93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/*
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* parser.c
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*
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* Copyright (C) 2015 James Booth <boothj5@gmail.com>
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*
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* This file is part of Stabber.
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*
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* Stabber is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* Stabber is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with Stabber. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#include <string.h>
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#include <expat.h>
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#include <glib.h>
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#include "server/stanza.h"
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typedef struct parse_state_t {
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int depth;
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XMPPStanza *curr_stanza;
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} ParseState;
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static void
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start_element(void *data, const char *element, const char **attributes)
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{
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ParseState *state = data;
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XMPPStanza *stanza = stanza_new(element, attributes);
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if (state->depth == 0) {
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state->curr_stanza = stanza;
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state->curr_stanza->parent = NULL;
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} else {
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stanza->parent = state->curr_stanza;
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state->curr_stanza = stanza;
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}
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state->depth++;
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}
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static void
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end_element(void *data, const char *element)
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{
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ParseState *state = data;
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state->depth--;
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if (state->depth > 0) {
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stanza_add_child(state->curr_stanza->parent, state->curr_stanza);
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state->curr_stanza = state->curr_stanza->parent;
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}
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}
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static void
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handle_data(void *data, const char *content, int length)
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{
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ParseState *state = data;
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if (!state->curr_stanza->content) {
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state->curr_stanza->content = g_string_new("");
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}
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g_string_append_len(state->curr_stanza->content, content, length);
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}
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XMPPStanza *
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parse_stanza(char *stanza_text)
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{
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ParseState *state = malloc(sizeof(ParseState));
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state->depth = 0;
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state->curr_stanza = NULL;
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XML_Parser parser = XML_ParserCreate(NULL);
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XML_SetElementHandler(parser, start_element, end_element);
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XML_SetCharacterDataHandler(parser, handle_data);
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XML_SetUserData(parser, state);
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XML_Parse(parser, stanza_text, strlen(stanza_text), 0);
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XML_ParserFree(parser);
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return state->curr_stanza;
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}
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