function main()
{
global $argc, $argv;
$cols = 0;
$lines = 0;
$font_width = 6;
$font_height = 10;
$format = NULL;
$dither = NULL;
$gamma = $brightness = $contrast = -1.0;
$long_options = array("width:" => 'W', "height:" => 'H', "font-width:" => 'x', "font-height:" => 'y', "format:" => 'f', "dither:" => 'd', "gamma:" => 'g', "brightness:" => 'b', "contrast:" => 'c', "help" => 'h', "version" => 'v');
try {
while ($opt_and_arg = mygetopt("W:H:f:d:g:b:c:hvx:y:", array_keys($long_options))) {
$opt = $opt_and_arg[0];
$arg = $opt_and_arg[1];
if (substr($opt, 0, 2) == '--' && array_key_exists(substr($opt, strlen('--')) . ($arg !== NULL ? ':' : ''), $long_options)) {
$opt = '-' . $long_options[substr($opt, strlen('--')) . ($arg !== NULL ? ':' : '')];
}
switch ($opt) {
case '-W':
/* --width */
$cols = intval($arg);
break;
case '-H':
/* --height */
$lines = intval($arg);
break;
case '-x':
/* --width */
$font_width = intval($arg);
break;
case '-y':
/* --height */
$font_height = intval($arg);
break;
case '-f':
/* --format */
$format = $arg;
break;
case '-d':
/* --dither */
$dither = $arg;
break;
case '-g':
/* --gamma */
$gamma = floatval($arg);
break;
case '-b':
/* --brightness */
$brightness = floatval($arg);
break;
case '-c':
/* --contrast */
$contrast = floatval($arg);
break;
case '-h':
/* --help */
usage($argc, $argv);
return 0;
case '-v':
/* --version */
version();
return 0;
default:
return 1;
}
}
} catch (MygetoptException $e) {
fprintf(STDERR, "%s", $argv[0] . ": " . $e->getMessage() . "\n");
usage($argc, $argv);
return 2;
}
if ($argc != 2) {
fprintf(STDERR, "%s: wrong argument count\n", $argv[0]);
usage($argc, $argv);
return 1;
}
$cv = caca_create_canvas(0, 0);
if (!$cv) {
fprintf(STDERR, "%s: unable to initialise libcaca\n", $argv[0]);
return 1;
}
$i_str = file_get_contents($argv[$argc - 1]);
$i = $i_str ? imagecreatefromstring($i_str) : NULL;
if (!$i) {
fprintf(STDERR, "%s: unable to load %s\n", $argv[0], $argv[$argc - 1]);
return 1;
}
/* Assume a 6×10 font */
if (!$cols && !$lines) {
$cols = 60;
$lines = $cols * imagesy($i) * $font_width / imagesx($i) / $font_height;
} else {
if ($cols && !$lines) {
$lines = $cols * imagesy($i) * $font_width / imagesx($i) / $font_height;
} else {
if (!$cols && $lines) {
$cols = $lines * imagesx($i) * $font_height / imagesy($i) / $font_width;
}
}
}
caca_set_canvas_size($cv, $cols, $lines);
caca_set_color_ansi($cv, CACA_DEFAULT, CACA_TRANSPARENT);
caca_clear_canvas($cv);
$i_dither = caca_create_dither($i);
if (!caca_set_dither_algorithm($i_dither, $dither ? $dither : "fstein")) {
fprintf(STDERR, "%s: Can't dither image with algorithm '%s'\n", $argv[0], $dither ? $dither : "fstein");
return -1;
}
if ($brightness != -1) {
caca_set_dither_brightness($i_dither, $brightness);
}
if ($contrast != -1) {
caca_set_dither_contrast($i_dither, $contrast);
}
if ($gamma != -1) {
caca_set_dither_gamma($i_dither, $gamma);
}
caca_dither_bitmap($cv, 0, 0, $cols, $lines, $i_dither, $i);
$export = caca_export_string($cv, $format ? $format : "ansi");
if (!$export) {
fprintf(STDERR, "%s: Can't export to format '%s'\n", $argv[0], $format ? $format : "ansi");
return -1;
} else {
echo $export;
}
return 0;
}
function Clear()
{
return caca_clear_canvas($this->cv);
}
* to Public License, Version 2, as published by Sam Hocevar. See
* http://www.wtfpl.net/ for more details.
*/
?>
<head>
<title>display all possible libcaca colour pairs</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body text="silver" bgcolor="black">
<?php
$cv = caca_create_canvas(80, 24);
if (!$cv) {
die("Failed to create canvas\n");
}
caca_set_color_ansi($cv, CACA_LIGHTGRAY, CACA_BLACK);
caca_clear_canvas($cv);
for ($i = 0; $i < 16; $i++) {
caca_set_color_ansi($cv, CACA_LIGHTGRAY, CACA_BLACK);
caca_put_str($cv, 3, $i + ($i >= 8 ? 3 : 2), "ANSI " . $i);
for ($j = 0; $j < 16; $j++) {
caca_set_color_ansi($cv, $i, $j);
caca_put_str($cv, ($j >= 8 ? 13 : 12) + $j * 4, $i + ($i >= 8 ? 3 : 2), "Aaホ");
}
}
caca_set_color_ansi($cv, CACA_LIGHTGRAY, CACA_BLACK);
caca_put_str($cv, 3, 20, "This is bold This is blink This is italics This is underline");
caca_set_attr($cv, CACA_BOLD);
caca_put_str($cv, 3 + 8, 20, "bold");
caca_set_attr($cv, CACA_BLINK);
caca_put_str($cv, 3 + 24, 20, "blink");
caca_set_attr($cv, CACA_ITALICS);
function main()
{
global $file, $filename;
global $argc, $argv;
global $stderr;
$cols = 0;
$lines = 0;
$font_width = 6;
$font_height = 10;
$format = NULL;
$dither = NULL;
$gamma = $brightness = $contrast = -1.0;
$long_options = array("width:" => 'W', "height:" => 'H', "font-width:" => 'x', "font-height:" => 'y', "format:" => 'f', "dither:" => 'd', "gamma:" => 'g', "brightness:" => 'b', "contrast:" => 'c', "help" => 'h', "version" => 'v');
try {
while ($opt_and_arg = mygetopt("W:H:f:d:g:b:c:hvx:y:", array_keys($long_options))) {
$opt = $opt_and_arg[0];
$arg = $opt_and_arg[1];
if (substr($opt, 0, 2) == '--' && array_key_exists(substr($opt, strlen('--')) . ($arg !== NULL ? ':' : ''), $long_options)) {
$opt = '-' . $long_options[substr($opt, strlen('--')) . ($arg !== NULL ? ':' : '')];
}
switch ($opt) {
case '-W':
/* --width */
$cols = intval($arg);
break;
case '-H':
/* --height */
$lines = intval($arg);
break;
case '-x':
/* --width */
$font_width = intval($arg);
break;
case '-y':
/* --height */
$font_height = intval($arg);
break;
case '-f':
/* --format */
$format = $arg;
break;
case '-d':
/* --dither */
$dither = $arg;
break;
case '-g':
/* --gamma */
$gamma = floatval($arg);
break;
case '-b':
/* --brightness */
$brightness = floatval($arg);
break;
case '-c':
/* --contrast */
$contrast = floatval($arg);
break;
case '-h':
/* --help */
usage($argc, $argv);
return 0;
case '-v':
/* --version */
version();
return 0;
default:
return 1;
}
}
} catch (MygetoptException $e) {
$stderr .= $argv[0] . ": " . $e->getMessage() . "\n";
usage($argc, $argv);
return 2;
}
if (!$file && $argc == 2 && $argv[1] == 'logo-caca.png') {
$file = 'logo-caca.png';
$argc = 1;
} else {
if ($filename && $file && $argc == 2 && strtolower(basename($argv[1])) == strtolower(basename($filename))) {
$argc = 1;
}
}
if ($argc == 2) {
$stderr .= sprintf("%s: image not found\n", $argv[1]);
return 1;
}
if ($argc > 2) {
$stderr .= sprintf("%s: too many arguments\n", $argv[0]);
usage($argc, $argv);
return 1;
}
if (!$file) {
$stderr .= sprintf("%s: no image was provided\n", $argv[0]);
usage($argc, $argv);
return 1;
}
$cv = caca_create_canvas(0, 0);
if (!$cv) {
$stderr .= sprintf("%s: unable to initialise libcaca\n", $argv[0]);
return 1;
}
$i_str = $file ? file_get_contents($file) : NULL;
$i = $i_str ? imagecreatefromstring($i_str) : NULL;
if (!$i) {
$stderr .= sprintf("%s: unable to load %s\n", $argv[0], $filename);
return 1;
}
/* Assume a 6×10 font */
if (!$cols && !$lines) {
$cols = 60;
$lines = $cols * imagesy($i) * $font_width / imagesx($i) / $font_height;
} else {
if ($cols && !$lines) {
$lines = $cols * imagesy($i) * $font_width / imagesx($i) / $font_height;
} else {
if (!$cols && $lines) {
$cols = $lines * imagesx($i) * $font_height / imagesy($i) / $font_width;
}
}
}
caca_set_canvas_size($cv, $cols, $lines);
caca_set_color_ansi($cv, CACA_DEFAULT, CACA_TRANSPARENT);
caca_clear_canvas($cv);
$i_dither = caca_create_dither($i);
if (!caca_set_dither_algorithm($i_dither, $dither ? $dither : "fstein")) {
$stderr .= sprintf("%s: Can't dither image with algorithm '%s'\n", $argv[0], $dither ? $dither : "fstein");
return -1;
}
if ($brightness != -1) {
caca_set_dither_brightness($i_dither, $brightness);
}
if ($contrast != -1) {
caca_set_dither_contrast($i_dither, $contrast);
}
if ($gamma != -1) {
caca_set_dither_gamma($i_dither, $gamma);
}
caca_dither_bitmap($cv, 0, 0, $cols, $lines, $i_dither, $i);
$format = $format ? $format : 'html';
$export = caca_export_string($cv, $format);
if (!$export) {
$stderr .= sprintf("%s: Can't export to format '%s'\n", $argv[0], $format);
return -1;
} else {
$content_type_map = array('ansi' => 'text/plain; charset=CP437', 'utf8' => 'text/plain; charset=UTF-8', 'utf8cr' => 'text/plain; charset=UTF-8', 'html' => 'text/html; charset=UTF-8', 'html3' => 'text/html; charset=UTF-8', 'bbfr' => 'text/plain; charset=UTF-8', 'irc' => 'text/plain; charset=UTF-8', 'ps' => 'application/postscript', 'svg' => 'image/svg+xml', 'tga' => 'image/x-targa');
$download_extension_map = array('caca' => 'caca', 'ansi' => 'txt', 'utf8' => 'txt', 'utf8cr' => 'txt', 'irc' => 'txt', 'tga' => 'tga');
$inline_extension_map = array('bbfr' => 'txt', 'ps' => 'ps', 'svg' => 'svg');
if (!array_key_exists($format, $content_type_map)) {
$content_type = 'application/octet-stream';
} else {
$content_type = $content_type_map[$format];
}
header('Content-Type: ' . $content_type);
if (array_key_exists($format, $download_extension_map)) {
header('Content-Disposition: attachment; filename=export.' . $download_extension_map[$format]);
} else {
if (array_key_exists($format, $inline_extension_map)) {
header('Content-Disposition: inline; filename=export.' . $inline_extension_map[$format]);
}
}
echo $export;
}
return 0;
}
function demo_all($cv, $bounds, $outline)
{
global $i;
$i++;
caca_set_color_ansi($cv, CACA_LIGHTGRAY, CACA_BLACK);
caca_clear_canvas($cv);
/* Draw the sun */
caca_set_color_ansi($cv, CACA_YELLOW, CACA_BLACK);
$xo = caca_get_canvas_width($cv) / 4;
$yo = caca_get_canvas_height($cv) / 4 + 5 * sin(0.03 * $i);
for ($j = 0; $j < 16; $j++) {
$xa = $xo - (30 + sin(0.03 * $i) * 8) * sin(0.03 * $i + M_PI * $j / 8);
$ya = $yo + (15 + sin(0.03 * $i) * 4) * cos(0.03 * $i + M_PI * $j / 8);
caca_draw_thin_line($cv, $xo, $yo, $xa, $ya);
}
$j = 15 + sin(0.03 * $i) * 8;
caca_set_color_ansi($cv, CACA_WHITE, CACA_BLACK);
caca_fill_ellipse($cv, $xo, $yo, $j, $j / 2, ord('#'));
caca_set_color_ansi($cv, CACA_YELLOW, CACA_BLACK);
caca_draw_ellipse($cv, $xo, $yo, $j, $j / 2, ord('#'));
/* Draw the pyramid */
$xo = caca_get_canvas_width($cv) * 5 / 8;
$yo = 2;
$xa = caca_get_canvas_width($cv) / 8 + sin(0.03 * $i) * 5;
$ya = caca_get_canvas_height($cv) / 2 + cos(0.03 * $i) * 5;
$xb = caca_get_canvas_width($cv) - 10 - cos(0.02 * $i) * 10;
$yb = caca_get_canvas_height($cv) * 3 / 4 - 5 + sin(0.02 * $i) * 5;
$xc = caca_get_canvas_width($cv) / 4 - sin(0.02 * $i) * 5;
$yc = caca_get_canvas_height($cv) * 3 / 4 + cos(0.02 * $i) * 5;
caca_set_color_ansi($cv, CACA_GREEN, CACA_BLACK);
caca_fill_triangle($cv, $xo, $yo, $xb, $yb, $xa, $ya, ord('%'));
caca_set_color_ansi($cv, CACA_YELLOW, CACA_BLACK);
caca_draw_thin_triangle($cv, $xo, $yo, $xb, $yb, $xa, $ya);
caca_set_color_ansi($cv, CACA_RED, CACA_BLACK);
caca_fill_triangle($cv, $xa, $ya, $xb, $yb, $xc, $yc, ord('#'));
caca_set_color_ansi($cv, CACA_YELLOW, CACA_BLACK);
caca_draw_thin_triangle($cv, $xa, $ya, $xb, $yb, $xc, $yc);
caca_set_color_ansi($cv, CACA_BLUE, CACA_BLACK);
caca_fill_triangle($cv, $xo, $yo, $xb, $yb, $xc, $yc, ord('%'));
caca_set_color_ansi($cv, CACA_YELLOW, CACA_BLACK);
caca_draw_thin_triangle($cv, $xo, $yo, $xb, $yb, $xc, $yc);
/* Draw a background triangle */
$xa = 2;
$ya = 2;
$xb = caca_get_canvas_width($cv) - 3;
$yb = caca_get_canvas_height($cv) / 2;
$xc = caca_get_canvas_width($cv) / 3;
$yc = caca_get_canvas_height($cv) - 3;
caca_set_color_ansi($cv, CACA_CYAN, CACA_BLACK);
caca_draw_thin_triangle($cv, $xa, $ya, $xb, $yb, $xc, $yc);
$xo = caca_get_canvas_width($cv) / 2 + cos(0.027 * $i) * caca_get_canvas_width($cv) / 3;
$yo = caca_get_canvas_height($cv) / 2 - sin(0.027 * $i) * caca_get_canvas_height($cv) / 2;
caca_draw_thin_line($cv, $xa, $ya, $xo, $yo);
caca_draw_thin_line($cv, $xb, $yb, $xo, $yo);
caca_draw_thin_line($cv, $xc, $yc, $xo, $yo);
/* Draw a trail behind the foreground sprite */
for ($j = $i - 60; $j < $i; $j++) {
$delta = caca_rand(-5, 6);
caca_set_color_ansi($cv, caca_rand(0, 16), caca_rand(0, 16));
caca_put_char($cv, caca_get_canvas_width($cv) / 2 + cos(0.02 * $j) * ($delta + caca_get_canvas_width($cv) / 4), caca_get_canvas_height($cv) / 2 + sin(0.02 * $j) * ($delta + caca_get_canvas_height($cv) / 3), ord('#'));
}
}
