// parse the command line options
internal OptionState ParseOption(string option)
{
string arg = option.ToUpperInvariant();
if (arg.StartsWith("OUT:", StringComparison.Ordinal))
{
outName = option.Substring(4);
if (outName.Equals("-"))
{
msgWrtr = Console.Error;
}
}
else if (arg.StartsWith("FRAME:", StringComparison.Ordinal))
{
userFrame = arg.Substring(6);
}
else if (arg.Equals("HELP", StringComparison.Ordinal) || arg.Equals("?"))
{
return(OptionState.needUsage);
}
else if (arg.Equals("ERRORSTOCONSOLE", StringComparison.Ordinal))
{
errorsToConsole = true;
}
else if (arg.Contains("CODEPAGE") && (arg.Contains("HELP") || arg.Contains("?")))
{
return(OptionState.needCodepageHelp);
}
else if (arg.StartsWith("CODEPAGE:", StringComparison.Ordinal))
{
fallbackCodepage = CodePageHandling.GetCodePage(option);
}
else
{
bool negate = arg.StartsWith("NO", StringComparison.Ordinal);
if (negate)
{
arg = arg.Substring(2);
}
if (arg.Equals("CHECK", StringComparison.Ordinal))
{
checkOnly = !negate;
}
else if (arg.StartsWith("CASEINSEN", StringComparison.Ordinal))
{
caseAgnostic = !negate;
}
else if (arg.StartsWith("LIST", StringComparison.Ordinal))
{
listing = !negate;
}
else if (arg.Equals("SUMMARY", StringComparison.Ordinal))
{
summary = !negate;
}
else if (arg.Equals("STACK", StringComparison.Ordinal))
{
stack = !negate;
}
else if (arg.Equals("MINIMIZE", StringComparison.Ordinal))
{
minimize = !negate;
}
else if (arg.Equals("VERSION", StringComparison.Ordinal))
{
emitVer = !negate;
}
else if (arg.Equals("PARSEONLY", StringComparison.Ordinal))
{
parseOnly = !negate;
}
else if (arg.StartsWith("PERSISTBUFF", StringComparison.Ordinal))
{
persistBuff = !negate;
}
else if (arg.Equals("PARSER", StringComparison.Ordinal))
{
hasParser = !negate;
}
else if (arg.Equals("BABEL", StringComparison.Ordinal))
{
babel = !negate;
}
else if (arg.Equals("FILES", StringComparison.Ordinal))
{
files = !negate;
}
else if (arg.StartsWith("EMBEDBUFF", StringComparison.Ordinal))
{
embedBuffers = !negate;
}
else if (arg.Equals("INFO", StringComparison.Ordinal))
{
emitInfo = !negate;
}
else if (arg.Equals("UTF8DEFAULT", StringComparison.Ordinal)) // Deprecated, compatability only.
{
if (negate)
{
fallbackCodepage = rawCP;
}
else
{
fallbackCodepage = utf8CP;
}
}
else if (arg.Equals("COMPRESSMAP", StringComparison.Ordinal))
{
compressMap = !negate;
compressMapExplicit = true;
}
else if (arg.Equals("COMPRESSNEXT", StringComparison.Ordinal))
{
compressNext = !negate;
//compressNextExplicit = true;
}
else if (arg.Equals("COMPRESS", StringComparison.Ordinal))
{
compressMap = !negate;
compressNext = !negate;
compressMapExplicit = true;
//compressNextExplicit = true;
}
else if (arg.Equals("SQUEEZE", StringComparison.Ordinal))
{
// Compress both map and next-state
// but do not use two-level compression
// ==> trade time for space.
squeeze = !negate;
compressMap = !negate;
compressNext = !negate;
compressMapExplicit = true;
//compressNextExplicit = true;
}
else if (arg.Equals("UNICODE", StringComparison.Ordinal))
{
// Have to do some checks here. If an attempt is made to
// set (no)unicode after the alphabet size has been set
// it is a command line or inline option error.
int cardinality = (negate ? asciiCardinality : unicodeCardinality);
useUnicode = !negate;
if (targetSymCardinality == notSet || targetSymCardinality == cardinality)
{
targetSymCardinality = cardinality;
}
else
{
return(OptionState.alphabetLocked);
}
if (useUnicode)
{
charClasses = true;
if (!compressMapExplicit)
{
compressMap = true;
}
}
}
else if (arg.Equals("VERBOSE", StringComparison.Ordinal))
{
verbose = !negate;
if (verbose)
{
emitVer = true;
}
}
else if (arg.Equals("CLASSES", StringComparison.Ordinal))
{
if (negate && useUnicode)
{
return(OptionState.inconsistent);
}
charClasses = !negate;
}
else
{
return(OptionState.errors);
}
}
return(OptionState.clear);
}
public Enumerator(Stream file, string codepage)
{
SetSource(file, CodePageHandling.GetCodePage(codepage));
}
