1 files changed, 72 insertions, 0 deletions
diff --git a/sfeed_web.c b/sfeed_web.c
new file mode 100644
index 0000000..c4bcb33
--- /dev/null
+++ b/sfeed_web.c
@@ -0,0 +1,72 @@
+#include <stdio.h>
+#include <string.h>
+#include <strings.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+#include "util.h"
+#include "xml.h"
+
+static unsigned int isbase = 0, islink = 0, isfeedlink = 0, found = 0;
+static char feedlink[4096], basehref[4096];
+
+static void
+xmltagstart(XMLParser *p, const char *tag, size_t taglen) {
+	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) {
+	if(isfeedlink) {
+		printlink(feedlink, basehref, 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) {
+
+	if(namelen != 4) /* optimization */
+		return;
+	if(isbase) {
+		if(!strncasecmp(name, "href", namelen))
+			strlcpy(basehref, value, sizeof(basehref) - 1);
+	} else if(islink) {
+		if(!strncasecmp(name, "type", namelen)) {
+			if(!strncasecmp(value, "application/atom", strlen("application/atom")) ||
+			   !strncasecmp(value, "application/rss", strlen("application/rss"))) {
+				isfeedlink = 1;
+			}
+		} else if(!strncasecmp(name, "href", namelen))
+			strlcpy(feedlink, value, sizeof(feedlink) - 1);
+	}
+}
+
+int
+main(int argc, char **argv) {
+	XMLParser x;
+
+	feedlink[0] = '\0';
+	/* base href */
+	if(argc > 1)
+		strlcpy(basehref, argv[1], sizeof(basehref) - 1);
+	else
+		basehref[0] = '\0';
+
+	xmlparser_init(&x);
+	x.xmltagstart = xmltagstart;
+	x.xmlattr = xmlattr;
+	x.xmltagstartparsed = xmltagstartparsed;
+
+	xmlparser_parse(&x);
+
+	return found ? EXIT_SUCCESS : EXIT_FAILURE;
+}