legacy-dotfiles/emacs.d/nxhtml/tests/in/bug381979-svnlib.inc

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<?php
// $Id$
/**
* @file
* A few generic functions for interfacing with Subversion via command line.
* The API of these functions has been inspired by the SVN PECL extension
* (http://www.php.net/manual/en/ref.svn.php), but works differently in places.
* On the one hand, this is due to the incompleteness of the functions in here,
* and on the other hand there are a few artificial restrictions and
* complications in the PECL extension's API that we can really do without.
*
* @note
* These functions can be run *without* Drupal.
*
* Copyright 2008 by Jakob Petsovits ("jpetso", http://drupal.org/user/56020)
* Copyright 2006-2008 by Gavin Mogan ("halkeye", http://drupal.org/user/56779)
*/
// file_directory_temp() is normally provided by Drupal, but as this file is
// supposed to be independent from Drupal code, here's a fallback definition.
if (!function_exists('file_directory_temp')) {
/**
* Determine the default temporary directory.
*
* @return A string containing a temp directory.
*/
function file_directory_temp() {
return sys_get_temp_dir();
}
}
/**
* If subsequent function calls from this file act on a private repository
* that requires authentication, this function will store username and password
* for the duration of the current process (in a static variable, that is).
* Other functions in this file make use of this login information.
*/
function svnlib_set_authentication_info($username, $password) {
_svnlib_authentication_info(
array('username' => $username, 'password' => $password)
);
}
/**
* Unset any username and password that was previously passed
* to subversion_set_authentication_info(), so that subsequent repository
* access will happen anonymously again.
*/
function svnlib_unset_authentication_info() {
_svnlib_authentication_info(FALSE);
}
/**
* Append the option for our custom config dir to a $cmd array,
* and also username and password if those have been set before.
*/
function _svnlib_add_common_options(&$cmd) {
$auth_info = _svnlib_authentication_info();
if (isset($auth_info)) {
$cmd = array_merge($cmd, array(
'--username', escapeshellarg($auth_info['username']),
'--password', escapeshellarg($auth_info['password']),
));
}
$cmd[] = '--config-dir '. escapeshellarg(dirname(__FILE__) .'/configdir');
}
/**
* Write or retrieve the authentication info state, stored in a static variable.
*
* @param $info
* NULL to retrieve the info, FALSE to unset it, or an array with array keys
* 'username' and 'password' to remember it for later retrieval.
*/
function _svnlib_authentication_info($info = NULL) {
static $auth_info = NULL;
if (!isset($info)) {
return $auth_info;
}
else {
$auth_info = ($info === FALSE) ? NULL : $info;
return $auth_info;
}
}
/**
* By default, Subversion will be invoked with the 'svn' binary which is
* alright as long as the binary is in the PATH. If it's not, you can call
* this function to set a different path to the binary (which will be used
* until this process finishes, or until a new path is set).
*/
function svnlib_set_svn_binary($svn_binary) {
_svnlib_svn_binary($svn_binary);
}
/**
* Write or retrieve the path of the svn binary, stored in a static variable.
*
* @param $svn_binary
* NULL to retrieve the info, or the path to the binary to remember it
* for later retrieval.
*/
function _svnlib_svn_binary($svn_binary = NULL) {
static $binary = 'svn';
if (!isset($svn_binary)) {
return $binary;
}
$binary = $svn_binary;
return $binary;
}
/**
* Retrieve the version of the svn binary, and return an array with the keys
* 'major', 'minor' and 'patch', each containing the integer for the respective
* part of the version number. If invoking the SVN executable fails, an empty
* array is returned.
*/
function svnlib_version() {
static $version;
if (isset($version)) {
return $version;
}
$return_code = 0;
exec(_svnlib_svn_binary() .' --version', $output, $return_code);
if ($return_code != 0) {
$version = array();
return $version;
}
$line = reset($output); // The first line contains the version number.
if (!preg_match('/\b([\d]+)\.([\d]+)(?:\.([\d]+))?/', $line, $matches)) {
$version = array();
return $version;
}
$version = array(
'major' => (int) $matches[1],
'minor' => (int) $matches[2],
'patch' => empty($matches[3]) ? 0 : (int) $matches[3],
);
return $version;
}
/**
* Append an appropriate output pipe to a $cmd array, which causes STDERR
* to be written to a random file.
*
* @return
* An array with the temporary files that will be created when $cmd
* is executed. In its current form, the return array only contains
* the filename for STDERR output as 'stderr' array element.
*/
function _svnlib_add_output_pipes(&$cmd) {
$tempdir = file_directory_temp();
$tempfiles = array(
'stderr' => $tempdir .'/drupal_versioncontrol_svn.stderr.'. mt_rand() .'.txt',
);
$cmd[] = '2> '. $tempfiles['stderr'];
return $tempfiles;
}
/**
* Delete temporary files that have been created by a command which included
* output pipes from _svnlib_add_output_pipes().
*/
function _svnlib_delete_temporary_files($tempfiles) {
@unlink($tempfiles['stderr']);
}
/**
* Read the STDERR output for a command that was executed.
* The output must have been written to a temporary file which was given
* by _svnlib_add_output_pipes(). The temporary file is deleted after it
* has been read. After calling the function, the error message can be
* retrieved by calling svnlib_last_error_message() or discarded by calling
* svnlib_unset_error_message().
*/
function _svnlib_set_error_message($tempfiles) {
_svnlib_error_message(file_get_contents($tempfiles['stderr']));
@unlink($tempfiles['stderr']);
}
/**
* Retrieve the STDERR output from the last invocation of 'svn' that exited
* with a non-zero status code. After fetching the error message, it will be
* unset again until a subsequent 'svn' invocation fails as well. If no message
* is set, this function returns NULL.
*
* For better security, it is advisable to run the returned error message
* through check_plain() or similar string checker functions.
*/
function svnlib_last_error_message() {
$message = _svnlib_error_message();
_svnlib_error_message(FALSE);
return $message;
}
/**
* Write or retrieve an error message, stored in a static variable.
*
* @param $info
* NULL to retrieve the message, FALSE to unset it, or a string containing
* the new message to remember it for later retrieval.
*/
function _svnlib_error_message($message = NULL) {
static $error_message = NULL;
if (!isset($message)) {
return $error_message;
}
else {
$error_message = ($message === FALSE) ? NULL : $message;
return $error_message;
}
}
/**
* Return commit log messages of a repository URL. This function is equivalent
* to 'svn log -v -r $revision_range $repository_url'.
*
* @param $repository_url
* The URL of the repository (e.g. 'file:///svnroot/my-repo') or an item
* inside that repository (e.g. 'file:///svnroot/my-repo/subdir/hello.php').
* @param $revision_range
* The revision specification that will be passed to 'svn log' as the
* '-r' parameter. Examples: '35' for a specific revision, 'HEAD:35' for all
* revisions since (and including) r35, or the default parameter 'HEAD:1'
* for all revisions of the given URL. If you specify the more recent
* revision first (e.g. 'HEAD:1') then it will also be first in the
* result array, whereas if you specify the older revision first ('1:HEAD')
* then you'll get a result array with an ascending sort, the most
* recent revision being the last array element.
* @param $url_revision
* The revision of the URL that should be listed.
* This needs to be a single revision, e.g. '35' or 'HEAD'.
* For example, if a file was deleted in revision 36, you need to pass '35'
* as parameter to get its log, otherwise Subversion won't find the file.
*
* @return
* An array of detailed information about the revisions that exist
* in the given URL at the specified revision or revision range.
* Each revision detail array has the revision number as array key.
* If the 'svn log' invocation exited with an error, this function
* returns NULL and the error message can be retrieved by calling
* svnlib_last_error_message().
*/
function svnlib_log($repository_url, $revision_range = 'HEAD:1', $url_revision = 'HEAD') {
$cmd = array(
escapeshellarg(escapeshellcmd(_svnlib_svn_binary())),
'log',
'-r', $revision_range,
'--non-interactive',
'--xml',
'-v',
);
_svnlib_add_common_options($cmd);
$cmd[] = escapeshellarg($repository_url .'@'. $url_revision);
$tempfiles = _svnlib_add_output_pipes($cmd);
$return_code = 0;
exec(implode(' ', $cmd), $output, $return_code);
if ($return_code != 0) {
_svnlib_set_error_message($tempfiles);
return NULL; // no such revision(s) found
}
$log = implode("\n", $output);
_svnlib_delete_temporary_files($tempfiles);
return _svnlib_parse_log($log);
}
/*
* Parse the output of 'svn log' into an array of log entries.
* The output looks something like this (0 to N possible "logentry" elements):
<?xml version="1.0"?>
<log>
<logentry revision="272">
<author>jpetso</author>
<date>2007-04-12T15:01:00.247137Z</date>
<paths>
<path action="M">/trunk/lila/kde/scalable/apps/ktorrent.svg</path>
<path action="A">/trunk/lila/kde/scalable/devices/laptop.svg</path>
<path copyfrom-path="/trunk/lila/kde/scalable/devices/pda_black.svg"
copyfrom-rev="270"
action="A">/trunk/lila/kde/scalable/devices/pda_blue.svg</path>
<path action="R">/trunk/lila/kde/scalable/devices/ipod_unmount.svg</path>
<path action="D">/trunk/lila/kde/ChangeLog</path>
</paths>
<msg>New laptop icon from the GNOME set, more moderate
colors in ktorrent.svg, and bits of devices stuff.
</msg>
</logentry>
</log>
*/
function _svnlib_parse_log($log) {
$revisions = array();
$xml = new SimpleXMLElement($log);
foreach ($xml->logentry as $logentry) {
$revision = array();
$revision['rev'] = intval((string) $logentry['revision']);
$revision['author'] = (string) $logentry->author;
$revision['msg'] = rtrim((string) $logentry->msg); // no trailing linebreaks
$revision['time_t'] = strtotime((string) $logentry->date);
$paths = array();
foreach ($logentry->paths->path as $logpath) {
$path = array(
'path' => (string) $logpath,
'action' => (string) $logpath['action'],
);
if (!empty($logpath['copyfrom-path'])) {
$path['copyfrom'] = array(
'path' => (string) $logpath['copyfrom-path'],
'rev' => (string) $logpath['copyfrom-rev'],
);
}
$paths[$path['path']] = $path;
}
$revision['paths'] = $paths;
$revisions[$revision['rev']] = $revision;
}
return $revisions;
}
/**
* Return the contents of a directory (specified as repository URL,
* optionally at a certain revision) as an array of items. This function
* is equivalent to 'svn ls $repository_url@$revision'.
*
* @param $repository_url
* The URL of the repository (e.g. 'file:///svnroot/my-repo') or an item
* inside that repository (e.g. 'file:///svnroot/my-repo/subdir').
* @param $url_revision
* The revision of the URL that should be listed.
* This needs to be a single revision, e.g. '35' or 'HEAD'.
* For example, if a file was deleted in revision 36, you need to pass '35'
* as parameter to get its listing, otherwise Subversion won't find the file.
* @param $recursive
* FALSE to retrieve just the direct child items of the current directory,
* or TRUE to descend into each subdirectory and retrieve all descendant
* items recursively. If $recursive is true then each directory item
* in the result array will have an additional array element 'children'
* which contains the list entries below this directory, as array keys
* in the result array.
*
* If @p $repository_url refers to a file then the @p $recursive parameter
* has no effect on the 'svn ls' output and, by consequence, on the
* return value.
*
* @return
* A array of items. If @p $repository_url refers to a file then the array
* contains a single entry with this file, whereas if @p $repository_url
* refers to a directory then the array contains all items inside this
* directory (but not the directory itself).
* If the 'svn ls' invocation exited with an error, this function
* returns NULL and the error message can be retrieved by calling
* svnlib_last_error_message().
*/
function svnlib_ls($repository_url, $url_revision = 'HEAD', $recursive = FALSE) {
$cmd = array(
escapeshellarg(escapeshellcmd(_svnlib_svn_binary())),
'ls',
'--non-interactive',
'--xml',
);
if ($recursive) {
$cmd[] = '-R';
}
_svnlib_add_common_options($cmd);
$cmd[] = escapeshellarg($repository_url .'@'. $url_revision);
$tempfiles = _svnlib_add_output_pipes($cmd);
$return_code = 0;
exec(implode(' ', $cmd), $output, $return_code);
if ($return_code != 0) {
_svnlib_set_error_message($tempfiles);
return NULL; // no such item or revision found
}
$lists = implode("\n", $output);
_svnlib_delete_temporary_files($tempfiles);
return _svnlib_parse_ls($lists, $recursive);
}
/*
* Parse the output of 'svn ls' into an array of item entries.
* The output looks something like this (0 to N possible "entry" elements):
<?xml version="1.0"?>
<lists>
<list path="file:///home/jakob/repos/svn/lila-theme/tags/svg-utils-0-1/utils/svg-utils/svgcolor-xml">
<entry kind="dir">
<name>lila</name>
<commit revision="257">
<author>jpetso</author>
<date>2006-11-29T01:27:47.192716Z</date>
</commit>
</entry>
<entry kind="file">
<name>lila/lila-blue.xml</name>
<size>918</size>
<commit revision="9">
<author>dgt84</author>
<date>2004-05-04T21:32:13.000000Z</date>
</commit>
</entry>
</list>
</lists>
*/
function _svnlib_parse_ls($lists, $recursive) {
$items = array();
$current_item_stack = array(); // will help us determine hierarchical structures
$xml = new SimpleXMLElement($lists);
foreach ($xml->list->entry as $entry) {
$item = array();
$item['created_rev'] = intval((string) $entry->commit['revision']);
$item['last_author'] = (string) $entry->commit->author;
$item['time_t'] = strtotime((string) $entry->commit->date);
$relative_path = (string) $entry->name;
$item['name'] = basename($relative_path);
$item['type'] = (string) $entry['kind'];
if ($item['type'] == 'file') {
$item['size'] = intval((string) $entry->size);
}
// When listing recursively, we want to capture the item hierarchy.
if ($recursive) {
if ($item['type'] == 'dir') {
$item['children'] = array();
}
if (strpos($relative_path, '/') !== FALSE) { // don't regard top-level items
$parent_path = dirname($relative_path);
if (isset($items[$parent_path]) && !in_array($relative_path, $items[$parent_path]['children'])) {
$items[$parent_path]['children'][] = $relative_path;
}
}
}
$items[$relative_path] = $item;
}
return $items;
}
/**
* Returns detail information about a directory or file item in the repository.
* In most cases, svnlib_info() is the better svnlib_ls(), as it retrieves not
* only item names but also repository root and the path of each item
* inside the repository.
*
* You can also use svnlib_info() to retrieve a former item path if the item
* has been moved or copied: just pass the current URL and revision together
* with a past or future revision number as @p $target_revision, and you get
* the path of the item at that time.
*
* This function is equivalent to
* 'svn info -r $target_revision $repository_url@$url_revision'.
*
* @param $repository_urls
* The URL of the item (e.g. 'file:///svnroot/my-repo/subdir/hello.php')
* or the repository itself (e.g. 'file:///svnroot/my-repo'), as string.
* Alternatively, you can also pass an array of multiple URLs.
* @param $url_revision
* The revision of the URL that should be listed.
* This needs to be a single revision, e.g. '35' or 'HEAD'.
* For example, if a file was deleted in revision 36, you need to pass '35'
* as parameter to get its info, otherwise Subversion won't find the file.
* In case multiple URLs are passed, this revision applies to each of them.
* @param $depth
* Specifies if info for descendant items should be retrieved as well, and
* if so, which of those. The default 'empty' will not retrieve any children,
* 'files' will retrieve all immediate file children, 'immediates' will
* retrieve file and directory children, and 'infinity' will retrieve all
* descendant items there are, recursively. If $depth is 'infinity' then each
* directory item in the result array will have an additional array element
* named 'children' which contains the paths below this directory, the paths
* corresponding to array keys in the result array.
*
* If @p $repository_url refers to a file then the @p $depth parameter
* has no effect on the 'svn info' output and, by consequence, on the
* return value.
*
* @param $target_revision
* The revision specification that will be passed to 'svn info' as the
* '-r' parameter. This needs to be a single revision, e.g. '35' or 'HEAD'.
* This is handy to track item copies and renames, see the general function
* description on how to do that. If you leave this at NULL, the info will be
* retrieved at the state of the $url_revision.
*
* @return
* A array of items that contain information about the items that correspond
* the specified URL(s). If @p $repository_url refers to a directory and
* @p $depth is 'infinity', the array also includes information about all
* descendants of the items that correspond to the specified URL(s).
* If the 'svn info' invocation exited with an error, this function
* returns NULL and the error message can be retrieved by calling
* svnlib_last_error_message().
*/
function svnlib_info($repository_urls, $url_revision = 'HEAD', $depth = 'empty', $target_revision = NULL) {
if (!is_array($repository_urls)) { // it's a single URL as a string!
$repository_urls = array($repository_urls);
}
$cmd = array(
escapeshellarg(escapeshellcmd(_svnlib_svn_binary())),
'info',
'--non-interactive',
'--xml',
);
if ($depth == 'infinity') {
$cmd[] = '-R'; // "--depth infinity" is not in 1.4, but '-R' (recursive) is
}
elseif ($depth != 'empty') {
$version = svnlib_version();
if ($version['major'] >= 1 && $version['minor'] >= 5) {
$cmd[] = '--depth '. $depth;
}
else { // 1.4 and earlier compatibility workaround
foreach ($repository_urls as $repository_url) {
// Make sure the item is a directory, otherwise it has no children
// anyways (and the relative path fetched by ls will lead to incorrect
// results as it duplicates the basename that is already in the URL).
$repository_url_items = svnlib_info($repository_url, $url_revision, 'empty', $target_revision);
$repository_url_item = reset($repository_url_items);
if ($repository_url_item['type'] != 'dir') {
continue;
}
// Fetch child items with svn ls, that's what 1.4 can actually do.
$items = svnlib_ls($repository_url, $url_revision);
foreach ($items as $relative_path => $item) {
if ($depth == 'files' && $item['type'] = 'dir') {
continue; // 'immediates' fetches all children, 'files' only files
}
$repository_urls[] = $repository_url .'/'. $relative_path;
}
}
}
}
// else {
// "--depth empty" is the default, leave it out for svn <= 1.4 compatibility
// }
if (isset($target_revision)) {
$cmd[] = '-r';
$cmd[] = $target_revision;
}
_svnlib_add_common_options($cmd);
foreach ($repository_urls as $repository_url) {
$cmd[] = escapeshellarg($repository_url .'@'. $url_revision);
}
$tempfiles = _svnlib_add_output_pipes($cmd);
$return_code = 0;
exec(implode(' ', $cmd), $output, $return_code);
if ($return_code != 0) {
_svnlib_set_error_message($tempfiles);
return NULL; // no such item or revision found
}
$info = implode("\n", $output);
_svnlib_delete_temporary_files($tempfiles);
$recursive = ($depth == 'infinity');
return _svnlib_parse_info($info, $recursive);
}
/*
* Parse the output of 'svn info' into an array of item entries.
* The output looks something like this (same URL as in the 'svn ls' example,
* also 0 to N possible "entry" elements):
<?xml version="1.0"?>
<info>
<entry kind="dir" path="svgcolor-xml" revision="275">
<url>file:///home/jakob/repos/svn/lila-theme/tags/svg-utils-0-1/utils/svg-utils/svgcolor-xml</url>
<repository>
<root>file:///home/jakob/repos/svn/lila-theme</root>
<uuid>fd53868f-e4f1-0310-84ca-8663aff3ef64</uuid>
</repository>
<commit revision="257">
<author>jpetso</author>
<date>2006-11-29T01:27:47.192716Z</date>
</commit>
</entry>
<entry kind="dir" path="lila" revision="275">
<url>file:///home/jakob/repos/svn/lila-theme/tags/svg-utils-0-1/utils/svg-utils/svgcolor-xml/lila</url>
<repository>
<root>file:///home/jakob/repos/svn/lila-theme</root>
<uuid>fd53868f-e4f1-0310-84ca-8663aff3ef64</uuid>
</repository>
<commit revision="257">
<author>jpetso</author>
<date>2006-11-29T01:27:47.192716Z</date>
</commit>
</entry>
<entry kind="file" path="lila/lila-blue.xml" revision="275">
<url>file:///home/jakob/repos/svn/lila-theme/tags/svg-utils-0-1/utils/svg-utils/svgcolor-xml/lila/lila-blue.xml</url>
<repository>
<root>file:///home/jakob/repos/svn/lila-theme</root>
<uuid>fd53868f-e4f1-0310-84ca-8663aff3ef64</uuid>
</repository>
<commit revision="9">
<author>dgt84</author>
<date>2004-05-04T21:32:13.000000Z</date>
</commit>
</entry>
</info>
*/
function _svnlib_parse_info($info, $recursive) {
$items = array();
$xml = new SimpleXMLElement($info);
foreach ($xml->entry as $entry) {
$item = array();
$item['url'] = (string) $entry->url;
$item['repository_root'] = (string) $entry->repository->root;
$item['repository_uuid'] = (string) $entry->repository->uuid;
if ($item['url'] == $item['repository_root']) {
$item['path'] = '/';
}
else {
$item['path'] = substr($item['url'], strlen($item['repository_root']));
}
if (isset($items[$item['path']])) {
// Duplicate item, we had this one before already. Nevertheless, we can
// perhaps make use of it in order to enhance the hierarchical structure.
$item = $items[$item['path']];
}
else {
$item['type'] = (string) $entry['kind'];
$relative_path = (string) $entry['path'];
$item['rev'] = intval((string) $entry['revision']); // current state of the item
$item['created_rev'] = intval((string) $entry->commit['revision']); // last edit
$item['last_author'] = (string) $entry->commit->author;
$item['time_t'] = strtotime((string) $entry->commit->date);
if ($recursive && $item['type'] == 'dir') {
$item['children'] = array();
}
}
// For "--depth infinity", provide the caller with further hierarchy info.
if ($recursive && $item['path'] != '/') {
$parent_path = dirname($item['path']);
if (isset($items[$parent_path]) && !in_array($item['path'], $items[$parent_path]['children'])) {
$items[$parent_path]['children'][] = $item['path'];
}
}
$items[$item['path']] = $item;
}
return $items;
}
/**
* Copy the contents of a file in a repository to a given destination.
* This function is equivalent to
* 'svn cat $repository_url@$url_revision > $destination'.
*
* @param $destination
* The path of the file that should afterwards contain the file contents.
* @param $repository_url
* The URL of the file, e.g. 'file:///svnroot/my-repo/subdir/hello.php'.
* @param $url_revision
* The revision of the URL that should be queried for the property.
* This needs to be a single revision, e.g. '35' or 'HEAD'.
*
* @return
* TRUE if the file was created successfully. If the 'svn cat' invocation
* exited with an error, this function returns FALSE and the error message
* can be retrieved by calling svnlib_last_error_message().
*/
function svnlib_cat($destination, $repository_url, $url_revision = 'HEAD') {
$cmd = array(
escapeshellarg(escapeshellcmd(_svnlib_svn_binary())),
'cat',
'--non-interactive',
);
_svnlib_add_common_options($cmd);
$cmd[] = escapeshellarg($repository_url .'@'. $url_revision);
$cmd[] = '> '. $destination;
$tempfiles = _svnlib_add_output_pipes($cmd);
$return_code = 0;
exec(implode(' ', $cmd), $output, $return_code);
if ($return_code != 0) {
@unlink($destination);
_svnlib_set_error_message($tempfiles);
return FALSE; // no such item or revision found
}
_svnlib_delete_temporary_files($tempfiles);
return TRUE;
}
/**
* Return a specific SVN property of the given file or directory in the
* repository. This function is equivalent to
* 'svn propget $property_name $repository_url@$url_revision'.
*
* @param $property_name
* The name of the property, e.g. 'svn:mime-type' or 'svn:executable'.
* @param $repository_url
* The URL of the item (e.g. 'file:///svnroot/my-repo/subdir/hello.php')
* or the repository itself (e.g. 'file:///svnroot/my-repo'), as string.
* @param $url_revision
* The revision of the URL that should be queried for the property.
* This needs to be a single revision, e.g. '35' or 'HEAD'.
*
* @return
* A string containing the specified property for the item in the given
* revision, an empty string if this property is not set. If the
* 'svn propget' invocation exited with an error, this function
* returns NULL and the error message can be retrieved by calling
* svnlib_last_error_message().
*/
function svnlib_propget($property_name, $repository_url, $url_revision = 'HEAD') {
$cmd = array(
escapeshellarg(escapeshellcmd(_svnlib_svn_binary())),
'propget',
$property_name,
'--non-interactive',
);
_svnlib_add_common_options($cmd);
$cmd[] = escapeshellarg($repository_url .'@'. $url_revision);
$tempfiles = _svnlib_add_output_pipes($cmd);
$return_code = 0;
exec(implode(' ', $cmd), $output, $return_code);
if ($return_code != 0) {
_svnlib_set_error_message($tempfiles);
return NULL; // no such item or revision found
}
$property = trim(implode('', $output));
_svnlib_delete_temporary_files($tempfiles);
if (empty($property)) {
return '';
}
return $property;
}