/// <summary>
/// This routine replaces all place-holders in the given command line string.
/// </summary>
private string ReplacePlaceholders(string CmdLineText)
{
string MethodName = "Pipe.ReplacePlaceholders";
char Ch;
int CharPos = 0;
int BegPosOfPlaceHolder = 0;
int PosOfNum = 0;
string FilterSwitchID = string.Empty;
string PipeSwitchID = string.Empty;
int FirstIndex = 0;
int LastIndex = 0;
bool Done = false;
string TempStr;
LogWrite(MethodName + ": Raw Cmdline = \"" + CmdLineText + "\"");
int State = 0;
bool inString = false;
ToState(ref State, 10, MethodName);
do
{
Ch = GetNextChar(CmdLineText, ref CharPos, "CmdLine", ref inString);
switch (State)
{
case 10:
// Looking for opening bracket "[".
if (Ch == '[')
{
BegPosOfPlaceHolder = CharPos - 1;
ToState(ref State, 20, MethodName);
}
else
{
if (Ch == '\0')
{
Done = true;
}
}
break;
case 20:
// Looking either for a positional index's first digit
// or a slash (/).
if (Char.IsDigit(Ch))
{
// Must be a positional placeholder.
PosOfNum = CharPos - 1;
ToState(ref State, 30, MethodName);
}
else
{
if (Ch == '/')
{
// Must be a switch placeholder.
ToState(ref State, 60, MethodName);
}
else
{
if (Ch == '\0')
{
Done = true;
}
else
{
// Character not expected. Backtrack a character:
CharPos--;
ToState(ref State, 10, MethodName);
}
}
}
break;
case 30:
// Looking for the index's remaining digits.
if (Ch == '\0')
{
Done = true;
}
else
{
if (Char.IsDigit(Ch))
{
// Do nothing
}
else
{
if (Ch == ']')
{
// Located a simple positional place holder. Get the index:
FirstIndex = Int32.Parse(CmdLineText.Substring(PosOfNum, CharPos - PosOfNum - 1)) - 1;
// Get the argument:
try
{
TempStr = GetArg(FirstIndex, inString);
}
catch (PipeWrenchCompileException ex)
{
ex.Data.Add("CmdLine", CmdLineText);
ex.Data.Add("CharPos", CharPos);
throw ex;
}
// Delete the place holder:
CmdLineText = CmdLineText.Remove(BegPosOfPlaceHolder, CharPos - BegPosOfPlaceHolder);
CharPos -= CharPos - BegPosOfPlaceHolder;
// Insert the argument:
CmdLineText = CmdLineText.Insert(BegPosOfPlaceHolder, TempStr);
CharPos += TempStr.Length;
ToState(ref State, 10, MethodName);
}
else
{
if (Ch == '-')
{
// Matching a positional "range" placeholder. Get the first index:
FirstIndex = Int32.Parse(CmdLineText.Substring(PosOfNum, CharPos - PosOfNum - 1)) - 1;
ToState(ref State, 40, MethodName);
}
else
{
// Character not expected. Backtrack a character:
CharPos--;
ToState(ref State, 10, MethodName);
}
}
}
}
break;
case 40:
// Looking for last index's first digit.
if (Ch == '\0')
{
Done = true;
}
else
{
if (Ch == ']')
{
// Located an infinite range place holder. Set
// the last index to indicate an infinite range:
LastIndex = CmdLine.ArgCount - 1;
// Process the place holder:
ReplacePlaceHolderRange(FirstIndex, LastIndex, BegPosOfPlaceHolder,
ref CharPos, ref CmdLineText, inString);
ToState(ref State, 10, MethodName);
}
else
{
if (Char.IsDigit(Ch))
{
PosOfNum = CharPos - 1;
ToState(ref State, 50, MethodName);
}
else
{
// Character not expected. Backtrack a character:
CharPos--;
ToState(ref State, 10, MethodName);
}
}
}
break;
case 50:
// Looking for last index's remaining digits.
if (Ch == '\0')
{
Done = true;
}
else
{
if (Ch == ']')
{
// Located a closed range place holder. Get the last index:
LastIndex = Int32.Parse(CmdLineText.Substring(PosOfNum, CharPos - PosOfNum - 1)) - 1;
// Process the place holder:
ReplacePlaceHolderRange(FirstIndex, LastIndex, BegPosOfPlaceHolder,
ref CharPos, ref CmdLineText, inString);
ToState(ref State, 10, MethodName);
}
else
{
if (Char.IsDigit(Ch))
{
// Do nothing
}
else
{
// Character not expected. Backtrack a character:
CharPos--;
ToState(ref State, 10, MethodName);
}
}
}
break;
case 60:
// Looking for the filter's switch identifier.
if (Ch == '\0')
{
Done = true;
}
else
{
if (Char.IsLetter(Ch))
{
// Got the switch ID.
FilterSwitchID = Ch.ToString();
ToState(ref State, 70, MethodName);
}
else
{
// Character not expected. Backtrack a character:
CharPos--;
ToState(ref State, 10, MethodName);
}
}
break;
case 70:
// Looking for an equal sign character.
if (Ch == '\0')
{
Done = true;
}
else
{
if (Ch == '=')
{
// Got the equal sign character.
ToState(ref State, 80, MethodName);
}
else
{
// Character not expected. Backtrack a character:
CharPos--;
ToState(ref State, 10, MethodName);
}
}
break;
case 80:
// Looking for either a pipe's switch identifier or the
// first digit of a positional parameter index (a number).
if (Ch == '\0')
{
Done = true;
}
else
{
if (Char.IsLetter(Ch))
{
// Got the switch ID.
PipeSwitchID = Ch.ToString();
ToState(ref State, 90, MethodName);
}
else
{
if (Char.IsDigit(Ch))
{
// Got the first digit of a positional index.
PosOfNum = CharPos - 1;
ToState(ref State, 100, MethodName);
}
else
{
// Character not expected. Backtrack a character:
CharPos--;
ToState(ref State, 10, MethodName);
}
}
}
break;
case 90:
// Looking for closing bracket character.
if (Ch == '\0')
{
Done = true;
}
else
{
if (Ch == ']')
{
// Located a switch placeholder mapped to a switch parameter.
// Delete the place holder:
CmdLineText = CmdLineText.Remove(BegPosOfPlaceHolder, CharPos - BegPosOfPlaceHolder);
CharPos -= CharPos - BegPosOfPlaceHolder;
int i = CmdLine.GetSwitchIndex("/" + PipeSwitchID);
if (i > -1)
{
// The switch was passed to the pipe.
TempStr = string.Empty;
if (CmdLine.GetSwitch(i).Value != null)
{
// Is numeric or string switch. Insert the
// switch's value into the command line:
TempStr = CmdLine.GetSwitch(i).Value.ToString();
if (CmdLine.GetSwitch(i).Value is string)
{
// Quote the string:
TempStr = "'" + TempStr + "'";
}
}
// Insert the replacement text:
CmdLineText = CmdLineText.Insert(BegPosOfPlaceHolder, "/" + FilterSwitchID + TempStr);
CharPos += TempStr.Length + 2;
}
ToState(ref State, 10, MethodName);
}
else
{
// Character not expected. Backtrack a character:
CharPos--;
ToState(ref State, 10, MethodName);
}
}
break;
case 100:
// Looking for the remaining digits of a positional index.
if (Ch == '\0')
{
Done = true;
}
else
{
if (Char.IsDigit(Ch))
{
// Do nothing
}
else
{
if (Ch == ']')
{
// Located a switch placeholder mapped to
// a positional parameter. Get the index:
FirstIndex = Int32.Parse(CmdLineText.Substring(PosOfNum, CharPos - PosOfNum - 1)) - 1;
// Get the argument:
try
{
TempStr = GetArg(FirstIndex, inString);
}
catch (PipeWrenchCompileException ex)
{
ex.Data.Add("CmdLine", CmdLineText);
ex.Data.Add("CharPos", CharPos);
throw ex;
}
// Delete the place holder:
CmdLineText = CmdLineText.Remove(BegPosOfPlaceHolder, CharPos - BegPosOfPlaceHolder);
CharPos -= CharPos - BegPosOfPlaceHolder;
// Insert the argument:
CmdLineText = CmdLineText.Insert(BegPosOfPlaceHolder, "/" + FilterSwitchID + TempStr);
CharPos += TempStr.Length;
ToState(ref State, 10, MethodName);
}
else
{
// Character not expected. Backtrack a character:
CharPos--;
ToState(ref State, 10, MethodName);
}
}
}
break;
}
}while (!Done);
LogWrite(MethodName + ": Translated Cmdline = \"" + CmdLineText + "\"");
return(CmdLineText);
}