Refactor code into utils, mfapi and mfshell

- utils is the low level library used by the others
 - mfapi uses utils and implements the api and some wrappers
 - mfshell uses mfapi and utils to provide a shell

utils/json.c

@@ -0,0 +1,106 @@
+/*
+ * Copyright (C) 2013 Bryan Christ <bryan.christ@mediafire.com>
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2, as published by
+ * the Free Software Foundation.
+ *
+ * This program 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 General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License along with
+ * this program; if not, write to the Free Software Foundation, Inc., 51
+ * Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
+ *
+ */
+
+
+#include <stdlib.h>
+#include <string.h>
+
+#include "json.h"
+#include "stringv.h"
+
+json_t*
+json_object_by_path(json_t *start,const char *path)
+{
+    char    **path_nodes;
+    char    **curr;
+    json_t  *node = NULL;
+    json_t  *data = NULL;
+
+    if(start == NULL) return NULL;
+    if(path == NULL) return NULL;
+
+    path_nodes = stringv_split((char*)path,"/",10);
+
+    if(path_nodes == NULL) return NULL;
+    curr = path_nodes;
+    node = start;
+
+    while(curr != NULL)
+    {
+        if(*curr == NULL) break;
+
+        node = json_object_get(node,*curr);
+        if(node == NULL) break;
+
+        if(!json_is_object(node))
+        {
+            stringv_free(path_nodes,STRINGV_FREE_ALL);
+            return NULL;
+        }
+
+        curr++;
+        data = node;
+    }
+
+    stringv_free(path_nodes,STRINGV_FREE_ALL);
+
+    return data;
+}
+
+    // fix a path with leading slashes
+/*
+    while(strlen(path) > 0)
+    {
+        if(*path[0] == '\')
+        {
+            path++;
+            continue;
+        }
+
+        len = strlen(path);
+        buffer = (char*)calloc(len + 1,sizeof(char));
+        strncpy(buffer,path,len);
+    }
+
+    // something went horribly wrong
+    if(buffer == NULL) return NULL;
+
+    pos = buffer[strlen(buffer) - 1];
+
+    // fix a path with trailing slashes
+    while(pos != buffer)
+    {
+        if(pos[0] == '/')
+        {
+            pos[0] = '\0';
+            pos--;
+            continue;
+        }
+
+        break;
+    }
+
+    // something else went horribly wrong
+    if(pos == buffer)
+    {
+        free(buffer);
+        return NULL;
+    }
+*/
+
+