#!/usr/bin/perl -w
#
# Author: Petter Reinholdtsen <pere@td.org.uit.no>
# Date:   2001-08-04
# Source: http://www.student.uit.no/~pere/linux/
#
# Check .po files for consistency.  Write two files msg-all and
# msg-inconsistent.
#
# Usage: $0 <po-files>

#use strict;
use Getopt::Std;

getopt('a');

my ($pofile, %translation, @problem, %msgstrs, %files);

my $showfile = 1;

for $pofile ( @ARGV ) {
  open(POFILE, "<$pofile") || next;

  my ($next, $msgid, $msgstr);

  while (1) {
    $_ = $next || <POFILE>;
    last unless $_;
    $next = "";

    chomp;

    s/^\#.+$//; # Remove comments

    next if (/^\s*$/);

    if (/^msgid (\".+)/) {
      $msgid = $1;
      while (<POFILE>) {
        chomp;
        unless (/^\"/) {
          $next = $_;
          last;
        }
        $msgid .= $_;
        $msgid =~ s/\"\"//;
      }

      $msgstr = "";
      next;
    }

    if (/^msgstr (\".+)/) {
      $msgstr = $1;
      while (<POFILE>) {
        chomp;
        unless (/^\"/) {
          $next = $_;
          last;
        }
        $msgstr .= $_;
        $msgstr =~ s/\"\"//;
      }

      add_translation($pofile, $msgid, $msgstr);

      $msgid = "";
      $msgstr = "";
    }

  }
  close(POFILE);
}

sub add_translation {
  my ($pofile, $msgid, $msgstr) = @_;
#  print " Translation: $msgid = $msgstr\n";
  $msgstr = $1;
  $msgstrs{"$msgid\t$msgstr"}++;
  $files{"$msgid\t$msgstr"} = $pofile;
  if ( !defined($translation{$msgid}) ) {
    push(@{$translation{$msgid}}, $msgstr);
  } else {
    if ( ! in_array($msgstr, $translation{$msgid}) ) {
      push(@{$translation{$msgid}}, $msgstr);
      push(@problem, $msgid) unless grep($msgid, @problem);
    }
  }
  $msgid = "";
}

sub in_array ($$) {
  my ($str, $aref) = @_;
  my $test;
  for $test (@$aref) {
    return 1 if ($test eq $str);
  }
  return 0;
}

sub output_transl {
  my ($fp, $msgid) = @_;
  print $fp "\nmsgid $msgid\n";
  my $msgstr;
  for $msgstr (sort @{$translation{$msgid}}) {
    print $fp "msgstr $msgstr # (" . $msgstrs{"$msgid\t$msgstr"}. ") " or die;
    print $fp "[" . $files{"$msgid\t$msgstr"} . "]" or die if $showfile;
    print $fp "\n" or die;
  }
}

output();

# Remove leading space and '&' before comparing
sub kde_magic_sort {
  my $aa = $a;
  my $bb = $b;

  $aa =~ s/\&|^\s+//;
  $bb =~ s/\&|^\s+//;
  return lc($aa) cmp lc($bb);
}

sub output {
  my ($msgid);
  my ($count, $icount) = (0,0);
  if ($opt_a) {
      open (ALL, ">msg-all");
      print "Creating msg-all\n";
  }
  open (INCONS, ">msg-inconsistent");
  print "Creating msg-inconsistent\n";
  for $msgid (sort kde_magic_sort keys %translation ) {
      if ($opt_a) {
          output_transl(ALL, $msgid);
      }
      $count++;
      if ( 1 < scalar(@{$translation{$msgid}}) ) {
          $icount++;
          output_transl(INCONS, $msgid);
      }
  }
  print ALL "\n#Total # of messages: $count\n" if ($opt_a);
  print INCONS "\n#Total inconsistent: $icount of $count (",
      int(100*$icount/$count), "%)\n";

  close(INCONS);
  close(ALL)  if ($opt_a);
}