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argparser.cpp
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argparser.cpp
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/*******************************************************************************
* fred Copyright (c) 2011-2013 by Gillen Daniel <gillen.dan@pinguin.lu> *
* *
* Forensic Registry EDitor (fred) is a cross-platform M$ registry hive editor *
* with special feautures useful during forensic analysis. *
* *
* This program is free software: you can redistribute it and/or modify it *
* under the terms of the GNU General Public License as published by the Free *
* Software Foundation, either version 3 of the License, or (at your option) *
* any later version. *
* *
* This program is distributed in the hope that it will be useful, but WITHOUT *
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or *
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for *
* more details. *
* *
* You should have received a copy of the GNU General Public License along with *
* this program. If not, see <http://www.gnu.org/licenses/>. *
*******************************************************************************/
#include "argparser.h"
ArgParser::ArgParser(QStringList args) {
this->argv=QStringList(args);
this->argc=this->argv.count();
this->error_msg="";
this->parsed_args.clear();
}
QString ArgParser::GetErrorMsg() {
QString msg=this->error_msg;
this->error_msg="";
return msg;
}
bool ArgParser::ParseArgs() {
int i=0;
int sep_pos=0;
QString cur_arg="";
QString cur_arg_param="";
while(i+1<this->argc) {
// Get current argument
cur_arg=this->argv.at(++i);
if(cur_arg.size()>1) {
// Check for short mode command line args
if(cur_arg[0]=='-' && cur_arg[1]!='-') {
if(cur_arg=="-?" || cur_arg=="-h") {
this->parsed_args.insert(cur_arg.mid(1),QString());
continue;
} else if(cur_arg=="-v") {
this->parsed_args.insert(cur_arg.mid(1),QString());
continue;
} else {
// Unknown argument
this->SetError(QString("Unknown command line argument '%1'!")
.arg(cur_arg));
return false;
}
}
// Check for long mode command line args
if(cur_arg[0]=='-' && cur_arg[1]=='-') {
// Extract argument parameter if there is one
sep_pos=cur_arg.indexOf('=');
if(sep_pos!=-1) {
cur_arg_param=cur_arg.mid(sep_pos+1);
// Remove parameter from arg
cur_arg=cur_arg.left(sep_pos);
} else {
cur_arg_param="";
}
if(cur_arg=="--") {
// Stop processing arguments. Anything that follows this argument is
// considered to be a hive to open
i++;
break;
} else if(cur_arg=="--dump-report") {
this->parsed_args.insert(cur_arg.mid(2),cur_arg_param);
continue;
} else if(cur_arg=="--fullscreen") {
this->parsed_args.insert(cur_arg.mid(2),cur_arg_param);
continue;
} else if(cur_arg=="--help") {
this->parsed_args.insert(cur_arg.mid(2),QString());
continue;
} else if(cur_arg=="--maximized") {
this->parsed_args.insert(cur_arg.mid(2),cur_arg_param);
continue;
} else if(cur_arg=="--version") {
this->parsed_args.insert(cur_arg.mid(2),QString());
continue;
} else {
// Unknown argument
this->SetError(QString("Unknown command line argument '%1'!")
.arg(cur_arg));
return false;
}
}
}
// Found argument not beginning with '-' or '--'
if(i+1==this->argc) {
// If this is the last argument, it should be a hive file
this->parsed_args.insert(QString("hive-file"),cur_arg);
break;
} else {
// If it isn't the last argument, there is an error
this->SetError(QString("Unknown command line argument '%1'!")
.arg(cur_arg));
return false;
}
}
return true;
}
bool ArgParser::IsSet(QString arg) {
return this->parsed_args.contains(arg);
}
QString ArgParser::GetArgVal(QString arg) {
// If arg is not in parsed_args, the following will return a
// "default-constructed value" which should be a QString() according to the
// docs.
return this->parsed_args[arg];
}
void ArgParser::SetError(QString msg) {
this->error_msg=msg;
}

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