util: add a_strsplit()

Signed-off-by: Julien Danjou <julien@danjou.info>

common/util.c

@@ -214,4 +214,39 @@ a_exec(const char *cmd)
     p_delete(&path);
 }
 
+/** Split a string in substring.
+ * \param str The string to split.
+ * \param len The string length.
+ * \param delim The string delimiter.
+ * \return A list of string NULL terminted.
+ */
+char **
+a_strsplit(const char *str, ssize_t len, char delim)
+{
+    char **retval;
+    int comp, i, j = 0, n = 1;
+
+    /* count components */
+    for(i = 0; i < len; i++)
+        if(str[i] == delim)
+            n++;
+
+    retval = p_new(char *, n);
+
+    for(i = 0, comp = 0; comp < n; comp++)
+    {
+        if(str[i] == delim)
+            i++;
+
+        for(j = i; str[j] != delim && j < len; j++);
+
+        retval[comp] = p_dup(&str[i], j - i + 1);
+        retval[comp][j - i] = '\0';
+
+        i = j;
+    }
+
+    return retval;
+}
+
 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80

common/util.h

@@ -328,6 +328,7 @@ const char * position_tostr(position_t);
 void *name_func_lookup(const char *, const name_func_link_t *);
 const char * name_func_rlookup(void *, const name_func_link_t *);
 void a_exec(const char *);
+char ** a_strsplit(const char *, ssize_t, char);
 
 #endif
 // vim: filetype=c:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=80