/*
 * main.cpp
 *
 *  Created on: Aug 31, 2011
 *      Author: Tiberiu
 */


#include <stdio.h>
#include <string.h>
#include <ctype.h>

#include "app.h"
using namespace std;

void GetParams (char* buffer, char* params[4], int& count)
{
	bool inside_quotes = false;
	int len = strlen(buffer);
	count = 0;

	if (!isspace(buffer[0])) params[count++] = buffer;
	else buffer[0] = 0;

	for (int i = 1; i < len && count < 4; i++)
	{
		if (buffer[i] == '"') {
			inside_quotes = (inside_quotes) ? false : true;
			if (inside_quotes && buffer[i-1] == 0) params[count++] = &buffer[i];
			++i;
		}
		if (inside_quotes) continue;

		// Comment
		if (buffer[i] == '#') {
			buffer[i] = 0;
			break;
		}

		if (!isspace(buffer[i]) && (buffer[i-1]==0))
			params[count++] = &buffer[i];

		else if (isspace(buffer[i])) buffer[i] = 0;
	}
}

void ProcessLine (char* buffer, int lineno)
{
	char* argv[4]; int argc, res;
	GetParams(buffer, argv, argc);

	printf("%i: ", lineno);

	if (strcmp(argv[0], "CREATE") == 0) 		res = cmd_create(argv, argc);
	else if (strcmp(argv[0], "CLOSE") == 0) 	res = cmd_close(argv, argc);
	else if (strcmp(argv[0], "MKDIR") == 0) 	res = cmd_mkdir(argv, argc);
	else if (strcmp(argv[0], "CD") == 0) 		res = cmd_cd(argv, argc);
	else if (strcmp(argv[0], "ADD") == 0) 		res = cmd_add(argv, argc);
	else if (strcmp(argv[0], "SETFLAGS") == 0) 	res = cmd_setflags(argv, argc);
	else if (strcmp(argv[0], "" )) return;

	else printf("Invalid command %s, ignored.", argv[0]);

	if (!res) {
		printf("Syntax error!");
		exit(1);
	}

	printf("\n");
}


int main(int argc, char **argv) {

	char buffer[0x1000];
	int lineno = 0;

	// Make sure we have an argument
	if (argc < 2) {
		fprintf(stderr, "Missing argument - script file.");
		return 0;
	}

	// Try to open file
	FILE* input = fopen(argv[1], "r");
	if (!input) { perror(argv[1]); return 0; }

	// Read file line by line
	printf("Reading script...\n");
	while ( fgets(buffer, 0x1000, input) )
		ProcessLine(buffer, ++lineno);

	// Cleanup
	fclose(input);
	return 0;
}