Feature #2132 - Implementing automatic (when it is needed) inclusion of the script ASCIIMathML.js when a wiki-page is converted as full html document, stored in the Documents tool.

14 years ago · 3eb6125ecf
parent 601c373a5c
commit 3eb6125ecf
2 changed files with 47 additions and 4 deletions
--- a/main/inc/lib/text.lib.php
+++ b/main/inc/lib/text.lib.php
@ -281,6 +281,44 @@ function api_fgetcsv($handle, $length = null, $delimiter = ',', $enclosure = '"'
 }


+/* Functions for supporting ASCIIMathML mathematical formulas and ASCIIsvg maathematical graphics */
+
+/**
+ * Dectects ASCIIMathML formula presence within a given html text.
+ * @param string $html      The input html text.
+ * @return bool             Returns TRUE when there is a formula found or FALSE otherwise.
+ */
+function api_contains_asciimathml($html) {
+    if (!preg_match_all('/<span[^>]*class\s*=\s*[\'"](.*?)[\'"][^>]*>/mi', $html, $matches)) {
+        return false;
+    }
+    foreach ($matches[1] as $string) {
+        $string = ' '.str_replace(',', ' ', $string).' ';
+        if (preg_match('/\sAM\s/m', $string)) {
+            return true;
+        }
+    }
+    return false;
+}
+
+/**
+ * Dectects ASCIIsvg graphics presence within a given html text.
+ * @param string $html      The input html text.
+ * @return bool             Returns TRUE when there is a graph found or FALSE otherwise.
+ */
+function api_contains_asciisvg($html) {
+    if (!preg_match_all('/<embed([^>]*?)>/mi', $html, $matches)) {
+        return false;
+    }
+    foreach ($matches[1] as $string) {
+        $string = ' '.str_replace(',', ' ', $string).' ';
+        if (preg_match('/sscr\s*=\s*[\'"](.*?)[\'"]/m', $string)) {
+            return true;
+        }
+    }
+    return false;
+}
+
 /* Miscellaneous text processing functions */

 /**
@ -583,10 +621,10 @@ function get_last_week() {
 */
 function get_week_from_day($date) {
    if (!empty($date)) {
-	   $time = api_strtotime($date,'UTC');
+       $time = api_strtotime($date,'UTC');
       return date('W', $date);
    } else {
-    	return date('W');
+        return date('W');
    }
 }

--- a/main/wiki/wiki.inc.php
+++ b/main/wiki/wiki.inc.php
@ -1716,7 +1716,7 @@ function export2doc($wikiTitle, $wikiContents, $groupId)
        {CSS}
        /*]]>*/
        </style>
-        </head>
+        {ASCIIMATHML_SCRIPT}</head>
        <body dir="{TEXT_DIRECTION}">
        {CONTENT}
        </body>
@ -1737,7 +1737,12 @@ function export2doc($wikiTitle, $wikiContents, $groupId)
    $css = str_replace('images/', $root_rel.$css_path.$theme.'images/', $css);
    $css = str_replace('../../img/', $root_rel.'main/img/', $css);

-    $template = str_replace(array('{LANGUAGE}', '{ENCODING}', '{TEXT_DIRECTION}', '{TITLE}', '{CSS}'), array(api_get_language_isocode(), api_get_system_encoding(), api_get_text_direction(), $wikiTitle, $css), $template);
+    $asciimathmal_script = (api_contains_asciimathml($wikiContents) || api_contains_asciisvg($wikiContents))
+       ? '<script src="'.api_get_path(TO_REL, SCRIPT_ASCIIMATHML).'" type="text/javascript"></script>'."\n" : '';
+
+    $template = str_replace(array('{LANGUAGE}', '{ENCODING}', '{TEXT_DIRECTION}', '{TITLE}', '{CSS}', '{ASCIIMATHML_SCRIPT}'),
+        array(api_get_language_isocode(), api_get_system_encoding(), api_get_text_direction(), $wikiTitle, $css, $asciimathmal_script),
+        $template);

    if (0 != $groupId)
    {