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libcaca
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now works as HTML

tags/v0.99.beta17
Ben Wiley Sittler bsittler 16 years ago
parent
8e859c7c0d
commit
bea03b1b1b
1 changed files with 201 additions and 76 deletions
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  1. +201
    -76
      caca-php/examples/www/img2txt.php

+ 201
- 76
caca-php/examples/www/img2txt.php View File

@@ -1,7 +1,10 @@
#!/usr/bin/php5
<?php
/*
* img2txt image to text converter
* Copyright (c) 2008 Benjamin C. Wiley Sittler <bsittler@gmail.com>
*
* This file is a Php port of "src/img2txt.c"
* which is:
* Copyright (c) 2006 Sam Hocevar <sam@zoy.org>
* 2007 Jean-Yves Lamoureux <jylam@lnxscene.org>
* All Rights Reserved
@@ -15,9 +18,29 @@
* http://sam.zoy.org/wtfpl/COPYING for more details.
*/

if (php_sapi_name() != "cli") {
die("You have to run this program with php-cli!\n");
$img2txt_php = isset($_SERVER['SCRIPT_NAME'])
?
$_SERVER['SCRIPT_NAME']
:
'img2txt.php';

$argv = array(basename($img2txt_php));
$args = '';
if(isset($_REQUEST['args']))
{
$args = $_REQUEST['args'];
}
$args=trim($args);
if(strlen($args))
{
foreach(explode(' ', $args) as $arg)
{
$argv[] = $arg;
}
}
$argc = count($argv);
$stderr = '';
$stdout = '';

class MygetoptException extends Exception
{
@@ -197,37 +220,39 @@ function mygetopt($shortopts, $longopts)

function usage($argc, $argv)
{
fprintf(STDERR, "Usage: %s [OPTIONS]... <IMAGE>\n", $argv[0]);
fprintf(STDERR, "Convert IMAGE to any text based available format.\n");
fprintf(STDERR, "Example : %s -w 80 -f ansi ./caca.png\n\n", $argv[0]);
fprintf(STDERR, "Options:\n");
fprintf(STDERR, " -h, --help\t\t\tThis help\n");
fprintf(STDERR, " -v, --version\t\t\tVersion of the program\n");
fprintf(STDERR, " -W, --width=WIDTH\t\tWidth of resulting image\n");
fprintf(STDERR, " -H, --height=HEIGHT\t\tHeight of resulting image\n");
fprintf(STDERR, " -x, --font-width=WIDTH\t\tWidth of output font\n");
fprintf(STDERR, " -y, --font-height=HEIGHT\t\tHeight of output font\n");
fprintf(STDERR, " -b, --brightness=BRIGHTNESS\tBrightness of resulting image\n");
fprintf(STDERR, " -c, --contrast=CONTRAST\tContrast of resulting image\n");
fprintf(STDERR, " -g, --gamma=GAMMA\t\tGamma of resulting image\n");
fprintf(STDERR, " -d, --dither=DITHER\t\tDithering algorithm to use :\n");
global $stderr;
$stderr .= sprintf("Usage: %s [OPTIONS]... <IMAGE>\n", $argv[0]);
$stderr .= sprintf("Convert IMAGE to any text based available format.\n");
$stderr .= sprintf("Example : %s -w 80 -f ansi ./caca.png\n\n", $argv[0]);
$stderr .= sprintf("Options:\n");
$stderr .= sprintf(" -h, --help\t\t\tThis help\n");
$stderr .= sprintf(" -v, --version\t\t\tVersion of the program\n");
$stderr .= sprintf(" -W, --width=WIDTH\t\tWidth of resulting image\n");
$stderr .= sprintf(" -H, --height=HEIGHT\t\tHeight of resulting image\n");
$stderr .= sprintf(" -x, --font-width=WIDTH\t\tWidth of output font\n");
$stderr .= sprintf(" -y, --font-height=HEIGHT\t\tHeight of output font\n");
$stderr .= sprintf(" -b, --brightness=BRIGHTNESS\tBrightness of resulting image\n");
$stderr .= sprintf(" -c, --contrast=CONTRAST\tContrast of resulting image\n");
$stderr .= sprintf(" -g, --gamma=GAMMA\t\tGamma of resulting image\n");
$stderr .= sprintf(" -d, --dither=DITHER\t\tDithering algorithm to use :\n");
$list = caca_get_dither_algorithm_list(caca_create_dither(imagecreate(1, 1)));
foreach($list as $type => $name)
{
fprintf(STDERR, "\t\t\t%s: %s\n", $type, $name);
$stderr .= sprintf("\t\t\t%s: %s\n", $type, $name);
}

fprintf(STDERR, " -f, --format=FORMAT\t\tFormat of the resulting image :\n");
$stderr .= sprintf(" -f, --format=FORMAT\t\tFormat of the resulting image :\n");
$list = caca_get_export_list();
foreach($list as $type => $name)
{
fprintf(STDERR, "\t\t\t%s: %s\n", $type, $name);
$stderr .= sprintf("\t\t\t%s: %s\n", $type, $name);
}
}

function version()
{
printf(
global $stdout;
$stdout .= sprintf(
"img2txt Copyright 2006-2007 Sam Hocevar and Jean-Yves Lamoureux\n" .
"Internet: <sam@zoy.org> <jylam@lnxscene.org> Version: %s\n" .
"\n" .
@@ -241,6 +266,7 @@ function version()
function main()
{
global $argc, $argv;
global $stderr;
$cols = 0;
$lines = 0;
$font_width = 6;
@@ -263,59 +289,77 @@ function main()
"version" => 'v'
);

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)
try {
while($opt_and_arg = mygetopt("W:H:f:d:g:b:c:hvx:y:", array_keys($long_options)))
{
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;
$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($argc > 1)
{
$stderr .= sprintf("%s: too many arguments\n", $argv[0]);
usage($argc, $argv);
return 1;
}

$file = isset($_FILES['file']) ? $_FILES['file']['tmp_name'] : NULL;
$filename = isset($_FILES['file']) ? $_FILES['file']['name'] : NULL;

if($argc != 2)
if(! $file)
{
fprintf(STDERR, "%s: wrong argument count\n", $argv[0]);
$stderr .= sprintf("%s: no image was provided\n", $argv[0]);
usage($argc, $argv);
return 1;
}
@@ -323,15 +367,15 @@ function main()
$cv = caca_create_canvas(0, 0);
if(!$cv)
{
fprintf(STDERR, "%s: unable to initialise libcaca\n", $argv[0]);
$stderr .= sprintf("%s: unable to initialise libcaca\n", $argv[0]);
return 1;
}

$i_str = file_get_contents($argv[$argc-1]);
$i_str = $file ? file_get_contents($file) : NULL;
$i = $i_str ? imagecreatefromstring($i_str) : NULL;
if(!$i)
{
fprintf(STDERR, "%s: unable to load %s\n", $argv[0], $argv[$argc-1]);
$stderr .= sprintf("%s: unable to load %s\n", $argv[0], $filename);
return 1;
}

@@ -357,7 +401,7 @@ function main()
$i_dither = caca_create_dither($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");
$stderr .= sprintf("%s: Can't dither image with algorithm '%s'\n", $argv[0], $dither?$dither:"fstein");
return -1;
}

@@ -367,17 +411,98 @@ function main()

caca_dither_bitmap($cv, 0, 0, $cols, $lines, $i_dither, $i);

$export = caca_export_string($cv, $format?$format:"ansi");
$format = $format ? $format : 'html';

$export = caca_export_string($cv, $format);
if(!$export)
{
fprintf(STDERR, "%s: Can't export to format '%s'\n", $argv[0], $format);
$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;
}
exit(main());
if(main() || strlen($stdout) || strlen($stderr))
{
header('Content-Type: text/html; charset=UTF-8');
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>image to text converter</title>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
</head>
<body>
<form id="img2txtform" name="img2txtform" action="#" enctype="multipart/form-data" method="post">
<label for="file">Image:</label>
<input id="file" name="file" type="file" />
<br />
<label for="args">Options:</label>
<input id="args" name="args" type="text" value="<?= htmlspecialchars($args) ?>" size="80" />
<br />
<input type="submit" />
</form>
<?php
;
if(strlen($stderr))
{
?><pre xml:space="preserve"><em><?= htmlspecialchars($stderr) ?></em></pre><?php
;
}
if(strlen($stdout))
{
?><pre xml:space="preserve"><?= htmlspecialchars($stdout) ?></pre><?php
;
}
?>
</body>
</html>
<?php
;
}
?>

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