#include "pattern_replace.h"

#include <sys/types.h>//fstat
#include <sys/ioctl.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <stdlib.h>
void print_help(void)
{
	printf("Escape $ with \\$\n");
	printf("-i Input Text");
	printf("-f Find What\n");
	printf("-r Replace With\n");
}
int main(int argc, char ** argv)
{
	const char* find=NULL, *replacement=NULL, *input=NULL;
	
	int oc=0;
	if(argc<6)
	{
		print_help();
		return -1;
	}
	while((oc=getopt(argc,argv,"f:r:i:"))!=-1)
	{
		switch(oc)
		{
			case 'f':
				find=strdup(optarg);
				break;
			case 'r':
				replacement=strdup(optarg);
				break;
			case 'i':
				input=strdup(optarg);
				break;
			default:
				printf("Invalid parameter.\n");
				print_help();
				return -1;
		}
	}
	char* output=NULL;
	size_t output_sz=0;

	simple_replace(find, replacement, input, strlen(input),&output, &output_sz, 1);
	printf("Subject:   %s\n", input);
	printf("Subsitute: %s\n", output);
	free(output);	
	return 0;
}