public static string[] ReadCommandLineArguments(this string text,
TextualArgumentOptions options = Default)
{
using (var reader = new StringReader(text))
{
var list = new List <string>();
foreach (var arg in ReadCommandLineArguments(reader, options))
{
list.Add(arg);
}
return(list.ToArray());
}
}
public static IEnumerable <string> ReadCommandLineArguments(this TextReader reader,
TextualArgumentOptions options = Default)
{
string argument;
for (;;)
{
argument = ReadCommandLineArgument(reader, options);
if (argument == null)
{
yield break;
}
yield return(argument);
}
}
public static string ReadCommandLineArgument(this TextReader reader,
TextualArgumentOptions options = Default)
{
if (!options.IsValid())
throw new ArgumentOutOfRangeException(nameof(options));
int cp;
char c;
for (;;)
{
cp = reader.Read();
if (cp < 0) return null;
c = (char)cp;
if (!char.IsWhiteSpace(c))
break;
}
char? quote = null;
var useESLike = options.Has(EnableEcmaScriptLike);
var fullyQuoted = (c == RegularQuoteChar || useESLike && c == ESLikeAdditionalQuoteChar);
var sb = new StringBuilder();
while (cp >= 0)
{
c = (char)cp;
switch (c)
{
case ESLikeAdditionalQuoteChar:
if (useESLike)
goto case RegularQuoteChar;
goto default;
case RegularQuoteChar:
if (c == quote)
quote = null;
else
quote = c;
break;
case '\\':
var shouldEscape = false;
switch (options)
{
case MixCLikeEscape:
case MixEcmaScriptLikeEscape:
shouldEscape = true;
break;
case MixCLikeEscapeOnlyQuoted:
case MixEcmaScriptLikeEscapeOnlyQuoted:
shouldEscape = quote.HasValue;
break;
case MixCLikeEscapeOnlyFullyQuoted:
case MixEcmaScriptLikeEscapeOnlyFullyQuoted:
shouldEscape = fullyQuoted && quote.HasValue;
break;
}
if (shouldEscape)
{
sb.Append('\\');
cp = reader.Read();
if (cp < 0) continue;
c = (char)cp;
}
break;
default:
if (!quote.HasValue && char.IsWhiteSpace(c))
{
cp = -1;
continue;
}
break;
}
sb.Append(c);
cp = reader.Read();
}
return sb.ToString();
}
public static string[] GetCommandLineArguments(
TextualArgumentOptions options = Default)
=> Environment.CommandLine.ReadCommandLineArguments(options);
public static string[] ReadCommandLineArguments(this string text,
TextualArgumentOptions options = Default)
{
using (var reader = new StringReader(text))
return ReadCommandLineArguments(reader, options).ToArray();
}
public static string[] ReadCommandLineArguments(this string text,
TextualArgumentOptions options = Default)
{
using (var reader = new StringReader(text))
{
var list = new List<string>();
foreach(var arg in ReadCommandLineArguments(reader, options))
list.Add(arg);
return list.ToArray();
}
}
public static string EvaluateCommandLineArgument(string argument,
TextualArgumentOptions options = Default)
{
if (!options.IsValid())
throw new ArgumentOutOfRangeException(nameof(options));
char? last = null;
char? quote = null;
var useESLike = options.Has(EnableEcmaScriptLike);
var fullyQuoted = (argument[0] == RegularQuoteChar || useESLike && argument[0] == ESLikeAdditionalQuoteChar);
var sb = new StringBuilder();
foreach (var c in argument)
{
if (last == '\\')
last = null;
else
{
switch (c)
{
case ESLikeAdditionalQuoteChar:
if (useESLike)
goto case RegularQuoteChar;
goto default;
case RegularQuoteChar:
if (c == quote)
quote = null;
else
quote = c;
if (c == last)
last = null;
else
{
last = c;
continue;
}
break;
case '\\':
var shouldEscape = false;
switch (options)
{
case MixCLikeEscape:
case MixEcmaScriptLikeEscape:
shouldEscape = true;
break;
case MixCLikeEscapeOnlyQuoted:
case MixEcmaScriptLikeEscapeOnlyQuoted:
shouldEscape = quote.HasValue;
break;
case MixCLikeEscapeOnlyFullyQuoted:
case MixEcmaScriptLikeEscapeOnlyFullyQuoted:
shouldEscape = fullyQuoted && quote.HasValue;
break;
}
if (shouldEscape)
{
last = '\\';
continue;
}
break;
default:
last = null;
break;
}
}
sb.Append(c);
}
return sb.ToString();
}
public static IEnumerable<string> ReadCommandLineArguments(this TextReader reader,
TextualArgumentOptions options = Default)
{
string argument;
for (;;)
{
argument = ReadCommandLineArgument(reader, options);
if (argument == null) yield break;
yield return argument;
}
}
public static bool IsValid(this TextualArgumentOptions value) => TextualArgumentOptions.MixEcmaScriptLikeEscapeOnlyFullyQuoted.Has(value);
public void ForEval(TextualArgumentOptions options, string expected, string input)
{
Assert.Equal(expected, TextualArgumentUtility.EvaluateCommandLineArgument(input, options));
}
public static string[] ReadCommandLineArguments(this string text,
TextualArgumentOptions options = Default)
{
using (var reader = new StringReader(text))
return(ReadCommandLineArguments(reader, options).ToArray());
}
public static string EvaluateCommandLineArgument(string argument,
TextualArgumentOptions options = Default)
{
if (!options.IsValid())
{
throw new ArgumentOutOfRangeException(nameof(options));
}
char?last = null;
char?quote = null;
var useESLike = options.Has(EnableEcmaScriptLike);
var fullyQuoted = (argument[0] == RegularQuoteChar || useESLike && argument[0] == ESLikeAdditionalQuoteChar);
var sb = new StringBuilder();
foreach (var c in argument)
{
if (last == '\\')
{
last = null;
}
else
{
switch (c)
{
case ESLikeAdditionalQuoteChar:
if (useESLike)
{
goto case RegularQuoteChar;
}
goto default;
case RegularQuoteChar:
if (c == quote)
{
quote = null;
}
else
{
quote = c;
}
if (c == last)
{
last = null;
}
else
{
last = c;
continue;
}
break;
case '\\':
var shouldEscape = false;
switch (options)
{
case MixCLikeEscape:
case MixEcmaScriptLikeEscape:
shouldEscape = true;
break;
case MixCLikeEscapeOnlyQuoted:
case MixEcmaScriptLikeEscapeOnlyQuoted:
shouldEscape = quote.HasValue;
break;
case MixCLikeEscapeOnlyFullyQuoted:
case MixEcmaScriptLikeEscapeOnlyFullyQuoted:
shouldEscape = fullyQuoted && quote.HasValue;
break;
}
if (shouldEscape)
{
last = '\\';
continue;
}
break;
default:
last = null;
break;
}
}
sb.Append(c);
}
return(sb.ToString());
}
public static string ReadCommandLineArgument(this TextReader reader,
TextualArgumentOptions options = Default)
{
if (!options.IsValid())
{
throw new ArgumentOutOfRangeException(nameof(options));
}
int cp;
char c;
for (;;)
{
cp = reader.Read();
if (cp < 0)
{
return(null);
}
c = (char)cp;
if (!char.IsWhiteSpace(c))
{
break;
}
}
char?quote = null;
var useESLike = options.Has(EnableEcmaScriptLike);
var fullyQuoted = (c == RegularQuoteChar || useESLike && c == ESLikeAdditionalQuoteChar);
var sb = new StringBuilder();
while (cp >= 0)
{
c = (char)cp;
switch (c)
{
case ESLikeAdditionalQuoteChar:
if (useESLike)
{
goto case RegularQuoteChar;
}
goto default;
case RegularQuoteChar:
if (c == quote)
{
quote = null;
}
else
{
quote = c;
}
break;
case '\\':
var shouldEscape = false;
switch (options)
{
case MixCLikeEscape:
case MixEcmaScriptLikeEscape:
shouldEscape = true;
break;
case MixCLikeEscapeOnlyQuoted:
case MixEcmaScriptLikeEscapeOnlyQuoted:
shouldEscape = quote.HasValue;
break;
case MixCLikeEscapeOnlyFullyQuoted:
case MixEcmaScriptLikeEscapeOnlyFullyQuoted:
shouldEscape = fullyQuoted && quote.HasValue;
break;
}
if (shouldEscape)
{
sb.Append('\\');
cp = reader.Read();
if (cp < 0)
{
continue;
}
c = (char)cp;
}
break;
default:
if (!quote.HasValue && char.IsWhiteSpace(c))
{
cp = -1;
continue;
}
break;
}
sb.Append(c);
cp = reader.Read();
}
return(sb.ToString());
}
public static string[] GetCommandLineArguments(
TextualArgumentOptions options = Default)
=> Environment.CommandLine.ReadCommandLineArguments(options);
