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/* -*- Mode: C++; tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*- */
/*
* Copyright 2011 Couchbase, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "config.h"
#include <getopt.h>
#include <vector>
#include <sstream>
#include <iostream>
#include "commandlineparser.h"
using namespace std;
CommandLineOption::CommandLineOption(char s, const char *l, bool arg, const char *d) :
shortopt(s), longopt(strdup(l)), hasArgument(arg), description(d),
found(false),
argument(NULL)
{
// Empty
}
CommandLineOption::~CommandLineOption()
{
free(longopt);
}
void CommandLineOption::set(char *arg)
{
argument = arg;
}
Getopt &Getopt::addOption(CommandLineOption *option)
{
options.push_back(option);
return *this;
}
void Getopt::usage(const char *name) const
{
vector<CommandLineOption *>::const_iterator iter;
cerr << "Usage: " << name << " [options] [arguments]" << endl << endl;
for (iter = options.begin(); iter != options.end(); ++iter) {
string arg;
if ((*iter)->hasArgument) {
arg = " val";
}
// @todo fix a nice wrap of lines...
cerr << "\t-" << (*iter)->shortopt << arg << "\t"
<< (*iter)->description << " (--" << (*iter)->longopt << ")"
<< endl;
}
cerr << endl;
}
bool Getopt::parse(int argc, char **argv)
{
optind = 0;
optarg = NULL;
struct option opts[256];
memset(opts, 0, 256 * sizeof(*opts));
stringstream ss;
vector<CommandLineOption *>::iterator iter;
int ii = 0;
for (iter = options.begin(); iter != options.end(); ++iter, ++ii) {
opts[ii].name = (*iter)->longopt;
opts[ii].has_arg = (*iter)->hasArgument ? required_argument : no_argument;
opts[ii].val = (*iter)->shortopt;
ss << (*iter)->shortopt;
if ((*iter)->hasArgument) {
ss << ":";
}
}
optarg = NULL;
optind = 0;
string shortopts = ss.str();
int c;
while ((c = getopt_long(argc, argv, shortopts.c_str(), opts, NULL)) != -1) {
for (iter = options.begin(); iter != options.end(); ++iter, ++ii) {
if ((*iter)->shortopt == c) {
(*iter)->set(optarg);
(*iter)->found = true;
break;
}
}
if (iter == options.end()) {
return false;
}
}
for (ii = optind; ii < argc; ++ii) {
arguments.push_back(argv[ii]);
}
return true;
}
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