How to determine the shortest path?

How to determine the URL, URI and Path in C or Objective-C?

• I need a way in C or Objective-C to separate the URI and the Path, given a full URL. Example: Given the URL mms://a11.l412923342423.c658546.g.lm.akamaistream.net/D/13/414392/v0001/reflector:36751 Getting the URL is easy, but how can I determine where the URI ends and where the Path starts, in C or Objective-C? I know that the URI is a11.l412923342423.c658546.g.lm.akamaistream.net and that the Path is D/13/414392/v0001/reflector:36751, but how to identify that programmatically? I can't figure that out and any sample code will GREATLY help me. Thank you.

• Answer:

  Looks like // denotes the start of the URI and a subsequent / marks the start of the path: char *uri_start; // Start of URI int uri_length; // Length of URI char *path_start; // Start of Path (until end of string) uri_start = strstr(url, "//"); if (uri_start == NULL) { uri_start = url; } else { uri_start += 2; // skip "//" } path_start = strstr(uri_start, "/"); if (path_start == NULL) { path_start = ""; // Path empty uri_length = strlen(uri_start); } else { path_start += 1; // skip "/" uri_length = path_start - uri_start - 1; } Edit: Copying the uri: char uri[300]; // or char *uri = malloc(uri_length + 1); memcpy(uri, uri_start, uri_length); // Copy the uri uri[uri_length] = '\0'; // nul-terminate the uri string or (if it is ok, to alter the original string): uri_start[uri_length] = '\0'; // nul-terminates the uri but alters the url