tags are respected and their contents are left alone. Warning, nestedtags may exhibit unexpected behaviour. This code is licensed under the MIT Open Source License. Copyright (c) 2010 [email protected] Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
private function htmlCompress($data, $options = null)
{
if (!isset($options)) {
$options = [];
}
$data .= "\n";
$out = '';
$inside_pre = false;
$inside_textarea = false;
$bytecount = 0;
while ($line = $this->getLine($data)) {
$bytecount += strlen($line);
if ($inside_pre) {
list($line, $inside_pre) = $this->checkInsidePre($line);
} elseif ($inside_textarea) {
list($line, $inside_textarea) = $this->checkInsideTextarea($line);
} else {
if (strpos($line, '<pre') !== false) {
// Only trim the beginning since we just entered a <pre> block...
$line = ltrim($line);
// If the <pre> ends on the same line, don't turn on $inside_pre...
list($line, $inside_pre) = $this->checkInsidePre($line);
} elseif (strpos($line, '<textarea') !== false) {
// Only trim the beginning since we just entered a <textarea> block...
$line = ltrim($line);
// If the <textarea> ends on the same line, don't turn on $inside_textarea...
list($line, $inside_textarea) = $this->checkInsideTextarea($line);
} else {
// Since we're not inside a <pre> block, we can trim both ends of the line
$line = trim($line);
// And condense multiple spaces down to one
$line = preg_replace('/\\s\\s+/', ' ', $line);
}
}
// Filter out any blank lines that aren't inside a <pre> block...
if ($inside_pre || $inside_textarea) {
$out .= $line;
} elseif ($line != '') {
$out .= $line . "\n";
}
}
// Perform any extra (unsafe) compression techniques...
if (array_key_exists('x', $options) || array_key_exists('extra', $options)) {
// Can break layouts that are dependent on whitespace between tags
$out = str_replace(">\n<", '><', $out);
}
// Remove HTML comments...
if (array_key_exists('c', $options) || array_key_exists('no-comments', $options)) {
$out = preg_replace('/(<!--.*?-->)/ms', '', $out);
$out = str_replace('<!>', '', $out);
}
// Remove the trailing \n
$out = trim($out);
// Output either our stats or the compressed data...
if (array_key_exists('s', $options) || array_key_exists('stats', $options)) {
$echo = '';
$echo .= "Original Size: {$bytecount}\n";
$echo .= "Compressed Size: " . strlen($out) . "\n";
$echo .= "Savings: " . round((1 - strlen($out) / $bytecount) * 100, 2) . "%\n";
echo $echo;
} else {
return $out;
}
return false;
}