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Optimised unzip_file(), reduces is_dir() IO calls. See #10779 

git-svn-id: http://svn.automattic.com/wordpress/trunk@12794 1a063a9b-81f0-0310-95a4-ce76da25c4cd
This commit is contained in:
dd32 2010-01-22 11:02:09 +00:00
parent e4443b72f7
commit 4e5292e08f
1 changed files with 37 additions and 34 deletions
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65
wp-admin/includes/file.php
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@ -504,8 +504,6 @@ function unzip_file($file, $to) {
// Unzip uses a lot of memory, but not this much hopefully
@ini_set('memory_limit', '256M');
$fs =& $wp_filesystem;
require_once(ABSPATH . 'wp-admin/includes/class-pclzip.php');
$archive = new PclZip($file);
@ -517,42 +515,47 @@ function unzip_file($file, $to) {
if ( 0 == count($archive_files) )
return new WP_Error('empty_archive', __('Empty archive.'));
$path = explode('/', untrailingslashit($to));
for ( $i = count($path); $i > 0; $i-- ) { //>0 = first element is empty allways for paths starting with '/'
$tmppath = implode('/', array_slice($path, 0, $i) );
if ( $fs->is_dir($tmppath) ) { //Found the highest folder that exists, Create from here(ie +1)
for ( $i = $i + 1; $i <= count($path); $i++ ) {
$tmppath = implode('/', array_slice($path, 0, $i) );
if ( ! $fs->mkdir($tmppath, FS_CHMOD_DIR) )
return new WP_Error('mkdir_failed', __('Could not create directory.'), $tmppath);
}
break; //Exit main for loop
}
}
$needed_dirs = array();
$to = trailingslashit($to);
foreach ($archive_files as $file) {
$path = $file['folder'] ? $file['filename'] : dirname($file['filename']);
$path = explode('/', $path);
for ( $i = count($path); $i >= 0; $i-- ) { //>=0 as the first element contains data
// Determine any parent dir's needed (of the upgrade directory)
if ( ! $wp_filesystem->is_dir($to) ) { //Only do parents if no children exist
$path = preg_split('![/\\\]!', untrailingslashit($to));
for ( $i = count($path); $i >= 0; $i-- ) {
if ( empty($path[$i]) )
continue;
$tmppath = $to . implode('/', array_slice($path, 0, $i) );
if ( $fs->is_dir($tmppath) ) {//Found the highest folder that exists, Create from here
for ( $i = $i + 1; $i <= count($path); $i++ ) { //< count() no file component please.
$tmppath = $to . implode('/', array_slice($path, 0, $i) );
if ( ! $fs->is_dir($tmppath) && ! $fs->mkdir($tmppath, FS_CHMOD_DIR) )
return new WP_Error('mkdir_failed', __('Could not create directory.'), $tmppath);
}
break; //Exit main for loop
$dir = implode('/', array_slice($path, 0, $i+1) );
if ( preg_match('!^[a-z]:$!i', $dir) ) // Skip it if it looks like a Windows Drive letter only.
continue;
if ( ! $wp_filesystem->is_dir($dir) )
$needed_dirs[] = $dir;
else
break; // A folder exists, therefor, we dont need the check the levels below this
}
}
// We've made sure the folders are there, so let's extract the file now:
if ( ! $file['folder'] ) {
if ( !$fs->put_contents( $to . $file['filename'], $file['content'], FS_CHMOD_FILE) )
return new WP_Error('copy_failed', __('Could not copy file.'), $to . $file['filename']);
// Determine any children directories needed (From within the archive)
foreach ( $archive_files as $file )
$needed_dirs[] = $to . untrailingslashit( $file['folder'] ? $file['filename'] : dirname($file['filename']) );
$needed_dirs = array_unique($needed_dirs);
asort($needed_dirs);
// Create those directories if need be:
foreach ( $needed_dirs as $_dir ) {
if ( ! $wp_filesystem->mkdir($_dir, FS_CHMOD_DIR) && ! $wp_filesystem->is_dir($_dir) ) // Only check to see if the Dir exists upon creation failure. Less I/O this way.
return new WP_Error('mkdir_failed', __('Could not create directory.'), $_dir);
}
// Extract the files from the zip
foreach ( $archive_files as $file ) {
if ( $file['folder'] )
continue;
if ( ! $wp_filesystem->put_contents( $to . $file['filename'], $file['content'], FS_CHMOD_FILE) )
return new WP_Error('copy_failed', __('Could not copy file.'), $to . $file['filename']);
}
return true;
}