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glibc/libio/bug-ungetwc2.c
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#define _XOPEN_SOURCE 500 | |
#include <errno.h> | |
#include <error.h> | |
#include <stdio.h> | |
#include <stdlib.h> | |
#include <locale.h> | |
#include <wchar.h> | |
const char test_locale[] = "de_DE.UTF-8"; | |
const wchar_t write_wchars[] = {L'A', 0x00C4, L'B', L'\0'}; | |
/* `0x00C4' is A with diaeresis. */ | |
size_t last_pos = 2; /* Which character is last one to read. */ | |
wint_t unget_wchar = L'C'; /* Ungotten ide characters. */ | |
char *fname; | |
static int do_test (void); | |
#define TEST_FUNCTION do_test () | |
#include "../test-skeleton.c" | |
static int | |
do_test (void) | |
{ | |
size_t i; | |
wint_t wc; | |
FILE *fp; | |
int fd; | |
fname = (char *) malloc (strlen (test_dir) + sizeof "/bug-ungetwc2.XXXXXX"); | |
if (fname == NULL) | |
{ | |
puts ("no memory"); | |
return 1; | |
} | |
strcpy (stpcpy (fname, test_dir), "/bug-ungetwc2.XXXXXX"); | |
fd = mkstemp (fname); | |
if (fd == -1) | |
{ | |
printf ("cannot open temporary file: %m\n"); | |
return 1; | |
} | |
add_temp_file (fname); | |
printf ("\nNote: This program runs on %s locale.\n\n", test_locale); | |
if (setlocale (LC_ALL, test_locale) == NULL) | |
{ | |
fprintf (stderr, "Cannot use `%s' locale.\n", test_locale); | |
exit (EXIT_FAILURE); | |
} | |
/* Output to the file. */ | |
if ((fp = fdopen (fd, "w")) == NULL) | |
{ | |
setlocale (LC_ALL, "C"); | |
fprintf (stderr, "Cannot make `%s' file.\n", fname); | |
exit (EXIT_FAILURE); | |
} | |
fprintf (fp, "%ls", write_wchars); | |
fclose (fp); | |
/* Read from the file. */ | |
fp = fopen (fname, "r"); | |
if (fp == NULL) | |
{ | |
setlocale (LC_ALL, "C"); | |
error (EXIT_FAILURE, errno, "cannot open %s", fname); | |
} | |
printf ("%s is opened.\n", fname); | |
for (i = 0; i < last_pos; i++) | |
{ | |
wc = getwc (fp); | |
printf ("> `%lc' is gotten.\n", wc); | |
} | |
/* Unget a wide character. */ | |
ungetwc (unget_wchar, fp); | |
printf ("< `%lc' is ungotten.\n", unget_wchar); | |
/* Reget the wide character. */ | |
wc = getwc (fp); | |
printf ("> `%lc' is regotten.\n", wc); | |
fflush (stdout); | |
fclose (fp); | |
return 0; | |
} |