mirror of
https://github.com/netsurf-browser/netsurf
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100 lines
2.4 KiB
C
100 lines
2.4 KiB
C
/*
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* Copyright 2010 John-Mark Bell <jmb@netsurf-browser.org>
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*
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* This file is part of NetSurf, http://www.netsurf-browser.org/
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*
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* NetSurf 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; version 2 of the License.
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*
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* NetSurf 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 this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdlib.h>
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#include "utils/http/generics.h"
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#include "utils/http/primitives.h"
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/**
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* Destructor for an item list
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*
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* \param list List to destroy
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*/
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void http___item_list_destroy(http__item *list)
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{
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while (list != NULL) {
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http__item *victim = list;
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list = victim->next;
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victim->free(victim);
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}
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}
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/**
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* Parse a list of items
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*
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* \param input Pointer to current input byte. Updated on exit.
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* \param itemparser Pointer to function to parse list items
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* \param first Pointer to first item, or NULL.
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* \param parameters Pointer to location to receive on-heap parameter list.
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* \return NSERROR_OK on success,
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* NSERROR_NOMEM on memory exhaustion,
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* NSERROR_NOT_FOUND if no items could be parsed
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*
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* The returned list is owned by the caller
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*
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* \note Ownership of the \a first item is passed to this function.
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*/
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nserror http___item_list_parse(const char **input,
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http__itemparser itemparser, http__item *first,
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http__item **items)
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{
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const char *pos = *input;
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const char separator = *pos;
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http__item *item;
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http__item *list = first;
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nserror error = NSERROR_OK;
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/* 1*( <separator> <item> ) */
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while (*pos == separator) {
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pos++;
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http__skip_LWS(&pos);
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error = itemparser(&pos, &item);
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if (error == NSERROR_OK) {
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if (list != NULL)
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item->next = list;
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list = item;
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http__skip_LWS(&pos);
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} else if (error != NSERROR_NOT_FOUND) {
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/* Permit <separator> LWS <separator> */
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break;
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}
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}
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if (error != NSERROR_OK && error != NSERROR_NOT_FOUND) {
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http__item_list_destroy(list);
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} else if (list == NULL) {
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error = NSERROR_NOT_FOUND;
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} else {
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error = NSERROR_OK;
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*items = list;
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*input = pos;
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}
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return error;
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}
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