More work on streams
Krzysztof Dermont
parent
3aca1de731
commit
68d41d3b21
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@ -75,7 +75,8 @@ common/profile.cpp
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common/restext.cpp
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common/restext.cpp
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common/stringutils.cpp
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common/stringutils.cpp
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common/resources/resourcemanager.cpp
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common/resources/resourcemanager.cpp
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common/resources/resourcestreambuffer.cpp
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common/resources/inputstreambuffer.cpp
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common/resources/outputstreambuffer.cpp
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common/resources/inputstream.cpp
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common/resources/inputstream.cpp
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common/resources/outputstream.cpp
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common/resources/outputstream.cpp
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common/resources/sndfile.cpp
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common/resources/sndfile.cpp
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@ -15,10 +15,10 @@
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// * along with this program. If not, see http://www.gnu.org/licenses/.
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// * along with this program. If not, see http://www.gnu.org/licenses/.
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#include "common/resources/inputstream.h"
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#include "common/resources/inputstream.h"
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#include "common/resources/resourcestreambuffer.h"
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#include "common/resources/inputstreambuffer.h"
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CInputStream::CInputStream() : std::istream(new CResourceStreamBuffer())
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CInputStream::CInputStream() : std::istream(new CInputStreamBuffer())
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{
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{
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}
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}
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@ -31,23 +31,23 @@ CInputStream::~CInputStream()
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void CInputStream::open(const std::string& filename)
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void CInputStream::open(const std::string& filename)
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{
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{
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static_cast<CResourceStreamBuffer *>(rdbuf())->open(filename);
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static_cast<CInputStreamBuffer *>(rdbuf())->open(filename);
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}
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}
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void CInputStream::close()
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void CInputStream::close()
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{
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{
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static_cast<CResourceStreamBuffer *>(rdbuf())->close();
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static_cast<CInputStreamBuffer *>(rdbuf())->close();
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}
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}
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bool CInputStream::is_open()
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bool CInputStream::is_open()
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{
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{
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return static_cast<CResourceStreamBuffer *>(rdbuf())->is_open();
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return static_cast<CInputStreamBuffer *>(rdbuf())->is_open();
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}
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}
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size_t CInputStream::size()
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size_t CInputStream::size()
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{
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{
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return static_cast<CResourceStreamBuffer *>(rdbuf())->size();
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return static_cast<CInputStreamBuffer *>(rdbuf())->size();
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}
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}
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@ -0,0 +1,129 @@
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// * This file is part of the COLOBOT source code
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// * Copyright (C) 2014 Polish Portal of Colobot (PPC)
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// *
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// * This program is free software: you can redistribute it and/or modify
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// * it under the terms of the GNU General Public License as published by
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// * the Free Software Foundation, either version 3 of the License, or
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// * (at your option) any later version.
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// *
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// * This program is distributed in the hope that it will be useful,
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// * but WITHOUT ANY WARRANTY; without even the implied warranty of
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// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// * GNU General Public License for more details.
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// *
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// * You should have received a copy of the GNU General Public License
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// * along with this program. If not, see http://www.gnu.org/licenses/.
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#include "common/resources/inputstreambuffer.h"
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#include <stdexcept>
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#include <sstream>
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CInputStreamBuffer::CInputStreamBuffer(size_t buffer_size) : m_buffer_size(buffer_size)
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{
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if (buffer_size <= 0)
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{
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throw std::runtime_error("File buffer must be larger then 0 bytes");
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}
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m_buffer = new char[buffer_size];
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m_file = nullptr;
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}
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CInputStreamBuffer::~CInputStreamBuffer()
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{
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close();
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delete m_buffer;
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}
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void CInputStreamBuffer::open(const std::string &filename)
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{
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if (PHYSFS_isInit())
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m_file = PHYSFS_openRead(filename.c_str());
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}
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void CInputStreamBuffer::close()
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{
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if (is_open())
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PHYSFS_close(m_file);
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}
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bool CInputStreamBuffer::is_open()
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{
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return m_file;
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}
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size_t CInputStreamBuffer::size()
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{
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return PHYSFS_fileLength(m_file);
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}
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std::streambuf::int_type CInputStreamBuffer::underflow()
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{
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if (gptr() < egptr())
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return traits_type::to_int_type(*gptr());
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if (PHYSFS_eof(m_file))
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return traits_type::eof();
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PHYSFS_sint64 read_count = PHYSFS_read(m_file, m_buffer, sizeof(char), m_buffer_size);
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if (read_count <= 0)
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return traits_type::eof();
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setg(m_buffer, m_buffer, m_buffer + read_count);
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return traits_type::to_int_type(*gptr());
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}
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std::streampos CInputStreamBuffer::seekpos(std::streampos sp, std::ios_base::openmode which)
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{
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return seekoff(off_type(sp), std::ios_base::beg, which);
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}
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std::streampos CInputStreamBuffer::seekoff(std::streamoff off, std::ios_base::seekdir way, std::ios_base::openmode which)
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{
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/* A bit of explanation:
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We are reading file by m_buffer_size parts so our 3 internal pointers will be
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* eback (not used here) - start of block
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* gptr - position of read cursor in block
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* egtpr - end of block
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off argument is relative to way */
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std::streamoff new_position;
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switch (way)
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{
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case std::ios_base::beg:
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new_position = off;
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break;
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case std::ios_base::cur:
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// tell will give cursor at begining of block so we have to add where in block we currently are
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new_position = off + static_cast<off_type>(PHYSFS_tell(m_file)) - static_cast<off_type> (egptr() - gptr());
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break;
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case std::ios_base::end:
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new_position = off + static_cast<off_type>(PHYSFS_fileLength(m_file));
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break;
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default:
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break;
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}
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if (PHYSFS_seek(m_file, new_position))
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{
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setg(m_buffer, m_buffer, m_buffer); // reset buffer
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return pos_type(new_position);
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}
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return pos_type(off_type(-1));
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}
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@ -0,0 +1,48 @@
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// * This file is part of the COLOBOT source code
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// * Copyright (C) 2014 Polish Portal of Colobot (PPC)
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// *
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// * This program is free software: you can redistribute it and/or modify
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// * it under the terms of the GNU General Public License as published by
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// * the Free Software Foundation, either version 3 of the License, or
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// * (at your option) any later version.
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// *
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// * This program is distributed in the hope that it will be useful,
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// * but WITHOUT ANY WARRANTY; without even the implied warranty of
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// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// * GNU General Public License for more details.
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// *
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// * You should have received a copy of the GNU General Public License
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// * along with this program. If not, see http://www.gnu.org/licenses/.
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#pragma once
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#include <streambuf>
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#include <string>
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#include <physfs.h>
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class CInputStreamBuffer : public std::streambuf
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{
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public:
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CInputStreamBuffer(size_t buffer_size = 512);
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virtual ~CInputStreamBuffer();
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void open(const std::string &filename);
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void close();
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bool is_open();
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size_t size();
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private:
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int_type underflow();
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std::streampos seekpos(std::streampos sp, std::ios_base::openmode which);
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std::streampos seekoff(std::streamoff off, std::ios_base::seekdir way, std::ios_base::openmode which);
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// copy ctor and assignment not implemented;
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// copying not allowed
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CInputStreamBuffer(const CInputStreamBuffer &);
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CInputStreamBuffer &operator= (const CInputStreamBuffer &);
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PHYSFS_File *m_file;
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char *m_buffer;
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size_t m_buffer_size;
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};
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@ -15,10 +15,10 @@
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// * along with this program. If not, see http://www.gnu.org/licenses/.
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// * along with this program. If not, see http://www.gnu.org/licenses/.
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#include "common/resources/outputstream.h"
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#include "common/resources/outputstream.h"
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#include "common/resources/resourcestreambuffer.h"
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#include "common/resources/outputstreambuffer.h"
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COutputStream::COutputStream() : std::ostream(new CResourceStreamBuffer())
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COutputStream::COutputStream() : std::ostream(new COutputStreamBuffer())
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{
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{
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}
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}
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@ -31,23 +31,17 @@ COutputStream::~COutputStream()
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void COutputStream::open(const std::string& filename)
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void COutputStream::open(const std::string& filename)
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{
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{
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static_cast<CResourceStreamBuffer *>(rdbuf())->open(filename);
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static_cast<COutputStreamBuffer *>(rdbuf())->open(filename);
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}
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}
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void COutputStream::close()
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void COutputStream::close()
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{
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{
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static_cast<CResourceStreamBuffer *>(rdbuf())->close();
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static_cast<COutputStreamBuffer *>(rdbuf())->close();
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}
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}
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bool COutputStream::is_open()
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bool COutputStream::is_open()
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{
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{
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return static_cast<CResourceStreamBuffer *>(rdbuf())->is_open();
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return static_cast<COutputStreamBuffer *>(rdbuf())->is_open();
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}
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size_t COutputStream::size()
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{
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return static_cast<CResourceStreamBuffer *>(rdbuf())->size();
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}
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}
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@ -28,6 +28,5 @@ public:
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void open(const std::string &filename);
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void open(const std::string &filename);
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void close();
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void close();
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bool is_open();
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bool is_open();
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size_t size();
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};
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};
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@ -0,0 +1,85 @@
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// * This file is part of the COLOBOT source code
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// * Copyright (C) 2014 Polish Portal of Colobot (PPC)
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// *
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// * This program is free software: you can redistribute it and/or modify
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// * it under the terms of the GNU General Public License as published by
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// * the Free Software Foundation, either version 3 of the License, or
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// * (at your option) any later version.
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// *
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// * This program is distributed in the hope that it will be useful,
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// * but WITHOUT ANY WARRANTY; without even the implied warranty of
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// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// * GNU General Public License for more details.
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// *
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// * You should have received a copy of the GNU General Public License
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// * along with this program. If not, see http://www.gnu.org/licenses/.
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#include "common/resources/outputstreambuffer.h"
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#include <stdexcept>
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#include <sstream>
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COutputStreamBuffer::COutputStreamBuffer(size_t buffer_size) : m_buffer_size(buffer_size)
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{
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m_file = nullptr;
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m_buffer = new char[buffer_size];
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setp(m_buffer, m_buffer + buffer_size);
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}
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COutputStreamBuffer::~COutputStreamBuffer()
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{
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close();
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delete m_buffer;
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}
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void COutputStreamBuffer::open(const std::string &filename)
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{
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if (PHYSFS_isInit())
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m_file = PHYSFS_openWrite(filename.c_str());
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}
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void COutputStreamBuffer::close()
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{
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if (is_open())
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PHYSFS_close(m_file);
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}
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bool COutputStreamBuffer::is_open()
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{
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return m_file;
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}
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std::streambuf::int_type COutputStreamBuffer::overflow(std::streambuf::int_type ch)
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{
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/* This function should be called when pptr() == epptr(). We use it also in sync()
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so we also have to write data if buffer is not full. */
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if (pbase() == pptr()) // no data to write, sync() called with empty buffer
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return 0;
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// save buffer
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PHYSFS_sint64 bytes_written = PHYSFS_write(m_file, pbase(), 1, pptr() - pbase());
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if (bytes_written <= 0)
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return traits_type::eof();
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pbump(-bytes_written);
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// write final char
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if (ch != traits_type::eof()) {
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bytes_written = PHYSFS_write(m_file, &ch, 1, 1);
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if (bytes_written <= 0)
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return traits_type::eof();
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}
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return ch;
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}
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int COutputStreamBuffer::sync()
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{
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return overflow(traits_type::eof());
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}
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@ -0,0 +1,45 @@
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// * This file is part of the COLOBOT source code
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// * Copyright (C) 2014 Polish Portal of Colobot (PPC)
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// *
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// * This program is free software: you can redistribute it and/or modify
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||||||
|
// * it under the terms of the GNU General Public License as published by
|
||||||
|
// * the Free Software Foundation, either version 3 of the License, or
|
||||||
|
// * (at your option) any later version.
|
||||||
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// *
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||||||
|
// * This program is distributed in the hope that it will be useful,
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||||||
|
// * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||||
|
// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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||||||
|
// * GNU General Public License for more details.
|
||||||
|
// *
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||||||
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// * You should have received a copy of the GNU General Public License
|
||||||
|
// * along with this program. If not, see http://www.gnu.org/licenses/.
|
||||||
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#pragma once
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#include <streambuf>
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#include <string>
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#include <physfs.h>
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|
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class COutputStreamBuffer : public std::streambuf
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{
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public:
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COutputStreamBuffer(size_t buffer_size = 512);
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virtual ~COutputStreamBuffer();
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void open(const std::string &filename);
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void close();
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bool is_open();
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private:
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||||||
|
int_type overflow(int_type ch);
|
||||||
|
int sync();
|
||||||
|
|
||||||
|
// copy ctor and assignment not implemented;
|
||||||
|
// copying not allowed
|
||||||
|
COutputStreamBuffer(const COutputStreamBuffer &);
|
||||||
|
COutputStreamBuffer &operator= (const COutputStreamBuffer &);
|
||||||
|
|
||||||
|
PHYSFS_File *m_file;
|
||||||
|
char *m_buffer;
|
||||||
|
size_t m_buffer_size;
|
||||||
|
};
|
||||||
|
|
@ -1,122 +0,0 @@
|
||||||
// * This file is part of the COLOBOT source code
|
|
||||||
// * Copyright (C) 2014 Polish Portal of Colobot (PPC)
|
|
||||||
// *
|
|
||||||
// * This program is free software: you can redistribute it and/or modify
|
|
||||||
// * it under the terms of the GNU General Public License as published by
|
|
||||||
// * the Free Software Foundation, either version 3 of the License, or
|
|
||||||
// * (at your option) any later version.
|
|
||||||
// *
|
|
||||||
// * This program is distributed in the hope that it will be useful,
|
|
||||||
// * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
||||||
// * GNU General Public License for more details.
|
|
||||||
// *
|
|
||||||
// * You should have received a copy of the GNU General Public License
|
|
||||||
// * along with this program. If not, see http://www.gnu.org/licenses/.
|
|
||||||
|
|
||||||
#include "common/resources/resourcestreambuffer.h"
|
|
||||||
|
|
||||||
#include <stdexcept>
|
|
||||||
#include <sstream>
|
|
||||||
|
|
||||||
CResourceStreamBuffer::CResourceStreamBuffer(size_t buffer_size) : m_buffer_size(buffer_size)
|
|
||||||
{
|
|
||||||
if (buffer_size <= 0)
|
|
||||||
{
|
|
||||||
throw std::runtime_error("File buffer must be larger then 0 bytes");
|
|
||||||
}
|
|
||||||
|
|
||||||
m_buffer = new char[buffer_size];
|
|
||||||
m_file = nullptr;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
CResourceStreamBuffer::~CResourceStreamBuffer()
|
|
||||||
{
|
|
||||||
close();
|
|
||||||
delete m_buffer;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
void CResourceStreamBuffer::open(const std::string &filename)
|
|
||||||
{
|
|
||||||
if (PHYSFS_isInit())
|
|
||||||
{
|
|
||||||
m_file = PHYSFS_openRead(filename.c_str());
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
void CResourceStreamBuffer::close()
|
|
||||||
{
|
|
||||||
if (is_open())
|
|
||||||
{
|
|
||||||
PHYSFS_close(m_file);
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
bool CResourceStreamBuffer::is_open()
|
|
||||||
{
|
|
||||||
return m_file;
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
size_t CResourceStreamBuffer::size()
|
|
||||||
{
|
|
||||||
return PHYSFS_fileLength(m_file);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
std::streambuf::int_type CResourceStreamBuffer::underflow()
|
|
||||||
{
|
|
||||||
if (PHYSFS_eof(m_file))
|
|
||||||
{
|
|
||||||
return traits_type::eof();
|
|
||||||
}
|
|
||||||
|
|
||||||
PHYSFS_sint64 read_count = PHYSFS_read(m_file, m_buffer, sizeof(char), m_buffer_size);
|
|
||||||
if (read_count <= 0)
|
|
||||||
{
|
|
||||||
return traits_type::eof();
|
|
||||||
}
|
|
||||||
|
|
||||||
setg(m_buffer, m_buffer, m_buffer + read_count);
|
|
||||||
|
|
||||||
return traits_type::to_int_type(*gptr());
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
std::streampos CResourceStreamBuffer::seekpos(std::streampos sp, std::ios_base::openmode which)
|
|
||||||
{
|
|
||||||
return seekoff(off_type(sp), std::ios_base::beg, which);
|
|
||||||
}
|
|
||||||
|
|
||||||
|
|
||||||
std::streampos CResourceStreamBuffer::seekoff(std::streamoff off, std::ios_base::seekdir way, std::ios_base::openmode which)
|
|
||||||
{
|
|
||||||
/* A bit of explanation:
|
|
||||||
We are reading file by m_buffer_size parts so our 3 internal pointers will be
|
|
||||||
* eback (not used here) - start of block
|
|
||||||
* gptr - position of read cursor in block
|
|
||||||
* egtpr - end of block
|
|
||||||
off argument is relative to way */
|
|
||||||
|
|
||||||
switch (way)
|
|
||||||
{
|
|
||||||
case std::ios_base::beg:
|
|
||||||
return pos_type(off_type(off));
|
|
||||||
|
|
||||||
case std::ios_base::cur:
|
|
||||||
// tell will give cursor at begining of block so we have to add where in block we currently are
|
|
||||||
return off + static_cast<off_type>(PHYSFS_tell(m_file)) - static_cast<off_type> (egptr() - gptr());
|
|
||||||
|
|
||||||
case std::ios_base::end:
|
|
||||||
return off + static_cast<off_type>(PHYSFS_fileLength(m_file));
|
|
||||||
|
|
||||||
default:
|
|
||||||
break;
|
|
||||||
}
|
|
||||||
|
|
||||||
return pos_type(off_type(-1));
|
|
||||||
}
|
|
||||||
|
|
@ -1,47 +0,0 @@
|
||||||
// * This file is part of the COLOBOT source code
|
|
||||||
// * Copyright (C) 2014 Polish Portal of Colobot (PPC)
|
|
||||||
// *
|
|
||||||
// * This program is free software: you can redistribute it and/or modify
|
|
||||||
// * it under the terms of the GNU General Public License as published by
|
|
||||||
// * the Free Software Foundation, either version 3 of the License, or
|
|
||||||
// * (at your option) any later version.
|
|
||||||
// *
|
|
||||||
// * This program is distributed in the hope that it will be useful,
|
|
||||||
// * but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
||||||
// * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
||||||
// * GNU General Public License for more details.
|
|
||||||
// *
|
|
||||||
// * You should have received a copy of the GNU General Public License
|
|
||||||
// * along with this program. If not, see http://www.gnu.org/licenses/.
|
|
||||||
|
|
||||||
#pragma once
|
|
||||||
|
|
||||||
#include <streambuf>
|
|
||||||
#include <string>
|
|
||||||
#include <physfs.h>
|
|
||||||
|
|
||||||
class CResourceStreamBuffer : public std::streambuf
|
|
||||||
{
|
|
||||||
public:
|
|
||||||
CResourceStreamBuffer(size_t buffer_size = 512);
|
|
||||||
virtual ~CResourceStreamBuffer();
|
|
||||||
|
|
||||||
void open(const std::string &filename);
|
|
||||||
void close();
|
|
||||||
bool is_open();
|
|
||||||
size_t size();
|
|
||||||
|
|
||||||
private:
|
|
||||||
int_type underflow();
|
|
||||||
std::streampos seekpos(std::streampos sp, std::ios_base::openmode which);
|
|
||||||
std::streampos seekoff(std::streamoff off, std::ios_base::seekdir way, std::ios_base::openmode which);
|
|
||||||
|
|
||||||
// copy ctor and assignment not implemented;
|
|
||||||
// copying not allowed
|
|
||||||
CResourceStreamBuffer(const CResourceStreamBuffer &);
|
|
||||||
CResourceStreamBuffer &operator= (const CResourceStreamBuffer &);
|
|
||||||
|
|
||||||
PHYSFS_File *m_file;
|
|
||||||
char *m_buffer;
|
|
||||||
size_t m_buffer_size;
|
|
||||||
};
|
|
||||||
Loading…
Reference in New Issue