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#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include "util.h"
#include "xml.h"
static unsigned int isbase, islink, isfeedlink, found;
static char abslink[4096], feedlink[4096], basehref[4096], feedtype[256];
static void
printfeedtype(const char *s, FILE *fp)
{
for (; *s; s++) {
if (!isspace((int)*s))
fputc(*s, fp);
}
}
static void
xmltagstart(XMLParser *p, const char *tag, size_t taglen)
{
(void)p;
isbase = islink = isfeedlink = 0;
if (taglen == 4) { /* optimization */
if (!strncasecmp(tag, "base", taglen))
isbase = 1;
else if (!strncasecmp(tag, "link", taglen))
islink = 1;
}
}
static void
xmltagstartparsed(XMLParser *p, const char *tag, size_t taglen, int isshort)
{
(void)p;
(void)tag;
(void)taglen;
(void)isshort;
if (isfeedlink) {
if (*feedtype) {
printfeedtype(feedtype, stdout);
putchar(' ');
}
if (absuri(feedlink, basehref, abslink, sizeof(abslink)) != -1)
fputs(abslink, stdout);
putchar('\n');
found++;
}
}
static void
xmlattr(XMLParser *p, const char *tag, size_t taglen, const char *name,
size_t namelen, const char *value, size_t valuelen)
{
(void)p;
(void)tag;
(void)taglen;
(void)valuelen;
if (namelen != 4) /* optimization */
return;
if (isbase) {
if (!strncasecmp(name, "href", namelen))
strlcpy(basehref, value, sizeof(basehref));
} else if (islink) {
if (!strncasecmp(name, "type", namelen)) {
if (!strncasecmp(value, "application/atom", strlen("application/atom")) ||
!strncasecmp(value, "application/xml", strlen("application/xml")) ||
!strncasecmp(value, "application/rss", strlen("application/rss"))) {
isfeedlink = 1;
strlcpy(feedtype, value, sizeof(feedtype));
}
} else if (!strncasecmp(name, "href", namelen)) {
strlcpy(feedlink, value, sizeof(feedlink));
}
}
}
int
main(int argc, char *argv[])
{
XMLParser parser;
if (argc > 1)
strlcpy(basehref, argv[1], sizeof(basehref));
memset(&parser, 0, sizeof(parser));
parser.xmltagstart = xmltagstart;
parser.xmlattr = xmlattr;
parser.xmltagstartparsed = xmltagstartparsed;
xmlparser_parse_fd(&parser, 0);
return found > 0 ? 0: 1;
}
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