* Split out a fair bit of avahi-core into avahi-common for use by the client library

[catta] / avahi-common / alternative.c

diff --git a/avahi-common/alternative.c b/avahi-common/alternative.c
new file mode 100644 (file)
index 0000000..c9a0f48
--- /dev/null
+++ b/avahi-common/alternative.c
@@ -0,0 +1,81 @@
+/* $Id$ */
+
+/***
+  This file is part of avahi.
+ 
+  avahi 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 2.1 of the
+  License, or (at your option) any later version.
+ 
+  avahi 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 avahi; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <string.h>
+#include <stdlib.h>
+#include <ctype.h>
+
+#include "alternative.h"
+
+gchar * avahi_alternative_host_name(const gchar *s) {
+    const gchar *p, *e = NULL;
+    gchar *c, *r;
+    gint n;
+
+    g_assert(s);
+    
+    for (p = s; *p; p++)
+        if (!isdigit(*p))
+            e = p+1;
+
+    if (e && *e)
+        n = atoi(e)+1;
+    else
+        n = 2;
+
+    c = e ? g_strndup(s, e-s) : g_strdup(s);
+    r = g_strdup_printf("%s%i", c, n);
+    g_free(c);
+    
+    return r;
+    
+}
+
+gchar *avahi_alternative_service_name(const gchar *s) {
+    const gchar *e;
+    g_assert(s);
+
+    if ((e = strstr(s, " #"))) {
+        const gchar *n, *p;
+        e += 2;
+    
+        while ((n = strstr(e, " #")))
+            e = n + 2;
+
+        for (p = e; *p; p++)
+            if (!isdigit(*p)) {
+                e = NULL;
+                break;
+            }
+    }
+    
+    if (e) {
+        gchar *r, *c = g_strndup(s, e-s);
+        r = g_strdup_printf("%s%i", c, atoi(e)+1);
+        g_free(c);
+        return r;
+    } else
+        return g_strdup_printf("%s #2", s);
+}