mirror of
https://gitlab.com/gnuwget/wget2.git
synced 2026-01-14 02:01:39 +00:00
108 lines
2.9 KiB
C
108 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2013 Tim Ruehsen
|
|
* Copyright (c) 2015-2024 Free Software Foundation, Inc.
|
|
*
|
|
* This file is part of libwget.
|
|
*
|
|
* Libwget is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* Libwget is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public License
|
|
* along with libwget. If not, see <https://www.gnu.org/licenses/>.
|
|
*
|
|
*
|
|
* Extracting URLs from RSS feeds (https://cyber.harvard.edu/rss/rss.html)
|
|
*
|
|
* Changelog
|
|
* 21.12.2013 Tim Ruehsen created
|
|
*
|
|
*/
|
|
|
|
#include <config.h>
|
|
|
|
#include <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
#include <c-ctype.h>
|
|
|
|
#include <wget.h>
|
|
#include "private.h"
|
|
|
|
struct rss_context {
|
|
wget_vector
|
|
*urls;
|
|
};
|
|
|
|
static void rss_get_url(void *context, int flags, const char *dir, const char *attr, const char *val, size_t len, size_t pos WGET_GCC_UNUSED)
|
|
{
|
|
struct rss_context *ctx = context;
|
|
wget_string * url;
|
|
|
|
if (!val || !len)
|
|
return;
|
|
|
|
if ((flags & XML_FLG_ATTRIBUTE)) {
|
|
if (!wget_strcasecmp_ascii(attr, "url") || !wget_strcasecmp_ascii(attr, "href")
|
|
|| !wget_strcasecmp_ascii(attr, "src") || !wget_strcasecmp_ascii(attr, "domain")
|
|
|| !wget_strcasecmp_ascii(attr, "xmlns") || !wget_strncasecmp_ascii(attr, "xmlns:", 6))
|
|
{
|
|
for (;len && c_isspace(*val); val++, len--); // skip leading spaces
|
|
for (;len && c_isspace(val[len - 1]); len--); // skip trailing spaces
|
|
|
|
if (!(url = wget_malloc(sizeof(wget_string))))
|
|
return;
|
|
|
|
url->p = val;
|
|
url->len = len;
|
|
|
|
if (!ctx->urls)
|
|
ctx->urls = wget_vector_create(32, NULL);
|
|
|
|
wget_vector_add(ctx->urls, url);
|
|
}
|
|
}
|
|
else if ((flags & XML_FLG_CONTENT)) {
|
|
const char *elem = strrchr(dir, '/');
|
|
|
|
if (elem) {
|
|
elem++;
|
|
|
|
if (!wget_strcasecmp_ascii(elem, "guid") || !wget_strcasecmp_ascii(elem, "link")
|
|
|| !wget_strcasecmp_ascii(elem, "comments") || !wget_strcasecmp_ascii(elem, "docs"))
|
|
{
|
|
for (;len && c_isspace(*val); val++, len--); // skip leading spaces
|
|
for (;len && c_isspace(val[len - 1]); len--); // skip trailing spaces
|
|
|
|
// debug_printf("#2 %02X %s %s '%.*s' %zd\n", flags, dir, attr, (int) len, val, len);
|
|
|
|
if (!(url = wget_malloc(sizeof(wget_string))))
|
|
return;
|
|
|
|
url->p = val;
|
|
url->len = len;
|
|
|
|
if (!ctx->urls)
|
|
ctx->urls = wget_vector_create(32, NULL);
|
|
|
|
wget_vector_add(ctx->urls, url);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void wget_rss_get_urls_inline(const char *rss, wget_vector **urls)
|
|
{
|
|
struct rss_context context = { .urls = NULL };
|
|
|
|
wget_xml_parse_buffer(rss, rss_get_url, &context, XML_HINT_REMOVE_EMPTY_CONTENT);
|
|
|
|
*urls = context.urls;
|
|
}
|