more eol-style
git-svn-id: svn://svn.icculus.org/gtkradiant/GtkRadiant/branches/ZeroRadiant@185 8a3a26a2-13c4-0310-b231-cf6edde360e5
This commit is contained in:
TTimo
780
radiant/file.cpp
780
radiant/file.cpp
@@ -1,390 +1,390 @@
|
||||
/*
|
||||
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.
|
||||
*/
|
||||
|
||||
//
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||||
// File class, can be a memory file or a regular disk file.
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||||
// Originally from LeoCAD, used with permission from the author. :)
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||||
//
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||||
// Leonardo Zide (leo@lokigames.com)
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||||
//
|
||||
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||||
#include "stdafx.h"
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||||
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#include <stdio.h>
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||||
#include <memory.h>
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||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
|
||||
IDataStream::IDataStream()
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||||
{ }
|
||||
|
||||
IDataStream::~IDataStream()
|
||||
{ }
|
||||
|
||||
/////////////////////////////////////////////////////////////////////////////
|
||||
// File construction/destruction
|
||||
|
||||
MemStream::MemStream()
|
||||
{
|
||||
m_nGrowBytes = 1024;
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||||
m_nPosition = 0;
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||||
m_nBufferSize = 0;
|
||||
m_nFileSize = 0;
|
||||
m_pBuffer = NULL;
|
||||
m_bAutoDelete = true;
|
||||
}
|
||||
|
||||
MemStream::MemStream(unsigned long nLen)
|
||||
{
|
||||
m_nGrowBytes = 1024;
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||||
m_nPosition = 0;
|
||||
m_nBufferSize = 0;
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||||
m_nFileSize = 0;
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||||
m_pBuffer = NULL;
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m_bAutoDelete = true;
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|
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GrowFile (nLen);
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||||
}
|
||||
|
||||
FileStream::FileStream()
|
||||
{
|
||||
m_hFile = NULL;
|
||||
m_bCloseOnDelete = false;
|
||||
}
|
||||
|
||||
MemStream::~MemStream()
|
||||
{
|
||||
if (m_pBuffer)
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||||
Close();
|
||||
|
||||
m_nGrowBytes = 0;
|
||||
m_nPosition = 0;
|
||||
m_nBufferSize = 0;
|
||||
m_nFileSize = 0;
|
||||
}
|
||||
|
||||
FileStream::~FileStream()
|
||||
{
|
||||
if (m_hFile != NULL && m_bCloseOnDelete)
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||||
Close();
|
||||
}
|
||||
|
||||
/////////////////////////////////////////////////////////////////////////////
|
||||
// File operations
|
||||
|
||||
char* MemStream::ReadString(char* pBuf, unsigned long 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;
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||||
|
||||
if (ch == '\n')
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||||
break;
|
||||
}
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||||
|
||||
pBuf[nRead] = '\0';
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||||
return pBuf;
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||||
}
|
||||
|
||||
char* FileStream::ReadString(char* pBuf, unsigned long nMax)
|
||||
{
|
||||
return fgets(pBuf, nMax, m_hFile);
|
||||
}
|
||||
|
||||
unsigned long MemStream::Read(void* pBuf, unsigned long nCount)
|
||||
{
|
||||
if (nCount == 0)
|
||||
return 0;
|
||||
|
||||
if (m_nPosition > m_nFileSize)
|
||||
return 0;
|
||||
|
||||
unsigned long nRead;
|
||||
if (m_nPosition + nCount > m_nFileSize)
|
||||
nRead = (unsigned long)(m_nFileSize - m_nPosition);
|
||||
else
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||||
nRead = nCount;
|
||||
|
||||
memcpy((unsigned char*)pBuf, (unsigned char*)m_pBuffer + m_nPosition, nRead);
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||||
m_nPosition += nRead;
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||||
|
||||
return nRead;
|
||||
}
|
||||
|
||||
unsigned long FileStream::Read(void* pBuf, unsigned long nCount)
|
||||
{
|
||||
return fread(pBuf, 1, nCount, 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);
|
||||
}
|
||||
|
||||
unsigned long MemStream::Write(const void* pBuf, unsigned long nCount)
|
||||
{
|
||||
if (nCount == 0)
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||||
return 0;
|
||||
|
||||
if (m_nPosition + nCount > m_nBufferSize)
|
||||
GrowFile(m_nPosition + nCount);
|
||||
|
||||
memcpy((unsigned char*)m_pBuffer + m_nPosition, (unsigned char*)pBuf, nCount);
|
||||
|
||||
m_nPosition += nCount;
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||||
|
||||
if (m_nPosition > m_nFileSize)
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||||
m_nFileSize = m_nPosition;
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||||
|
||||
return nCount;
|
||||
}
|
||||
|
||||
unsigned long FileStream::Write(const void* pBuf, unsigned long nCount)
|
||||
{
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||||
return fwrite(pBuf, 1, nCount, m_hFile);
|
||||
}
|
||||
|
||||
int MemStream::PutChar(int c)
|
||||
{
|
||||
if (m_nPosition + 1 > m_nBufferSize)
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||||
GrowFile(m_nPosition + 1);
|
||||
|
||||
unsigned char* bt = (unsigned char*)m_pBuffer + m_nPosition;
|
||||
*bt = c;
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||||
|
||||
m_nPosition++;
|
||||
|
||||
if (m_nPosition > m_nFileSize)
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||||
m_nFileSize = m_nPosition;
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||||
|
||||
return 1;
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||||
}
|
||||
|
||||
/*!\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);
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||||
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);
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||||
vsprintf(buffer, s, args);
|
||||
va_end (args);
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||||
Write(buffer, strlen(buffer));
|
||||
}
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||||
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||||
int FileStream::PutChar(int c)
|
||||
{
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||||
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);
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|
||||
m_hFile = NULL;
|
||||
m_bCloseOnDelete = false;
|
||||
}
|
||||
|
||||
unsigned long MemStream::Seek(long lOff, int nFrom)
|
||||
{
|
||||
unsigned long 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 (unsigned long)-1;
|
||||
|
||||
m_nPosition = lNewPos;
|
||||
|
||||
return m_nPosition;
|
||||
}
|
||||
|
||||
unsigned long FileStream::Seek(long lOff, int nFrom)
|
||||
{
|
||||
fseek (m_hFile, lOff, nFrom);
|
||||
|
||||
return ftell(m_hFile);
|
||||
}
|
||||
|
||||
unsigned long MemStream::GetPosition() const
|
||||
{
|
||||
return m_nPosition;
|
||||
}
|
||||
|
||||
unsigned long FileStream::GetPosition() const
|
||||
{
|
||||
return ftell(m_hFile);
|
||||
}
|
||||
|
||||
void MemStream::GrowFile(unsigned long nNewLen)
|
||||
{
|
||||
if (nNewLen > m_nBufferSize)
|
||||
{
|
||||
// grow the buffer
|
||||
unsigned long nNewBufferSize = m_nBufferSize;
|
||||
|
||||
// determine new buffer size
|
||||
while (nNewBufferSize < nNewLen)
|
||||
nNewBufferSize += m_nGrowBytes;
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||||
|
||||
// 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(unsigned long nNewLen)
|
||||
{
|
||||
if (nNewLen > m_nBufferSize)
|
||||
GrowFile(nNewLen);
|
||||
|
||||
if (nNewLen < m_nPosition)
|
||||
m_nPosition = nNewLen;
|
||||
|
||||
m_nFileSize = nNewLen;
|
||||
}
|
||||
|
||||
void FileStream::SetLength(unsigned long nNewLen)
|
||||
{
|
||||
fseek(m_hFile, nNewLen, SEEK_SET);
|
||||
}
|
||||
|
||||
unsigned long MemStream::GetLength() const
|
||||
{
|
||||
return m_nFileSize;
|
||||
}
|
||||
|
||||
unsigned long FileStream::GetLength() const
|
||||
{
|
||||
unsigned long 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, nCur, SEEK_SET);
|
||||
|
||||
return nLen;
|
||||
}
|
||||
/*
|
||||
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 "stdafx.h"
|
||||
|
||||
#include <stdio.h>
|
||||
#include <memory.h>
|
||||
#include <stdlib.h>
|
||||
#include <string.h>
|
||||
|
||||
|
||||
IDataStream::IDataStream()
|
||||
{ }
|
||||
|
||||
IDataStream::~IDataStream()
|
||||
{ }
|
||||
|
||||
/////////////////////////////////////////////////////////////////////////////
|
||||
// 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(unsigned long 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, unsigned long 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, unsigned long nMax)
|
||||
{
|
||||
return fgets(pBuf, nMax, m_hFile);
|
||||
}
|
||||
|
||||
unsigned long MemStream::Read(void* pBuf, unsigned long nCount)
|
||||
{
|
||||
if (nCount == 0)
|
||||
return 0;
|
||||
|
||||
if (m_nPosition > m_nFileSize)
|
||||
return 0;
|
||||
|
||||
unsigned long nRead;
|
||||
if (m_nPosition + nCount > m_nFileSize)
|
||||
nRead = (unsigned long)(m_nFileSize - m_nPosition);
|
||||
else
|
||||
nRead = nCount;
|
||||
|
||||
memcpy((unsigned char*)pBuf, (unsigned char*)m_pBuffer + m_nPosition, nRead);
|
||||
m_nPosition += nRead;
|
||||
|
||||
return nRead;
|
||||
}
|
||||
|
||||
unsigned long FileStream::Read(void* pBuf, unsigned long nCount)
|
||||
{
|
||||
return fread(pBuf, 1, nCount, 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);
|
||||
}
|
||||
|
||||
unsigned long MemStream::Write(const void* pBuf, unsigned long nCount)
|
||||
{
|
||||
if (nCount == 0)
|
||||
return 0;
|
||||
|
||||
if (m_nPosition + nCount > m_nBufferSize)
|
||||
GrowFile(m_nPosition + nCount);
|
||||
|
||||
memcpy((unsigned char*)m_pBuffer + m_nPosition, (unsigned char*)pBuf, nCount);
|
||||
|
||||
m_nPosition += nCount;
|
||||
|
||||
if (m_nPosition > m_nFileSize)
|
||||
m_nFileSize = m_nPosition;
|
||||
|
||||
return nCount;
|
||||
}
|
||||
|
||||
unsigned long FileStream::Write(const void* pBuf, unsigned long nCount)
|
||||
{
|
||||
return fwrite(pBuf, 1, nCount, 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(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;
|
||||
}
|
||||
|
||||
unsigned long MemStream::Seek(long lOff, int nFrom)
|
||||
{
|
||||
unsigned long 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 (unsigned long)-1;
|
||||
|
||||
m_nPosition = lNewPos;
|
||||
|
||||
return m_nPosition;
|
||||
}
|
||||
|
||||
unsigned long FileStream::Seek(long lOff, int nFrom)
|
||||
{
|
||||
fseek (m_hFile, lOff, nFrom);
|
||||
|
||||
return ftell(m_hFile);
|
||||
}
|
||||
|
||||
unsigned long MemStream::GetPosition() const
|
||||
{
|
||||
return m_nPosition;
|
||||
}
|
||||
|
||||
unsigned long FileStream::GetPosition() const
|
||||
{
|
||||
return ftell(m_hFile);
|
||||
}
|
||||
|
||||
void MemStream::GrowFile(unsigned long nNewLen)
|
||||
{
|
||||
if (nNewLen > m_nBufferSize)
|
||||
{
|
||||
// grow the buffer
|
||||
unsigned long 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(unsigned long nNewLen)
|
||||
{
|
||||
if (nNewLen > m_nBufferSize)
|
||||
GrowFile(nNewLen);
|
||||
|
||||
if (nNewLen < m_nPosition)
|
||||
m_nPosition = nNewLen;
|
||||
|
||||
m_nFileSize = nNewLen;
|
||||
}
|
||||
|
||||
void FileStream::SetLength(unsigned long nNewLen)
|
||||
{
|
||||
fseek(m_hFile, nNewLen, SEEK_SET);
|
||||
}
|
||||
|
||||
unsigned long MemStream::GetLength() const
|
||||
{
|
||||
return m_nFileSize;
|
||||
}
|
||||
|
||||
unsigned long FileStream::GetLength() const
|
||||
{
|
||||
unsigned long 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, nCur, SEEK_SET);
|
||||
|
||||
return nLen;
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user