Invoke an OSX service programatically with a specified string llvm-gcc InvokeService.m -o InvokeService -framework Cocoa

InvokeService.m

#import <Cocoa/Cocoa.h>

void usage(char* progName, NSString* s)
{
    NSLog(@"%@", s);
    NSLog(@"usage:\n");
    NSLog(@":%s <servicename> <pasteboard_contents>\n", progName);
}

int main(int argc, char** argv)
{
    if(argc != 3)
    {
        usage(argv[0], [NSString stringWithFormat:@"ERROR: Must specify exactly 2 arguments (%d were specified)\n", argc - 1]);
        return 1;
    }

    NSString* serviceName = [NSString stringWithCString:argv[1] encoding:NSASCIIStringEncoding];

    NSString* contentString = [NSString stringWithCString:argv[2] encoding:NSASCIIStringEncoding];
    NSPasteboard* pboard = [NSPasteboard pasteboardWithUniqueName];
    [pboard writeObjects:[NSArray arrayWithObject:contentString]];

    const BOOL success = NSPerformService(serviceName, pboard);

    if(!success)
    {
        NSLog(@"ERROR: Unable to invoke service '%@'\n", serviceName);
    }
    return success ? 0  : 1;
}