Question

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 1

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