implement request #13: simple remote forking works now

1 files changed, 74 insertions, 2 deletions

diff --git a/src/phorkie/ForkRemote.php b/src/phorkie/ForkRemote.php
index f3639b2..524255a 100644
--- a/src/phorkie/ForkRemote.php
+++ b/src/phorkie/ForkRemote.php
@@ -5,6 +5,16 @@ class ForkRemote
 {
     protected $url;
 
+    /**
+     * Array with keys (URL title) and values (arrays of urls)
+     * Only supported URLs are included.
+     *
+     * @var array
+     */
+    protected $arGitUrls;
+
+
+
     public function __construct($url)
     {
         $this->url = $url;
@@ -16,11 +26,11 @@ class ForkRemote
         switch ($scheme) {
         case 'git':
             //clearly a git url
-            $this->gitUrl = $this->url;
+            $this->arGitUrls = array(array($this->url));
             return true;
 
         case 'ssh':
-            //FIXME: maybe loosen this when we know how to skip the 
+            //FIXME: maybe loosen this when we know how to skip the
             //"do you trust this server" question of ssh
             $this->error = 'ssh:// URLs are not supported';
             return false;
@@ -36,6 +46,68 @@ class ForkRemote
 
     protected function extractUrlsFromHtml($url)
     {
+        //HTML is not necessarily well-formed, and Gitorious has many problems
+        // in this regard
+        //$sx = simplexml_load_file($url);
+        libxml_use_internal_errors(true);
+        $sx = simplexml_import_dom(\DomDocument::loadHtmlFile($url));
+        $elems = $sx->xpath('//*[@rel="vcs-git"]');
+
+        $count = $anonymous = 0;
+        foreach ($elems as $elem) {
+            if (!isset($elem['href'])) {
+                continue;
+            }
+            $str = (string)$elem;
+            if (isset($elem['title'])) {
+                //<link href=".." rel="vcs-git" title="title" />
+                $title = (string)$elem['title'];
+            } else if ($str != '') {
+                //<a href=".." rel="vcs-git">title</a>
+                $title = $str;
+            } else {
+                $title = 'Unnamed repository #' . ++$anonymous;
+            }
+            $url = (string)$elem['href'];
+            if ($this->isSupported($url)) {
+                ++$count;
+                $this->arGitUrls[$title][] = $url;
+            }
+        }
+
+        return $count > 0;
+    }
+
+    /**
+     * Iterate through all git urls and return one if there is only
+     * one supported one.
+     *
+     * @return mixed Boolean false or string
+     */
+    public function getUniqueGitUrl()
+    {
+        $nFound = 0;
+        foreach ($this->arGitUrls as $title => $arUrls) {
+            foreach ($arUrls as $url) {
+                $nFound++;
+                $uniqueUrl = $url;
+            }
+        }
+
+        if ($nFound == 1) {
+            return $uniqueUrl;
+        }
+        return false;
+    }
+
+    public function getGitUrls()
+    {
+        return $this->arGitUrls;
+    }
+
+    public function isSupported($url)
+    {
+        return parse_url($url, PHP_URL_SCHEME) == 'git';
     }
 }