mirror of
https://github.com/RetroShare/RetroShare.git
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3be22536df
git-svn-id: http://svn.code.sf.net/p/retroshare/code/branches/v0.5-gxs-b1@5953 b45a01b8-16f6-495d-af2f-9b41ad6348cc
118 lines
2.8 KiB
C
118 lines
2.8 KiB
C
/* parsing_functions.c - Functions for parsing markdown and
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* freeing element lists. */
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/* These yy_* functions come from markdown_parser.c which is
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* generated from markdown_parser.leg
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* */
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typedef int (*yyrule)();
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extern int yyparse();
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extern int yyparsefrom(yyrule);
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extern int yy_References();
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extern int yy_Notes();
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extern int yy_Doc();
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#include "utility_functions.h"
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#include "parsing_functions.h"
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#include "markdown_peg.h"
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static void free_element_contents(element elt);
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/* free_element_list - free list of elements recursively */
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void free_element_list(element * elt) {
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element * next = NULL;
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while (elt != NULL) {
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next = elt->next;
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free_element_contents(*elt);
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if (elt->children != NULL) {
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free_element_list(elt->children);
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elt->children = NULL;
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}
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free(elt);
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elt = next;
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}
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}
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/* free_element_contents - free element contents depending on type */
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static void free_element_contents(element elt) {
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switch (elt.key) {
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case STR:
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case SPACE:
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case RAW:
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case HTMLBLOCK:
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case HTML:
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case VERBATIM:
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case CODE:
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case NOTE:
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free(elt.contents.str);
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elt.contents.str = NULL;
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break;
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case LINK:
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case IMAGE:
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case REFERENCE:
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free(elt.contents.link->url);
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elt.contents.link->url = NULL;
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free(elt.contents.link->title);
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elt.contents.link->title = NULL;
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free_element_list(elt.contents.link->label);
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free(elt.contents.link);
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elt.contents.link = NULL;
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break;
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default:
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;
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}
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}
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/* free_element - free element and contents */
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void free_element(element *elt) {
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free_element_contents(*elt);
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free(elt);
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}
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element * parse_references(char *string, int extensions) {
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char *oldcharbuf;
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syntax_extensions = extensions;
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oldcharbuf = charbuf;
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charbuf = string;
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yyparsefrom(yy_References); /* first pass, just to collect references */
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charbuf = oldcharbuf;
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return references;
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}
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element * parse_notes(char *string, int extensions, element *reference_list) {
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char *oldcharbuf;
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notes = NULL;
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syntax_extensions = extensions;
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if (extension(EXT_NOTES)) {
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references = reference_list;
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oldcharbuf = charbuf;
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charbuf = string;
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yyparsefrom(yy_Notes); /* second pass for notes */
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charbuf = oldcharbuf;
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}
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return notes;
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}
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element * parse_markdown(char *string, int extensions, element *reference_list, element *note_list) {
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char *oldcharbuf;
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syntax_extensions = extensions;
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references = reference_list;
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notes = note_list;
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oldcharbuf = charbuf;
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charbuf = string;
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yyparsefrom(yy_Doc);
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charbuf = oldcharbuf; /* restore charbuf to original value */
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return parse_result;
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}
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