/**
* Erases Minify legacy directives
*
* @param string $data
* @return string
*/
function erase_rules_legacy($data)
{
$data = w3_erase_rules($data, W3TC_MARKER_BEGIN_MINIFY_LEGACY, W3TC_MARKER_END_MINIFY_LEGACY);
return $data;
}
/**
* Erases no404wp rules
*
* @param string $data
* @return string
*/
function erase_rules_no404wp($data)
{
$data = w3_erase_rules($data, W3TC_MARKER_BEGIN_BROWSERCACHE_NO404WP, W3TC_MARKER_END_BROWSERCACHE_NO404WP);
return $data;
}
/**
* Writes directives to WP .htaccess
*
* @param W3_Config $config
* @param SelfTestExceptions $exs
* @throws FilesystemOperationException with S/FTP form if it can't get the required filesystem credentials
* @throws FileOperationException
*/
private function rules_core_add($config, $exs)
{
$path = w3_get_pgcache_rules_core_path();
if ($path === false) {
return;
}
$original_data = @file_get_contents($path);
if ($original_data === false) {
$original_data = '';
}
$data = $original_data;
$new_data = w3_erase_rules($data, W3TC_MARKER_BEGIN_PGCACHE_LEGACY, W3TC_MARKER_END_PGCACHE_LEGACY);
$has_legacy = strlen($new_data) < strlen($data);
$data = $new_data;
$new_data = w3_erase_rules($data, W3TC_MARKER_BEGIN_PGCACHE_WPSC, W3TC_MARKER_END_PGCACHE_WPSC);
$has_wpsc = strlen($new_data) < strlen($data);
$data = $new_data;
$rules = $this->rules_core_generate($config);
$rules_missing = strstr(w3_clean_rules($data), w3_clean_rules($rules)) === false;
if (!$has_legacy && !$has_wpsc && !$rules_missing) {
return;
}
// modification of file not required
$replace_start = strpos($data, W3TC_MARKER_BEGIN_PGCACHE_CORE);
$replace_end = strpos($data, W3TC_MARKER_END_PGCACHE_CORE);
if ($replace_start !== false && $replace_end !== false && $replace_start < $replace_end) {
$replace_length = $replace_end - $replace_start + strlen(W3TC_MARKER_END_PGCACHE_CORE) + 1;
} else {
$replace_start = false;
$replace_length = 0;
$search = array(W3TC_MARKER_BEGIN_BROWSERCACHE_NO404WP => 0, W3TC_MARKER_BEGIN_WORDPRESS => 0, W3TC_MARKER_END_MINIFY_CORE => strlen(W3TC_MARKER_END_MINIFY_CORE) + 1, W3TC_MARKER_END_BROWSERCACHE_CACHE => strlen(W3TC_MARKER_END_BROWSERCACHE_CACHE) + 1, W3TC_MARKER_END_PGCACHE_CACHE => strlen(W3TC_MARKER_END_PGCACHE_CACHE) + 1, W3TC_MARKER_END_MINIFY_CACHE => strlen(W3TC_MARKER_END_MINIFY_CACHE) + 1);
foreach ($search as $string => $length) {
$replace_start = strpos($data, $string);
if ($replace_start !== false) {
$replace_start += $length;
break;
}
}
}
if ($replace_start !== false) {
$data = w3_trim_rules(substr_replace($data, $rules, $replace_start, $replace_length));
} else {
$data = w3_trim_rules($data . $rules);
}
try {
w3_wp_write_to_file($path, $data);
} catch (FilesystemOperationException $ex) {
if ($has_legacy) {
$exs->push(new FilesystemModifyException($ex->getMessage(), $ex->credentials_form(), sprintf(__('Edit file <strong>%s</strong> and remove all lines between and including <strong>
%s</strong> and <strong>%s</strong> markers.', 'w3-total-cache'), $path, W3TC_MARKER_BEGIN_PGCACHE_LEGACY, W3TC_MARKER_END_PGCACHE_LEGACY), $path));
}
if ($has_wpsc) {
$exs->push(new FilesystemModifyException($ex->getMessage(), $ex->credentials_form(), sprintf(__('Edit file <strong>%s</strong> and remove all lines between and including
<strong>%s</strong> and <strong>%s</strong> markers.', 'w3-total-cache'), $path, W3TC_MARKER_BEGIN_PGCACHE_WPSC, W3TC_MARKER_END_PGCACHE_WPSC), $path));
}
if ($rules_missing) {
if ($replace_start !== false) {
$exs->push(new FilesystemModifyException($ex->getMessage(), $ex->credentials_form(), sprintf(__('Edit file <strong>%s</strong> and replace all lines between and including
<strong>%s</strong> and <strong>%s</strong> markers with:', 'w3-total-cache'), $path, W3TC_MARKER_BEGIN_PGCACHE_CORE, W3TC_MARKER_END_PGCACHE_CORE), $path, $rules));
} else {
$exs->push(new FilesystemModifyException($ex->getMessage(), $ex->credentials_form(), sprintf(__('Edit file <strong>%s</strong> and add the following rules above the WordPress
directives:'), $path), $path, $rules));
}
}
}
}
/**
* Erases WP Super Cache rules directives
*
* @param string $data
* @return string
*/
function erase_rules_wpsc($data)
{
$data = w3_erase_rules($data, W3TC_MARKER_BEGIN_PGCACHE_WPSC, W3TC_MARKER_END_PGCACHE_WPSC);
return $data;
}
/**
* Erases cache rules
*
* @param string $data
* @return string
*/
function erase_rules($data)
{
$data = w3_erase_rules($data, W3TC_MARKER_BEGIN_CDN, W3TC_MARKER_END_CDN);
return $data;
}
/**
* @param SelfTestExceptions $exs
* @param string $path
* @param string $start
* @param string $end
*/
function w3_remove_rules($exs, $path, $start, $end)
{
if (!file_exists($path)) {
return;
}
$data = @file_get_contents($path);
if ($data === false) {
return;
}
if (strstr($data, $start) === false) {
return;
}
$data = w3_erase_rules($data, $start, $end);
try {
w3_wp_write_to_file($path, $data);
} catch (FilesystemOperationException $ex) {
$exs->push(new FilesystemModifyException($ex->getMessage(), $ex->credentials_form(), sprintf(__('Edit file <strong>%s</strong> and remove all lines between and including <strong>%s</strong>
and <strong>%s</strong> markers.', 'w3-total-cache'), $path, $start, $end), $path));
}
}
/**
* Erases Minify core directives
*
* @param string $data
* @return string
*/
function erase_rules_core($data)
{
$data = w3_erase_rules($data, W3TC_MARKER_BEGIN_NEW_RELIC_CORE, W3TC_MARKER_END_NEW_RELIC_CORE);
return $data;
}
