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Feature #306 - Drafting future behaviour upgrade of the function api_get_path().

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skala
Ivan Tcholakov 17 years ago
parent b98e8c295e
commit 8ca6741321
1 changed files with 25 additions and 64 deletions
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  1. 89
      main/inc/lib/main_api.lib.php

89
main/inc/lib/main_api.lib.php
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@ -179,10 +179,11 @@ define('INTL_INSTALLED', function_exists('intl_get_error_code')); // intl extens
define('ICONV_INSTALLED', function_exists('iconv')); // iconv extension, for PHP5 on Windows it is installed by default.
define('MBSTRING_INSTALLED', function_exists('mb_strlen')); // mbstring extension.
// Constants for for api_get_path() and api_get_path_type() - predefined path types.
define('WEB_PATH', 'WEB_PATH');
define('SYS_PATH', 'SYS_PATH');
define('REL_PATH', 'REL_PATH');
// Constants for api_get_path() and api_get_path_type(), etc. - predefined path types.
define('WEB_PATH', 'WEB_PATH'); // Identifies URL type, for example http://www.mydokeos.com/documentation/index.html
define('SYS_PATH', 'SYS_PATH'); // Identifies system path type, for example /var/www/documentation/index.html
define('REL_PATH', 'REL_PATH'); // Identifies semi-absolute URL, for example /documentation/index.html
define('REL_SYS_PATH', 'REL_SYS_PATH'); // Identifies relative system path, examples: documentation/index.html ../../documentation/index.html TODO: Not implemented yet.
define('WEB_SERVER_ROOT_PATH', 'WEB_SERVER_ROOT_PATH');
define('SYS_SERVER_ROOT_PATH', 'SYS_SERVER_ROOT_PATH');
define('WEB_COURSE_PATH', 'WEB_COURSE_PATH');
@ -204,9 +205,12 @@ define('INCLUDE_PATH', 'INCLUDE_PATH');
define('LIBRARY_PATH', 'LIBRARY_PATH');
define('CONFIGURATION_PATH', 'CONFIGURATION_PATH');
define('WEB_LIBRARY_PATH', 'WEB_LIBRARY_PATH');
// Path conversion.
// Constants for requesting path conversion.
define('TO_WEB_PATH', 'TO_WEB_PATH'); // TODO: Not implemented yet.
define('TO_SYS_PATH', 'TO_SYS_PATH');
// Path detection.
define('TO_REL_PATH', 'TO_REL_PATH'); // TODO: Not implemented yet.
define('TO_REL_SYS_PATH', 'TO_REL_SYS_PATH'); // TODO: Not implemented yet.
// Path type detection.
define('VALID_WEB_PATH', '/https?:\/\/(.*?):{0,1}([0-9]*)(\/)(.*?)/i');
/*
@ -450,14 +454,28 @@ function api_get_path($path_type, $path = null) {
}
}
/**
* Detects the type of a given path, which fron server's side may be:
* - absolute URL - WEB_PATH, for example http://www.mydokeos.com/documentation/index.html
* - semi-absolute URL - REL_PATH, for example /documentation/index.html
* - system path - SYS_PATH, for example /var/www/documentation/index.htm
* - relative system path - REL_SYS_PATH, examples: documentation/index.html ../../documentation/index.html
* @param string $path The given path to be detected.
* @return string Returns one of the following constants: WEB_PATH, REL_PATH, SYS_PATH, REL_SYS_PATH.
*/
function api_get_path_type($path) {
if (preg_match(VALID_WEB_PATH, $path)) {
return WEB_PATH;
}
// TODO: System files to be detected.
// TODO: Detection of other path types to be implemented.
return REL_PATH;
}
/**
* Checks whether a given path is a web-path type (a URL).
* @param string $path The given path to be checked.
* @return bool Returns true when the path is web-path type, false otherwise.
*/
function api_is_web_path($path) {
return api_get_path_type($path) == WEB_PATH;
}
@ -3538,61 +3556,4 @@ function is_allowed_to_edit() {
*/
function api_url_to_local_path($url) {
return api_get_path(TO_SYS_PATH, $url);
/*
// Check for a valid URL.
if (!preg_match('/https?:\/\/(.*?):{0,1}([0-9]*)(\/)(.*?)/i', $url)) {
return $url; // Return non-URLs without modifications.
}
$original_url = $url;
$url = urldecode($url);
// A special case:
// If the URL points the document download script directly (without mod-rewrite translation),
// we will translate this URL into a simple one, in order to process it easy below.
// For example:
// http://localhost/dokeos/main/document/download.php?doc_url=/image.png&cDir=/
// becomes
// http://localhost/dokeos/courses/TEST/document/image.png
//
if (preg_match('/(.*)main\/document\/download.php\?doc_url=\/(.*)&cDir=\/(.*)?/', $url, $matches)) {
global $_cid, $_course;
if (!empty($_cid) and $_cid != -1 and isset($_course)) { // Inside a course?
$url = $matches[1].'courses/'.$_course['path'].'/document/'.str_replace('//', '/', $matches[3].'/'.$matches[2]);
} else {
return $original_url; // Not inside a course, return then the URL "as is".
}
}
// Generally, we have to deal with URLs like this:
// http://localhost/dokeos/courses/TEST/document/image.png?cidReq=TEST
// Let us remove possibe URL's parameters:
// http://localhost/dokeos/courses/TEST/document/image.png
$tmp = explode('?', $url);
$array_url = explode ('/', $tmp[0]);
// Pulling out the filename image.png
// The rest of the URL is http://localhost/dokeos/courses/TEST/document
$file_name = array_pop($array_url);
// api_get_path(WEB_PATH) returns for example http://localhost/dokeos/
$array_web_path = explode ('/', api_get_path(WEB_PATH));
// Getting the relative system path.
// http://localhost/dokeos/courses/TEST/document
// http://localhost/dokeos/
// ---------------------------------------------
// courses/TEST/document
$array_local_path = array_values(array_diff($array_url, $array_web_path));
$local_path = implode('/', $array_local_path);
// Sanity check - you may have seen this comment in dokeos/main/document/download.php:
//mod_rewrite can change /some/path/ to /some/path// in some cases, so clean them all off (René)
// Let us remove double slashes, if any (triple too, etc.).
$local_path = preg_replace('@/{2,}@', '/', $local_path);
// Finally, we will concatenate: the system root (for example /var/www/), the relative system path, and the file name.
// /var/www/courses/TEST/document/image.png
return str_replace("\\", '/', api_get_path(SYS_PATH)).(empty($local_path) ? '' : $local_path.'/').$file_name;
*/
}

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