diff options
Diffstat (limited to 'smelt/sdl/CxImage/xmemfile.cpp')
| -rw-r--r-- | smelt/sdl/CxImage/xmemfile.cpp | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/smelt/sdl/CxImage/xmemfile.cpp b/smelt/sdl/CxImage/xmemfile.cpp deleted file mode 100644 index f235899..0000000 --- a/smelt/sdl/CxImage/xmemfile.cpp +++ /dev/null @@ -1,213 +0,0 @@ -#include "xmemfile.h"
-
-//////////////////////////////////////////////////////////
-CxMemFile::CxMemFile(uint8_t* pBuffer, uint32_t size)
-{
- m_pBuffer = pBuffer;
- m_Position = 0;
- m_Size = m_Edge = size;
- m_bFreeOnClose = (bool)(pBuffer==0);
- m_bEOF = false;
-}
-//////////////////////////////////////////////////////////
-CxMemFile::~CxMemFile()
-{
- Close();
-}
-//////////////////////////////////////////////////////////
-bool CxMemFile::Close()
-{
- if ( (m_pBuffer) && (m_bFreeOnClose) ){
- free(m_pBuffer);
- m_pBuffer = NULL;
- m_Size = 0;
- }
- return true;
-}
-//////////////////////////////////////////////////////////
-bool CxMemFile::Open()
-{
- if (m_pBuffer) return false; // Can't re-open without closing first
-
- m_Position = m_Size = m_Edge = 0;
- m_pBuffer=(uint8_t*)malloc(1);
- m_bFreeOnClose = true;
-
- return (m_pBuffer!=0);
-}
-//////////////////////////////////////////////////////////
-uint8_t* CxMemFile::GetBuffer(bool bDetachBuffer)
-{
- //can only detach, avoid inadvertantly attaching to
- // memory that may not be ours [Jason De Arte]
- if( bDetachBuffer )
- m_bFreeOnClose = false;
- return m_pBuffer;
-}
-//////////////////////////////////////////////////////////
-size_t CxMemFile::Read(void *buffer, size_t size, size_t count)
-{
- if (buffer==NULL) return 0;
-
- if (m_pBuffer==NULL) return 0;
- if (m_Position >= (int32_t)m_Size){
- m_bEOF = true;
- return 0;
- }
-
- int32_t nCount = (int32_t)(count*size);
- if (nCount == 0) return 0;
-
- int32_t nRead;
- if (m_Position + nCount > (int32_t)m_Size){
- m_bEOF = true;
- nRead = (m_Size - m_Position);
- } else
- nRead = nCount;
-
- memcpy(buffer, m_pBuffer + m_Position, nRead);
- m_Position += nRead;
-
- return (size_t)(nRead/size);
-}
-//////////////////////////////////////////////////////////
-size_t CxMemFile::Write(const void *buffer, size_t size, size_t count)
-{
- m_bEOF = false;
- if (m_pBuffer==NULL) return 0;
- if (buffer==NULL) return 0;
-
- int32_t nCount = (int32_t)(count*size);
- if (nCount == 0) return 0;
-
- if (m_Position + nCount > m_Edge){
- if (!Alloc(m_Position + nCount)){
- return false;
- }
- }
-
- memcpy(m_pBuffer + m_Position, buffer, nCount);
-
- m_Position += nCount;
-
- if (m_Position > (int32_t)m_Size) m_Size = m_Position;
-
- return count;
-}
-//////////////////////////////////////////////////////////
-bool CxMemFile::Seek(int32_t offset, int32_t origin)
-{
- m_bEOF = false;
- if (m_pBuffer==NULL) return false;
- int32_t lNewPos = m_Position;
-
- if (origin == SEEK_SET) lNewPos = offset;
- else if (origin == SEEK_CUR) lNewPos += offset;
- else if (origin == SEEK_END) lNewPos = m_Size + offset;
- else return false;
-
- if (lNewPos < 0) lNewPos = 0;
-
- m_Position = lNewPos;
- return true;
-}
-//////////////////////////////////////////////////////////
-int32_t CxMemFile::Tell()
-{
- if (m_pBuffer==NULL) return -1;
- return m_Position;
-}
-//////////////////////////////////////////////////////////
-int32_t CxMemFile::Size()
-{
- if (m_pBuffer==NULL) return -1;
- return m_Size;
-}
-//////////////////////////////////////////////////////////
-bool CxMemFile::Flush()
-{
- if (m_pBuffer==NULL) return false;
- return true;
-}
-//////////////////////////////////////////////////////////
-bool CxMemFile::Eof()
-{
- if (m_pBuffer==NULL) return true;
- return m_bEOF;
-}
-//////////////////////////////////////////////////////////
-int32_t CxMemFile::Error()
-{
- if (m_pBuffer==NULL) return -1;
- return (m_Position > (int32_t)m_Size);
-}
-//////////////////////////////////////////////////////////
-bool CxMemFile::PutC(uint8_t c)
-{
- m_bEOF = false;
- if (m_pBuffer==NULL) return false;
-
- if (m_Position >= m_Edge){
- if (!Alloc(m_Position + 1)){
- return false;
- }
- }
-
- m_pBuffer[m_Position++] = c;
-
- if (m_Position > (int32_t)m_Size) m_Size = m_Position;
-
- return true;
-}
-//////////////////////////////////////////////////////////
-int32_t CxMemFile::GetC()
-{
- if (m_pBuffer==NULL || m_Position >= (int32_t)m_Size){
- m_bEOF = true;
- return EOF;
- }
- return *(uint8_t*)((uint8_t*)m_pBuffer + m_Position++);
-}
-//////////////////////////////////////////////////////////
-char * CxMemFile::GetS(char *string, int32_t n)
-{
- n--;
- int32_t c,i=0;
- while (i<n){
- c = GetC();
- if (c == EOF) return 0;
- string[i++] = (char)c;
- if (c == '\n') break;
- }
- string[i] = 0;
- return string;
-}
-//////////////////////////////////////////////////////////
-int32_t CxMemFile::Scanf(const char *format, void* output)
-{
- return 0;
-}
-//////////////////////////////////////////////////////////
-bool CxMemFile::Alloc(uint32_t dwNewLen)
-{
- if (dwNewLen > (uint32_t)m_Edge)
- {
- // find new buffer size
- uint32_t dwNewBufferSize = (uint32_t)(((dwNewLen>>16)+1)<<16);
-
- // allocate new buffer
- if (m_pBuffer == NULL) m_pBuffer = (uint8_t*)malloc(dwNewBufferSize);
- else m_pBuffer = (uint8_t*)realloc(m_pBuffer, dwNewBufferSize);
- // I own this buffer now (caller knows nothing about it)
- m_bFreeOnClose = true;
-
- m_Edge = dwNewBufferSize;
- }
- return (m_pBuffer!=0);
-}
-//////////////////////////////////////////////////////////
-void CxMemFile::Free()
-{
- Close();
-}
-//////////////////////////////////////////////////////////
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