From d479dd1aab1c1cb907932c6595b0ef33523fc797 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?J=C3=B6rg=20Frings-F=C3=BCrst?= Date: Fri, 6 Nov 2015 07:14:47 +0100 Subject: Imported Upstream version 1.8.3 --- tiff/libtiff/tif_stream.cxx | 429 -------------------------------------------- 1 file changed, 429 deletions(-) delete mode 100755 tiff/libtiff/tif_stream.cxx (limited to 'tiff/libtiff/tif_stream.cxx') diff --git a/tiff/libtiff/tif_stream.cxx b/tiff/libtiff/tif_stream.cxx deleted file mode 100755 index da467cb..0000000 --- a/tiff/libtiff/tif_stream.cxx +++ /dev/null @@ -1,429 +0,0 @@ -/* $Id: tif_stream.cxx,v 1.12 2014-12-26 16:01:05 bfriesen Exp $ */ - -/* - * Copyright (c) 1988-1996 Sam Leffler - * Copyright (c) 1991-1996 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. - */ -#include "tiffiop.h" -#include - -#ifndef __VMS -using namespace std; -#endif - -/* - ISO C++ uses a 'std::streamsize' type to define counts. This makes - it similar to, (but perhaps not the same as) size_t. - - The std::ios::pos_type is used to represent stream positions as used - by tellg(), tellp(), seekg(), and seekp(). This makes it similar to - (but perhaps not the same as) 'off_t'. The std::ios::streampos type - is used for character streams, but is documented to not be an - integral type anymore, so it should *not* be assigned to an integral - type. - - The std::ios::off_type is used to specify relative offsets needed by - the variants of seekg() and seekp() which accept a relative offset - argument. - - Useful prototype knowledge: - - Obtain read position - ios::pos_type basic_istream::tellg() - - Set read position - basic_istream& basic_istream::seekg(ios::pos_type) - basic_istream& basic_istream::seekg(ios::off_type, ios_base::seekdir) - - Read data - basic_istream& istream::read(char *str, streamsize count) - - Number of characters read in last unformatted read - streamsize istream::gcount(); - - Obtain write position - ios::pos_type basic_ostream::tellp() - - Set write position - basic_ostream& basic_ostream::seekp(ios::pos_type) - basic_ostream& basic_ostream::seekp(ios::off_type, ios_base::seekdir) - - Write data - basic_ostream& ostream::write(const char *str, streamsize count) -*/ - -struct tiffis_data; -struct tiffos_data; - -extern "C" { - - static tmsize_t _tiffosReadProc(thandle_t, void*, tmsize_t); - static tmsize_t _tiffisReadProc(thandle_t fd, void* buf, tmsize_t size); - static tmsize_t _tiffosWriteProc(thandle_t fd, void* buf, tmsize_t size); - static tmsize_t _tiffisWriteProc(thandle_t, void*, tmsize_t); - static uint64 _tiffosSeekProc(thandle_t fd, uint64 off, int whence); - static uint64 _tiffisSeekProc(thandle_t fd, uint64 off, int whence); - static uint64 _tiffosSizeProc(thandle_t fd); - static uint64 _tiffisSizeProc(thandle_t fd); - static int _tiffosCloseProc(thandle_t fd); - static int _tiffisCloseProc(thandle_t fd); - static int _tiffDummyMapProc(thandle_t , void** base, toff_t* size ); - static void _tiffDummyUnmapProc(thandle_t , void* base, toff_t size ); - static TIFF* _tiffStreamOpen(const char* name, const char* mode, void *fd); - -struct tiffis_data -{ - istream *stream; - ios::pos_type start_pos; -}; - -struct tiffos_data -{ - ostream *stream; - ios::pos_type start_pos; -}; - -static tmsize_t -_tiffosReadProc(thandle_t, void*, tmsize_t) -{ - return 0; -} - -static tmsize_t -_tiffisReadProc(thandle_t fd, void* buf, tmsize_t size) -{ - tiffis_data *data = reinterpret_cast(fd); - - // Verify that type does not overflow. - streamsize request_size = size; - if (static_cast(request_size) != size) - return static_cast(-1); - - data->stream->read((char *) buf, request_size); - - return static_cast(data->stream->gcount()); -} - -static tmsize_t -_tiffosWriteProc(thandle_t fd, void* buf, tmsize_t size) -{ - tiffos_data *data = reinterpret_cast(fd); - ostream *os = data->stream; - ios::pos_type pos = os->tellp(); - - // Verify that type does not overflow. - streamsize request_size = size; - if (static_cast(request_size) != size) - return static_cast(-1); - - os->write(reinterpret_cast(buf), request_size); - - return static_cast(os->tellp() - pos); -} - -static tmsize_t -_tiffisWriteProc(thandle_t, void*, tmsize_t) -{ - return 0; -} - -static uint64 -_tiffosSeekProc(thandle_t fd, uint64 off, int whence) -{ - tiffos_data *data = reinterpret_cast(fd); - ostream *os = data->stream; - - // if the stream has already failed, don't do anything - if( os->fail() ) - return static_cast(-1); - - switch(whence) { - case SEEK_SET: - { - // Compute 64-bit offset - uint64 new_offset = static_cast(data->start_pos) + off; - - // Verify that value does not overflow - ios::off_type offset = static_cast(new_offset); - if (static_cast(offset) != new_offset) - return static_cast(-1); - - os->seekp(offset, ios::beg); - break; - } - case SEEK_CUR: - { - // Verify that value does not overflow - ios::off_type offset = static_cast(off); - if (static_cast(offset) != off) - return static_cast(-1); - - os->seekp(offset, ios::cur); - break; - } - case SEEK_END: - { - // Verify that value does not overflow - ios::off_type offset = static_cast(off); - if (static_cast(offset) != off) - return static_cast(-1); - - os->seekp(offset, ios::end); - break; - } - } - - // Attempt to workaround problems with seeking past the end of the - // stream. ofstream doesn't have a problem with this but - // ostrstream/ostringstream does. In that situation, add intermediate - // '\0' characters. - if( os->fail() ) { -#ifdef __VMS - int old_state; -#else - ios::iostate old_state; -#endif - ios::pos_type origin; - - old_state = os->rdstate(); - // reset the fail bit or else tellp() won't work below - os->clear(os->rdstate() & ~ios::failbit); - switch( whence ) { - case SEEK_SET: - default: - origin = data->start_pos; - break; - case SEEK_CUR: - origin = os->tellp(); - break; - case SEEK_END: - os->seekp(0, ios::end); - origin = os->tellp(); - break; - } - // restore original stream state - os->clear(old_state); - - // only do something if desired seek position is valid - if( (static_cast(origin) + off) > static_cast(data->start_pos) ) { - uint64 num_fill; - - // clear the fail bit - os->clear(os->rdstate() & ~ios::failbit); - - // extend the stream to the expected size - os->seekp(0, ios::end); - num_fill = (static_cast(origin)) + off - os->tellp(); - for( uint64 i = 0; i < num_fill; i++ ) - os->put('\0'); - - // retry the seek - os->seekp(static_cast(static_cast(origin) + off), ios::beg); - } - } - - return static_cast(os->tellp()); -} - -static uint64 -_tiffisSeekProc(thandle_t fd, uint64 off, int whence) -{ - tiffis_data *data = reinterpret_cast(fd); - - switch(whence) { - case SEEK_SET: - { - // Compute 64-bit offset - uint64 new_offset = static_cast(data->start_pos) + off; - - // Verify that value does not overflow - ios::off_type offset = static_cast(new_offset); - if (static_cast(offset) != new_offset) - return static_cast(-1); - - data->stream->seekg(offset, ios::beg); - break; - } - case SEEK_CUR: - { - // Verify that value does not overflow - ios::off_type offset = static_cast(off); - if (static_cast(offset) != off) - return static_cast(-1); - - data->stream->seekg(offset, ios::cur); - break; - } - case SEEK_END: - { - // Verify that value does not overflow - ios::off_type offset = static_cast(off); - if (static_cast(offset) != off) - return static_cast(-1); - - data->stream->seekg(offset, ios::end); - break; - } - } - - return (uint64) (data->stream->tellg() - data->start_pos); -} - -static uint64 -_tiffosSizeProc(thandle_t fd) -{ - tiffos_data *data = reinterpret_cast(fd); - ostream *os = data->stream; - ios::pos_type pos = os->tellp(); - ios::pos_type len; - - os->seekp(0, ios::end); - len = os->tellp(); - os->seekp(pos); - - return (uint64) len; -} - -static uint64 -_tiffisSizeProc(thandle_t fd) -{ - tiffis_data *data = reinterpret_cast(fd); - ios::pos_type pos = data->stream->tellg(); - ios::pos_type len; - - data->stream->seekg(0, ios::end); - len = data->stream->tellg(); - data->stream->seekg(pos); - - return (uint64) len; -} - -static int -_tiffosCloseProc(thandle_t fd) -{ - // Our stream was not allocated by us, so it shouldn't be closed by us. - delete reinterpret_cast(fd); - return 0; -} - -static int -_tiffisCloseProc(thandle_t fd) -{ - // Our stream was not allocated by us, so it shouldn't be closed by us. - delete reinterpret_cast(fd); - return 0; -} - -static int -_tiffDummyMapProc(thandle_t , void** base, toff_t* size ) -{ - (void) base; - (void) size; - return (0); -} - -static void -_tiffDummyUnmapProc(thandle_t , void* base, toff_t size ) -{ - (void) base; - (void) size; -} - -/* - * Open a TIFF file descriptor for read/writing. - */ -static TIFF* -_tiffStreamOpen(const char* name, const char* mode, void *fd) -{ - TIFF* tif; - - if( strchr(mode, 'w') ) { - tiffos_data *data = new tiffos_data; - data->stream = reinterpret_cast(fd); - data->start_pos = data->stream->tellp(); - - // Open for writing. - tif = TIFFClientOpen(name, mode, - reinterpret_cast(data), - _tiffosReadProc, - _tiffosWriteProc, - _tiffosSeekProc, - _tiffosCloseProc, - _tiffosSizeProc, - _tiffDummyMapProc, - _tiffDummyUnmapProc); - } else { - tiffis_data *data = new tiffis_data; - data->stream = reinterpret_cast(fd); - data->start_pos = data->stream->tellg(); - // Open for reading. - tif = TIFFClientOpen(name, mode, - reinterpret_cast(data), - _tiffisReadProc, - _tiffisWriteProc, - _tiffisSeekProc, - _tiffisCloseProc, - _tiffisSizeProc, - _tiffDummyMapProc, - _tiffDummyUnmapProc); - } - - return (tif); -} - -} /* extern "C" */ - -TIFF* -TIFFStreamOpen(const char* name, ostream *os) -{ - // If os is either a ostrstream or ostringstream, and has no data - // written to it yet, then tellp() will return -1 which will break us. - // We workaround this by writing out a dummy character and - // then seek back to the beginning. - if( !os->fail() && static_cast(os->tellp()) < 0 ) { - *os << '\0'; - os->seekp(0); - } - - // NB: We don't support mapped files with streams so add 'm' - return _tiffStreamOpen(name, "wm", os); -} - -TIFF* -TIFFStreamOpen(const char* name, istream *is) -{ - // NB: We don't support mapped files with streams so add 'm' - return _tiffStreamOpen(name, "rm", is); -} - -/* vim: set ts=8 sts=8 sw=8 noet: */ -/* - Local Variables: - mode: c - indent-tabs-mode: true - c-basic-offset: 8 - End: -*/ -- cgit v1.2.3