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/* Taken from the Li18nux base test suite. */
#define _XOPEN_SOURCE 500
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <wchar.h>
int
main (void)
{
FILE *fp;
const char *str = "abcdef";
wint_t ret, wc, ungetone = 0x00E4; /* 0x00E4 means `a umlaut'. */
char fname[] = "/tmp/tst-ungetwc1.out.XXXXXX";
int fd;
int result = 0;
puts ("This program runs on de_DE.UTF-8 locale.");
if (setlocale (LC_ALL, "de_DE.UTF-8") == NULL)
{
fprintf (stderr, "Err: Cannot run on the de_DE.UTF-8 locale");
exit (EXIT_FAILURE);
}
fd = mkstemp (fname);
if (fd == -1)
{
printf ("cannot open temp file: %m\n");
exit (EXIT_FAILURE);
}
/* Write some characters to `testfile'. */
if ((fp = fdopen (fd, "w")) == NULL)
{
fprintf (stderr, "Cannot open 'testfile'.");
exit (EXIT_FAILURE);
}
fputs (str, fp);
fclose (fp);
/* Open `testfile'. */
if ((fp = fopen (fname, "r")) == NULL)
{
fprintf (stderr, "Cannot open 'testfile'.");
exit (EXIT_FAILURE);
}
/* Unget a character. */
ret = ungetwc (ungetone, fp);
printf ("Unget a character (0x%04x)\n", (unsigned int) ungetone);
fflush (stdout);
if (ret == WEOF)
{
puts ("ungetwc() returns NULL.");
exit (EXIT_SUCCESS);
}
/* Reget a character. */
wc = getwc (fp);
printf ("Reget a character (0x%04x)\n", (unsigned int) wc);
fflush (stdout);
if (wc == ungetone)
{
puts ("The ungotten character is equal to the regotten character.");
fflush (stdout);
}
else
{
puts ("The ungotten character is not equal to the regotten character.");
printf ("ungotten one: %04x, regetone: %04x", ungetone, wc);
fflush (stdout);
result = 1;
}
fclose (fp);
unlink (fname);
return result;
}
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