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84 lines
2.7 KiB
C
84 lines
2.7 KiB
C
/* $Id: sgml.h,v 1.2 2004/09/24 00:44:59 jonas Exp $ */
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#ifndef EL__DOCUMENT_SGML_SGML_H
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#define EL__DOCUMENT_SGML_SGML_H
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#include <stdlib.h>
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#include "document/dom/navigator.h"
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/* The flags stored in the attribute sgml node info data */
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/* TODO: Other potential flags (there can be only 16)
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*
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* - interaction info for forms (diabled, readonly, maxlength) maybe tabindex,
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* - table layout,
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* - generic layout style attributes maybe giving color values an additional flag,
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* - meta information (rel, rev, title, alt, summary, caption, standby, lang),
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* - scripting hooks (onblur, ...)
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* - information about the referenced content (hreflang, codetype, media, type)
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*
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* Anyway the flags should of course optimally have a purpose to speed things up
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* by quickly making it possible to identify certain attribute groups. --jonas */
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enum sgml_attribute_flags {
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/* The value uniquely identifies the owner */
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SGML_ATTRIBUTE_IDENTIFIER = 1,
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/* The value contains an URI of some sort */
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SGML_ATTRIBUTE_REFERENCE = 2,
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};
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/* TODO: We also need an element flag to signal to the parser that all the
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* content should be skipped; possible with some ugly hacks to not use the
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* scanner since it could get confused. The purpose of this flag is to group
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* all element content in one text node. Kind of like a ``verbatim'' thing
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* where not parsing should be done. For HTML the <script> and <style> tags
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* should use it. */
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enum sgml_element_flags {
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/* The start and end tags are optional */
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SGML_ELEMENT_OPTIONAL = 1,
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/* The element is empty and end tags are forbidden */
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SGML_ELEMENT_EMPTY = 2,
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/* The end tag is obtional */
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SGML_ELEMENT_END_OPTIONAL = 4,
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};
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struct sgml_node_info {
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unsigned char *string;
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int length;
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uint16_t type;
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uint16_t flags;
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};
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#define SGML_NODE_HEAD(doctype, nodetype) \
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{ NULL, doctype##_##nodetype##S - 1, doctype##_##nodetype##_UNKNOWN }
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#define SGML_NODE_INFO(doctype, nodetype, name, data) \
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{ #name, sizeof(#name) - 1, doctype##_##nodetype##_##name, data }
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#define SGML_NODE_INF2(doctype, nodetype, name, ident, data) \
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{ ident, sizeof(ident) - 1, doctype##_##nodetype##_##name, data }
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#define SGML_NODE_INFO_TYPE(doctype, nodetype, name) doctype##_##nodetype##_##name
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int sgml_info_strcmp(const void *key, const void *node);
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static inline struct sgml_node_info *
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get_sgml_node_info(struct sgml_node_info list[], struct dom_node *node)
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{
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struct sgml_node_info *map = &list[1];
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size_t map_size = list->length;
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size_t obj_size = sizeof(struct sgml_node_info);
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void *match = bsearch(node, map, map_size, obj_size, sgml_info_strcmp);
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return match ? match : list;
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}
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struct sgml_info {
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struct sgml_node_info *attributes;
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struct sgml_node_info *elements;
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dom_navigator_callback_T callbacks[DOM_NODES];
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};
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#endif
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