void cmdlinePrintError(void)
{
u08 * ptr;
rprintf("\"",cmd_prompt_index);
// print a notice header
// (u08*) cast used to avoid compiler warning
ptr = (u08*)CmdlineNotice;
while(pgm_read_byte(ptr)) cmdlineOutputFunc( pgm_read_byte(ptr++) );
// print the offending command
ptr = CmdlineBuffer;
while((*ptr) && (*ptr != ' ')) cmdlineOutputFunc(*ptr++);
cmdlineOutputFunc(':');
cmdlineOutputFunc(' ');
// print the not-found message
// (u08*) cast used to avoid compiler warning
ptr = (u08*)CmdlineCmdNotFound;
while(pgm_read_byte(ptr)) cmdlineOutputFunc( pgm_read_byte(ptr++) );
rprintf("\"");
cmdlinePrintPromptEnd();
}
void cmdlineRepaint(void)
{
u08* ptr;
u08 i;
// carriage return
cmdlineOutputFunc(ASCII_CR);
// print fresh prompt
cmdlinePrintPrompt();
// print the new command line buffer
i = CmdlineBufferLength;
ptr = CmdlineBuffer;
while(i--) cmdlineOutputFunc(*ptr++);
}
void cmdlinePrintError(void)
{
uint8_t * ptr;
// print a notice header
// (uint8_t*) cast used to avoid compiler warning
ptr = (uint8_t*)CmdlineNotice;
while(pgm_read_byte(ptr)) cmdlineOutputFunc( pgm_read_byte(ptr++) );
// print the offending command
ptr = CmdlineBuffer;
while((*ptr) && (*ptr != ' ')) cmdlineOutputFunc(*ptr++);
cmdlineOutputFunc(':');
cmdlineOutputFunc(' ');
// print the not-found message
// (uint8_t*) cast used to avoid compiler warning
ptr = (uint8_t*)CmdlineCmdNotFound;
while(pgm_read_byte(ptr)) cmdlineOutputFunc( pgm_read_byte(ptr++) );
cmdlineOutputFunc('\r');
cmdlineOutputFunc('\n');
}
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 cmdlinePrintPrompt(void)
{
// print a new command prompt
u08* ptr = CmdlinePrompt;
while(pgm_read_byte(ptr)) cmdlineOutputFunc( pgm_read_byte(ptr++) );
}