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94 lines
1.9 KiB
94 lines
1.9 KiB
/* block-level tags for passing html blocks through the blender
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*/
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#define __WITHOUT_AMALLOC 1
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#include "cstring.h"
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#include "tags.h"
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STRING(struct kw) extratags;
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/* the standard collection of tags are built and sorted when
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* discount is configured, so all we need to do is pull them
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* in and use them.
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*
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* Additional tags still need to be allocated, sorted, and deallocated.
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*/
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#include "blocktags"
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/* define an additional html block tag
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*/
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void
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mkd_define_tag(char *id, int selfclose)
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{
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struct kw *p;
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/* only add the new tag if it doesn't exist in
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* either the standard or extra tag tables.
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*/
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if ( !(p = mkd_search_tags(id, strlen(id))) ) {
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/* extratags could be deallocated */
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if ( S(extratags) == 0 )
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CREATE(extratags);
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p = &EXPAND(extratags);
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p->id = id;
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p->size = strlen(id);
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p->selfclose = selfclose;
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}
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}
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/* case insensitive string sort (for qsort() and bsearch() of block tags)
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*/
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static int
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casort(struct kw *a, struct kw *b)
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{
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if ( a->size != b->size )
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return a->size - b->size;
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return strncasecmp(a->id, b->id, b->size);
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}
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/* stupid cast to make gcc shut up about the function types being
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* passed into qsort() and bsearch()
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*/
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typedef int (*stfu)(const void*,const void*);
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/* sort the list of extra html block tags for later searching
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*/
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void
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mkd_sort_tags()
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{
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qsort(T(extratags), S(extratags), sizeof(struct kw), (stfu)casort);
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}
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/* look for a token in the html block tag list
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*/
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struct kw*
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mkd_search_tags(char *pat, int len)
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{
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struct kw key;
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struct kw *ret;
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key.id = pat;
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key.size = len;
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if ( (ret=bsearch(&key,blocktags,NR_blocktags,sizeof key,(stfu)casort)) )
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return ret;
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if ( S(extratags) )
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return bsearch(&key,T(extratags),S(extratags),sizeof key,(stfu)casort);
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return 0;
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}
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/* destroy the extratags list (for shared libraries)
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*/
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void
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mkd_deallocate_tags()
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{
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if ( S(extratags) > 0 )
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DELETE(extratags);
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} /* mkd_deallocate_tags */
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