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#include "CommandArgs.h"
CommandArgs::CommandArgs() {
}
CommandArgs::~CommandArgs() {
}
void CommandArgs::addArgument(int shortarg, string const &longarg, Parameter argument, string const &help) {
Arg arg;
arg.shortarg = shortarg;
arg.argument = argument;
arg.longarg = longarg;
arg.help = help;
args.push_back(arg);
}
void CommandArgs::setHelp(int shortarg, string const &help) {
for (vector<CommandArgs::Arg>::iterator i = args.begin(); i != args.end(); i++)
if ((*i).shortarg == shortarg) {
(*i).help = help;
return;
}
throw exception(string("couldn't set help for non-existent option '") + (char)shortarg + "'");
}
bool CommandArgs::iterator::get() {
if (!argv || arg >= argc) return false;
_type = Unknown;
_argument = 0;
value = 0;
// continuing existing short parameter list
if (inshort) {
char c = argv[arg][inshort];
for (vector<CommandArgs::Arg>::iterator i = cmdarg->args.begin(); i != cmdarg->args.end(); i++) {
CommandArgs::Arg const &a = (*i);
if (a.shortarg == c) {
_type = Argument;
// option with a parameter, but still more short args to go
if (a.argument == Required && argv[arg][inshort + 1] != 0) {
value = argv[arg] + inshort + 1;
inshort = 0;
_argument = c;
arg++;
return true;
} else {
inshort++;
// next argument?
if (argv[arg][inshort] == 0) {
inshort = 0;
arg++;
// optional argument present?
if (arg < argc && a.argument == Optional && argv[arg][0] != '-') {
value = argv[arg];
arg++;
}
}
_argument = c;
if (a.argument == Required) {
if (arg >= argc)
throw exception(string("expected parameter to argument '-") + c + "'");
value = argv[arg++];
}
_type = Argument;
return true;
}
}
}
value = argv[arg++];
return true;
}
// check options
if (argv[arg][0] == '-') {
for (vector<CommandArgs::Arg>::iterator i = cmdarg->args.begin(); i != cmdarg->args.end(); i++) {
CommandArgs::Arg a = (*i);
// long arg?
if (argv[arg][1] == '-') {
if (!a.longarg.compare(argv[arg] + 2)) {
_argument = a.shortarg;
arg++;
if (a.argument == Required) {
if (arg >= argc)
throw exception(string("expected parameter to argument '--") + a.longarg + "'");
value = argv[arg++];
} else // optional argument present?
if (a.argument == Optional && arg < argc && argv[arg][0] != '-') {
value = argv[arg];
arg++;
}
_type = Argument;
return true;
}
// short arg?
} else {
if (a.shortarg == argv[arg][1]) {
char c = argv[arg][1];
if (a.argument == Required && argv[arg][2] != 0) {
_argument = c;
_type = Argument;
value = argv[arg] + 2;
inshort = 0;
arg++;
return true;
} else {
inshort = 2;
// next argument?
if (argv[arg][inshort] == 0) {
inshort = 0;
arg++;
// optional argument present?
if (arg < argc && a.argument == Optional && argv[arg][0] != '-') {
value = argv[arg];
arg++;
}
}
_argument = c;
if (a.argument == Required) {
if (arg >= argc)
throw exception(string("expected parameter to argument '") + c + "'");
value = argv[arg++];
}
_type = Argument;
return true;
}
}
}
}
value = argv[arg++];
return true;
} else {
_type = Unknown;
value = argv[arg++];
_argument = 0;
}
return true;
}
void CommandArgs::displayHelp(ostream &out, int termwidth) {
unsigned max = 0;
// calculate widest argument
for (vector<CommandArgs::Arg>::iterator i = args.begin(); i != args.end(); i++) {
Arg &arg = *i;
string tmp;
if (arg.help == "") continue;
if (arg.shortarg > 0) {
tmp += '-';
tmp += (char)arg.shortarg;
}
if (arg.longarg != "") {
if (tmp != "") tmp += ", ";
tmp += "--" + arg.longarg;
}
if (arg.argument == Required) {
tmp += " ARG";
} else
if (arg.argument == Optional) {
tmp += " [ARG]";
}
if (max < tmp.size()) max = tmp.size();
}
for (vector<CommandArgs::Arg>::iterator i = args.begin(); i != args.end(); i++) {
Arg &arg = *i;
string tmp;
if (arg.help == "") continue;
if (arg.shortarg > 0) {
tmp += '-';
tmp += (char)arg.shortarg;
}
if (arg.longarg != "") {
if (tmp != "") tmp += ", ";
tmp += "--" + arg.longarg;
}
if (arg.argument == Required) {
tmp += " ARG";
} else
if (arg.argument == Optional) {
tmp += " [ARG]";
}
out << tmp;
str::wraptext(out, arg.help, max + 2, tmp.size(), termwidth);
out << endl;
}
}
string const &CommandArgs::iterator::longOption() const {
assert(cmdarg);
for (vector<CommandArgs::Arg>::iterator i = cmdarg->args.begin(); !(i == cmdarg->args.end()); ++i)
if (_argument == (*i).shortarg)
return (*i).longarg;
throw exception("unknown option index '" + str::stringify(_argument) + "'");
}
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