#!/usr/bin/perl
#
# sanitize-profile - Remove items from a KiCad profile that may cause an upset
#
# Written 2010 by Werner Almesberger
# Copyright 2010 Werner Almesberger
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#


@LIBS = ("/usr/share/kicad/library", "/usr/local/share/kicad/library");


sub rewrite
{
    local ($s) = @_;

    return $s if $section ne "eeschema/libraries";
    return $s unless /^LibName(\d+)=(.*)\s*$/;
    my $lib = $2;
    delete $add{$lib};
    if ($1 == $in_lib) {
	$in_lib++;
    } else {
	print STDERR "LibName$1 when expecting LibName$in_lib. Renumbering.\n";
	$in_lib = $1+1;
    }
    $out_lib++;
    my $var = "LibName$out_lib";
    if ($lib =~ /\//) {
	return "$var=$lib\n" if -r "$lib.lib";
    }
    for (".", $libdir, @LIBS) {
	return "$var=$lib\n" if -r "$_/$lib.lib";
    }
    print STDERR "cannot find $lib\n";
    $out_lib--;
    return undef;
}


sub complement
{
    for (sort keys %add) {
	print STDERR "adding $_\n";
	$out_lib++;
	push(@f, "LibName$out_lib=$_\n");
	delete $add{$_};
    }
}


sub usage
{
    print STDERR "usage: $0 file.pro [outfile]\n";
    exit(1);
}


for (split(",", $ENV{"SCHHIST_ADDLIBS"})) {
    $add{$_} = 1 if $_ ne "";
}

($file, $out) = @ARGV;
&usage if $#ARGV > 1;

($dir = $file) =~ s|.*/||;
$dir = "." if $dir eq "";

open(FILE, $file) || die "$file: $!";
while (<FILE>) {
    if (/^\[(\S+)\]/) {
	if ($1 eq "eeschema/libraries") {
	    $in_lib = 1;
	    $out_lib = 0;
	} else {
	    &complement if $section eq "eeschema/libraries";
	}
	$section = $1;
    }
    if ($section eq "eeschema") {
	$libdir = $1 if /^LibDir=(.*)\s*$/;
    }
    $s = &rewrite($_);
    push(@f, $s) if defined $s;
}
close FILE;
&complement;

if (!defined $out) {
    rename($file, "$file.bak");
    $out= $file;
}

open(FILE, ">$out") || die "$out: $!";
print FILE join("", @f) || die "$out: $!";
close FILE || die "$out: $!";