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Diffstat (limited to 'src/driver/fdstream.hpp')
| -rw-r--r-- | src/driver/fdstream.hpp | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/src/driver/fdstream.hpp b/src/driver/fdstream.hpp deleted file mode 100644 index ffcf5709..00000000 --- a/src/driver/fdstream.hpp +++ /dev/null @@ -1,215 +0,0 @@ -/* - * Copyright (c) 2003-2007, John Wiegley. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions are - * met: - * - * - Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * - * - Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * - * - Neither the name of New Artisans LLC nor the names of its - * contributors may be used to endorse or promote products derived from - * this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, - * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT - * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE - * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -/* The following code declares classes to read from and write to - * file descriptore or file handles. - * - * See - * http://www.josuttis.com/cppcode - * for details and the latest version. - * - * - open: - * - integrating BUFSIZ on some systems? - * - optimized reading of multiple characters - * - stream for reading AND writing - * - i18n - * - * (C) Copyright Nicolai M. Josuttis 2001. - * Permission to copy, use, modify, sell and distribute this software - * is granted provided this copyright notice appears in all copies. - * This software is provided "as is" without express or implied - * warranty, and with no claim as to its suitability for any purpose. - * - * Version: Jul 28, 2002 - * History: - * Jul 28, 2002: bugfix memcpy() => memmove() - * fdinbuf::underflow(): cast for return statements - * Aug 05, 2001: first public version - */ -#ifndef BOOST_FDSTREAM_HPP -#define BOOST_FDSTREAM_HPP - -#include <istream> -#include <ostream> -#include <streambuf> -// for EOF: -#include <cstdio> -// for memmove(): -#include <cstring> - - -// low-level read and write functions -#ifdef _MSC_VER -# include <io.h> -#else -# include <unistd.h> -//extern "C" { -// int write (int fd, const char* buf, int num); -// int read (int fd, char* buf, int num); -//} -#endif - - -// BEGIN namespace BOOST -namespace boost { - - -/************************************************************ - * fdostream - * - a stream that writes on a file descriptor - ************************************************************/ - - -class fdoutbuf : public std::streambuf { - protected: - int fd; // file descriptor - public: - // constructor - fdoutbuf (int _fd) : fd(_fd) { - } - protected: - // write one character - virtual int_type overflow (int_type c) { - if (c != EOF) { - char z = c; - if (write (fd, &z, 1) != 1) { - return EOF; - } - } - return c; - } - // write multiple characters - virtual - std::streamsize xsputn (const char* s, - std::streamsize num) { - return write(fd,s,num); - } -}; - -class fdostream : public std::ostream { - protected: - fdoutbuf buf; - public: - fdostream (int fd) : std::ostream(0), buf(fd) { - rdbuf(&buf); - } -}; - - -/************************************************************ - * fdistream - * - a stream that reads on a file descriptor - ************************************************************/ - -class fdinbuf : public std::streambuf { - protected: - int fd; // file descriptor - protected: - /* data buffer: - * - at most, pbSize characters in putback area plus - * - at most, bufSize characters in ordinary read buffer - */ - static const int pbSize = 4; // size of putback area - static const int bufSize = 1024; // size of the data buffer - char buffer[bufSize+pbSize]; // data buffer - - public: - /* constructor - * - initialize file descriptor - * - initialize empty data buffer - * - no putback area - * => force underflow() - */ - fdinbuf (int _fd) : fd(_fd) { - setg (buffer+pbSize, // beginning of putback area - buffer+pbSize, // read position - buffer+pbSize); // end position - } - - protected: - // insert new characters into the buffer - virtual int_type underflow () { -#ifndef _MSC_VER - using std::memmove; -#endif - - // is read position before end of buffer? - if (gptr() < egptr()) { - return traits_type::to_int_type(*gptr()); - } - - /* process size of putback area - * - use number of characters read - * - but at most size of putback area - */ - int numPutback; - numPutback = gptr() - eback(); - if (numPutback > pbSize) { - numPutback = pbSize; - } - - /* copy up to pbSize characters previously read into - * the putback area - */ - memmove (buffer+(pbSize-numPutback), gptr()-numPutback, - numPutback); - - // read at most bufSize new characters - int num; - num = read (fd, buffer+pbSize, bufSize); - if (num <= 0) { - // ERROR or EOF - return EOF; - } - - // reset buffer pointers - setg (buffer+(pbSize-numPutback), // beginning of putback area - buffer+pbSize, // read position - buffer+pbSize+num); // end of buffer - - // return next character - return traits_type::to_int_type(*gptr()); - } -}; - -class fdistream : public std::istream { - protected: - fdinbuf buf; - public: - fdistream (int fd) : std::istream(0), buf(fd) { - rdbuf(&buf); - } -}; - - -} // END namespace boost - -#endif /*BOOST_FDSTREAM_HPP*/ |