89 lines
2.1 KiB
C++
89 lines
2.1 KiB
C++
/*
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* Copyright (C) 2003-2014 The Music Player Daemon Project
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* http://www.musicpd.org
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License along
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*/
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#ifndef MPD_UTIL_OPTIONPARSER_HXX
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#define MPD_UTIL_OPTIONPARSER_HXX
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#include <assert.h>
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class OptionDef;
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/**
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* Command line option parser.
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*/
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class OptionParser
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{
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int argc;
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char **argv;
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char *option;
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char *option_raw;
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bool is_long;
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public:
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/**
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* Constructs #OptionParser.
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*/
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OptionParser(int _argc, char **_argv)
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: argc(_argc - 1), argv(_argv + 1),
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option(nullptr), option_raw(nullptr), is_long(false) { }
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/**
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* Checks if there are command line entries to process.
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*/
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bool HasEntries() const { return argc > 0; }
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/**
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* Gets the last parsed option.
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*/
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char *GetOption() {
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assert(option_raw != nullptr);
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return option_raw;
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}
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/**
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* Checks if current option is a specified option.
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*/
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bool CheckOption(const OptionDef& opt);
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/**
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* Checks if current option is a specified option
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* or specified alternative option.
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*/
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bool CheckOption(const OptionDef& opt, const OptionDef &alt_opt) {
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return CheckOption(opt) || CheckOption(alt_opt);
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}
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/**
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* Parses current command line entry.
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* Returns true on success, false otherwise.
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* Regardless of result, advances current position to the next
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* command line entry.
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*/
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bool ParseNext();
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/**
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* Checks if specified string is a command line option.
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*/
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static bool IsOption(const char *s) {
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assert(s != nullptr);
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return s[0] == '-';
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}
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};
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#endif
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