1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/build/stlport/src/stdio_streambuf.cpp Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,239 @@
1.4 +/*
1.5 + * Copyright (c) 1999
1.6 + * Silicon Graphics Computer Systems, Inc.
1.7 + *
1.8 + * Copyright (c) 1999
1.9 + * Boris Fomitchev
1.10 + *
1.11 + * This material is provided "as is", with absolutely no warranty expressed
1.12 + * or implied. Any use is at your own risk.
1.13 + *
1.14 + * Permission to use or copy this software for any purpose is hereby granted
1.15 + * without fee, provided the above notices are retained on all copies.
1.16 + * Permission to modify the code and to distribute modified code is granted,
1.17 + * provided the above notices are retained, and a notice that the code was
1.18 + * modified is included with the above copyright notice.
1.19 + *
1.20 + */
1.21 +
1.22 +#include "stlport_prefix.h"
1.23 +#include "stdio_streambuf.h"
1.24 +
1.25 +#ifdef _STLP_UNIX
1.26 +# include <sys/types.h>
1.27 +# include <sys/stat.h>
1.28 +#endif
1.29 +
1.30 +#include <fstream>
1.31 +#include <limits>
1.32 +
1.33 +_STLP_BEGIN_NAMESPACE
1.34 +_STLP_MOVE_TO_PRIV_NAMESPACE
1.35 +
1.36 +// Compare with streamoff definition in stl/char_traits.h!
1.37 +
1.38 +#if defined (_STLP_USE_DEFAULT_FILE_OFFSET) || \
1.39 + (!defined(_LARGEFILE_SOURCE) && !defined(_LARGEFILE64_SOURCE))
1.40 +# if !defined (_STLP_MSVC) || (_STLP_MSVC < 1400) || defined(_STLP_WCE)
1.41 +# define FSEEK fseek
1.42 +# else
1.43 +# define FSEEK _fseeki64
1.44 +# endif
1.45 +# define FSETPOS fsetpos
1.46 +# define FGETPOS fgetpos
1.47 +# define FPOS_T fpos_t
1.48 +#else
1.49 +# define FSEEK fseeko64
1.50 +# define FSETPOS fsetpos64
1.51 +# define FGETPOS fgetpos64
1.52 +# define FPOS_T fpos64_t
1.53 +#endif
1.54 +
1.55 +//----------------------------------------------------------------------
1.56 +// Class stdio_streambuf_base
1.57 +
1.58 +stdio_streambuf_base::stdio_streambuf_base(FILE* file)
1.59 + : /* _STLP_STD::FILE_basic_streambuf(file, 0), */
1.60 + _M_file(file)
1.61 +{}
1.62 +
1.63 +stdio_streambuf_base::~stdio_streambuf_base() {
1.64 + _STLP_VENDOR_CSTD::fflush(_M_file);
1.65 +}
1.66 +
1.67 +_STLP_STD::streambuf* stdio_streambuf_base::setbuf(char* s, streamsize n) {
1.68 +#ifdef _STLP_WCE
1.69 + // no buffering in windows ce .NET
1.70 +#else
1.71 + size_t __n_size_t = (sizeof(streamsize) > sizeof(size_t)) ? __STATIC_CAST(size_t, (min)(__STATIC_CAST(streamsize, (numeric_limits<size_t>::max)()), n))
1.72 + : __STATIC_CAST(size_t, n);
1.73 + _STLP_VENDOR_CSTD::setvbuf(_M_file, s, (s == 0 && n == 0) ? _IONBF : _IOFBF, __n_size_t);
1.74 +#endif
1.75 + return this;
1.76 +}
1.77 +
1.78 +stdio_streambuf_base::pos_type
1.79 +stdio_streambuf_base::seekoff(off_type off, ios_base::seekdir dir,
1.80 + ios_base::openmode /* mode */) {
1.81 + int whence;
1.82 + switch (dir) {
1.83 + case ios_base::beg:
1.84 + whence = SEEK_SET;
1.85 + break;
1.86 + case ios_base::cur:
1.87 + whence = SEEK_CUR;
1.88 + break;
1.89 + case ios_base::end:
1.90 + whence = SEEK_END;
1.91 + break;
1.92 + default:
1.93 + return pos_type(-1);
1.94 + }
1.95 +
1.96 + if (off <= numeric_limits<off_type>::max() && FSEEK(_M_file, off, whence) == 0) {
1.97 + FPOS_T pos;
1.98 + FGETPOS(_M_file, &pos);
1.99 + // added 21 june 00 mdb,rjf,wjs: glibc 2.2 changed fpos_t to be a struct instead
1.100 + // of a primitive type
1.101 +#if (defined (__GLIBC__) && ((__GLIBC__ > 2) || ((__GLIBC__ == 2) && (__GLIBC_MINOR__ >= 2))))
1.102 + return pos_type((streamoff)pos.__pos);
1.103 +#elif defined (__ISCPP__) || defined (__MVS__) || defined (__OS400__)
1.104 + return pos_type(pos.__fpos_elem[ 0 ]);
1.105 +#elif defined (__EMX__)
1.106 + return pos_type((streamoff)pos._pos);
1.107 +#else
1.108 + return pos_type(pos);
1.109 +#endif
1.110 + }
1.111 + else
1.112 + return pos_type(-1);
1.113 +}
1.114 +
1.115 +
1.116 +stdio_streambuf_base::pos_type
1.117 +stdio_streambuf_base::seekpos(pos_type pos, ios_base::openmode /* mode */) {
1.118 + // added 21 june 00 mdb,rjf,wjs: glibc 2.2 changed fpos_t to be a struct instead
1.119 + // of a primitive type
1.120 +#if (defined(__GLIBC__) && ( (__GLIBC__ > 2) || ( (__GLIBC__ == 2) && (__GLIBC_MINOR__ >= 2) ) ) )
1.121 + FPOS_T p;
1.122 + p.__pos = pos;
1.123 +# ifdef _STLP_USE_UCLIBC
1.124 +# ifdef __STDIO_MBSTATE
1.125 + memset( &(p.__mbstate), 0, sizeof(p.__mbstate) );
1.126 +# endif
1.127 +# ifdef __STDIO_WIDE
1.128 + p.mblen_pending = 0;
1.129 +# endif
1.130 +# else
1.131 + memset( &(p.__state), 0, sizeof(p.__state) );
1.132 +# endif
1.133 +#elif defined (__MVS__) || defined (__OS400__)
1.134 + FPOS_T p;
1.135 + p.__fpos_elem[0] = pos;
1.136 +#elif defined (__EMX__)
1.137 + FPOS_T p;
1.138 + p._pos = pos;
1.139 + memset( &(p._mbstate), 0, sizeof(p._mbstate) );
1.140 +#else
1.141 + FPOS_T p(pos);
1.142 +#endif
1.143 +
1.144 + return FSETPOS(_M_file, &p) == 0 ? pos : pos_type(-1);
1.145 +}
1.146 +
1.147 +int stdio_streambuf_base::sync() {
1.148 + return _STLP_VENDOR_CSTD::fflush(_M_file) == 0 ? 0 : -1;
1.149 +}
1.150 +
1.151 +//----------------------------------------------------------------------
1.152 +// Class stdio_istreambuf
1.153 +
1.154 +stdio_istreambuf::~stdio_istreambuf() {}
1.155 +
1.156 +streamsize stdio_istreambuf::showmanyc()
1.157 +{ return 0; }
1.158 +
1.159 +stdio_istreambuf::int_type stdio_istreambuf::underflow()
1.160 +{
1.161 +#ifdef _STLP_WCE
1.162 + int c = fgetc(_M_file);
1.163 +#else
1.164 + int c = getc(_M_file);
1.165 +#endif
1.166 + if (c != EOF) {
1.167 + _STLP_VENDOR_CSTD::ungetc(c, _M_file);
1.168 + return c;
1.169 + }
1.170 + else
1.171 + return traits_type::eof();
1.172 +}
1.173 +
1.174 +stdio_istreambuf::int_type stdio_istreambuf::uflow() {
1.175 +#ifdef _STLP_WCE
1.176 + int c = fgetc(_M_file);
1.177 +#else
1.178 + int c = getc(_M_file);
1.179 +#endif
1.180 + return c != EOF ? c : traits_type::eof();
1.181 +}
1.182 +
1.183 +stdio_istreambuf::int_type stdio_istreambuf::pbackfail(int_type c) {
1.184 + if (c != traits_type::eof()) {
1.185 + int result = _STLP_VENDOR_CSTD::ungetc(c, _M_file);
1.186 + return result != EOF ? result : traits_type::eof();
1.187 + }
1.188 + else{
1.189 + if (this->eback() < this->gptr()) {
1.190 + this->gbump(-1);
1.191 + return traits_type::not_eof(c);
1.192 + }
1.193 + else
1.194 + return traits_type::eof();
1.195 + }
1.196 +}
1.197 +
1.198 +//----------------------------------------------------------------------
1.199 +// Class stdio_ostreambuf
1.200 +
1.201 +stdio_ostreambuf::~stdio_ostreambuf() {}
1.202 +
1.203 +streamsize stdio_ostreambuf::showmanyc()
1.204 +{ return -1; }
1.205 +
1.206 +stdio_ostreambuf::int_type stdio_ostreambuf::overflow(int_type c) {
1.207 + // Write the existing buffer, without writing any additional character.
1.208 + if (c == traits_type::eof()) {
1.209 + // Do we have a buffer to write?
1.210 + ptrdiff_t unwritten = this->pptr() - this->pbase();
1.211 + if (unwritten != 0) {
1.212 + _STLP_VENDOR_CSTD::fflush(_M_file);
1.213 + // Test if the write succeeded.
1.214 + if (this->pptr() - this->pbase() < unwritten)
1.215 + return traits_type::not_eof(c);
1.216 + else
1.217 + return traits_type::eof();
1.218 + }
1.219 +
1.220 + // We always succeed if we don't have to do anything.
1.221 + else
1.222 + return traits_type::not_eof(c);
1.223 + }
1.224 +
1.225 + // Write the character c, and whatever else might be in the buffer.
1.226 + else {
1.227 +#ifdef _STLP_WCE
1.228 + int result = fputc(c, _M_file);
1.229 +#else
1.230 + int result = putc(c, _M_file);
1.231 +#endif
1.232 + return result != EOF ? result : traits_type::eof();
1.233 + }
1.234 +}
1.235 +
1.236 +_STLP_MOVE_TO_STD_NAMESPACE
1.237 +_STLP_END_NAMESPACE
1.238 +
1.239 +// Local Variables:
1.240 +// mode:C++
1.241 +// End:
1.242 +
