diff options
Diffstat (limited to 'system/helpers/file_helper.php')
| -rw-r--r-- | system/helpers/file_helper.php | 181 |
1 files changed, 174 insertions, 7 deletions
diff --git a/system/helpers/file_helper.php b/system/helpers/file_helper.php index 04c5747bf..1eb8348e9 100644 --- a/system/helpers/file_helper.php +++ b/system/helpers/file_helper.php @@ -40,7 +40,7 @@ if (! function_exists('read_file')) {
function read_file($file)
{
- if ( ! file_exists($file))
+ if (! file_exists($file))
{
return FALSE;
}
@@ -50,7 +50,7 @@ if (! function_exists('read_file')) return file_get_contents($file);
}
- if ( ! $fp = @fopen($file, 'rb'))
+ if (! $fp = @fopen($file, 'rb'))
{
return FALSE;
}
@@ -87,7 +87,7 @@ if (! function_exists('write_file')) {
function write_file($path, $data, $mode = 'wb')
{
- if ( ! $fp = @fopen($path, $mode))
+ if (! $fp = @fopen($path, $mode))
{
return FALSE;
}
@@ -123,7 +123,7 @@ if (! function_exists('delete_files')) // Trim the trailing slash
$path = preg_replace("|^(.+?)/*$|", "\\1", $path);
- if ( ! $current_dir = @opendir($path))
+ if (! $current_dir = @opendir($path))
return;
while(FALSE !== ($filename = @readdir($current_dir)))
@@ -167,7 +167,7 @@ if (! function_exists('get_filenames')) {
function get_filenames($source_dir, $include_path = FALSE, $_recursion = FALSE)
{
- static $_filedata = array();
+ $_filedata = array();
if ($fp = @opendir($source_dir))
{
@@ -180,11 +180,11 @@ if (! function_exists('get_filenames')) while (FALSE !== ($file = readdir($fp)))
{
- if (@is_dir($source_dir.$file) && substr($file, 0, 1) != '.')
+ if (@is_dir($source_dir.$file) && strncmp($file, '.', 1) !== 0)
{
get_filenames($source_dir.$file.DIRECTORY_SEPARATOR, $include_path, TRUE);
}
- elseif (substr($file, 0, 1) != ".")
+ elseif (strncmp($file, '.', 1) !== 0)
{
$_filedata[] = ($include_path == TRUE) ? $source_dir.$file : $file;
@@ -201,4 +201,171 @@ if (! function_exists('get_filenames')) // --------------------------------------------------------------------
+/**
+ * Get Directory File Information
+ *
+ * Reads the specified directory and builds an array containing the filenames,
+ * filesize, dates, and permissions
+ *
+ * Any sub-folders contained within the specified path are read as well.
+ *
+ * @access public
+ * @param string path to source
+ * @param bool whether to include the path as part of the filename
+ * @param bool internal variable to determine recursion status - do not use in calls
+ * @return array
+ */
+if (! function_exists('get_dir_file_info'))
+{
+ function get_dir_file_info($source_dir, $include_path = FALSE, $_recursion = FALSE)
+ {
+ $_filedata = array();
+ $relative_path = $source_dir;
+
+ if ($fp = @opendir($source_dir))
+ {
+ // reset the array and make sure $source_dir has a trailing slash on the initial call
+ if ($_recursion === FALSE)
+ {
+ $_filedata = array();
+ $source_dir = rtrim(realpath($source_dir), DIRECTORY_SEPARATOR).DIRECTORY_SEPARATOR;
+ }
+
+ while (FALSE !== ($file = readdir($fp)))
+ {
+ if (@is_dir($source_dir.$file) && strncmp($file, '.', 1) !== 0)
+ {
+ get_dir_file_info($source_dir.$file.DIRECTORY_SEPARATOR, $include_path, TRUE);
+ }
+ elseif (strncmp($file, '.', 1) !== 0)
+ {
+ $_filedata[$file] = get_file_info($source_dir.$file);
+ $_filedata[$file]['relative_path'] = $relative_path;
+ }
+ }
+ return $_filedata;
+ }
+ else
+ {
+ return FALSE;
+ }
+ }
+}
+
+// --------------------------------------------------------------------
+
+/**
+* Get File Info
+*
+* Given a file and path, returns the name, path, size, date modified
+* Second parameter allows you to explicitly declare what information you want returned
+* Options are: name, server_path, size, date, readable, writable, executable, fileperms
+* Returns FALSE if the file cannot be found.
+*
+* @access public
+* @param string path to file
+* @param mixed array or comma separated string of information returned
+* @return array
+*/
+if (! function_exists('get_file_info'))
+{
+ function get_file_info($file, $returned_values = array('name', 'server_path', 'size', 'date'))
+ {
+
+ if (! file_exists($file))
+ {
+ return FALSE;
+ }
+
+ if (is_string($returned_values))
+ {
+ $returned_values = explode(',', $returned_values);
+ }
+
+ foreach ($returned_values as $key)
+ {
+ switch ($key)
+ {
+ case 'name':
+ $fileinfo['name'] = substr(strrchr($file, '/'), 1);
+ break;
+ case 'server_path':
+ $fileinfo['server_path'] = $file;
+ break;
+ case 'size':
+ $fileinfo['size'] = filesize($file);
+ break;
+ case 'date':
+ $fileinfo['date'] = filectime($file);
+ break;
+ case 'readable':
+ $fileinfo['readable'] = is_readable($file);
+ break;
+ case 'writable':
+ // There are known problems using is_weritable on IIS. It may not be reliable - consider fileperms()
+ $fileinfo['writable'] = is_writable($file);
+ break;
+ case 'executable':
+ $fileinfo['executable'] = is_executable($file);
+ break;
+ case 'fileperms':
+ $fileinfo['fileperms'] = fileperms($file);
+ break;
+ }
+ }
+
+ return $fileinfo;
+ }
+}
+
+// --------------------------------------------------------------------
+
+/**
+ * Get Mime by Extension
+ *
+ * Translates a file extension into a mime type based on config/mimes.php.
+ * Returns FALSE if it can't determine the type, or open the mime config file
+ *
+ * Note: this is NOT an accurate way of determining file mime types, and is here strictly as a convenience
+ * It should NOT be trusted, and should certainly NOT be used for security
+ *
+ * @access public
+ * @param string path to file
+ * @return mixed
+ */
+if (! function_exists('get_mime_by_extension'))
+{
+ function get_mime_by_extension($file)
+ {
+ $extension = substr(strrchr($file, '.'), 1);
+
+ global $mimes;
+
+ if (! is_array($mimes))
+ {
+ if (! require_once(APPPATH.'config/mimes.php'))
+ {
+ return FALSE;
+ }
+ }
+
+ if (array_key_exists($extension, $mimes))
+ {
+ if (is_array($mimes[$extension]))
+ {
+ // Multiple mime types, just give the first one
+ return current($mimes[$extension]);
+ }
+ else
+ {
+ return $mimes[$extension];
+ }
+ }
+ else
+ {
+ return FALSE;
+ }
+ }
+}
+
?>
\ No newline at end of file |