ch12-glob.c

linux编程精髓 源代码

/* ch12-glob.c --- demonstrate glob(). */

#include <stdio.h>
#include <errno.h>
#include <glob.h>

char *myname;

/* globerr --- print error message for glob() */

int globerr(const char *path, int eerrno)
{
	fprintf(stderr, "%s: %s: %s\n", myname, path, strerror(eerrno));
	return 0;	/* let glob() keep going */
}

/* main() --- expand command-line wildcards and print results */

int main(int argc, char **argv)
{
	int i;
	int flags = 0;
	glob_t results;
	int ret;

	if (argc == 1) {
		fprintf(stderr, "usage: %s wildcard ...\n", argv[0]);
		exit(1);
	}

	myname = argv[0];	/* for globerr() */

	for (i = 1; i < argc; i++) {
		flags |= (i > 1 ? GLOB_APPEND : 0);
		ret = glob(argv[i], flags, globerr, & results);
		if (ret != 0) {
			fprintf(stderr, "%s: problem with %s (%s), stopping early\n",
				myname, argv[i],
		/* ugly: */	(ret == GLOB_ABORTED ? "filesystem problem" :
				 ret == GLOB_NOMATCH ? "no match of pattern" :
				 ret == GLOB_NOSPACE ? "no dynamic memory" :
				 "unknown problem"));
			break;
		}
	}

	for (i = 0; i < results.gl_pathc; i++)
		printf("%s\n", results.gl_pathv[i]);

	globfree(& results);
	return 0;
}