}) {
+ $path = "$opts{template_dir}/$values->{name}-$values->{version}.template";
+ } else {
+ $path = "$opts{template_dir}/$values->{name}.template";
+ }
+
+ # resolve symlink(s) and use the real file's name for version detection
+ my ($version) = (abs_path($path) =~ /-([0-9.]+)[.]template$/);
+
+ if (!$version) {
+ die "Couldn't detect version for template '$values->{name}'";
+ }
+
+ my $parsed = process_file($path);
+
+ $ret .= "# template start; name=$values->{name}; version=$version;\n";
+ $ret .= $parsed;
+ $ret .= "# template end;\n";
+ return $ret;
+}
+
+# process input file and load templates for all markers found
+sub process_file {
+ my ($filename) = @_;
+
+ my $ret = "";
+ my $nesting_level = 0;
+ my $linenumber = 0;
+
+ open (my $fh, "<", $filename) or die "failed to open '$filename': $!";
+ my @lines = <$fh>;
+ close $fh;
+
+ foreach my $line (@lines) {
+ $linenumber++;
+
+ if ($line =~ $template_marker) {
+ my $values = parse_template_line($line, $filename, $linenumber);
+
+ given ($values->{command}) {
+ when (['start', 'input']) {
+ if ($nesting_level == 0) {
+ $ret .= load_template($values);
+ }
+ }
+
+ when ('end') {
+ # nothing to do here, just for completeness
+ }
+
+ default {
+ die "Unknown template marker '$values->{command}'\n",
+ "$filename:$linenumber: $line";
+ }
+ }
+
+ $nesting_level++ if $values->{command} eq "start";
+ $nesting_level-- if $values->{command} eq "end";
+
+ # marker lines should never be added
+ next;
+ }
+
+ # we replace code inside blocks with the template
+ # so we ignore the content of the block
+ next if $nesting_level > 0;
+
+ $ret .= $line;
+ }
+ return $ret;
+}
+
+Getopt::Long::Configure ("bundling");
+GetOptions(
+ "help" => sub {pod2usage(-exitval => 0, -verbose => 1); },
+ "h" => sub {pod2usage(-exitval => 0, -verbose => 0); },
+ "input|p=s" => \$opts{input},
+ "output|o=s" => \$opts{output},
+ "newest|n" => \$opts{newest},
+ "template-dir=s" => \$opts{template_dir},
+) or pod2usage(1);
+
+$opts{output} = $opts{input} unless $opts{output};
+
+$opts{input} = "/dev/stdin" if $opts{input} eq "-";
+$opts{output} = "/dev/stdout" if $opts{output} eq "-";
+
+burp($opts{output}, process_file($opts{input}));
+
+__END__
+=head1 SYNOPSIS
+
+makepkg-template [options]
+
+ Options:
+ --input, -p <file> Build script to read (default: @BUILDSCRIPT@)
+ --output, -o <file> file to output to (default: input file)
+ --newest, -n update templates to newest version
+ (default: use specified version in the template markers)
+ --template-dir <dir> directory to search for templates
+ (default: @TEMPLATE_DIR@)
+
+=cut
+# vim: set noet: