/* $Id: tif_unix.c,v 1.23 2012-06-01 21:40:59 fwarmerdam Exp $ */

/*

 * Copyright (c) 1988-1997 Sam Leffler

 * Copyright (c) 1991-1997 Silicon Graphics, Inc.

 *

 * Permission to use, copy, modify, distribute, and sell this software and

 * its documentation for any purpose is hereby granted without fee, provided

 * that (i) the above copyright notices and this permission notice appear in

 * all copies of the software and related documentation, and (ii) the names of

 * Sam Leffler and Silicon Graphics may not be used in any advertising or

 * publicity relating to the software without the specific, prior written

 * permission of Sam Leffler and Silicon Graphics.

 *

 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,

 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY

 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.

 *

 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR

 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,

 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,

 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF

 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE

 * OF THIS SOFTWARE.

 */

/*

 * TIFF Library UNIX-specific Routines. These are should also work with the

 * Windows Common RunTime Library.

 */

#include "tif_config.h"

#ifdef HAVE_SYS_TYPES_H

# include <sys types.h=""></sys>

#endif

#include <errno.h></errno.h>

#include <stdarg.h></stdarg.h>

#include <stdlib.h></stdlib.h>

#include <sys stat.h=""></sys>

#ifdef HAVE_UNISTD_H

# include <unistd.h></unistd.h>

#endif

#ifdef HAVE_FCNTL_H

# include <fcntl.h></fcntl.h>

#endif

#ifdef HAVE_IO_H

# include <io.h></io.h>

#endif

#include "tiffiop.h"

static tmsize_t

_tiffReadProc(thandle_t fd, void* buf, tmsize_t size)

{

	size_t size_io = (size_t) size;

	if ((tmsize_t) size_io != size)

	{

		errno=EINVAL;

		return (tmsize_t) -1;

	}

	return ((tmsize_t) read((int) fd, buf, size_io));

}

static tmsize_t

_tiffWriteProc(thandle_t fd, void* buf, tmsize_t size)

{

	size_t size_io = (size_t) size;

	if ((tmsize_t) size_io != size)

	{

		errno=EINVAL;

		return (tmsize_t) -1;

	}

	return ((tmsize_t) write((int) fd, buf, size_io));

}

static uint64

_tiffSeekProc(thandle_t fd, uint64 off, int whence)

{

	off_t off_io = (off_t) off;

	if ((uint64) off_io != off)

	{

		errno=EINVAL;

		return (uint64) -1; /* this is really gross */

	}

	return((uint64)lseek((int)fd,off_io,whence));

}

static int

_tiffCloseProc(thandle_t fd)

{

	return(close((int)fd));

}

static int

_tiffDummyCloseProc(thandle_t fd)

{

	return 0;

}

static uint64

_tiffSizeProc(thandle_t fd)

{

	struct stat sb;

	if (fstat((int)fd,&sb)<0)

		return(0);

	else

		return((uint64)sb.st_size);

}

#ifdef HAVE_MMAP

#include <sys mman.h=""></sys>

static int

_tiffMapProc(thandle_t fd, void** pbase, toff_t* psize)

{

	uint64 size64 = _tiffSizeProc(fd);

	tmsize_t sizem = (tmsize_t)size64;

	if ((uint64)sizem==size64) {

		*pbase = (void*)

		    mmap(0, (size_t)sizem, PROT_READ, MAP_SHARED, (int) fd, 0);

		if (*pbase != (void*) -1) {

			*psize = (tmsize_t)sizem;

			return (1);

		}

	}

	return (0);

}

static void

_tiffUnmapProc(thandle_t fd, void* base, toff_t size)

{

	(void) fd;

	(void) munmap(base, (off_t) size);

}

#else /* !HAVE_MMAP */

static int

_tiffMapProc(thandle_t fd, void** pbase, toff_t* psize)

{

	(void) fd; (void) pbase; (void) psize;

	return (0);

}

static void

_tiffUnmapProc(thandle_t fd, void* base, toff_t size)

{

	(void) fd; (void) base; (void) size;

}

#endif /* !HAVE_MMAP */

/*

 * Open a TIFF file descriptor for read/writing.

 */

TIFF*

TIFFFdOpen(int fd, const char* name, const char* mode)

{

	TIFF* tif;

	tif = TIFFClientOpen(name, mode,

	    (thandle_t) fd,

	    _tiffReadProc, _tiffWriteProc,

	    _tiffSeekProc, _tiffCloseProc, _tiffSizeProc,

	    _tiffMapProc, _tiffUnmapProc);

	if (tif)

		tif->tif_fd = fd;

	return (tif);

}

/*

 * Open a TIFF file descriptor for read/writing - but without close proc.

 */

TIFF*

TIFFFdOpenNoCloseProc(int fd, const char* name, const char* mode)

{

	TIFF* tif;

	tif = TIFFClientOpen(name, mode,

	    (thandle_t) fd,

	    _tiffReadProc, _tiffWriteProc,

	    _tiffSeekProc, _tiffDummyCloseProc, _tiffSizeProc,

	    _tiffMapProc, _tiffUnmapProc);

	if (tif)

		tif->tif_fd = fd;

	return (tif);

}

/*

 * Open a TIFF file for read/writing.

 */

TIFF*

TIFFOpen(const char* name, const char* mode)

{

	static const char module[] = "TIFFOpen";

	int m, fd;

	TIFF* tif;

	m = _TIFFgetMode(mode, module);

	if (m == -1)

		return ((TIFF*)0);

/* for cygwin and mingw */

#ifdef O_BINARY

	m |= O_BINARY;

#endif

	fd = open(name, m, 0666);

	if (fd < 0) {

		if (errno > 0 && strerror(errno) != NULL ) {

			TIFFErrorExt(0, module, "%s: %s", name, strerror(errno) );

		} else {

			TIFFErrorExt(0, module, "%s: Cannot open", name);

		}

		return ((TIFF *)0);

	}

	tif = TIFFFdOpen((int)fd, name, mode);

	if(!tif)

		close(fd);

	return tif;

}

#ifdef __WIN32__

#include <windows.h></windows.h>

/*

 * Open a TIFF file with a Unicode filename, for read/writing.

 */

TIFF*

TIFFOpenW(const wchar_t* name, const char* mode)

{

	static const char module[] = "TIFFOpenW";

	int m, fd;

	int mbsize;

	char *mbname;

	TIFF* tif;

	m = _TIFFgetMode(mode, module);

	if (m == -1)

		return ((TIFF*)0);

/* for cygwin and mingw */

#ifdef O_BINARY

	m |= O_BINARY;

#endif

	fd = _wopen(name, m, 0666);

	if (fd < 0) {

		TIFFErrorExt(0, module, "%s: Cannot open", name);

		return ((TIFF *)0);

	}

	mbname = NULL;

	mbsize = WideCharToMultiByte(CP_ACP, 0, name, -1, NULL, 0, NULL, NULL);

	if (mbsize > 0) {

		mbname = _TIFFmalloc(mbsize);

		if (!mbname) {

			TIFFErrorExt(0, module,

			"Can't allocate space for filename conversion buffer");

			return ((TIFF*)0);

		}

		WideCharToMultiByte(CP_ACP, 0, name, -1, mbname, mbsize,

				    NULL, NULL);

	}

	tif = TIFFFdOpen((int)fd, (mbname != NULL) ? mbname : "<unknown>",</unknown>

			 mode);

	_TIFFfree(mbname);

	if(!tif)

		close(fd);

	return tif;

}

#endif

void*

_TIFFmalloc(tmsize_t s)

{

	return (malloc((size_t) s));

}

void

_TIFFfree(void* p)

{

	free(p);

}

void*

_TIFFrealloc(void* p, tmsize_t s)

{

	return (realloc(p, (size_t) s));

}

void

_TIFFmemset(void* p, int v, tmsize_t c)

{

	memset(p, v, (size_t) c);

}

void

_TIFFmemcpy(void* d, const void* s, tmsize_t c)

{

	memcpy(d, s, (size_t) c);

}

int

_TIFFmemcmp(const void* p1, const void* p2, tmsize_t c)

{

	return (memcmp(p1, p2, (size_t) c));

}

static void

unixWarningHandler(const char* module, const char* fmt, va_list ap)

{

	if (module != NULL)

		fprintf(stderr, "%s: ", module);

	fprintf(stderr, "Warning, ");

	vfprintf(stderr, fmt, ap);

	fprintf(stderr, ".\n");

}

TIFFErrorHandler _TIFFwarningHandler = unixWarningHandler;

static void

unixErrorHandler(const char* module, const char* fmt, va_list ap)

{

	if (module != NULL)

		fprintf(stderr, "%s: ", module);

	vfprintf(stderr, fmt, ap);

	fprintf(stderr, ".\n");

}

TIFFErrorHandler _TIFFerrorHandler = unixErrorHandler;

/* vim: set ts=8 sts=8 sw=8 noet: */

/*

 * Local Variables:

 * mode: c

 * c-basic-offset: 8

 * fill-column: 78

 * End:

 */