Merge pull request #579 from htacg/issue-567-2

Issue 567 2 - style tag to head

include/tidyenum.h

@@ -270,7 +270,9 @@ extern "C" {
     FN(COERCE_TO_ENDTAG)              \
     FN(ELEMENT_NOT_EMPTY)             \
     FN(UNEXPECTED_END_OF_FILE)        \
-    FN(UNEXPECTED_ENDTAG)
+    FN(UNEXPECTED_ENDTAG)             \
+    FN(MOVED_STYLE_TO_HEAD)           \
+    FN(FOUND_STYLE_IN_BODY)
     
 
 /** These are report messages added by Tidy's accessibility module. */
@@ -648,6 +650,7 @@ typedef enum
     TidyXmlPIs,                  /**< If set to yes PIs must end with ?> */
     TidyXmlSpace,                /**< If set to yes adds xml:space attr as needed */
     TidyXmlTags,                 /**< Treat input as XML */
+    TidyStyleTags,               /**< Move sytle to head */
     N_TIDY_OPTIONS               /**< Must be last */
 } TidyOptionId;
 

src/clean.c

@@ -2647,6 +2647,57 @@ void TY_(FixAnchors)(TidyDocImpl* doc, Node *node, Bool wantName, Bool wantId)
     }
 }
 
+/* Issue #567 - move style elements from body to head 
+ * ==================================================
+ */
+static void StyleToHead(TidyDocImpl* doc, Node *head, Node *node, Bool fix, int indent)
+{
+	Node *next;
+	while (node)
+	{
+		next = node->next;	/* get 'next' now , in case the node is moved */
+		/* dbg_show_node(doc, node, 0, indent); */
+		if (nodeIsSTYLE(node))
+		{
+			if (fix)
+			{
+				TY_(RemoveNode)(node); /* unhook style node from body */
+				TY_(InsertNodeAtEnd)(head, node);   /* add to end of head */
+				TY_(ReportNotice)(doc, node, head, MOVED_STYLE_TO_HEAD); /* report move */
+			}
+			else
+			{
+				TY_(ReportNotice)(doc, node, head, FOUND_STYLE_IN_BODY);
+			}
+		}
+		else if (node->content)
+		{
+			StyleToHead(doc, head, node->content, fix, indent + 1);
+		}
+		node = next;	/* process the 'next', if any */
+	}
+}
+
+
+void TY_(CleanStyle)(TidyDocImpl* doc, Node *html)
+{
+    Node *head = NULL, *body = NULL;
+    Bool fix = cfgBool(doc, TidyStyleTags);
+
+    if (!html)
+        return; /* oops, not given a start node */
+
+    head = TY_(FindHEAD)( doc );
+    body = TY_(FindBody)( doc );
+
+    if ((head != NULL) && (body != NULL))
+    {
+		StyleToHead(doc, head, body, fix, 0); /* found head and body */
+    }
+}
+/* ==================================================
+ */
+
 /*
  * local variables:
  * mode: c

src/clean.h

@@ -78,5 +78,7 @@ void TY_(FixAnchors)(TidyDocImpl* doc, Node *node, Bool wantName, Bool wantId);
 void TY_(FixXhtmlNamespace)(TidyDocImpl* doc, Bool wantXmlns);
 void TY_(FixLanguageInformation)(TidyDocImpl* doc, Node* node, Bool wantXmlLang, Bool wantLang);
 
+/* Issue #567 - move style elements from body to head */
+void TY_(CleanStyle)(TidyDocImpl* doc, Node *html);
 
 #endif /* __CLEAN_H__ */

src/config.c

@@ -312,6 +312,7 @@ static const TidyOptionImpl option_defs[] =
     { TidyXmlPIs,                  MU, "assume-xml-procins",          BL, no,              ParsePickList,     &boolPicks          },
     { TidyXmlSpace,                MU, "add-xml-space",               BL, no,              ParsePickList,     &boolPicks          },
     { TidyXmlTags,                 MU, "input-xml",                   BL, no,              ParsePickList,     &boolPicks          },
+    { TidyStyleTags,               MU, "fix-style-tags",              BL, yes,             ParsePickList,     &boolPicks          },
     { N_TIDY_OPTIONS,              XX, NULL,                          XY, 0,               NULL,              NULL                }
 };
 

src/language_en.h

@@ -1512,6 +1512,18 @@ static languageDefinition language_en = { whichPluralForm_en, {
         "This option specifies if Tidy should use the XML parser rather than the "
         "error correcting HTML parser. "
     },
+    {/* Important notes for translators:
+     - Use only <code></code>, <var></var>, <em></em>, <strong></strong>, and
+     <br/>.
+     - Entities, tags, attributes, etc., should be enclosed in <code></code>.
+     - Option values should be enclosed in <var></var>.
+     - It's very important that <br/> be self-closing!
+     - The strings "Tidy" and "HTML Tidy" are the program name and must not
+     be translated. */
+        TidyStyleTags,                  0,
+        "This option specifies if Tidy should move all style tags to the "
+        "head of the document. "
+    },
 
 
     /********************************************
@@ -1890,7 +1902,8 @@ static languageDefinition language_en = { whichPluralForm_en, {
     { ELEMENT_NOT_EMPTY,            0,   "%s element not empty or not closed"                                      }, /* ReportError, ReportAttrError */
     { UNEXPECTED_END_OF_FILE,       0,   "unexpected end of file %s"                                               }, /* ReportError, ReportAttrError */
     { UNEXPECTED_ENDTAG,            0,   "unexpected </%s>"                                                        }, /* ReportError, ReportFatal */
-
+    { MOVED_STYLE_TO_HEAD,          0,   "moved <style> tag to <head>! fix-style-tags: no to avoid."               }, /* ReportWarning */
+    { FOUND_STYLE_IN_BODY,          0,   "found <style> tag in <body>! fix-style-tags: yes to move."               }, /* ReportWarning */
 
 #if SUPPORT_ACCESSIBILITY_CHECKS
     

src/message.c

@@ -249,6 +249,11 @@ void TY_(ReportNotice)(TidyDocImpl* doc, Node *element, Node *node, uint code)
             }
             message = TY_(tidyMessageCreateWithNode)(doc, element, code, TidyInfo, elemdesc, tagtype );
             break;
+		case MOVED_STYLE_TO_HEAD:
+		case FOUND_STYLE_IN_BODY:
+            TagToString(element, elemdesc, sizeof(elemdesc));
+            message = TY_(tidyMessageCreateWithNode)(doc, element, code, TidyWarning, elemdesc);
+            break;
     }
 
     messageOut( message );

src/tidylib.c

@@ -2022,6 +2022,9 @@ int         tidyDocCleanAndRepair( TidyDocImpl* doc )
     if (tidyXmlTags)
        return tidyDocStatus( doc );
 
+    /* Issue #567 - move style elements from body to head */
+    TY_(CleanStyle)(doc, &doc->root);
+
     /* simplifies <b><b> ... </b> ...</b> etc. */
     if ( mergeEmphasis )
         TY_(NestedEmphasis)( doc, &doc->root );