#!/usr/bin/perl
#
# 展開スクリプト
#                           Version 1.00
# Copyright (c) 1999 by Irao.
#                   All rights reserved.
#

open FH, "ir-impng.dat";
binmode FH;
@n = <FH>;
close FH;

my ($clr, $clg, $clb) = (-1, 0, 0);
if ($ARGV[0]) {
    ($clr, $clg, $clb) = &get_color_code($ARGV[0]);
}

foreach (split ">:>", join "", @n) {
    if (s/^([0-9a-fA-F]{4})//) {
        open FO, ">\L$1.png";
        binmode FO;
        $_ = &change_fore_color($_, $clr, $clg, $clb) if ($clr != -1);
        print FO $_;
        close FO;
    }
}

sub get_color_code {
    my ($col) = @_;
    $col =~ tr/#/x/;
    if ($col =~ /^[a-zA-Z]+$/o) {
        my %color_table = (
            'aliceblue' => 'xf0f8ff', 'antiquewhite' => 'xfaebd7',
            'aqua' => 'x00ffff', 'aquamarine' => 'x7fffd4',
            'azure' => 'xf0ffff', 'beige' => 'xf5f5dc',
            'bisque' => 'xffe4c4', 'black' => 'x000000',
            'blanchedalmond' => 'xffebcd', 'blue' => 'x0000ff',
            'blueviolet' => 'x8a2be2', 'brown' => 'xa52a2a',
            'burlywood' => 'xdeb887', 'cadetblue' => 'x5f9ea0',
            'chartreuse' => 'x7fff00', 'chocolate' => 'xd2691e',
            'coral' => 'xff7f50', 'cornflowerblue' => 'x6495ed',
            'cornsilk' => 'xfff8dc', 'crimson' => 'xdc143c',
            'cyan' => 'x00ffff', 'darkblue' => 'x00008b',
            'darkcyan' => 'x008b8b', 'darkgoldenrod' => 'xb8860b',
            'darkgray' => 'xa9a9a9', 'darkgreen' => 'x006400',
            'darkkhaki' => 'xbdb76b', 'darkmagenta' => 'x8b008b',
            'darkolivegreen' => 'x556b2f', 'darkorange' => 'xff8c00',
            'darkorchid' => 'x9932cc', 'darkred' => 'x8b0000',
            'darksalmon' => 'xe9967a', 'darkseagreen' => 'x8fbc8f',
            'darkslateblue' => 'x483d8b', 'darkslategray' => 'x2f4f4f',
            'darkturquoise' => 'x00ced1', 'darkviolet' => 'x9400d3',
            'deeppink' => 'xff1493', 'deepskyblue' => 'x00bfff',
            'dimgray' => 'x696969', 'dodgerblue' => 'x1e90ff',
            'firebrick' => 'xb22222', 'floralwhite' => 'xfffaf0',
            'forestgreen' => 'x228b22', 'fuchsia' => 'xff00ff',
            'gainsboro' => 'xdcdcdc', 'ghostwhite' => 'xf8f8ff',
            'gold' => 'xffd700', 'goldenrod' => 'xdaa520',
            'gray' => 'x808080', 'green' => 'x008000',
            'greenyellow' => 'xadff2f', 'honeydew' => 'xf0fff0',
            'hotpink' => 'xff69b4', 'indianred' => 'xcd5c5c',
            'indigo' => 'x4b0082', 'ivory' => 'xfffff0',
            'khaki' => 'xf0e68c', 'lavender' => 'xe6e6fa',
            'lavenderblush' => 'xfff0f5', 'lawngreen' => 'x7cfc00',
            'lemonchiffon' => 'xfffacd', 'lightblue' => 'xadd8e6',
            'lightcoral' => 'xf08080', 'lightcoral' => 'xe0ffff',
            'lightgoldenrodyellow' => 'xfafad2', 'lightgreen' => 'x90ee90',
            'lightgrey' => 'xd3d3d3', 'lightpink' => 'xffb6c1',
            'lightsalmon' => 'xffa07a', 'lightseagreen' => 'x20b2aa',
            'lightskyblue' => 'x87cefa', 'lightslategray' => 'x778899',
            'lightsteelblue' => 'xb0c4de', 'lime' => 'x00ff00',
            'limegreen' => 'x32cd32', 'linen' => 'xfaf0e6',
            'magenta' => 'xff00ff', 'maroon' => 'x800000',
            'mediumaquamarine' => 'x66cdaa', 'mediumblue' => 'x0000cd',
            'mediumorchid' => 'xba55d3', 'mediumpurple' => 'x9370db',
            'mediumseagreen' => 'x3cb371', 'mediumslateblue' => 'x7b68ee',
            'mediumspringgreen' => 'x00fa9a', 'mediumturquoise' => 'x48d1cc',
            'mediumvioletred' => 'xc71585', 'midnightblue' => 'x191970',
            'mintcream' => 'xf5fffa', 'mistyrose' => 'xffe4e1',
            'moccasin' => 'xffe4b5', 'navajowhite' => 'xffdead',
            'navy' => 'x000080', 'oldlace' => 'xfdf5e6',
            'olive' => 'x808000', 'olivedrab' => 'x6b8e23',
            'orange' => 'xffa500', 'orangered' => 'xff4500',
            'orchid' => 'xda70d6', 'palegoldenrod' => 'xeee8aa',
            'palegreen' => 'x98fb98', 'paleturquoise' => 'xafeeee',
            'palevioletred' => 'xdb7093', 'papayawhip' => 'xffefd5',
            'peachpuff' => 'xffdab9', 'peru' => 'xcd853f',
            'pink' => 'xffc0cb', 'plum' => 'xdda0dd',
            'powderblue' => 'xb0e0e6', 'purple' => 'x800080',
            'red' => 'xff0000', 'rosybrown' => 'xbc8f8f',
            'royalblue' => 'x4169e1', 'saddlebrown' => 'x8b4513',
            'salmon' => 'xfa8072', 'sandybrown' => 'xf4a460',
            'seagreen' => 'x2e8b57', 'seashell' => 'xfff5ee',
            'sienna' => 'xa0522d', 'silver' => 'xc0c0c0',
            'skyblue' => 'x87ceeb', 'slateblue' => 'x6a5acd',
            'slategray' => 'x708090', 'snow' => 'xfffafa',
            'springgreen' => 'x00ff7f', 'steelblue' => 'x4682b4',
            'tan' => 'xd2b48c', 'teal' => 'x008080',
            'thistle' => 'xd8bfd8', 'tomato' => 'xff6347',
            'turquoise' => 'x40e0d0', 'violet' => 'xee82ee',
            'wheat' => 'xf5deb3', 'white' => 'xffffff',
            'whitesmoke' => 'xf5f5f5', 'yellow' => 'xffff00',
            'yellowgreen' => 'x9acd32', 'whitemist' => 'xf0f8ff'
        );
        $col =~ tr/A-Z/a-z/;
        $col = $color_table{$col};
    }
    my ($col_r, $col_g, $col_b);

    if ($col =~ /^(x|#|%(25)?23)[0-9a-fA-F]{6}$/o) {
        $col =~ /([0-9a-fA-F]{2})([0-9a-fA-F]{2})([0-9a-fA-F]{2})/o;
        $col_r = $1;
        $col_g = $2;
        $col_b = $3;
    }
    return ($col_r, $col_g, $col_b);
}

sub png_pal {
    my ($type, $c1, $c2, $crc, $col_r, $col_g, $col_b) = @_;
    if ($c1 eq "\x00\x00\x00") {
        $c1 = pack("C*", hex $col_r, hex $col_g, hex $col_b);
    } else {
        $c2 = pack("C*", hex $col_r, hex $col_g, hex $col_b);
    }
    $crc = &crc32("$type$c1$c2");
    $crc = pack "N", $crc;
    $crc = ~$crc;
    return ("$c1$c2$crc");
}

sub change_fore_color {
    my ($data, $r, $g, $b) = @_;
    my ($p, $a1, $a2, $a3);
    if ($data =~ /^\x89PNG/o) {
        $data =~ m/(PLTE)/gio;
        $p = pos($data);
        $a1 = substr($data, $p, 3);
        $a2 = substr($data, $p+3, 3);
        $a3 = substr($data, $p+6, 4);
        substr ($data, $p, 10) = &png_pal($1, $a1, $a2, $a3, $r, $g, $b);
    }
    return ($data);
}

sub crc32 {
    my ($arg) = @_;
    my (@crc_table) =(
             0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419,
             0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4,
             0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07,
             0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de,
             0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856,
             0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9,
             0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4,
             0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b,
             0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3,
             0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a,
             0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599,
             0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924,
             0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190,
             0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f,
             0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e,
             0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01,
             0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed,
             0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950,
             0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3,
             0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2,
             0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a,
             0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5,
             0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010,
             0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f,
             0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17,
             0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6,
             0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615,
             0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8,
             0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344,
             0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb,
             0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a,
             0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5,
             0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1,
             0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c,
             0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef,
             0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236,
             0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe,
             0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31,
             0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c,
             0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713,
             0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b,
             0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242,
             0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1,
             0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c,
             0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278,
             0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7,
             0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66,
             0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9,
             0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605,
             0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8,
             0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b,
             0x2d02ef8d
    );

    $crc = 0xffffffff;
    $len = length($arg);
    @args = unpack "c*", $arg;
    for ($i = 0; $i < $len; $i++) {
        $index = ($crc ^ $args[$i]) & 0xff;
        $crc = $crc_table[$index] ^ (($crc >> 8) & 0x00ffffff);
    }
    return ($crc);
}

