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Working multifeed RSS - needs testing

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git-svn-id: https://conky.svn.sourceforge.net/svnroot/conky/trunk/conky1@872 7f574dfc-610e-0410-a909-a81674777703
This commit is contained in:
Toni Spets 2007-06-01 15:49:49 +00:00
parent debd3bd151
commit 92e5028b99
3 changed files with 223 additions and 50 deletions
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180
src/prss.c
View File

@ -1,3 +1,20 @@
/*
* Copyright (c) 2007 Mikko Sysikaski <mikko.sysikaski@gmail.com>
* Toni Spets <toni.spets@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <libxml/parser.h>
#include <libxml/tree.h>
#include <string.h>
@ -17,8 +34,7 @@ PRSS* prss_parse_data(const char* xml_data)
if (!doc)
return NULL;
PRSS* data = get_data(doc);
return data;
return get_data(doc);
}
PRSS* prss_parse_file(const char* xml_file)
{
@ -26,18 +42,33 @@ PRSS* prss_parse_file(const char* xml_file)
if (!doc)
return NULL;
PRSS* data = get_data(doc);
return data;
return get_data(doc);
}
void prss_free(PRSS* data)
{
if (!data)
return;
xmlFreeDoc(data->_data);
free(data->items);
free(data);
}
static inline void prss_null(PRSS* p)
{
p->title = p->link = p->description = p->language = NULL;
p->items = NULL;
p->item_count = 0;
}
static inline void prss_null_item(PRSS_Item* i)
{
i->title = i->link = i->description = i->category = i->pubdate = NULL;
}
static inline void read_item(PRSS_Item* res, xmlNodePtr data)
{
res->title = res->link = res->description = 0;
prss_null_item(res);
res->title = res->link = res->description = NULL;
for(; data; data = data->next) {
if (data->type != XML_ELEMENT_NODE)
continue;
@ -55,51 +86,126 @@ static inline void read_item(PRSS_Item* res, xmlNodePtr data)
res->category = (char*)child->content;
} else if (!strcmp((char*)data->name, "pubDate")) {
res->pubdate = (char*)child->content;
} else if (!strcmp((char*)data->name, "guid")) {
res->guid = (char*)child->content;
}
}
}
PRSS* get_data(xmlDocPtr doc)
static inline void read_element(PRSS* res, xmlNodePtr n)
{
PRSS* result = malloc(sizeof(PRSS));
xmlNodePtr channel = xmlDocGetRootElement(doc)->children->next;
if (!channel) {
fprintf(stderr, "Got root? No!\n");
return NULL;
if (n->type != XML_ELEMENT_NODE)
return;
xmlNodePtr child = n->children;
if (!child)
return;
if (!strcmp((char*)n->name, "title")) {
res->title = (char*)child->content;
} else if (!strcmp((char*)n->name, "link")) {
res->link = (char*)child->content;
} else if (!strcmp((char*)n->name, "description")) {
res->description = (char*)child->content;
} else if (!strcmp((char*)n->name, "language")) {
res->language = (char*)child->content;
} else if (!strcmp((char*)n->name, "pubDate")) {
res->pubdate = (char*)child->content;
} else if (!strcmp((char*)n->name, "lastBuildDate")) {
res->lastbuilddate = (char*)child->content;
} else if (!strcmp((char*)n->name, "generator")) {
res->generator = (char*)child->content;
} else if (!strcmp((char*)n->name, "docs")) {
res->docs = (char*)child->content;
} else if (!strcmp((char*)n->name, "managingEditor")) {
res->managingeditor = (char*)child->content;
} else if (!strcmp((char*)n->name, "webMaster")) {
res->webmaster = (char*)child->content;
} else if (!strcmp((char*)n->name, "item")) {
read_item(&res->items[res->item_count++], n->children);
}
result->_data = doc;
result->title = result->link = result->description = result->language = NULL;
/* Get item count */
}
static inline int parse_rss_2_0(PRSS* res, xmlNodePtr root)
{
xmlNodePtr channel = root->children;
while(channel && (channel->type!=XML_ELEMENT_NODE || strcmp((char*)channel->name, "channel")))
channel = channel->next;
if (!channel)
return 0;
int items = 0;
xmlNodePtr n;
for(n = channel->children; n; n = n->next)
if (n->type==XML_ELEMENT_NODE && !strcmp((char*)n->name, "item"))
++items;
res->items = malloc(items*sizeof(PRSS_Item));
res->item_count = 0;
result->item_count = items;
result->items = malloc(items*sizeof(PRSS_Item));
int cur_item = 0;
for(n = channel->children; n; n = n->next) {
if (n->type != XML_ELEMENT_NODE)
continue;
xmlNodePtr child = n->children;
if (!child)
continue;
if (!strcmp((char*)n->name, "title")) {
result->title = (char*)child->content;
} else if (!strcmp((char*)n->name, "link")) {
result->link = (char*)child->content;
} else if (!strcmp((char*)n->name, "description")) {
result->description = (char*)child->content;
} else if (!strcmp((char*)n->name, "language")) {
result->language = (char*)child->content;
} else if (!strcmp((char*)n->name, "item")) {
read_item(&result->items[cur_item++], n->children);
read_element(res, n);
}
return 1;
}
static inline int parse_rss_1_0(PRSS* res, xmlNodePtr root)
{
int items = 0;
xmlNodePtr n;
for(n = root->children; n; n = n->next) {
if (n->type==XML_ELEMENT_NODE) {
if (!strcmp((char*)n->name, "item"))
++items;
else if (!strcmp((char*)n->name, "channel")) {
xmlNodePtr i;
for(i = n->children; i; i = i->next) {
read_element(res, i);
}
}
}
}
return result;
res->items = malloc(items*sizeof(PRSS_Item));
res->item_count = 0;
for(n = root->children; n; n = n->next) {
if (n->type==XML_ELEMENT_NODE && !strcmp((char*)n->name, "item"))
read_item(&res->items[res->item_count++], n->children);
}
return 1;
}
static inline int parse_rss_0_9x(PRSS* res, xmlNodePtr root)
{
// almost same...
return parse_rss_2_0(res, root);
}
PRSS* get_data(xmlDocPtr doc)
{
xmlNodePtr root = xmlDocGetRootElement(doc);
PRSS* result = malloc(sizeof(PRSS));
prss_null(result);
result->_data = doc;
do {
if (root->type == XML_ELEMENT_NODE) {
if (!strcmp((char*)root->name, "RDF")) {
// RSS 1.0 document
if (!parse_rss_1_0(result, root)) {
free(result);
return NULL;
}
return result;
} else if (!strcmp((char*)root->name, "rss")) {
// RSS 2.0 or <1.0 document
if (!parse_rss_2_0(result, root)) {
free(result);
return NULL;
}
return result;
}
}
root = root->next;
} while(root);
free(result);
return NULL;
}

24
src/prss.h
View File

@ -1,3 +1,20 @@
/*
* Copyright (c) 2007 Mikko Sysikaski <mikko.sysikaski@gmail.com>
* Toni Spets <toni.spets@gmail.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#ifndef PRSS_H
#define PRSS_H
@ -9,6 +26,7 @@ typedef struct PRSS_Item_ {
char* description;
char* category;
char* pubdate;
char* guid;
} PRSS_Item;
typedef struct PRSS_ {
@ -18,6 +36,12 @@ typedef struct PRSS_ {
char* link;
char* description;
char* language;
char* generator;
char* managingeditor;
char* webmaster;
char* docs;
char* lastbuilddate;
char* pubdate;
PRSS_Item* items;
int item_count;

69
src/rss.c
View File

@ -1,6 +1,9 @@
/*
* rss.c
* RSS stuff (prss version)
*
* prss.c and prss.h written by Sisu (Mikko Sysikaski)
* new rss.c written by hifi (Toni Spets)
*/
#include <stdio.h>
@ -12,13 +15,22 @@
#include <curl/types.h>
#include <curl/easy.h>
PRSS* save = NULL;
#define MAX_FEEDS 16
struct MemoryStruct {
char *memory;
size_t size;
};
typedef struct feed_ {
char* uri;
int last_update;
PRSS* data;
} feed;
int num_feeds = 0;
feed feeds[MAX_FEEDS];
size_t
WriteMemoryCallback(void *ptr, size_t size, size_t nmemb, void *data)
{
@ -35,22 +47,21 @@ WriteMemoryCallback(void *ptr, size_t size, size_t nmemb, void *data)
}
int rss_delay(int delay)
int rss_delay(int *wait, int delay)
{
static int wait = 0;
time_t now = time(NULL);
// make it minutes
if(delay < 1) delay = 1;
delay *= 60;
if(!wait) {
wait = now + delay;
if(!*wait) {
*wait = now + delay;
return 1;
}
if(now >= wait + delay) {
wait = now + delay;
if(now >= *wait + delay) {
*wait = now + delay;
return 1;
}
@ -62,15 +73,45 @@ get_rss_info(char *uri, int delay)
{
CURL *curl = NULL;
CURLcode res;
// curl temps
struct MemoryStruct chunk;
chunk.memory = NULL;
chunk.size = 0;
if(!rss_delay(delay))
return save; // wait for delay to pass
// pointers to struct
feed *curfeed = NULL;
PRSS *curdata = NULL;
int *last_update = 0;
if(save != NULL)
prss_free(save); // clean up old data
int i;
// first seek for the uri in list
if(num_feeds > 0) {
for(i = 0; i < num_feeds; i++) {
if(feeds[i].uri != NULL)
if(!strcmp(feeds[i].uri, uri)) {
curfeed = &feeds[i];
break;
}
}
}
if(!curfeed) { // new feed
if(num_feeds == MAX_FEEDS-1) return NULL;
curfeed = &feeds[num_feeds];
curfeed->uri = (char *)malloc(sizeof(char) * strlen(uri)+1);
strncpy(curfeed->uri, uri, strlen(uri)+1);
num_feeds++;
}
last_update = &curfeed->last_update;
curdata = curfeed->data;
if(!rss_delay(last_update, delay))
return curdata; // wait for delay to pass
if(curdata != NULL)
prss_free(curdata); // clean up old data
curl = curl_easy_init();
if(curl) {
@ -82,12 +123,14 @@ get_rss_info(char *uri, int delay)
res = curl_easy_perform(curl);
if(chunk.size) {
save = prss_parse_data(chunk.memory);
curdata = prss_parse_data(chunk.memory);
free(chunk.memory);
}
curfeed->data = curdata;
curl_easy_cleanup(curl);
}
return save;
return curdata;
}