void cmdlineDoHistory(u08 action)
{
switch(action)
{
case CMDLINE_HISTORY_SAVE:
// copy CmdlineBuffer to history if not null string
if( strlen(CmdlineBuffer) )
strcpy(CmdlineHistory[0], CmdlineBuffer);
break;
case CMDLINE_HISTORY_PREV:
// copy history to current buffer
strcpy(CmdlineBuffer, CmdlineHistory[0]);
// set the buffer position to the end of the line
CmdlineBufferLength = strlen(CmdlineBuffer);
CmdlineBufferEditPos = CmdlineBufferLength;
// "re-paint" line
cmdlineRepaint();
break;
case CMDLINE_HISTORY_NEXT:
break;
}
}
void cmdlineInputFunc(unsigned char c)
{
u08 i;
// process the received character
// VT100 handling
// are we processing a VT100 command?
if(CmdlineInputVT100State == 2)
{
// we have already received ESC and [
// now process the vt100 code
switch(c)
{
case VT100_ARROWUP:
cmdlineDoHistory(CMDLINE_HISTORY_PREV);
break;
case VT100_ARROWDOWN:
cmdlineDoHistory(CMDLINE_HISTORY_NEXT);
break;
case VT100_ARROWRIGHT:
// if the edit position less than current string length
if(CmdlineBufferEditPos < CmdlineBufferLength)
{
// increment the edit position
CmdlineBufferEditPos++;
// move cursor forward one space (no erase)
cmdlineOutputFunc(ASCII_ESC);
cmdlineOutputFunc('[');
cmdlineOutputFunc(VT100_ARROWRIGHT);
}
else
{
// else, ring the bell
cmdlineOutputFunc(ASCII_BEL);
}
break;
case VT100_ARROWLEFT:
// if the edit position is non-zero
if(CmdlineBufferEditPos)
{
// decrement the edit position
CmdlineBufferEditPos--;
// move cursor back one space (no erase)
cmdlineOutputFunc(ASCII_BS);
}
else
{
// else, ring the bell
cmdlineOutputFunc(ASCII_BEL);
}
break;
default:
break;
}
// done, reset state
CmdlineInputVT100State = 0;
return;
}
else if(CmdlineInputVT100State == 1)
{
// we last received [ESC]
if(c == '[')
{
CmdlineInputVT100State = 2;
return;
}
else
CmdlineInputVT100State = 0;
}
else
{
// anything else, reset state
CmdlineInputVT100State = 0;
}
// Regular handling
if( (c >= 0x20) && (c < 0x7F) )
{
// character is printable
// is this a simple append
if(CmdlineBufferEditPos == CmdlineBufferLength)
{
// echo character to the output
cmdlineOutputFunc(c);
// add it to the command line buffer
CmdlineBuffer[CmdlineBufferEditPos++] = c;
// update buffer length
CmdlineBufferLength++;
}
else
{
// edit/cursor position != end of buffer
// we're inserting characters at a mid-line edit position
// make room at the insert point
CmdlineBufferLength++;
for(i=CmdlineBufferLength; i>CmdlineBufferEditPos; i--)
CmdlineBuffer[i] = CmdlineBuffer[i-1];
// insert character
CmdlineBuffer[CmdlineBufferEditPos++] = c;
// repaint
cmdlineRepaint();
// reposition cursor
for(i=CmdlineBufferEditPos; i<CmdlineBufferLength; i++)
cmdlineOutputFunc(ASCII_BS);
}
}
// handle special characters
else if((c == ASCII_CR) | (c == ASCII_LF))
{
// user pressed [ENTER]
// echo CR and LF to terminal
//rprintf(""",""res"":");
//rprintf(",");
cmdlineOutputFunc(ASCII_CR);
cmdlineOutputFunc(ASCII_LF);
// add null termination to command
CmdlineBuffer[CmdlineBufferLength++] = 0;
CmdlineBufferEditPos++;
// command is complete, process it
cmdlineProcessInputString();
// reset buffer
CmdlineBufferLength = 0;
CmdlineBufferEditPos = 0;
}
else if((c == ASCII_BS)|(c == ASCII_DEL))
{
if(CmdlineBufferEditPos)
{
// is this a simple delete (off the end of the line)
if(CmdlineBufferEditPos == CmdlineBufferLength)
{
// destructive backspace
// echo backspace-space-backspace
cmdlineOutputFunc(ASCII_BS);
cmdlineOutputFunc(' ');
cmdlineOutputFunc(ASCII_BS);
// decrement our buffer length and edit position
CmdlineBufferLength--;
CmdlineBufferEditPos--;
}
else
{
// edit/cursor position != end of buffer
// we're deleting characters at a mid-line edit position
// shift characters down, effectively deleting
CmdlineBufferLength--;
CmdlineBufferEditPos--;
for(i=CmdlineBufferEditPos; i<CmdlineBufferLength; i++)
CmdlineBuffer[i] = CmdlineBuffer[i+1];
// repaint
cmdlineRepaint();
// add space to clear leftover characters
cmdlineOutputFunc(' ');
// reposition cursor
for(i=CmdlineBufferEditPos; i<(CmdlineBufferLength+1); i++)
cmdlineOutputFunc(ASCII_BS);
}
}
else
{
// else, ring the bell
cmdlineOutputFunc(ASCII_BEL);
}
}
// else if(c == ASCII_DEL)
// {
// // not yet handled
// }
else if(c == ASCII_ESC)
{
CmdlineInputVT100State = 1;
}
}
void
UserLogin (char Temp)
{
if (UserLoginStatus == WaitForUsername)
{
InputBufferUserPos = 0;
UserLoginStatus = EnterUsername;
Temp = '\r';
bzero (InputBufferUser, InputBufferLen);
bzero (InputBufferPass, InputBufferLen);
}
if (UserLoginStatus == EnterUsername)
{
if (Temp == '\r')
{
if (InputBufferUserPos == 0)
DumpStringToUSB ("\n\rUsername>");
else
UserLoginStatus = WaitForPassword;
}
else if (InputBufferUserPos < InputBufferLen)
{
InputBufferUser[InputBufferUserPos++] = Temp;
vSendByte (Temp);
}
}
if (UserLoginStatus == WaitForPassword)
{
InputBufferPassPos = 0;
UserLoginStatus = EnterPassword;
Temp = '\r';
}
if (UserLoginStatus == EnterPassword)
{
if (Temp == '\r')
{
if (InputBufferPassPos == 0)
DumpStringToUSB ("\n\rPassword>");
else
{
/*todo: check user dada */
if (InputBufferUser[0] == 'r' && InputBufferPass[0] == 'r')
{
/*todo: read/set User rights */
UserLoginStatus = LoggedIn;
}
else
UserLoginStatus = LoggedOut;
}
}
else if (InputBufferPassPos < InputBufferLen)
{
InputBufferPass[InputBufferPassPos++] = Temp;
vSendByte (Temp);
}
}
if (UserLoginStatus == LoggedIn)
{
DumpStringToUSB ("\n\r\n\r\n\rWelcome!\n\r\n\r");
cmdlineRepaint ();
}
if (UserLoginStatus == LoggedOut)
{
DumpStringToUSB ("\n\r\n\r\n\rGood Bye, have a nive day!\n\r\n\r");
UserLoginStatus = WaitForUsername;
}
}