+++ /dev/null
-/*
-Copyright (c) 2001, Loki software, inc.
-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 Loki software 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 REGENTS 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.
-*/
-
-//
-// File class, can be a memory file or a regular disk file.
-// Originally from LeoCAD, used with permission from the author. :)
-//
-// Leonardo Zide (leo@lokigames.com)
-//
-
-#include "file.h"
-
-#include <memory.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdarg.h>
-
-/////////////////////////////////////////////////////////////////////////////
-// File construction/destruction
-
-MemStream::MemStream()
-{
- m_nGrowBytes = 1024;
- m_nPosition = 0;
- m_nBufferSize = 0;
- m_nFileSize = 0;
- m_pBuffer = NULL;
- m_bAutoDelete = true;
-}
-
-MemStream::MemStream(size_type nLen)
-{
- m_nGrowBytes = 1024;
- m_nPosition = 0;
- m_nBufferSize = 0;
- m_nFileSize = 0;
- m_pBuffer = NULL;
- m_bAutoDelete = true;
-
- GrowFile (nLen);
-}
-
-FileStream::FileStream()
-{
- m_hFile = NULL;
- m_bCloseOnDelete = false;
-}
-
-MemStream::~MemStream()
-{
- if (m_pBuffer)
- Close();
-
- m_nGrowBytes = 0;
- m_nPosition = 0;
- m_nBufferSize = 0;
- m_nFileSize = 0;
-}
-
-FileStream::~FileStream()
-{
- if (m_hFile != NULL && m_bCloseOnDelete)
- Close();
-}
-
-/////////////////////////////////////////////////////////////////////////////
-// File operations
-
-char* MemStream::ReadString(char* pBuf, size_type nMax)
-{
- int nRead = 0;
- unsigned char ch;
-
- if (nMax <= 0)
- return NULL;
- if (m_nPosition >= m_nFileSize)
- return NULL;
-
- while ((--nMax))
- {
- if (m_nPosition == m_nFileSize)
- break;
-
- ch = m_pBuffer[m_nPosition];
- m_nPosition++;
- pBuf[nRead++] = ch;
-
- if (ch == '\n')
- break;
- }
-
- pBuf[nRead] = '\0';
- return pBuf;
-}
-
-char* FileStream::ReadString(char* pBuf, size_type nMax)
-{
- return fgets(pBuf, static_cast<int>(nMax), m_hFile);
-}
-
-MemStream::size_type MemStream::read(byte_type* buffer, size_type length)
-{
- if (length == 0)
- return 0;
-
- if (m_nPosition > m_nFileSize)
- return 0;
-
- size_type nRead;
- if (m_nPosition + length > m_nFileSize)
- nRead = m_nFileSize - m_nPosition;
- else
- nRead = length;
-
- memcpy((unsigned char*)buffer, (unsigned char*)m_pBuffer + m_nPosition, nRead);
- m_nPosition += nRead;
-
- return nRead;
-}
-
-FileStream::size_type FileStream::read(byte_type* buffer, size_type length)
-{
- return fread(buffer, 1, length, m_hFile);
-}
-
-int MemStream::GetChar()
-{
- if (m_nPosition > m_nFileSize)
- return 0;
-
- unsigned char* ret = (unsigned char*)m_pBuffer + m_nPosition;
- m_nPosition++;
-
- return *ret;
-}
-
-int FileStream::GetChar()
-{
- return fgetc(m_hFile);
-}
-
-MemStream::size_type MemStream::write(const byte_type* buffer, size_type length)
-{
- if (length == 0)
- return 0;
-
- if (m_nPosition + length > m_nBufferSize)
- GrowFile(m_nPosition + length);
-
- memcpy((unsigned char*)m_pBuffer + m_nPosition, (unsigned char*)buffer, length);
-
- m_nPosition += size_type(length);
-
- if (m_nPosition > m_nFileSize)
- m_nFileSize = m_nPosition;
-
- return length;
-}
-
-FileStream::size_type FileStream::write(const byte_type* buffer, size_type length)
-{
- return fwrite(buffer, 1, length, m_hFile);
-}
-
-int MemStream::PutChar(int c)
-{
- if (m_nPosition + 1 > m_nBufferSize)
- GrowFile(m_nPosition + 1);
-
- unsigned char* bt = (unsigned char*)m_pBuffer + m_nPosition;
- *bt = c;
-
- m_nPosition++;
-
- if (m_nPosition > m_nFileSize)
- m_nFileSize = m_nPosition;
-
- return 1;
-}
-
-/*!\todo SPoG suggestion: replace printf with operator >> using c++ iostream and strstream */
-void FileStream::printf(const char* s, ...)
-{
- va_list args;
-
- va_start (args, s);
- vfprintf(m_hFile, s, args);
- va_end (args);
-}
-
-/*!\todo SPoG suggestion: replace printf with operator >> using c++ iostream and strstream */
-void MemStream::printf(const char* s, ...)
-{
- va_list args;
-
- char buffer[4096];
- va_start (args, s);
- vsprintf(buffer, s, args);
- va_end (args);
- write(reinterpret_cast<byte_type*>(buffer), strlen(buffer));
-}
-
-int FileStream::PutChar(int c)
-{
- return fputc(c, m_hFile);
-}
-
-bool FileStream::Open(const char *filename, const char *mode)
-{
- m_hFile = fopen(filename, mode);
- m_bCloseOnDelete = true;
-
- return (m_hFile != NULL);
-}
-
-void MemStream::Close()
-{
- m_nGrowBytes = 0;
- m_nPosition = 0;
- m_nBufferSize = 0;
- m_nFileSize = 0;
- if (m_pBuffer && m_bAutoDelete)
- free(m_pBuffer);
- m_pBuffer = NULL;
-}
-
-void FileStream::Close()
-{
- if (m_hFile != NULL)
- fclose(m_hFile);
-
- m_hFile = NULL;
- m_bCloseOnDelete = false;
-}
-
-int MemStream::Seek(offset_type lOff, int nFrom)
-{
- size_type lNewPos = m_nPosition;
-
- if (nFrom == SEEK_SET)
- lNewPos = lOff;
- else if (nFrom == SEEK_CUR)
- lNewPos += lOff;
- else if (nFrom == SEEK_END)
- lNewPos = m_nFileSize + lOff;
- else
- return (position_type)-1;
-
- m_nPosition = lNewPos;
-
- return static_cast<int>(m_nPosition);
-}
-
-int FileStream::Seek(offset_type lOff, int nFrom)
-{
- fseek (m_hFile, lOff, nFrom);
-
- return ftell(m_hFile);
-}
-
-MemStream::position_type MemStream::GetPosition() const
-{
- return m_nPosition;
-}
-
-FileStream::position_type FileStream::GetPosition() const
-{
- return ftell(m_hFile);
-}
-
-void MemStream::GrowFile(size_type nNewLen)
-{
- if (nNewLen > m_nBufferSize)
- {
- // grow the buffer
- size_type nNewBufferSize = m_nBufferSize;
-
- // determine new buffer size
- while (nNewBufferSize < nNewLen)
- nNewBufferSize += m_nGrowBytes;
-
- // allocate new buffer
- unsigned char* lpNew;
- if (m_pBuffer == NULL)
- lpNew = static_cast<unsigned char*>(malloc(nNewBufferSize));
- else
- lpNew = static_cast<unsigned char*>(realloc(m_pBuffer, nNewBufferSize));
-
- m_pBuffer = lpNew;
- m_nBufferSize = nNewBufferSize;
- }
-}
-
-void MemStream::Flush()
-{
- // Nothing to be done
-}
-
-void FileStream::Flush()
-{
- if (m_hFile == NULL)
- return;
-
- fflush(m_hFile);
-}
-
-void MemStream::Abort()
-{
- Close();
-}
-
-void FileStream::Abort()
-{
- if (m_hFile != NULL)
- {
- // close but ignore errors
- if (m_bCloseOnDelete)
- fclose(m_hFile);
- m_hFile = NULL;
- m_bCloseOnDelete = false;
- }
-}
-
-void MemStream::SetLength(size_type nNewLen)
-{
- if (nNewLen > m_nBufferSize)
- GrowFile(nNewLen);
-
- if (nNewLen < m_nPosition)
- m_nPosition = nNewLen;
-
- m_nFileSize = nNewLen;
-}
-
-void FileStream::SetLength(size_type nNewLen)
-{
- fseek(m_hFile, static_cast<long>(nNewLen), SEEK_SET);
-}
-
-MemStream::size_type MemStream::GetLength() const
-{
- return m_nFileSize;
-}
-
-FileStream::size_type FileStream::GetLength() const
-{
- size_type nLen, nCur;
-
- // Seek is a non const operation
- nCur = ftell(m_hFile);
- fseek(m_hFile, 0, SEEK_END);
- nLen = ftell(m_hFile);
- fseek(m_hFile, static_cast<long>(nCur), SEEK_SET);
-
- return nLen;
-}
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