85 lines
1.7 KiB
C
85 lines
1.7 KiB
C
/* Taken from the Li18nux base test suite. */
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#define _XOPEN_SOURCE 500
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#include <locale.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <wchar.h>
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static int
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do_test (void)
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{
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FILE *fp;
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const char *str = "abcdef";
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wint_t ret, wc;
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char fname[] = "/tmp/tst-ungetwc2.out.XXXXXX";
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int fd;
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long int pos;
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int result = 0;
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puts ("This program runs on de_DE.UTF-8 locale.");
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if (setlocale (LC_ALL, "de_DE.UTF-8") == NULL)
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{
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fprintf (stderr, "Err: Cannot run on the de_DE.UTF-8 locale\n");
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exit (EXIT_FAILURE);
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}
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/* Write some characters to `testfile'. */
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fd = mkstemp (fname);
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if (fd == -1)
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{
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printf ("cannot open temp file: %m\n");
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exit (EXIT_FAILURE);
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}
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if ((fp = fdopen (fd, "w")) == NULL)
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{
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fprintf (stderr, "Cannot open 'testfile'.\n");
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exit (EXIT_FAILURE);
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}
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fputs (str, fp);
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fclose (fp);
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/* Open `testfile'. */
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if ((fp = fopen (fname, "r")) == NULL)
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{
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fprintf (stderr, "Cannot open 'testfile'.");
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exit (EXIT_FAILURE);
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}
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/* Get a character. */
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wc = getwc (fp);
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pos = ftell (fp);
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printf ("After get a character: %ld\n", pos);
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if (pos != 1)
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result = 1;
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/* Unget a character. */
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ret = ungetwc (wc, fp);
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if (ret == WEOF)
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{
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fprintf (stderr, "ungetwc() returns NULL.");
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exit (EXIT_FAILURE);
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}
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pos = ftell (fp);
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printf ("After unget a character: %ld\n", pos);
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if (pos != 0)
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result = 1;
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/* Reget a character. */
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wc = getwc (fp);
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pos = ftell (fp);
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printf ("After reget a character: %ld\n", pos);
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if (pos != 1)
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result = 1;
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fclose (fp);
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unlink (fname);
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return result;
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}
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#define TEST_FUNCTION do_test ()
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#include "../test-skeleton.c"
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