chkfsize.c

来自「Boot code for ADM5120 with serial consol」· C语言 代码 · 共 42 行

/*
 *	Tool to determine whether a file exceeds a given size.
 *	Author: HH
 *	Copyright 2006 HH, All Rights Reserved
 */

#include <sys/stat.h>
#include <unistd.h>

void usage(char *me)
{
	printf("Usage: %s input-file MAXSIZE\n", me);
	printf("       where MAXSIZE is the maximum file size for which the program\n");
	printf("       will return 0.  If the input-file size is greater than MAXSIZE\n");
	printf("       the program will return 1.  Intended for use with Makefiles.\n");
}

int main(int argc, char** argv)
{
	char *infile = NULL;
	int fh, size, rc = 1;
	struct stat status;

	/*	Parse input arguments */
	if ((argc != 3) || (sscanf(argv[2], "%i", &size) != 1)) {
		usage((char *) basename(argv[0]));
	} else {
		/*	Input arguments look good */
		infile  = argv[1];
		if (stat(infile, &status) < 0) {
			printf("%s: Can't stat file \"%s\"\n", basename(argv[0]), infile);
		} else {
			if (status.st_size <= size)
				rc = 0;
			else
				printf("%s: File \"%s\" exceeds %d bytes (0x%.8X) in size\n", basename(argv[0]), infile, size, size);
		}
	}

	return rc;
}