Add w3c html tidy

third_party/tidy/access.h

@@ -0,0 +1,91 @@
+#ifndef __ACCESS_H__
+#define __ACCESS_H__
+/* clang-format off */
+
+/*********************************************************************
+ * carry out accessibility checks
+ *
+ * This module carries out processes for all accessibility checks. It
+ * traverses through all the content within the tree and evaluates the
+ * tags for accessibility.
+ *
+ * To perform the following checks, 'AccessibilityChecks' must be
+ * called AFTER the tree structure has been formed.
+ *
+ * If, in the command prompt or configuration file, there is no
+ * specification of which accessibility priorities to check, then no
+ * accessibility checks will be performed.
+ *
+ * The accessibility checks to perform depending on user's desire:
+ *   1. priority 1
+ *   2. priority 1 & 2
+ *   3. priority 1, 2, & 3
+ *
+ * Reference document: https://www.w3.org/TR/WAI-WEBCONTENT/
+ *
+ * Copyright University of Toronto
+ * Portions (c) 1998-2006 (W3C) MIT, ERCIM, Keio University
+ * See `tidy.h` for the copyright notice.
+ * Programmed by: Mike Lam and Chris Ridpath
+ * Modifications by: Terry Teague (TRT)
+ * Further modifications: consult git log.
+ *********************************************************************/
+
+#include "third_party/tidy/forward.h"
+
+
+enum {
+  TEXTBUF_SIZE=128u
+};
+
+struct _TidyAccessImpl;
+typedef struct _TidyAccessImpl TidyAccessImpl;
+
+struct _TidyAccessImpl
+{
+    /* gets set from Tidy variable AccessibilityCheckLevel */
+    int PRIORITYCHK; /**< */
+
+    /* Number of characters that are found within the concatenated text */
+    int counter;
+
+    /* list of characters in the text nodes found within a container element */
+    tmbchar textNode[ TEXTBUF_SIZE ];
+
+    /* The list of characters found within one text node */
+    tmbchar text[ TEXTBUF_SIZE ];
+
+    /* Number of frame elements found within a frameset */
+    int numFrames;
+
+    /* Number of 'longdesc' attributes found within a frameset */
+    int HasCheckedLongDesc;
+
+    int  CheckedHeaders;
+    int  ListElements;
+    int  OtherListElements;
+
+    /* For 'USEMAP' identifier */
+    Bool HasUseMap;
+    Bool HasName;
+    Bool HasMap;
+
+    /* For tracking nodes that are deleted from the original parse tree - TRT */
+    /* Node *access_tree; */
+
+    Bool HasTH;
+    Bool HasValidFor;
+    Bool HasValidId;
+    Bool HasValidRowHeaders;
+    Bool HasValidColumnHeaders;
+    Bool HasInvalidRowHeader;
+    Bool HasInvalidColumnHeader;
+    int  ForID;
+
+};
+
+
+void TY_(AccessibilityChecks)( TidyDocImpl* doc );
+
+
+#endif /* __ACCESS_H__ */