/**
* Parses the given command-line.
*
* @param commandLine The command-line.
* @return The parsed command line.
* @throws org.gradle.cli.CommandLineArgumentException On parse failure.
*/
public ParsedCommandLine parse(Iterable<String> commandLine) throws CommandLineArgumentException {
ParsedCommandLine parsedCommandLine =
new ParsedCommandLine(new HashSet<CommandLineOption>(optionsByString.values()));
ParserState parseState = new BeforeFirstSubCommand(parsedCommandLine);
for (String arg : commandLine) {
if (parseState.maybeStartOption(arg)) {
if (arg.equals("--")) {
parseState = new AfterOptions(parsedCommandLine);
} else if (arg.matches("--[^=]+")) {
OptionParserState parsedOption = parseState.onStartOption(arg, arg.substring(2));
parseState = parsedOption.onStartNextArg();
} else if (arg.matches("--[^=]+=.*")) {
int endArg = arg.indexOf('=');
OptionParserState parsedOption = parseState.onStartOption(arg, arg.substring(2, endArg));
parseState = parsedOption.onArgument(arg.substring(endArg + 1));
} else if (arg.matches("-[^=]=.*")) {
OptionParserState parsedOption = parseState.onStartOption(arg, arg.substring(1, 2));
parseState = parsedOption.onArgument(arg.substring(3));
} else {
assert arg.matches("-[^-].*");
String option = arg.substring(1);
if (optionsByString.containsKey(option)) {
OptionParserState parsedOption = parseState.onStartOption(arg, option);
parseState = parsedOption.onStartNextArg();
} else {
String option1 = arg.substring(1, 2);
OptionParserState parsedOption;
if (optionsByString.containsKey(option1)) {
parsedOption = parseState.onStartOption("-" + option1, option1);
if (parsedOption.getHasArgument()) {
parseState = parsedOption.onArgument(arg.substring(2));
} else {
parseState = parsedOption.onComplete();
for (int i = 2; i < arg.length(); i++) {
String optionStr = arg.substring(i, i + 1);
parsedOption = parseState.onStartOption("-" + optionStr, optionStr);
parseState = parsedOption.onComplete();
}
}
} else {
if (allowUnknownOptions) {
// if we are allowing unknowns, just pass through the whole arg
parsedOption = parseState.onStartOption(arg, option);
parseState = parsedOption.onComplete();
} else {
// We are going to throw a CommandLineArgumentException below, but want the message
// to reflect that we didn't recognise the first char (i.e. the option specifier)
parsedOption = parseState.onStartOption("-" + option1, option1);
parseState = parsedOption.onComplete();
}
}
}
}
} else {
parseState = parseState.onNonOption(arg);
}
}
parseState.onCommandLineEnd();
return parsedCommandLine;
}
@Override
public ParserState onNonOption(String arg) {
return option.onArgument(arg);
}