// If the specified parameter character is found, fetch 'value' and set 'seen'. Otherwise leave value and seen alone.
void GCodeBuffer::TryGetIValue(char c, int32_t& val, bool& seen)
{
if (Seen(c))
{
val = GetIValue();
seen = true;
}
}
// Add a byte to the code being assembled. If false is returned, the code is
// not yet complete. If true, it is complete and ready to be acted upon.
bool GCodeBuffer::Put(char c)
{
if (c == ';')
{
inComment = true;
}
else if (c == '\n' || c == '\r' || c == 0)
{
gcodeBuffer[gcodePointer] = 0;
if (reprap.Debug(moduleGcodes) && gcodeBuffer[0] != 0 && !writingFileDirectory) // Don't bother with blank/comment lines
{
reprap.GetPlatform()->MessageF(DEBUG_MESSAGE, "%s: %s\n", identity, gcodeBuffer);
}
// Deal with line numbers and checksums
if (Seen('*'))
{
const int csSent = GetIValue();
const int csHere = CheckSum();
if (csSent != csHere)
{
if (Seen('N'))
{
snprintf(gcodeBuffer, GCODE_LENGTH, "M998 P%ld", GetIValue());
}
Init();
return true;
}
// Strip out the line number and checksum
gcodePointer = 0;
while (gcodeBuffer[gcodePointer] != ' ' && gcodeBuffer[gcodePointer] != 0)
{
gcodePointer++;
}
// Anything there?
if (gcodeBuffer[gcodePointer] == 0)
{
// No...
gcodeBuffer[0] = 0;
Init();
return false;
}
// Yes...
gcodePointer++;
int gp2 = 0;
while (gcodeBuffer[gcodePointer] != '*' && gcodeBuffer[gcodePointer] != 0)
{
gcodeBuffer[gp2] = gcodeBuffer[gcodePointer++];
gp2++;
}
gcodeBuffer[gp2] = 0;
}
else if ((checksumRequired && machineState->previous == nullptr) || IsEmpty())
{
// Checksum not found or buffer empty - cannot do anything
gcodeBuffer[0] = 0;
Init();
return false;
}
Init();
bufferState = GCodeBufferState::ready;
return true;
}
else if (!inComment || writingFileDirectory)
{
gcodeBuffer[gcodePointer++] = c;
if (gcodePointer >= (int)GCODE_LENGTH)
{
reprap.GetPlatform()->MessageF(GENERIC_MESSAGE, "Error: G-Code buffer '$s' length overflow\n", identity);
gcodePointer = 0;
gcodeBuffer[0] = 0;
}
}
return false;
}
bool GCodeBuffer::Put(char c)
{
bool result = false;
gcodeBuffer[gcodePointer] = c;
if(c == ';')
inComment = true;
if(c == '\n' || !c)
{
gcodeBuffer[gcodePointer] = 0;
Init();
if(reprap.Debug() && gcodeBuffer[0]) // Don't bother with blank/comment lines
{
platform->Message(HOST_MESSAGE, identity);
platform->Message(HOST_MESSAGE, gcodeBuffer);
platform->Message(HOST_MESSAGE, "\n");
}
// Deal with line numbers and checksums
if(Seen('*'))
{
int csSent = GetIValue();
int csHere = CheckSum();
Seen('N');
if(csSent != csHere)
{
snprintf(gcodeBuffer, GCODE_LENGTH, "M998 P%d", GetIValue());
Init();
result = true;
return result;
}
// Strip out the line number and checksum
while(gcodeBuffer[gcodePointer] != ' ' && gcodeBuffer[gcodePointer])
gcodePointer++;
// Anything there?
if(!gcodeBuffer[gcodePointer])
{
// No...
gcodeBuffer[0] = 0;
Init();
result = true;
return result;
}
// Yes...
gcodePointer++;
int gp2 = 0;
while(gcodeBuffer[gcodePointer] != '*' && gcodeBuffer[gcodePointer])
{
gcodeBuffer[gp2] = gcodeBuffer[gcodePointer++];
gp2++;
}
gcodeBuffer[gp2] = 0;
Init();
}
result = true;
} else
{
if(!inComment)
gcodePointer++;
}
if(gcodePointer >= GCODE_LENGTH)
{
platform->Message(HOST_MESSAGE, "G Code buffer length overflow.\n");
gcodePointer = 0;
gcodeBuffer[0] = 0;
}
return result;
}
