mirror of https://github.com/cc65/cc65.git
116 lines
2.8 KiB
C
116 lines
2.8 KiB
C
/* rename-test.c
|
|
**
|
|
**
|
|
** A simple test of the rename function.
|
|
**
|
|
** 2008-10-06, Greg King
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
|
|
static FILE* file;
|
|
static int r;
|
|
static char name1[16], name2[16];
|
|
|
|
int main(void)
|
|
{
|
|
/* Generate two temporary file-names that have a random, unused spelling. */
|
|
_randomize();
|
|
for (;;) {
|
|
r = rand();
|
|
sprintf(name1, "r%04.4u.1", (unsigned)r);
|
|
sprintf(name2, "r%04.4u.2", (unsigned)r);
|
|
|
|
/* Ensure that neither file-name exists. */
|
|
errno = 0;
|
|
file = fopen(name1, "r");
|
|
if (file != NULL) {
|
|
fclose(file);
|
|
continue; /* try a different spelling */
|
|
}
|
|
|
|
/* Make sure that fopen() failed for the right reason. */
|
|
if (errno != ENOENT) {
|
|
perror("Disk error with first name");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
errno = 0;
|
|
file = fopen(name2, "r");
|
|
if (file != NULL) {
|
|
fclose(file);
|
|
continue;
|
|
}
|
|
if (errno != ENOENT) {
|
|
perror("Disk error with second name");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
break; /* neither one exists; do next step */
|
|
}
|
|
|
|
/* Create the first file.
|
|
** Close it without writing anything because only its name is important.
|
|
*/
|
|
printf("Creating file: %s\n", name1);
|
|
file = fopen(name1, "w");
|
|
if (file == NULL) {
|
|
_poserror("Disk error making first file");
|
|
return EXIT_FAILURE;
|
|
}
|
|
fclose(file);
|
|
|
|
/* Verify that the file-name exists now. */
|
|
file = fopen(name1, "r");
|
|
if (file == NULL) {
|
|
_poserror("Cannot find first name");
|
|
return EXIT_FAILURE;
|
|
}
|
|
fclose(file);
|
|
|
|
/* Whew! Finally, we get to the reason why this program exists:
|
|
** Confirm that the first file-name can be changed into the second
|
|
** file-name.
|
|
*/
|
|
printf("Renaming %s to %s\n", name1, name2);
|
|
r = rename(name1, name2);
|
|
if (r < 0) {
|
|
_poserror("rename() failed");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
/* Verify that the first file-name no longer exists. */
|
|
file = fopen(name1, "r");
|
|
if (file != NULL) {
|
|
fclose(file);
|
|
_poserror("First name still exists");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
/* Verify that the second file-name exists now. */
|
|
file = fopen(name2, "r");
|
|
if (file == NULL) {
|
|
_poserror("Cannot find second name");
|
|
return EXIT_FAILURE;
|
|
}
|
|
fclose(file);
|
|
|
|
printf("Success!\n");
|
|
|
|
/* Delete the second (temporary) name. */
|
|
printf("Removing %s\n", name2);
|
|
r = remove(name2);
|
|
if (r < 0) {
|
|
_poserror("remove() failed");
|
|
return EXIT_FAILURE;
|
|
}
|
|
|
|
printf("rename() passed the test.\n");
|
|
return EXIT_SUCCESS;
|
|
}
|
|
|
|
|