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/*
* <stdio.h> wrapper functions.
*
* Authors:
* Jonathan Pryor (jonpryor@vt.edu)
*
* Copyright (C) 2004-2006 Jonathan Pryor
*/

#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>

#include "map.h"
#include "mph.h"

G_BEGIN_DECLS

#ifndef HOST_WIN32
gint32
Mono_Posix_Syscall_L_ctermid (void)
{
return L_ctermid;
}

gint32
Mono_Posix_Syscall_L_cuserid (void)
{
#ifdef __APPLE__
return -1;
#else
return L_cuserid;
#endif
}
#endif /* ndef HOST_WIN32 */

mph_size_t
Mono_Posix_Stdlib_fread (unsigned char *ptr, mph_size_t size, mph_size_t nmemb, void *stream)
{
mph_return_if_size_t_overflow (size);
mph_return_if_size_t_overflow (nmemb);

return fread (ptr, (size_t) size, (size_t) nmemb, (FILE*) stream);
}

mph_size_t
Mono_Posix_Stdlib_fwrite (unsigned char *ptr, mph_size_t size, mph_size_t nmemb, void *stream)
{
mph_return_if_size_t_overflow (size);
mph_return_if_size_t_overflow (nmemb);

return fwrite (ptr, (size_t) size, (size_t) nmemb, (FILE*) stream);
}

#ifdef HAVE_VSNPRINTF
gint32
Mono_Posix_Stdlib_snprintf (char *s, mph_size_t n, char *format, ...);
gint32
Mono_Posix_Stdlib_snprintf (char *s, mph_size_t n, char *format, ...)
{
va_list ap;
gint32 r;
mph_return_if_size_t_overflow (n);

va_start (ap, format);
r = vsnprintf (s, (size_t) n, format, ap);
va_end (ap);

return r;
}
#endif /* def HAVE_VSNPRINTF */

gint32
Mono_Posix_Stdlib__IOFBF (void)
{
return _IOFBF;
}

gint32
Mono_Posix_Stdlib__IOLBF (void)
{
return _IOLBF;
}

gint32
Mono_Posix_Stdlib__IONBF (void)
{
return _IONBF;
}

gint32
Mono_Posix_Stdlib_BUFSIZ (void)
{
return BUFSIZ;
}

gint32
Mono_Posix_Stdlib_EOF (void)
{
return EOF;
}

gint32
Mono_Posix_Stdlib_FOPEN_MAX (void)
{
return FOPEN_MAX;
}

gint32
Mono_Posix_Stdlib_FILENAME_MAX (void)
{
return FILENAME_MAX;
}

gint32
Mono_Posix_Stdlib_L_tmpnam (void)
{
return L_tmpnam;
}

void*
Mono_Posix_Stdlib_stdin (void)
{
return stdin;
}

void*
Mono_Posix_Stdlib_stdout (void)
{
return stdout;
}

void*
Mono_Posix_Stdlib_stderr (void)
{
return stderr;
}

gint32
Mono_Posix_Stdlib_TMP_MAX (void)
{
return TMP_MAX;
}

gint32
Mono_Posix_Stdlib_setvbuf (void* stream, void *buf, int mode, mph_size_t size)
{
mph_return_if_size_t_overflow (size);
return setvbuf (stream, (char *) buf, mode, (size_t) size);
}

int
Mono_Posix_Stdlib_setbuf (void* stream, void* buf)
{
setbuf (stream, buf);
return 0;
}

gint32
Mono_Posix_Stdlib_fseek (void* stream, gint64 offset, int origin)
{
mph_return_if_long_overflow (offset);

return fseek (stream, offset, origin);
}

gint64
Mono_Posix_Stdlib_ftell (void* stream)
{
return ftell (stream);
}

void*
Mono_Posix_Stdlib_CreateFilePosition (void)
{
fpos_t* pos = malloc (sizeof(fpos_t));
return pos;
}

gint32
Mono_Posix_Stdlib_fgetpos (void* stream, void *pos)
{
return fgetpos (stream, (fpos_t*) pos);
}

gint32
Mono_Posix_Stdlib_fsetpos (void* stream, void *pos)
{
return fsetpos (stream, (fpos_t*) pos);
}

int
Mono_Posix_Stdlib_rewind (void* stream)
{
do {
rewind (stream);
} while (errno == EINTR);
mph_return_if_val_in_list5(errno, EAGAIN, EBADF, EFBIG, EINVAL, EIO);
mph_return_if_val_in_list5(errno, ENOSPC, ENXIO, EOVERFLOW, EPIPE, ESPIPE);
return 0;
}

int
Mono_Posix_Stdlib_clearerr (void* stream)
{
clearerr (((FILE*) stream));
return 0;
}

int
Mono_Posix_Stdlib_perror (const char* s, int err)
{
errno = err;
perror (s);
return 0;
}

#define MPH_FPOS_LENGTH (sizeof(fpos_t)*2)

int
Mono_Posix_Stdlib_DumpFilePosition (char *dest, void *pos, gint32 len)
{
char *destp;
unsigned char *posp, *pose;

if (dest == NULL)
return MPH_FPOS_LENGTH;

if (pos == NULL || len <= 0) {
errno = EINVAL;
return -1;
}

posp = (unsigned char*) pos;
pose = posp + sizeof(fpos_t);
destp = dest;

for ( ; posp < pose && len > 1; destp += 2, ++posp, len -= 2) {
sprintf (destp, "%02X", *posp);
}

if (len)
dest[MPH_FPOS_LENGTH] = '\0';

return destp - dest;
}

G_END_DECLS

/*
* vim: noexpandtab
*/
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