/* $Id: tif_unix.c,v 1.12.2.1 2010-06-08 18:50:43 bfriesen 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>

#endif

#include <stdarg.h>

#include <stdlib.h>

#include <sys/stat.h>

#ifdef HAVE_UNISTD_H

# include <unistd.h>

#endif

#ifdef HAVE_FCNTL_H

# include <fcntl.h>

#endif

#ifdef HAVE_IO_H

# include <io.h>

#endif

#include "tiffiop.h"

static tsize_t

_tiffReadProc(thandle_t fd, tdata_t buf, tsize_t size)

{

	return ((tsize_t) read((int) fd, buf, (size_t) size));

}

static tsize_t

_tiffWriteProc(thandle_t fd, tdata_t buf, tsize_t size)

{

	return ((tsize_t) write((int) fd, buf, (size_t) size));

}

static toff_t

_tiffSeekProc(thandle_t fd, toff_t off, int whence)

{

	return ((toff_t) lseek((int) fd, (off_t) off, whence));

}

static int

_tiffCloseProc(thandle_t fd)

{

	return (close((int) fd));

}

static toff_t

_tiffSizeProc(thandle_t fd)

{

#ifdef _AM29K

	long fsize;

	return ((fsize = lseek((int) fd, 0, SEEK_END)) < 0 ? 0 : fsize);

#else

	struct stat sb;

	return (toff_t) (fstat((int) fd, &sb) < 0 ? 0 : sb.st_size);

#endif

}

#ifdef HAVE_MMAP

#include <sys/mman.h>

static int

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

{

	toff_t size = _tiffSizeProc(fd);

	if (size != (toff_t) -1) {

		*pbase = (tdata_t)

		    mmap(0, size, PROT_READ, MAP_SHARED, (int) fd, 0);

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

			*psize = size;

			return (1);

		}

	}

	return (0);

}

static void

_tiffUnmapProc(thandle_t fd, tdata_t base, toff_t size)

{

	(void) fd;

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

}

#else /* !HAVE_MMAP */

static int

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

{

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

	return (0);

}

static void

_tiffUnmapProc(thandle_t fd, tdata_t 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 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        

#ifdef _AM29K

	fd = open(name, m);

#else

	fd = open(name, m, 0666);

#endif

	if (fd < 0) {

		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>

/*

 * 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>",

			 mode);

	_TIFFfree(mbname);

	if(!tif)

		close(fd);

	return tif;

}

#endif

void*

_TIFFmalloc(tsize_t s)

{

	return (malloc((size_t) s));

}

void

_TIFFfree(tdata_t p)

{

	free(p);

}

void*

_TIFFrealloc(tdata_t p, tsize_t s)

{

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

}

void

_TIFFmemset(tdata_t p, int v, tsize_t c)

{

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

}

void

_TIFFmemcpy(tdata_t d, const tdata_t s, tsize_t c)

{

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

}

int

_TIFFmemcmp(const tdata_t p1, const tdata_t p2, tsize_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;

/*

 * Local Variables:

 * mode: c

 * c-basic-offset: 8

 * fill-column: 78

 * End:

 */