Use title of remote paste for forked one; use page title as fallback

[phorkie.git] / src / phorkie / ForkRemote.php

diff --git a/src/phorkie/ForkRemote.php b/src/phorkie/ForkRemote.php
index f3639b29ed9584c054b82d139b4fe60e3be8b01b..31b483959974b6a6b239b839ffac00e732b18c10 100644 (file)
--- a/src/phorkie/ForkRemote.php
+++ b/src/phorkie/ForkRemote.php
@@ -3,24 +3,54 @@ namespace phorkie;
 
 class ForkRemote
 {
+    /**
+     * Contains error message when parse() failed
+     */
+    public $error;
+
     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;
+        $this->url = trim($url);
     }
 
     public function parse()
     {
-        $scheme = parse_url($this->url, PHP_URL_SCHEME);
+        if ($this->url == '') {
+            $this->error = 'Empty fork URL';
+            return false;
+        }
+
+        $arUrl  = parse_url($this->url);
+        $scheme = isset($arUrl['scheme']) ? $arUrl['scheme'] : '';
+
+        if ($scheme == 'https' && isset($arUrl['host'])
+            && $arUrl['host'] == 'gist.github.com'
+        ) {
+            $this->arGitUrls[][] = 'git://gist.github.com/'
+                . ltrim($arUrl['path'], '/') . '.git';
+            return true;
+        }
+
         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 +66,112 @@ 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"]');
+        $titles = $sx->xpath('/html/head/title');
+        $pageTitle = $this->cleanPageTitle((string) reset($titles));
+
+        $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 = $str;
+            } else if ($pageTitle != '') {
+                $title = $pageTitle;
+            } else {
+                $title = 'Unnamed repository #' . ++$anonymous;
+            }
+            $url = (string)$elem['href'];
+            if ($this->isSupported($url)) {
+                ++$count;
+                $this->arGitUrls[$title][] = $url;
+            }
+        }
+
+        if ($count > 0) {
+            return true;
+        }
+
+        $this->error = 'No git:// clone URL found';
+        return false;
+    }
+
+    /**
+     * Iterate through all git urls and return one if there is only
+     * one supported one.
+     *
+     * @return mixed Boolean false or array with keys "url" and "title"
+     */
+    public function getUniqueGitUrl()
+    {
+        $nFound = 0;
+        foreach ($this->arGitUrls as $title => $arUrls) {
+            foreach ($arUrls as $url) {
+                $nFound++;
+                $uniqueUrl = array('url' => $url, 'title' => $title);
+            }
+        }
+
+        if ($nFound == 1) {
+            return $uniqueUrl;
+        }
+        return false;
+    }
+
+    public function getGitUrls()
+    {
+        return $this->arGitUrls;
+    }
+
+    /**
+     * Get the URL from which the git URL was derived, often
+     * the HTTP URL.
+     *
+     * @return string
+     */
+    public function getUrl()
+    {
+        return $this->url;
+    }
+
+    public function setUrl($url)
+    {
+        $this->url = $url;
+    }
+
+    public function isSupported($url)
+    {
+        $scheme = parse_url($url, PHP_URL_SCHEME);
+        return $scheme == 'git'
+            || $scheme == 'http' || $scheme == 'https';
+    }
+
+    /**
+     * Remove application names from HTML page titles
+     *
+     * @param string $title HTML page title
+     *
+     * @return string Cleaned HTML page title
+     */
+    protected function cleanPageTitle($title)
+    {
+        $title = trim($title);
+        if (substr($title, -9) == '- phorkie') {
+            $title = trim(substr($title, 0, -9));
+        }
+
+        return $title;
     }
 }