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#include <errno.h>
#include <error.h>
#include <fcntl.h>
#include <locale.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <wchar.h>
int
main (int argc, char *argv[])
{
int a = 3;
int fd;
char name[] = "/tmp/wprintf.out.XXXXXX";
FILE *fp;
char buf[100];
size_t len;
int res = 0;
fd = mkstemp (name);
if (fd == -1)
error (EXIT_FAILURE, errno, "cannot open temporary file");
unlink (name);
setlocale (LC_ALL, "en_US.UTF-8");
fp = fdopen (dup (fd), "w");
if (fp == NULL)
error (EXIT_FAILURE, errno, "fdopen(,\"w\")");
fwprintf (fp, L"test start");
fwprintf (fp, L" int %d\n", a);
/* String with precision. */
fwprintf (fp, L"1[%6.3s]\n", argv[1]);
fclose (fp);
fp = fdopen (dup (fd), "a");
if (fp == NULL)
error (EXIT_FAILURE, errno, "fdopen(,\"a\")");
setvbuf (fp, NULL, _IONBF, 0);
/* fwprintf to unbuffered stream. */
fwprintf (fp, L"hello.\n");
fclose (fp);
/* Now read it back in. This time using multibyte functions. */
lseek (fd, SEEK_SET, 0);
fp = fdopen (fd, "r");
if (fp == NULL)
error (EXIT_FAILURE, errno, "fdopen(,\"r\")");
if (fgets (buf, sizeof buf, fp) != buf)
error (EXIT_FAILURE, errno, "first fgets");
len = strlen (buf);
if (buf[len - 1] == '\n')
--len;
else
{
puts ("newline missing after first line");
res = 1;
}
printf ("1st line: \"%.*s\" -> %s\n", (int) len, buf,
strncmp (buf, "test start int 3", len) == 0 ? "OK" : "FAIL");
res |= strncmp (buf, "test start int 3", len) != 0;
if (fgets (buf, sizeof buf, fp) != buf)
error (EXIT_FAILURE, errno, "second fgets");
len = strlen (buf);
if (buf[len - 1] == '\n')
--len;
else
{
puts ("newline missing after second line");
res = 1;
}
printf ("2nd line: \"%.*s\" -> %s\n", (int) len, buf,
strncmp (buf, "1[ Som]", len) == 0 ? "OK" : "FAIL");
res |= strncmp (buf, "1[ Som]", len) != 0;
if (fgets (buf, sizeof buf, fp) != buf)
error (EXIT_FAILURE, errno, "third fgets");
len = strlen (buf);
if (buf[len - 1] == '\n')
--len;
else
{
puts ("newline missing after third line");
res = 1;
}
printf ("3rd line: \"%.*s\" -> %s\n", (int) len, buf,
strncmp (buf, "hello.", len) == 0 ? "OK" : "FAIL");
res |= strncmp (buf, "hello.", len) != 0;
return res;
}
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