Friendica Communications Platform (please note that this is a clone of the repository at github, issues are handled there) https://friendi.ca
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<?php
namespace Friendica\Core\Console;
/**
* When I installed docblox, I had the experience that it does not generate any output at all.
* This script may be used to find that kind of problems with the documentation build process.
* If docblox generates output, use another approach for debugging.
*
* Basically, docblox takes a list of files to build documentation from. This script assumes there is a file or set of files
* breaking the build when it is included in that list. It tries to calculate the smallest list containing these files.
* Unfortunatly, the original problem is NP-complete, so what the script does is a best guess only.
*
* So it starts with a list of all files in the project.
* If that list can't be build, it cuts it in two parts and tries both parts independently. If only one of them breaks,
* it takes that one and tries the same independently. If both break, it assumes this is the smallest set. This assumption
* is not necessarily true. Maybe the smallest set consists of two files and both of them were in different parts when
* the list was divided, but by now it is my best guess. To make this assumption better, the list is shuffled after every step.
*
* After that, the script tries to remove a file from the list. It tests if the list breaks and if so, it
* assumes that the file it removed belongs to the set of erroneous files.
* This is done for all files, so, in the end removing one file leads to a working doc build.
*
* @author Alexander Kampmann
* @author Hypolite Petovan <mrpetovan@gmail.com>
*/
class DocBloxErrorChecker extends \Asika\SimpleConsole\Console
{
protected $helpOptions = ['h', 'help', '?'];
protected function getHelp()
{
$help = <<<HELP
console docbloxerrorchecker - Checks the file tree for docblox errors
Usage
bin/console docbloxerrorchecker [-h|--help|-?] [-v]
Options
-h|--help|-? Show help information
-v Show more debug information.
HELP;
return $help;
}
protected function doExecute()
{
if ($this->getOption('v')) {
$this->out('Class: ' . __CLASS__);
$this->out('Arguments: ' . var_export($this->args, true));
$this->out('Options: ' . var_export($this->options, true));
}
if (count($this->args) > 0) {
throw new \Asika\SimpleConsole\CommandArgsException('Too many arguments');
}
if (!$this->commandExists('docblox')) {
throw new \RuntimeException('DocBlox isn\'t available.');
}
//return from util folder to frindica base dir
$dir = get_app()->get_basepath();
//stack for dirs to search
$dirstack = [];
//list of source files
$filelist = [];
//loop over all files in $dir
while ($dh = opendir($dir)) {
while ($file = readdir($dh)) {
if (is_dir($dir . "/" . $file)) {
//add to directory stack
if (strpos($file, '.') !== 0) {
array_push($dirstack, $dir . "/" . $file);
$this->out('dir ' . $dir . '/' . $file);
}
} else {
//test if it is a source file and add to filelist
if (substr($file, strlen($file) - 4) == ".php") {
array_push($filelist, $dir . "/" . $file);
$this->out($dir . '/' . $file);
}
}
}
//look at the next dir
$dir = array_pop($dirstack);
}
//check the entire set
if ($this->runs($filelist)) {
throw new \RuntimeException("I can not detect a problem.");
}
//check half of the set and discard if that half is okay
$res = $filelist;
$i = count($res);
do {
$this->out($i . '/' . count($filelist) . ' elements remaining.');
$res = $this->reduce($res, count($res) / 2);
shuffle($res);
$i = count($res);
} while (count($res) < $i);
//check one file after another
$needed = [];
while (count($res) != 0) {
$file = array_pop($res);
if ($this->runs(array_merge($res, $needed))) {
$this->out('needs: ' . $file . ' and file count ' . count($needed));
array_push($needed, $file);
}
}
$this->out('Smallest Set is: ' . $this->namesList($needed) . ' with ' . count($needed) . ' files. ');
return 0;
}
private function commandExists($command)
{
$prefix = strpos(strtolower(PHP_OS),'win') > -1 ? 'where' : 'which';
exec("{$prefix} {$command}", $output = [], $returnVal = 0);
return $returnVal === 0;
}
/**
* This function generates a comma separated list of file names.
*
* @package util
*
* @param array $fileset Set of file names
*
* @return string comma-separated list of the file names
*/
private function namesList($fileset)
{
return implode(',', $fileset);
}
/**
* This functions runs phpdoc on the provided list of files
* @package util
*
* @param array $fileset Set of filenames
*
* @return bool true, if that set can be built
*/
private function runs($fileset)
{
$fsParam = $this->namesList($fileset);
$this->exec('docblox -t phpdoc_out -f ' . $fsParam);
if (file_exists("phpdoc_out/index.html")) {
$this->out('Subset ' . $fsParam . ' is okay.');
$this->exec('rm -r phpdoc_out');
return true;
} else {
$this->out('Subset ' . $fsParam . ' failed.');
return false;
}
}
/**
* This functions cuts down a fileset by removing files until it finally works.
* it was meant to be recursive, but php's maximum stack size is to small. So it just simulates recursion.
*
* In that version, it does not necessarily generate the smallest set, because it may not alter the elements order enough.
*
* @package util
*
* @param array $fileset set of filenames
* @param int $ps number of files in subsets
*
* @return array a part of $fileset, that crashes
*/
private function reduce($fileset, $ps)
{
//split array...
$parts = array_chunk($fileset, $ps);
//filter working subsets...
$parts = array_filter($parts, [$this, 'runs']);
//melt remaining parts together
if (is_array($parts)) {
return array_reduce($parts, "array_merge", []);
}
return [];
}
}