source: trunk/ICeCoffEE/ICeCoffEE/GetNumericBundleVersion.c

/*
 *  GetNumericBundleVersion.c
 *  ICeCoffEE
 *
 *  Created by Nicholas Riley on 2/29/08.
 *  Copyright 2008 Nicholas Riley. All rights reserved.
 *
 */

#include <crt_externs.h>
#include <CoreFoundation/CoreFoundation.h>

void usage(const char *fmt, ...) {
    char *progname = **_NSGetArgv();
    if (fmt != NULL) {
        va_list ap;
        va_start(ap, fmt);
        fprintf(stderr, "%s: ", progname);
        vfprintf(stderr, fmt, ap);
        fputs("\n", stderr);
    }
    fprintf(stderr, "usage: %s bundle_path\n", progname);
    exit(1);
}

int main(int argc, char *argv[]) {
    if (argc != 2)
        usage(NULL);
    
    CFURLRef url = CFURLCreateFromFileSystemRepresentation(NULL, (UInt8 *)argv[1], strlen(argv[1]), true);
    if (url == NULL)
        usage(NULL);
    
    CFBundleRef bundle = CFBundleCreate(NULL, url);
    if (bundle == NULL)
        usage("can't create CFBundleRef from %s", argv[1]);
    
    UInt32 version = CFBundleGetVersionNumber(bundle);
    if (version == 0)
        usage("can't get version from %s", argv[1]);
    
    printf("%d\n", version);
    
    return 0;
}