/*
* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
* its licensors.
*
* For complete copyright and license terms please see the LICENSE at the root of this
* distribution (the "License"). All use of this software is governed by the License,
* or, if provided, by the license below or the license accompanying this file. Do not
* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
*
*/
// Original file Copyright Crytek GMBH or its affiliates, used under license.

#include "stdafx.h"
#include "CmdLine.h"
#include "Config.h"


//////////////////////////////////////////////////////////////////////////
static void AddParameterToConfig(Config* config, const char* parameter)
{
    // Split on key/value pair
    const string p = parameter;
    const size_t splitterPos = p.find('=');
    if (splitterPos != string::npos)
    {
        const string key = p.substr(0, splitterPos);
        const string value = p.substr(splitterPos + 1);
        if (!key.empty())
        {
            config->SetKeyValue(eCP_PriorityCmdline, key.c_str(), value.c_str());
        }
    }
    else
    {
        config->SetKeyValue(eCP_PriorityCmdline, p.c_str(), "");
    }
}

//////////////////////////////////////////////////////////////////////////
//Return true if the parameter is a file spec
/////////////////////////////////////////////////////////////////////////
static bool isValidFileSpecCheck(const string& path)
{
    if (path[0] == '-')
    {
        return false;
    }

    //Since Macs can have '/' in the file paths check for '='
    //to confirm that it is a file spec and not a config argument.
    if (path[0] == '/')
    {
        const size_t equalPos = path.find('=');
        if (equalPos != string::npos)
        {
            return false;
        }
        else
        {
            //You can have a config argument that does not have a '='. Use
            //extension path to determine if it is a file spec.
            return PathHelpers::FindExtension(path) != "";
        }
    }

    return true;
}

//////////////////////////////////////////////////////////////////////////
void CmdLine::Parse(const std::vector<string>& args, Config* config, string& fileSpec)
{
    assert(config);

    fileSpec.clear();

    for (int i = 1; i < (int)args.size(); ++i)
    {
        const char* const parameter = args[i].c_str();
        
        bool isValidFileSpec = isValidFileSpecCheck(string(parameter));

        if (isValidFileSpec)
        {
            if (fileSpec.empty())
            {
                fileSpec = parameter;
            }
        }
        else
        {
            AddParameterToConfig(config, parameter + 1);
        }
    }
}