Merge pull request #294 from virtualtam/doc/update

Doc: sync from Wiki, generate HTML

1 files changed, 155 insertions, 0 deletions

diff --git a/doc/Download-CSS-styles-from-an-OPML-list.md b/doc/Download-CSS-styles-from-an-OPML-list.md
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+#Download CSS styles from an OPML list
+###Download CSS styles for shaarlis listed in an opml file
+Example php script:
+
+```php
+<!---- ?php -->
+<!---- Copyright (c) 2014 Nicolas Delsaux (https://github.com/Riduidel) -->
+<!---- License: zlib (http://www.gzip.org/zlib/zlib_license.html) -->
+
+/**
+ * Source: https://github.com/Riduidel
+ * Download css styles for shaarlis listed in an opml file
+ */
+define("SHAARLI_RSS_OPML", "https://www.ecirtam.net/shaarlirss/custom/people.opml");
+
+define("THEMES_TEMP_FOLDER", "new_themes");
+
+if(!file_exists(THEMES_TEMP_FOLDER)) {
+        mkdir(THEMES_TEMP_FOLDER);
+}
+
+function siteUrl($pathInSite) {
+        $indexPos = strpos($pathInSite, "index.php");
+        if(!$indexPos) {
+                return $pathInSite;
+        } else {
+                return substr($pathInSite, 0, $indexPos);
+        }
+}
+
+function createShaarliHashFromOPMLL($opmlFile) {
+        $result = array();
+        $opml = file_get_contents($opmlFile);
+        $opmlXml = simplexml_load_string($opml);
+        $outlineElements = $opmlXml->xpath("body/outline");
+        foreach($outlineElements as $site) {
+                $siteUrl = siteUrl((string) $site['htmlUrl']);[](.html)
+                $result[$siteUrl]=((string) $site['text']);[](.html)
+        }
+        return $result;
+}
+
+function getSiteFolder($url) {
+        $domain = parse_url($url,  PHP_URL_HOST);
+        return THEMES_TEMP_FOLDER."/".str_replace(".", "_", $domain);
+}
+
+function get_http_response_code($theURL) {
+     $headers = get_headers($theURL);
+     return substr($headers[0], 9, 3);[](.html)
+}
+
+/**
+ * This makes the code PHP-5 only (particularly the call to "get_headers")
+ */
+function copyUserStyleFrom($url, $name, $knownStyles) {
+        $userStyle = $url."inc/user.css";
+        if(in_array($url, $knownStyles)) {
+                // TODO add log message
+        } else {
+                $statusCode = get_http_response_code($userStyle);
+                if(intval($statusCode)<300) {
+                        $styleSheet = file_get_contents($userStyle);
+                        $siteFolder = getSiteFolder($url);
+                        if(!file_exists($siteFolder)) {
+                                mkdir($siteFolder);
+                        }
+                        if(!file_exists($siteFolder.'/user.css')) {
+                                // Copy stylesheet
+                                file_put_contents($siteFolder.'/user.css', $styleSheet);
+                        }
+                        if(!file_exists($siteFolder.'/README.md')) {
+                                // Then write a readme.md file
+                                file_put_contents($siteFolder.'/README.md', 
+                                        "User style from ".$name."\n"
+                                        ."============================="
+                                        ."\n\n"
+                                        ."This stylesheet was downloaded from ".$userStyle." on ".date(DATE_RFC822)
+                                        );
+                        }
+                        if(!file_exists($siteFolder.'/config.ini')) {
+                                // Write a config file containing useful informations
+                                file_put_contents($siteFolder.'/config.ini', 
+                                        "site_url=".$url."\n"
+                                        ."site_name=".$name."\n"
+                                        );
+                        }
+                        if(!file_exists($siteFolder.'/home.png')) {
+                                // And finally copy generated thumbnail
+                                $homeThumb = $siteFolder.'/home.png';
+                                file_put_contents($siteFolder.'/home.png', file_get_contents(getThumbnailUrl($url)));
+                        }
+                        echo 'Theme have been downloaded from  <a href="'.$url.'">'.$url.'</a> into '.$siteFolder
+                                .'. It looks like <img src="'.$homeThumb.'"><br/>';
+                }
+        }
+}
+
+function getThumbnailUrl($url) {
+        return 'http://api.webthumbnail.org/?url='.$url;
+}
+
+function copyUserStylesFrom($urlToNames, $knownStyles) {
+        foreach($urlToNames as $url => $name) {
+                copyUserStyleFrom($url, $name, $knownStyles);
+        }
+}
+
+/**
+ * Reading directory list, courtesy of http://www.laughing-buddha.net/php/dirlist/
+ * @param directory the directory we want to list files of
+ * @return a simple array containing the list of absolute file paths. Notice that current file (".") and parent one("..")
+ * are not listed here
+ */
+function getDirectoryList ($directory)  {
+    $realPath = realpath($directory);
+    // create an array to hold directory list
+    $results = array();
+    // create a handler for the directory
+    $handler = opendir($directory);
+    // open directory and walk through the filenames
+    while ($file = readdir($handler)) {
+        // if file isn't this directory or its parent, add it to the results
+        if ($file != "." && $file != "..") {
+                        $results[ = realpath($realPath . "/" . $file);](-=-realpath($realPath-.-"/"-.-$file);.html)
+        }
+    }
+    // tidy up: close the handler
+    closedir($handler);
+    // done!
+    return $results;
+}
+
+/**
+ * Start in themes folder and look in all subfolders for config.ini files. 
+ * These config.ini files allow us not to download styles again and again
+ */
+function findKnownStyles() {
+        $result = array();
+        $subFolders = getDirectoryList("themes");
+        foreach($subFolders as $folder) {
+                $configFile = $folder."/config.ini";
+                if(file_exists($configFile)) {
+                        $iniParameters = parse_ini_file($configFile);
+                        array_push($result, $iniParameters['site_url']);[](.html)
+                }
+        }
+        return $result;
+}
+
+$knownStyles = findKnownStyles();
+copyUserStylesFrom(createShaarliHashFromOPMLL(SHAARLI_RSS_OPML), $knownStyles);
+
+<!--- ? ---->
+```