// GetString():
// Reads a null-terminated string from a binary file (meaning it stops
// reading when it finds a null character). Returns false if no
// null was found before _len was reached or if the end of the buffer
// was read past.
char * iBufferStream::GetString( char * string, int _len ) {
if( is_error || IsEOB() ) {
is_error = true;
return NULL;
}
for( int i=0; i < _len; i++ ) {
if( (pos + i) >= len ) { // Check for the end of the buffer
is_error = true;
return NULL;
}
string[i] = buffer[pos + i]; // Store the char (including '\0')
if( buffer[pos + i] == '\0' ) // Test a char
break;
}
// See if we passed _len before finding a null char
if( i == _len ) {
is_error = true;
return NULL;
}
pos += i + 1; // Set pos past the '\0' (hence the +1)
return string;
}
// Get( char )
// Reads a single char from the buffer. Returns
// false if an error occured (like hitting the eob).
bool iBufferStream::Get( char & byte ) {
if( is_error || IsEOB() ) {
is_error = true;
return NULL;
}
byte = buffer[pos++];
return true;
}
// Get( char *, int )
// Reads _len characters from the buffer into _buf.
// Returns NULL if there aren't that many characters
// to read, and a pointer to _buf if everything's OK.
char * iBufferStream::Get( char * _buf, int _len ) {
if( is_error || IsEOB() ) {
is_error = true;
return NULL;
}
if( pos + _len > len ) {
is_error = true;
return NULL;
}
memcpy( _buf, &(buffer[ pos ]), _len );
pos += _len;
return _buf;
}
//Inserts a character into the buffer.
void CConsole::InsertChar(const int szChar, const wchar_t cooked)
{
static int iHistoryPos = -1;
if (!m_bVisible) return;
switch (szChar)
{
case SDLK_RETURN:
iHistoryPos = -1;
m_iMsgHistPos = 1;
ProcessBuffer(m_szBuffer);
FlushBuffer();
return;
case SDLK_TAB:
// Auto Complete
return;
case SDLK_BACKSPACE:
if (IsEmpty() || IsBOB()) return;
if (m_iBufferPos == m_iBufferLength)
m_szBuffer[m_iBufferPos - 1] = '\0';
else
{
for (int j = m_iBufferPos-1; j < m_iBufferLength-1; j++)
m_szBuffer[j] = m_szBuffer[j+1]; // move chars to left
m_szBuffer[m_iBufferLength-1] = '\0';
}
m_iBufferPos--;
m_iBufferLength--;
return;
case SDLK_DELETE:
if (IsEmpty() || IsEOB()) return;
if (m_iBufferPos == m_iBufferLength-1)
{
m_szBuffer[m_iBufferPos] = '\0';
m_iBufferLength--;
}
else
{
if (g_keys[SDLK_RCTRL] || g_keys[SDLK_LCTRL])
{
// Make Ctrl-Delete delete up to end of line
m_szBuffer[m_iBufferPos] = '\0';
m_iBufferLength = m_iBufferPos;
}
else
{
// Delete just one char and move the others left
for(int j=m_iBufferPos; j<m_iBufferLength-1; j++)
m_szBuffer[j] = m_szBuffer[j+1];
m_szBuffer[m_iBufferLength-1] = '\0';
m_iBufferLength--;
}
}
return;
case SDLK_HOME:
if (g_keys[SDLK_RCTRL] || g_keys[SDLK_LCTRL])
{
CScopeLock lock(m_Mutex); // needed for safe access to m_deqMsgHistory
int linesShown = (int)m_fHeight/m_iFontHeight - 4;
m_iMsgHistPos = clamp((int)m_deqMsgHistory.size() - linesShown, 1, (int)m_deqMsgHistory.size());
}
else
{
m_iBufferPos = 0;
}
return;
case SDLK_END:
if (g_keys[SDLK_RCTRL] || g_keys[SDLK_LCTRL])
{
m_iMsgHistPos = 1;
}
else
{
m_iBufferPos = m_iBufferLength;
}
return;
case SDLK_LEFT:
if (m_iBufferPos) m_iBufferPos--;
return;
case SDLK_RIGHT:
if (m_iBufferPos != m_iBufferLength) m_iBufferPos++;
return;
// BEGIN: Buffer History Lookup
case SDLK_UP:
if (m_deqBufHistory.size() && iHistoryPos != (int)m_deqBufHistory.size() - 1)
{
iHistoryPos++;
SetBuffer(m_deqBufHistory.at(iHistoryPos).c_str());
m_iBufferPos = m_iBufferLength;
}
return;
case SDLK_DOWN:
if (m_deqBufHistory.size())
{
if (iHistoryPos > 0)
{
iHistoryPos--;
SetBuffer(m_deqBufHistory.at(iHistoryPos).c_str());
m_iBufferPos = m_iBufferLength;
}
else if (iHistoryPos == 0)
{
iHistoryPos--;
FlushBuffer();
}
}
return;
// END: Buffer History Lookup
// BEGIN: Message History Lookup
case SDLK_PAGEUP:
{
CScopeLock lock(m_Mutex); // needed for safe access to m_deqMsgHistory
if (m_iMsgHistPos != (int)m_deqMsgHistory.size()) m_iMsgHistPos++;
return;
}
case SDLK_PAGEDOWN:
if (m_iMsgHistPos != 1) m_iMsgHistPos--;
return;
// END: Message History Lookup
default: //Insert a character
if (IsFull()) return;
if (cooked == 0) return;
if (IsEOB()) //are we at the end of the buffer?
m_szBuffer[m_iBufferPos] = cooked; //cat char onto end
else
{ //we need to insert
int i;
for(i=m_iBufferLength; i>m_iBufferPos; i--)
m_szBuffer[i] = m_szBuffer[i-1]; // move chars to right
m_szBuffer[i] = cooked;
}
m_iBufferPos++;
m_iBufferLength++;
return;
}
}
//Inserts a character into the buffer.
void CConsole::InsertChar(const int szChar, const wchar_t cooked )
{
static int iHistoryPos = -1;
if (!m_bVisible) return;
switch (szChar){
case SDLK_RETURN:
iHistoryPos = -1;
m_iMsgHistPos = 1;
ProcessBuffer(m_szBuffer);
FlushBuffer();
return;
case SDLK_TAB:
// Auto Complete
return;
case SDLK_BACKSPACE:
if (IsEmpty() || IsBOB()) return;
if (m_iBufferPos == m_iBufferLength)
m_szBuffer[m_iBufferPos - 1] = '\0';
else{
for(int j=m_iBufferPos-1; j<m_iBufferLength-1; j++)
m_szBuffer[j] = m_szBuffer[j+1]; // move chars to left
m_szBuffer[m_iBufferLength-1] = '\0';
}
m_iBufferPos--;
m_iBufferLength--;
return;
case SDLK_DELETE:
if (IsEmpty() || IsEOB()) return;
if (m_iBufferPos == m_iBufferLength-1)
{
m_szBuffer[m_iBufferPos] = '\0';
m_iBufferLength--;
}
else
{
if (g_keys[SDLK_RCTRL] || g_keys[SDLK_LCTRL])
{
// Make Ctrl-Delete delete up to end of line
m_szBuffer[m_iBufferPos] = '\0';
m_iBufferLength = m_iBufferPos;
}
else
{
// Delete just one char and move the others left
for(int j=m_iBufferPos; j<m_iBufferLength-1; j++)
m_szBuffer[j] = m_szBuffer[j+1];
m_szBuffer[m_iBufferLength-1] = '\0';
m_iBufferLength--;
}
}
return;
case SDLK_HOME:
if (g_keys[SDLK_RCTRL] || g_keys[SDLK_LCTRL])
{
CScopeLock lock(m_Mutex); // needed for safe access to m_deqMsgHistory
int linesShown = (int)m_fHeight/m_iFontHeight - 4;
m_iMsgHistPos = clamp((int)m_deqMsgHistory.size() - linesShown, 1, (int)m_deqMsgHistory.size());
}
else
{
m_iBufferPos = 0;
}
return;
case SDLK_END:
if (g_keys[SDLK_RCTRL] || g_keys[SDLK_LCTRL])
{
m_iMsgHistPos = 1;
}
else
{
m_iBufferPos = m_iBufferLength;
}
return;
case SDLK_LEFT:
if (m_iBufferPos) m_iBufferPos--;
return;
case SDLK_RIGHT:
if (m_iBufferPos != m_iBufferLength) m_iBufferPos++;
return;
// BEGIN: Buffer History Lookup
case SDLK_UP:
if ( m_deqBufHistory.size() )
{
int oldHistoryPos = iHistoryPos;
while( iHistoryPos != (int)m_deqBufHistory.size() - 1)
{
iHistoryPos++;
std::wstring& histString = m_deqBufHistory.at(iHistoryPos);
if((int)histString.length() >= m_iBufferPos)
{
bool bad = false;
for(int i=0; i<m_iBufferPos; i++)
{
if(histString[i] != m_szBuffer[i])
{
bad = true; break;
}
}
if(!bad)
{
SetBuffer(m_deqBufHistory.at(iHistoryPos).c_str());
return;
}
}
}
// if we got here, failed to find a string with the right prefix;
// revert to the old position in case the user types more stuff
iHistoryPos = oldHistoryPos;
}
return;
case SDLK_DOWN:
if ( m_deqBufHistory.size() && iHistoryPos > 0 )
{
int oldHistoryPos = iHistoryPos;
while( iHistoryPos != 0)
{
iHistoryPos--;
std::wstring& histString = m_deqBufHistory.at(iHistoryPos);
if((int)histString.length() >= m_iBufferPos)
{
bool bad = false;
for(int i=0; i<m_iBufferPos; i++)
{
if(histString[i] != m_szBuffer[i])
{
bad = true; break;
}
}
if(!bad)
{
SetBuffer(m_deqBufHistory.at(iHistoryPos).c_str());
return;
}
}
}
// if we got here, failed to find a string with the right prefix;
// revert to the old position in case the user types more stuff,
// and also clear any complietion we might've added going up
iHistoryPos = oldHistoryPos;
m_szBuffer[m_iBufferPos] = 0;
m_iBufferLength = m_iBufferPos;
}
return;
// END: Buffer History Lookup
// BEGIN: Message History Lookup
case SDLK_PAGEUP:
{
CScopeLock lock(m_Mutex); // needed for safe access to m_deqMsgHistory
if (m_iMsgHistPos != (int)m_deqMsgHistory.size()) m_iMsgHistPos++;
return;
}
case SDLK_PAGEDOWN:
if (m_iMsgHistPos != 1) m_iMsgHistPos--;
return;
// END: Message History Lookup
default: //Insert a character
if (IsFull()) return;
if (cooked == 0) return;
if (IsEOB()) //are we at the end of the buffer?
m_szBuffer[m_iBufferPos] = cooked; //cat char onto end
else{ //we need to insert
int i;
for(i=m_iBufferLength; i>m_iBufferPos; i--)
m_szBuffer[i] = m_szBuffer[i-1]; // move chars to right
m_szBuffer[i] = cooked;
}
m_iBufferPos++;
m_iBufferLength++;
return;
}
}
