113 lines
2.9 KiB
C
113 lines
2.9 KiB
C
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/******************************************************************************
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* Copyright 2010 Duane Merrill
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* For more information, see our Google Code project site:
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* http://code.google.com/p/back40computing/
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*
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* Thanks!
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******************************************************************************/
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#ifndef COMMAND_LINE_ARGS_H
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#define COMMAND_LINE_ARGS_H
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/******************************************************************************
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* Command-line parsing
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******************************************************************************/
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#include <map>
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#include <algorithm>
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#include <string>
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#include <sstream>
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class CommandLineArguments
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{
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protected:
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std::map<std::string, std::string> pairs;
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public:
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// Constructor
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CommandLineArguments(int argc, char **argv)
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{
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using namespace std;
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for (int i = 1; i < argc; i++)
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{
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string arg = argv[i];
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if ((arg[0] != '-') || (arg[1] != '-')) {
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continue;
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}
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string::size_type pos;
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string key, val;
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if ((pos = arg.find( '=')) == string::npos) {
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key = string(arg, 2, arg.length() - 2);
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val = "";
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} else {
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key = string(arg, 2, pos - 2);
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val = string(arg, pos + 1, arg.length() - 1);
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}
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pairs[key] = val;
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}
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}
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bool CheckCmdLineFlag(const char* arg_name)
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{
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using namespace std;
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map<string, string>::iterator itr;
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if ((itr = pairs.find(arg_name)) != pairs.end()) {
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return true;
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}
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return false;
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}
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template <typename T>
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void GetCmdLineArgument(const char *arg_name, T &val);
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int ParsedArgc()
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{
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return pairs.size();
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}
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};
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template <typename T>
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void CommandLineArguments::GetCmdLineArgument(const char *arg_name, T &val)
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{
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using namespace std;
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map<string, string>::iterator itr;
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if ((itr = pairs.find(arg_name)) != pairs.end()) {
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istringstream strstream(itr->second);
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strstream >> val;
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}
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}
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template <>
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void CommandLineArguments::GetCmdLineArgument<char*>(const char* arg_name, char* &val)
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{
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using namespace std;
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map<string, string>::iterator itr;
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if ((itr = pairs.find(arg_name)) != pairs.end()) {
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string s = itr->second;
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val = (char*) malloc(sizeof(char) * (s.length() + 1));
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strcpy(val, s.c_str());
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} else {
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val = NULL;
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}
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}
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#endif //COMMAND_LINE_ARGS_H
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