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<?php
// This file is part of Moodle - http://moodle.org/
//
// Moodle 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 3 of the License, or
// (at your option) any later version.
//
// Moodle is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Moodle. If not, see <http://www.gnu.org/licenses/>.
/**
* This script implements some useful svg manipulation tricks.
*
* @package core_admin
* @subpackage cli
* @copyright 2012 Petr Skoda {@link http://skodak.org}
* @license http://www.gnu.org/copyleft/gpl.html GNU GPL v3 or later
*/
define('CLI_SCRIPT', true);
require(__DIR__.'/../../config.php');
require_once($CFG->libdir.'/clilib.php');
// Now get cli options.
list($options, $unrecognized) = cli_get_params(array('help'=>false, 'ie9fix'=>false, 'noaspectratio'=>false, 'path'=>$CFG->dirroot),
array('h'=>'help'));
if ($unrecognized) {
$unrecognized = implode("\n ", $unrecognized);
cli_error(get_string('cliunknowoption', 'admin', $unrecognized));
}
// If necessary add files that should be ignored - such as in 3rd party plugins.
$ignorelist = array();
$path = $options['path'];
if (!file_exists($path)) {
cli_error("Invalid path $path");
}
if ($options['ie9fix']) {
core_admin_recurse_svgs($path, '', 'core_admin_svgtool_ie9fix', $ignorelist);
} else if ($options['noaspectratio']) {
core_admin_recurse_svgs($path, '', 'core_admin_svgtool_noaspectratio', $ignorelist);
} else {
$help =
"Some svg image tweaks for icon designers.
Options:
-h, --help Print out this help
--ie9fix Adds preserveAspectRatio=\"xMinYMid meet\" to every svg image
--noaspectratio Removes preserveAspectRatio from svg files
--path=PATH Path to directory or file to be converted, by default \$CFG->dirroot
Examples:
\$ php svgtool.php --ie9fix
\$ php svgtool.php --ie9fix --path=../../../pix
\$ php svgtool.php --noaspectratio
";
echo $help;
die;
}
exit(0);
/**
* Fixes SVG images for IE9.
*
* @param string $file
*/
function core_admin_svgtool_ie9fix($file) {
global $CFG;
if (strpos($file, $CFG->dirroot.DIRECTORY_SEPARATOR) === 0) {
$relfile = substr($file, strlen($CFG->dirroot));
} else {
$relfile = $file;
}
$content = file_get_contents($file);
if (!preg_match('/<svg\s[^>]*>/', $content, $matches)) {
echo " skipping $relfile (invalid format)\n";
return;
}
$svg = $matches[0];
if (strpos($svg, 'preserveAspectRatio') !== false) {
return;
}
if (!is_writable($file)) {
echo " skipping $relfile (can not modify file)\n";
return;
}
$newsvg = rtrim($svg, '>').' preserveAspectRatio="xMinYMid meet">';
$content = str_replace($svg, $newsvg, $content);
echo "converting $relfile\n";
file_put_contents($file, $content);
}
/**
* Removes preserveAspectRatio attributes from SVG images.
*
* @param string $file
*/
function core_admin_svgtool_noaspectratio($file) {
global $CFG;
if (strpos($file, $CFG->dirroot.DIRECTORY_SEPARATOR) === 0) {
$relfile = substr($file, strlen($CFG->dirroot));
} else {
$relfile = $file;
}
$content = file_get_contents($file);
if (!preg_match('/<svg\s[^>]*>/', $content, $matches)) {
echo " skipping $relfile (invalid format)\n";
return;
}
$svg = $matches[0];
if (strpos($svg, 'preserveAspectRatio="xMinYMid meet"') === false) {
return;
}
if (!is_writable($file)) {
echo " skipping $relfile (can not modify file)\n";
return;
}
$newsvg = preg_replace('/ ?preserveAspectRatio="xMinYMid meet"/', '', $svg);
$content = str_replace($svg, $newsvg, $content);
echo "resetting $relfile\n";
file_put_contents($file, $content);
}
/**
* Recursively works through directories of this theme, finding and fixing SVG images.
*
* @param string $base
* @param string $sub
* @param string $filecallback
* @param array $ignorelist List of files to be ignored and skipped.
*/
function core_admin_recurse_svgs($base, $sub, $filecallback, $ignorelist) {
if (is_dir("$base/$sub")) {
$items = new DirectoryIterator("$base/$sub");
foreach ($items as $item) {
if ($item->isDot()) {
continue;
}
$file = $item->getFilename();
core_admin_recurse_svgs("$base/$sub", $file, $filecallback, $ignorelist);
}
unset($item);
unset($items);
return;
} else if (is_file("$base/$sub")) {
if (substr($sub, -4) !== '.svg') {
return;
}
$file = realpath("$base/$sub");
if (in_array($file, $ignorelist)) {
return;
}
$filecallback($file);
}
}