/// <summary>
/// - Processes a character event into an Action that occurs while in the DcsParam state.
/// Events in this state will:
/// 1. Ignore C0 control characters
/// 2. Ignore Delete characters
/// 3. Collect DCS parameter data
/// 4. Enter DcsIntermediate if we see an intermediate
/// 5. Begin to ignore all remaining parameters when an invalid character is detected (DcsIgnore)
/// 6. Dispatch the Final character in preparation for parsing the data string
/// </summary>
/// <param name="ch"></param>
private void EventDCSParam(byte ch)
{
if (ASCIIChars.IsC0Code(ch))
{
this.ActionIgnore(ch);
}
else if (ASCIIChars.IsDelete(ch))
{
this.ActionIgnore(ch);
}
else if (ASCIIChars.IsNumericParamValue(ch) || ASCIIChars.IsParameterDelimiter(ch))
{
this.ActionParam(ch);
}
else if (ASCIIChars.IsIntermediate(ch))
{
this.ActionCollect(ch);
this.EnterDCSIntermediate();
}
else if (ASCIIChars.IsParameterInvalid(ch))
{
this.EnterDCSIgnore();
}
else
{
this.ActionDCSDispatch(ch);
}
}
/// <summary>
/// - Processes a character event into an Action that occurs while in the CsiEntry state.
/// Events in this state will:
/// 1. Execute C0 control characters
/// 2. Ignore Delete characters
/// 3. Collect Intermediate characters
/// 4. Begin to ignore all remaining parameters when an invalid character is detected (CsiIgnore)
/// 5. Store parameter data
/// 6. Collect Control Sequence Private markers
/// 7. Dispatch a control sequence with parameters for action
/// </summary>
/// <param name="ch"></param>
private void EventCSIEntry(byte ch)
{
if (ASCIIChars.IsC0Code(ch))
{
this.ActionExecute(ch);
}
else if (ASCIIChars.IsDelete(ch))
{
this.ActionIgnore(ch);
}
else if (ASCIIChars.IsIntermediate(ch))
{
this.ActionCollect(ch);
this.EnterCSIIntermediate();
}
else if (ASCIIChars.IsCSIInvalid(ch))
{
this.EnterCSIIgnore();
}
else if (ASCIIChars.IsNumericParamValue(ch) || ASCIIChars.IsParameterDelimiter(ch))
{
this.ActionParam(ch);
this.EnterCSIParam();
}
else if (ASCIIChars.IsCSIPrivateMarker(ch))
{
this.ActionCollect(ch);
this.EnterCSIParam();
}
else
{
this.ActionCSIDispatch(ch);
this.EnterGround();
}
}
/// <summary>
/// - Processes a character event into an Action that occurs while in the EscapeIntermediate state.
/// Events in this state will:
/// 1. Execute C0 control characters
/// 2. Ignore Delete characters
/// 3. Collect Intermediate characters
/// 4. Dispatch an Escape action.
/// </summary>
/// <param name="ch"></param>
private void EventEscapeIntermediate(byte ch)
{
if (ASCIIChars.IsC0Code(ch))
{
this.ActionExecute(ch);
}
else if (ASCIIChars.IsIntermediate(ch))
{
this.ActionCollect(ch);
}
else if (ASCIIChars.IsDelete(ch))
{
this.ActionIgnore(ch);
}
else if (this.isAnsiMode)
{
this.ActionEscDispatch(ch);
this.EnterGround();
}
else if (ASCIIChars.IsVt52CursorAddress(ch))
{
this.EnterVt52Param();
}
else
{
this.ActionVt52EscDispatch(ch);
this.EnterGround();
}
}
/// <summary>
/// 当状态变成Escape的时候触发
/// </summary>
/// <param name="ch"></param>
private void EventEscape(byte ch)
{
if (ASCIIChars.IsC0Code(ch))
{
this.ActionExecute(ch);
}
else if (ASCIIChars.IsDelete(ch))
{
this.ActionIgnore(ch);
}
else if (ASCIIChars.IsIntermediate(ch))
{
this.ActionCollect(ch);
this.EnterEscapeIntermediate();
}
else if (this.isAnsiMode)
{
if (ASCIIChars.IsCSIIndicator(ch))
{
// 0x5B，进入到了csi entry状态
this.EnterCSIEntry();
}
else if (ASCIIChars.IsOSCIndicator(ch))
{
// 0x5D，进入到了osc状态
this.EnterOSCParam();
}
else if (ASCIIChars.IsDCSIndicator(ch))
{
// 0x50，进入到了dcs状态
this.EnterDCSEntry();
}
else
{
this.ActionEscDispatch(ch);
this.EnterGround();
}
}
else if (ASCIIChars.IsVt52CursorAddress(ch))
{
// 判断是否是VT52模式下的移动光标指令, 当进入了VT52模式下才会触发
// 在VT52模式下只有移动光标的指令有参数，所以这里把移动光标的指令单独做处理
this.EnterVt52Param();
}
else
{
// 这里是其他的不带参数的VT52控制字符
this.ActionVt52EscDispatch(ch);
this.EnterGround();
}
}
/// <summary>
/// - Processes a character event into an Action that occurs while in the DcsIntermediate state.
/// Events in this state will:
/// 1. Ignore C0 control characters
/// 2. Ignore Delete characters
/// 3. Collect intermediate data.
/// 4. Begin to ignore all remaining intermediates when an invalid character is detected (DcsIgnore)
/// 5. Dispatch the Final character in preparation for parsing the data string
/// </summary>
/// <param name="ch"></param>
private void EventDCSIntermediate(byte ch)
{
if (ASCIIChars.IsC0Code(ch))
{
this.ActionIgnore(ch);
}
else if (ASCIIChars.IsDelete(ch))
{
this.ActionIgnore(ch);
}
else if (ASCIIChars.IsIntermediate(ch))
{
this.ActionCollect(ch);
}
else if (ASCIIChars.IsIntermediateInvalid(ch))
{
this.EnterDCSIgnore();
}
else
{
this.ActionDCSDispatch(ch);
}
}
/// <summary>
/// Processes a character event into an Action that occurs while in the CsiIgnore state.
/// Events in this state will:
/// 1. Execute C0 control characters
/// 2. Ignore Delete characters
/// 3. Collect Intermediate characters
/// 4. Begin to ignore all remaining parameters when an invalid character is detected (CsiIgnore)
/// 5. Return to Ground
/// </summary>
/// <param name="ch"></param>
private void EventCSIIgnore(byte ch)
{
if (ASCIIChars.IsC0Code(ch))
{
this.ActionExecute(ch);
}
else if (ASCIIChars.IsDelete(ch))
{
this.ActionIgnore(ch);
}
else if (ASCIIChars.IsIntermediate(ch))
{
this.ActionIgnore(ch);
}
else if (ASCIIChars.IsIntermediateInvalid(ch))
{
this.ActionIgnore(ch);
}
else
{
this.EnterGround();
}
}
