3 namespace Friendica\Core\Console;
6 * When I installed docblox, I had the experience that it does not generate any output at all.
7 * This script may be used to find that kind of problems with the documentation build process.
8 * If docblox generates output, use another approach for debugging.
10 * Basically, docblox takes a list of files to build documentation from. This script assumes there is a file or set of files
11 * breaking the build when it is included in that list. It tries to calculate the smallest list containing these files.
12 * Unfortunatly, the original problem is NP-complete, so what the script does is a best guess only.
14 * So it starts with a list of all files in the project.
15 * If that list can't be build, it cuts it in two parts and tries both parts independently. If only one of them breaks,
16 * it takes that one and tries the same independently. If both break, it assumes this is the smallest set. This assumption
17 * is not necessarily true. Maybe the smallest set consists of two files and both of them were in different parts when
18 * the list was divided, but by now it is my best guess. To make this assumption better, the list is shuffled after every step.
20 * After that, the script tries to remove a file from the list. It tests if the list breaks and if so, it
21 * assumes that the file it removed belongs to the set of erroneous files.
22 * This is done for all files, so, in the end removing one file leads to a working doc build.
24 * @author Alexander Kampmann
25 * @author Hypolite Petovan <hypolite@mrpetovan.com>
27 class DocBloxErrorChecker extends \Asika\SimpleConsole\Console
30 protected $helpOptions = ['h', 'help', '?'];
32 protected function getHelp()
35 console docbloxerrorchecker - Checks the file tree for docblox errors
37 bin/console docbloxerrorchecker [-h|--help|-?] [-v]
40 -h|--help|-? Show help information
41 -v Show more debug information.
46 protected function doExecute()
48 if ($this->getOption('v')) {
49 $this->out('Class: ' . __CLASS__);
50 $this->out('Arguments: ' . var_export($this->args, true));
51 $this->out('Options: ' . var_export($this->options, true));
54 if (count($this->args) > 0) {
55 throw new \Asika\SimpleConsole\CommandArgsException('Too many arguments');
58 if (!$this->commandExists('docblox')) {
59 throw new \RuntimeException('DocBlox isn\'t available.');
62 $dir = \get_app()->getBasePath();
64 //stack for dirs to search
66 //list of source files
69 //loop over all files in $dir
70 while ($dh = opendir($dir)) {
71 while ($file = readdir($dh)) {
72 if (is_dir($dir . "/" . $file)) {
73 //add to directory stack
74 if (strpos($file, '.') !== 0) {
75 array_push($dirstack, $dir . "/" . $file);
76 $this->out('dir ' . $dir . '/' . $file);
79 //test if it is a source file and add to filelist
80 if (substr($file, strlen($file) - 4) == ".php") {
81 array_push($filelist, $dir . "/" . $file);
82 $this->out($dir . '/' . $file);
86 //look at the next dir
87 $dir = array_pop($dirstack);
90 //check the entire set
91 if ($this->runs($filelist)) {
92 throw new \RuntimeException("I can not detect a problem.");
95 //check half of the set and discard if that half is okay
99 $this->out($i . '/' . count($filelist) . ' elements remaining.');
100 $res = $this->reduce($res, count($res) / 2);
103 } while (count($res) < $i);
105 //check one file after another
108 while (count($res) != 0) {
109 $file = array_pop($res);
111 if ($this->runs(array_merge($res, $needed))) {
112 $this->out('needs: ' . $file . ' and file count ' . count($needed));
113 array_push($needed, $file);
117 $this->out('Smallest Set is: ' . $this->namesList($needed) . ' with ' . count($needed) . ' files. ');
122 private function commandExists($command)
124 $prefix = strpos(strtolower(PHP_OS),'win') > -1 ? 'where' : 'which';
125 exec("{$prefix} {$command}", $output, $returnVal);
126 return $returnVal === 0;
130 * This function generates a comma separated list of file names.
132 * @param array $fileset Set of file names
134 * @return string comma-separated list of the file names
136 private function namesList($fileset)
138 return implode(',', $fileset);
142 * This functions runs phpdoc on the provided list of files
144 * @param array $fileset Set of filenames
146 * @return bool true, if that set can be built
148 private function runs($fileset)
150 $fsParam = $this->namesList($fileset);
151 $this->exec('docblox -t phpdoc_out -f ' . $fsParam);
152 if (file_exists("phpdoc_out/index.html")) {
153 $this->out('Subset ' . $fsParam . ' is okay.');
154 $this->exec('rm -r phpdoc_out');
157 $this->out('Subset ' . $fsParam . ' failed.');
163 * This functions cuts down a fileset by removing files until it finally works.
164 * it was meant to be recursive, but php's maximum stack size is to small. So it just simulates recursion.
166 * In that version, it does not necessarily generate the smallest set, because it may not alter the elements order enough.
168 * @param array $fileset set of filenames
169 * @param int $ps number of files in subsets
171 * @return array a part of $fileset, that crashes
173 private function reduce($fileset, $ps)
176 $parts = array_chunk($fileset, $ps);
177 //filter working subsets...
178 $parts = array_filter($parts, [$this, 'runs']);
179 //melt remaining parts together
180 if (is_array($parts)) {
181 return array_reduce($parts, "array_merge", []);