111 lines
2.1 KiB
Perl
Executable File
111 lines
2.1 KiB
Perl
Executable File
#! /usr/bin/env perl
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# ----------------------------------------------------------------------------
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# "THE BEER-WARE LICENSE" (Revision 42)
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# <tobez@FreeBSD.org> wrote this file. As long as you retain this notice you
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# can do whatever you want with this stuff. If we meet some day, and you think
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# this stuff is worth it, you can buy me a beer in return. Anton Berezin
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# ----------------------------------------------------------------------------
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use strict;
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use warnings;
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# good tests:
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# /usr/ports/archivers/zoo/files/patch-aa (context diff)
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# /usr/ports/astro/xplanet/files/patch-aa (unified with paths)
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my ($in,$fl,$abort,$state,$out);
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if (!@ARGV || $ARGV[0] =~ /^-/) {
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print STDERR "Usage:
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$0 patchfile ...
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"
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}
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while (@ARGV) {
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$in = shift;
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$state = \&nofile;
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if (open IN, "< $in") {
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$abort = 0;
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$out = "";
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$fl = "";
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while (<IN>) {
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$state->();
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last if $abort;
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}
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close IN;
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if ($out && !$abort) {
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print "Wrote $out\n";
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}
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} else {
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print STDERR "cannot open $in: $!\n";
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}
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}
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sub nofile
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{
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if (/^\*\*\*\s+/ && !/^\*\*\*\s+\d+,\d+\s+/) {
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$state = \&cstart;
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$fl = $_;
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} elsif (/^---\s+/ && !/^---\s+\d+,\d+\s+/) {
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$state = \&ustart;
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$fl = $_;
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}
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}
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sub cstart
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{
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if (!/^---\s+\d+,\d+\s+/ && /^---\s+(\S+)\s+/) {
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$state = \&body;
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$out = $1;
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$out =~ s|/|__|g;
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$out = "patch-$out";
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if (open OUT, "> $out") {
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print OUT $fl;
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print OUT $_;
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} else {
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print STDERR "Cannot create $out: $!, aborting\n";
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$abort = 1;
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}
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} else {
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print STDERR "Bad context diff in $in, aborting\n";
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$abort = 1;
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}
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}
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sub ustart
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{
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if (/^\+\+\+\s+(\S+)\s+/) {
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$state = \&body;
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$out = $1;
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$out =~ s|/|__|g;
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$out = "patch-$out";
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if (open OUT, "> $out") {
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print OUT $fl;
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print OUT $_;
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} else {
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print STDERR "Cannot create $out: $!, aborting\n";
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$abort = 1;
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}
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} else {
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print STDERR "Bad unified diff in $in, aborting\n";
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$abort = 1;
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}
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}
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sub body
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{
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if (/^\*\*\*\s+/ && !/^\*\*\*\s+\d+,\d+\s+/) {
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close OUT;
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print "Wrote $out\n";
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$state = \&cstart;
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$fl = $_;
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} elsif (/^---\s+/ && !/^---\s+\d+,\d+\s+/) {
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close OUT;
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print "Wrote $out\n";
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$state = \&ustart;
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$fl = $_;
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} else {
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print OUT $_;
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}
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}
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