Michael Laforest - 2015-01-04

I'm using this library to load and parse a configuration file for the program I'm working on. I like the JSON format and cJSON's API, but I wanted the config file to be able to have comments.

The following patch breaks the JSON standard by adding comment support.

# starts a comment and extends to the end of the line.

This is only for loading. It won't print comments since it skips them during parsing.

--- cJSON.c.bak 2015-01-04 16:58:25.250388258 -0500
+++ cJSON.c     2015-01-04 17:14:46.601329765 -0500
@@ -258,7 +258,21 @@
 static char *print_object(cJSON *item,int depth,int fmt);

 /* Utility to jump whitespace and cr/lf */
-static const char *skip(const char *in) {while (in && *in && (unsigned char)*in<=32) in++; return in;}
+static const char *skip(const char *in) {

+       int c = 0;
+
+       while (in && *in) {
+               if (*in == '#')         c = 1;
+               if (*in == '\n')        c = 0;
+
+               if (!c && ((unsigned char)*in > 32))
+                       break;
+
+               in++;
+       }
+
+       return in;
+}