Add scripts/docgen.php to build basic doxygen HTML docs from doc comments, either for core or a given plugin.

Nothing too fancy yet; style and layout needs some loving!

scripts/docgen.php

@@ -0,0 +1,84 @@
+#!/usr/bin/env php
+<?php
+
+$shortoptions = '';
+$longoptions = array('plugin=');
+
+
+$helptext = <<<ENDOFHELP
+Build HTML documentation from doc comments in source.
+
+Usage: docgen.php [options] output-directory
+Options:
+
+  --plugin=...     build docs for given plugin instead of core
+
+
+ENDOFHELP;
+
+define('INSTALLDIR', realpath(dirname(__FILE__) . '/..'));
+require_once INSTALLDIR.'/scripts/commandline.inc';
+
+$pattern = "*.php *.inc";
+$exclude = 'config.php */extlib/* */local/* */plugins/* */scripts/*';
+
+if (isset($args[0])) {
+    $outdir = $args[0];
+    if (!is_dir($outdir)) {
+        echo "Output directory $outdir is not a directory.\n";
+        exit(1);
+    }
+} else {
+    print $helptext;
+    exit(1);
+}
+
+if (have_option('p', 'plugin')) {
+    $plugin = get_option_value('plugin');
+    $exclude = "*/extlib/*";
+    $indir = INSTALLDIR . "/plugins/" . $plugin;
+    if (!is_dir($indir)) {
+        $indir = INSTALLDIR . "/plugins";
+        $filename = "{$plugin}Plugin.php";
+        if (!file_exists("$indir/$filename")) {
+            echo "Can't find plugin $plugin.\n";
+            exit(1);
+        } else {
+            $pattern = $filename;
+        }
+    }
+} else {
+    $indir = INSTALLDIR;
+}
+
+$replacements = array(
+    '%%version%%' => STATUSNET_VERSION,
+    '%%indir%%' => $indir,
+    '%%pattern%%' => $pattern,
+    '%%outdir%%' => $outdir,
+    '%%htmlout%%' => $outdir,
+    '%%exclude%%' => $exclude,
+);
+
+var_dump($replacements);
+
+$template = file_get_contents(dirname(__FILE__) . '/doxygen.tmpl');
+$template = strtr($template, $replacements);
+
+$templateFile = tempnam(sys_get_temp_dir(), 'statusnet-doxygen');
+file_put_contents($templateFile, $template);
+
+$cmd = "doxygen " . escapeshellarg($templateFile);
+
+$retval = 0;
+passthru($cmd, $retval);
+
+if ($retval == 0) {
+    echo "Done!\n";
+    unlink($templateFile);
+    exit(0);
+} else {
+    echo "Failed! Doxygen config left in $templateFile\n";
+    exit($retval);
+}
+