From aafc3e4b11d0a19825c9797f5e41b75dfab821fb Mon Sep 17 00:00:00 2001
From: Ivan Tcholakov <ivantcholakov@gmail.com>
Date: Sat, 6 Jun 2009 00:03:51 +0200
Subject: [PATCH] [svn r21272] FS#306 - Introducing more function in the file
 system API.

---
 main/inc/lib/filesystem_api.lib.php | 95 ++++++++++++++++++++++++++++-
 1 file changed, 93 insertions(+), 2 deletions(-)

diff --git a/main/inc/lib/filesystem_api.lib.php b/main/inc/lib/filesystem_api.lib.php
index 6285f2f638..ac60f856c1 100644
--- a/main/inc/lib/filesystem_api.lib.php
+++ b/main/inc/lib/filesystem_api.lib.php
@@ -22,18 +22,99 @@
  * character set.
  */
 
+/**
+ * This function attempts to change the mode of the specified file.
+ * @param string $filename		Path to the file.
+ * @param int $mode				Access mode, usually given as octal value, examples: 0777, 0770, 0755, 0644.
+ * @return bool					Returns TRUE on success or FALSE on failure.
+ * @link http://php.net/chmod
+ */
+function api_chmod($filename, $mode) {
+	return chmod(api_file_system_encode($filename), $mode);
+}
+
+/**
+ * Makes a copy of the file $source to $destination.
+ * @param string $source		Path to the source file.
+ * @param string $destination	The destination path.
+ * @param resource $context		A valid context resource created with stream_context_create().
+ * @return bool					Returns TRUE on success or FALSE on failure.
+ * Note: If the destination file already exists, it will be overwritten.
+ * @link http://php.net/copy
+ */
+function api_copy($source, $destination, $context = null) {
+	$source = api_is_system_path($source) ? api_file_system_encode($source) : $source;
+	$destination = api_is_system_path($destination) ? api_file_system_encode($destination) : $destination;
+	if (func_num_args() <= 2) {
+		return copy($source, $destination);
+	}
+	return copy($source, $destination, $context);
+}
+
+/**
+ * Checks whether a file or directory exists.
+ * @param string $path	Path to the file or directory.
+ * @return bool			Returns TRUE if the specified file or directory exists, FALSE otherwise.
+ * @link http://php.net/manual/en/function.file-exists.php
+ */
+function api_file_exists($path) {
+	return file_exists(api_is_system_path($path) ? api_file_system_encode($path) : $path);
+}
+
+/**
+ * Gets the size for the given file.
+ * @param string $filename		Path to the file.
+ * @return int					Returns the size of the file in bytes, or FALSE in case of an error.
+ * @link http://php.net/manual/en/function.filesize.php
+ */
+function api_filesize($filename) {
+	return filesize(api_is_system_path($filename) ? api_file_system_encode($filename) : $filename);
+}
+
+/**
+ * This function opens file or URL, i.e. it binds a named resource, specified by filename, to a stream.
+ * @param string $filename			The named resource, file or URL.
+ * @param string $mode				Specifies the type of access required to the stream.
+ * @param bool $use_include_path	If '1' or TRUE the file will be searched in the include_path too.
+ * @param resource $context			A valid context resource created with stream_context_create().
+ * @return resource					Returns a file pointer resource on success, or FALSE on error.
+ * @link http://php.net/manual/en/function.fopen.php
+ */
+function api_fopen($filename, $mode, $use_include_path = false, $context = null) {
+	$filename = api_is_system_path($filename) ? api_file_system_encode($filename) : $filename;
+	$count = func_num_args();
+	if ($count <= 2) {
+		return fopen($filename, $mode);
+	}
+	elseif ($count == 3) {
+		return fopen($filename, $mode, $use_include_path);
+	}
+	return fopen($filename, $mode, $use_include_path, $context);
+}
+
 /**
  * Checks whether a given path represents a directory (folder).
- * @param string		The path to be checked.
+ * @param string $path	The path to be checked.
  * @return bool			Returns TRUE if we have a directory, FALSE otherwise.
+ * @link http://php.net/is_dir
  */
 function api_is_dir($path) {
 	return is_dir(api_is_system_path($path) ? api_file_system_encode($path) : $path);
 }
 
+/**
+ * Checks whether a given path represents a file.
+ * @param string $path	The path to be checked.
+ * @return bool			Returns TRUE if we have a file, FALSE otherwise.
+ * @link http://php.net/is_file
+ */
+function api_is_file($path) {
+	return is_file(api_is_system_path($path) ? api_file_system_encode($path) : $path);
+}
+
 /**
  * Checks whether a given path represents a system (local) file or folder.
- * @param string		The path to be checked.
+ * @param string $path	The path to be checked.
  * @return bool			Returns TRUE if we have a system path, FALSE otherwise.
  */
 function api_is_system_path($path) {
@@ -51,4 +132,14 @@ function api_mime_content_type($filename) {
 	return mime_content_type(api_file_system_encode($filename));
 }
 
+/**
+ * This function moves an uploaded file to a new location.
+ * @param string $filename		The filename of the uploaded file.
+ * @param string $destination	The destination of the moved file.
+ * @return bool					If the specified file is not a valid upload file or it cannot be moved for some reason, the function will return FALSE.
+ */
+function api_move_uploaded_file($filename, $destination) {
+	return move_uploaded_file(api_file_system_encode($filename), api_file_system_encode($destination));
+}
+
 ?>