mirror of
https://github.com/Llewellynvdm/conky.git
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b6d1465635
git-svn-id: https://conky.svn.sourceforge.net/svnroot/conky/trunk/conky1@873 7f574dfc-610e-0410-a909-a81674777703
210 lines
5.6 KiB
C
210 lines
5.6 KiB
C
/*
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* Copyright (c) 2007 Mikko Sysikaski <mikko.sysikaski@gmail.com>
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* Toni Spets <toni.spets@gmail.com>
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*
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* Permission to use, copy, modify, and distribute this software for any
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* purpose with or without fee is hereby granted, provided that the above
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* copyright notice and this permission notice appear in all copies.
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*
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* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
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* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
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* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
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* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
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* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
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* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
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* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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*/
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#include <libxml/parser.h>
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#include <libxml/tree.h>
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#include <string.h>
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#include <stdlib.h>
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#include <stdio.h>
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#include "prss.h"
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#ifndef PARSE_OPTIONS
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#define PARSE_OPTIONS 0
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#endif
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PRSS* prss_parse_data(const char* xml_data)
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{
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xmlDocPtr doc = xmlReadMemory(xml_data, strlen(xml_data), "", NULL, PARSE_OPTIONS);
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if (!doc)
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return NULL;
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return prss_parse_doc(doc);
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}
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PRSS* prss_parse_file(const char* xml_file)
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{
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xmlDocPtr doc = xmlReadFile(xml_file, NULL, PARSE_OPTIONS);
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if (!doc)
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return NULL;
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return prss_parse_doc(doc);
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}
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void prss_free(PRSS* data)
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{
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if (!data)
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return;
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xmlFreeDoc(data->_data);
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free(data->items);
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free(data);
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}
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static inline void prss_null(PRSS* p)
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{
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memset(p, 0, sizeof(PRSS));
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}
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static inline void prss_null_item(PRSS_Item* i)
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{
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memset(i, 0, sizeof(PRSS_Item));
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}
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static inline void read_item(PRSS_Item* res, xmlNodePtr data)
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{
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prss_null_item(res);
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res->title = res->link = res->description = NULL;
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for(; data; data = data->next) {
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if (data->type != XML_ELEMENT_NODE)
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continue;
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xmlNodePtr child = data->children;
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if (!child)
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continue;
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if (!strcmp((char*)data->name, "title")) {
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res->title = (char*)child->content;
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} else if (!strcmp((char*)data->name, "link")) {
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res->link = (char*)child->content;
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} else if (!strcmp((char*)data->name, "description")) {
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res->description = (char*)child->content;
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} else if (!strcmp((char*)data->name, "category")) {
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res->category = (char*)child->content;
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} else if (!strcmp((char*)data->name, "pubDate")) {
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res->pubdate = (char*)child->content;
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} else if (!strcmp((char*)data->name, "guid")) {
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res->guid = (char*)child->content;
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}
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}
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}
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static inline void read_element(PRSS* res, xmlNodePtr n)
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{
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if (n->type != XML_ELEMENT_NODE)
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return;
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xmlNodePtr child = n->children;
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if (!child)
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return;
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if (!strcmp((char*)n->name, "title")) {
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res->title = (char*)child->content;
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} else if (!strcmp((char*)n->name, "link")) {
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res->link = (char*)child->content;
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} else if (!strcmp((char*)n->name, "description")) {
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res->description = (char*)child->content;
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} else if (!strcmp((char*)n->name, "language")) {
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res->language = (char*)child->content;
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} else if (!strcmp((char*)n->name, "pubDate")) {
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res->pubdate = (char*)child->content;
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} else if (!strcmp((char*)n->name, "lastBuildDate")) {
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res->lastbuilddate = (char*)child->content;
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} else if (!strcmp((char*)n->name, "generator")) {
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res->generator = (char*)child->content;
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} else if (!strcmp((char*)n->name, "docs")) {
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res->docs = (char*)child->content;
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} else if (!strcmp((char*)n->name, "managingEditor")) {
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res->managingeditor = (char*)child->content;
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} else if (!strcmp((char*)n->name, "webMaster")) {
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res->webmaster = (char*)child->content;
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} else if (!strcmp((char*)n->name, "item")) {
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read_item(&res->items[res->item_count++], n->children);
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}
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}
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static inline int parse_rss_2_0(PRSS* res, xmlNodePtr root)
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{
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xmlNodePtr channel = root->children;
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while(channel
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&& (channel->type!=XML_ELEMENT_NODE
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|| strcmp((char*)channel->name, "channel")))
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channel = channel->next;
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if (!channel)
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return 0;
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int items = 0;
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xmlNodePtr n;
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for(n = channel->children; n; n = n->next)
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if (n->type==XML_ELEMENT_NODE && !strcmp((char*)n->name, "item"))
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++items;
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res->items = malloc(items*sizeof(PRSS_Item));
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res->item_count = 0;
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for(n = channel->children; n; n = n->next) {
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read_element(res, n);
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}
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return 1;
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}
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static inline int parse_rss_1_0(PRSS* res, xmlNodePtr root)
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{
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int items = 0;
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xmlNodePtr n;
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for(n = root->children; n; n = n->next) {
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if (n->type==XML_ELEMENT_NODE) {
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if (!strcmp((char*)n->name, "item"))
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++items;
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else if (!strcmp((char*)n->name, "channel")) {
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xmlNodePtr i;
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for(i = n->children; i; i = i->next) {
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read_element(res, i);
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}
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}
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}
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}
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res->items = malloc(items*sizeof(PRSS_Item));
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res->item_count = 0;
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for(n = root->children; n; n = n->next) {
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if (n->type==XML_ELEMENT_NODE && !strcmp((char*)n->name, "item"))
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read_item(&res->items[res->item_count++], n->children);
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}
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return 1;
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}
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static inline int parse_rss_0_9x(PRSS* res, xmlNodePtr root)
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{
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// almost same...
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return parse_rss_2_0(res, root);
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}
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PRSS* prss_parse_doc(xmlDocPtr doc)
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{
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xmlNodePtr root = xmlDocGetRootElement(doc);
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PRSS* result = malloc(sizeof(PRSS));
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prss_null(result);
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result->_data = doc;
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do {
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if (root->type == XML_ELEMENT_NODE) {
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if (!strcmp((char*)root->name, "RDF")) {
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// RSS 1.0 document
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if (!parse_rss_1_0(result, root)) {
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free(result);
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return NULL;
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}
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return result;
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} else if (!strcmp((char*)root->name, "rss")) {
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// RSS 2.0 or <1.0 document
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if (!parse_rss_2_0(result, root)) {
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free(result);
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return NULL;
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}
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return result;
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}
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}
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root = root->next;
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} while(root);
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free(result);
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return NULL;
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}
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