/* vi: set sw=4 ts=4: *//* * parse_num.c		- Parse the number of blocks * * Copyright (C) 2004,2005  Theodore Ts'o <tytso@mit.edu> * * This file can be redistributed under the terms of the GNU Library General * Public License */#include "e2p.h"#include <stdlib.h>unsigned long parse_num_blocks(const char *arg, int log_block_size){	char *p;	unsigned long long num;	num = strtoull(arg, &p, 0);	if (p[0] && p[1])		return 0;	switch (*p) {		/* Using fall-through logic */	case 'T': case 't':		num <<= 10;	case 'G': case 'g':		num <<= 10;	case 'M': case 'm':		num <<= 10;	case 'K': case 'k':		num >>= log_block_size;		break;	case 's':		num >>= 1;		break;	case '\0':		break;	default:		return 0;	}	return num;}#ifdef DEBUG#include <unistd.h>#include <stdio.h>main(int argc, char **argv){	unsigned long num;	int log_block_size = 0;	if (argc != 2) {		fprintf(stderr, "Usage: %s arg\n", argv[0]);		exit(1);	}	num = parse_num_blocks(argv[1], log_block_size);	printf("Parsed number: %lu\n", num);	exit(0);}#endif