FSArgumentParser Sample Code

gistfile1.m

#import <Foundation/Foundation.h>
#import "FSArguments.h"

int main(int argc, const char * argv[]) {
  @autoreleasepool {
    FSArgumentSignature * helpFlag = [FSArgumentSignature argumentSignatureWithFormat:@"[-h --help]"];
    FSArgumentSignature * inFileFlag = [FSArgumentSignature argumentSignatureWithFormat:@"[-i --in-file]={1,}"];
    FSArgumentSignature * outFileFlag = [FSArgumentSignature argumentSignatureWithFormat:@"[-o --out-file]="];
    NSSet * signatures = [NSSet setWithObjects:helpFlag, inFileFlag, outFileFlag, nil];

    FSArgumentPackage * package = [[NSProcessInfo processInfo] fsargs_parseArgumentsWithSignatures:signatures];

    if ([package booleanValueOfSignature:helpFlag]) {
      printf("My Tool v1\n");
      printf("\n");
      printf("  my-tool -h -i file1 file2 -o file\n");
      printf("\n");
      printf("    -h --help               print out this message\n");
      printf("    -i --in-file file...    input files\n");
      printf("    -o --out-file file      output file\n");
      return 0;
    }
    if (0==[package countOfSignature:inFileFlag]) {
      printf("You didn't specify an input files.\n");
      return -1;
    } else if (0==[package countOfSignature:outFileFlag]) {
      printf("You didn't specify an output file.\n");
      return -1;
    }

    /* presumably you'd do something interesting here, like *
     * maybe concatenate all the files into the output file *
     * for kicks and giggles.                               */

    return 0;
  }
}