(*

 * Hedgewars, a free turn based strategy game

 * Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>

 *

 * 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; version 2 of the License

 *

 * 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, write to the Free Software

 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 *)

{$INCLUDE "options.inc"}

unit ArgParsers;

interface

procedure GetParams;

{$IFDEF HWLIBRARY}

{$IFDEF WIN32} // FIXME: what is the correct condition?

var operatingsystem_parameter_argc: LongInt; external;

    operatingsystem_parameter_argv: pointer; external;

    operatingsystem_parameter_envp: pointer; external;

{$ELSE}

var operatingsystem_parameter_argc: LongInt = 0; export;

    operatingsystem_parameter_argv: pointer = nil; export;

    operatingsystem_parameter_envp: pointer = nil; export;

{$ENDIF}

function ParamCount: LongInt;

function ParamStr(i: LongInt): shortstring;

{$ENDIF}

implementation

uses uVariables, uTypes, uUtils, uSound, uConsts;

var isInternal: Boolean;

{$IFDEF HWLIBRARY}

type PCharArray = array[0..255] of PChar;

     PPCharArray = ^PCharArray;

function ParamCount: LongInt;

begin

    ParamCount:= operatingsystem_parameter_argc - 1

end;

function ParamStr(i: LongInt): shortstring;

begin

    ParamStr:= StrPas(PPCharArray(operatingsystem_parameter_argv)^[i])

end;

{$ENDIF}

procedure GciEasterEgg;

begin

    WriteLn(stdout, '                                                                ');

    WriteLn(stdout, '      /\\\\\\\\\\\\        /\\\\\\\\\  /\\\\\\\\\\\             ');

    WriteLn(stdout, '     /\\\//////////      /\\\////////  \/////\\\///             ');

    WriteLn(stdout, '     /\\\               /\\\/               \/\\\               ');

    WriteLn(stdout, '     \/\\\    /\\\\\\\  /\\\                 \/\\\              ');

    WriteLn(stdout, '      \/\\\   \/////\\\ \/\\\                 \/\\\             ');

    WriteLn(stdout, '       \/\\\       \/\\\ \//\\\                \/\\\            ');

    WriteLn(stdout, '        \/\\\       \/\\\  \///\\\              \/\\\           ');

    WriteLn(stdout, '         \/\\\\\\\\\\\\\/     \////\\\\\\\\\  /\\\\\\\\\\\      ');

    WriteLn(stdout, '          \/////////////          \/////////  \///////////      ');

    WriteLn(stdout, '                                                                ');

    WriteLn(stdout, ' Command Line Parser Implementation by a Google Code-In Student ');

    WriteLn(stdout, '                                                                ');

end;

procedure DisplayUsage;

begin

    WriteLn(stdout, 'Usage: hwengine <path to replay file> [options]');

    WriteLn(stdout, '');

    WriteLn(stdout, 'where [options] can be any of the following:');

    WriteLn(stdout, ' --prefix [path to folder]');

    WriteLn(stdout, ' --user-prefix [path to folder]');

    WriteLn(stdout, ' --locale [name of language file]');

    WriteLn(stdout, ' --nick [string]');

    WriteLn(stdout, ' --fullscreen-width [fullscreen width in pixels]');

    WriteLn(stdout, ' --fullscreen-height [fullscreen height in pixels]');

    WriteLn(stdout, ' --width [window width in pixels]');

    WriteLn(stdout, ' --height [window height in pixels]');

    WriteLn(stdout, ' --volume [sound level]');

    WriteLn(stdout, ' --frame-interval [milliseconds]');

    Writeln(stdout, ' --stereo [value]');

    WriteLn(stdout, ' --raw-quality [flags]');

    WriteLn(stdout, ' --low-quality');

    WriteLn(stdout, ' --nomusic');

    WriteLn(stdout, ' --nosound');

    WriteLn(stdout, ' --fullscreen');

    WriteLn(stdout, ' --showfps');

    WriteLn(stdout, ' --altdmg');

    WriteLn(stdout, ' --no-teamtag');

    WriteLn(stdout, ' --no-hogtag');

    WriteLn(stdout, ' --no-healthtag');

    WriteLn(stdout, ' --translucent-tags');

    WriteLn(stdout, ' --stats-only');

    WriteLn(stdout, ' --help');

    WriteLn(stdout, '');

    WriteLn(stdout, 'For more detailed help and examples go to:');

    WriteLn(stdout, 'http://code.google.com/p/hedgewars/wiki/CommandLineOptions');

    GameType:= gmtSyntax;

end;

procedure setDepth(var paramIndex: LongInt);

begin

    WriteLn(stdout, 'WARNING: --depth is a deprecated command, which could be removed in a future version!');

    WriteLn(stdout, '         This option no longer does anything, please consider removing it');

    WriteLn(stdout, '');

   inc(ParamIndex);

end;

procedure statsOnlyGame;

begin

    cOnlyStats:= true;

    cReducedQuality:= $FFFFFFFF xor rqLowRes;

    SetSound(false);

    SetMusic(false);

    SetVolume(0);

end;

function parseNick(nick: shortstring): shortstring;

begin

    if isInternal then

        parseNick:= DecodeBase64(nick)

    else

        parseNick:= nick;

end;

procedure setStereoMode(tmp: LongInt);

begin

    GrayScale:= false;

{$IFDEF USE_S3D_RENDERING}

    if (tmp > 6) and (tmp < 13) then

        begin

        // set the gray anaglyph rendering

        GrayScale:= true;

        cStereoMode:= TStereoMode(max(0, min(ord(high(TStereoMode)), tmp-6)))

        end

    else if tmp <= 6 then

        // set the fullcolor anaglyph

        cStereoMode:= TStereoMode(max(0, min(ord(high(TStereoMode)), tmp)))

    else

        // any other mode

        cStereoMode:= TStereoMode(max(0, min(ord(high(TStereoMode)), tmp-6)));

{$ELSE}

    tmp:= tmp;

    cStereoMode:= smNone;

{$ENDIF}

end;

procedure startVideoRecording(var paramIndex: LongInt);

begin

    // Silence the hint that appears when USE_VIDEO_RECORDING is not defined

    paramIndex:= paramIndex;

{$IFDEF USE_VIDEO_RECORDING}

{$IFNDEF HWLIBRARY}

    GameType:= gmtRecord;

    inc(paramIndex);

    cVideoFramerateNum:= StrToInt(ParamStr(paramIndex)); inc(paramIndex);

    cVideoFramerateDen:= StrToInt(ParamStr(paramIndex)); inc(paramIndex);

    RecPrefix:= ParamStr(paramIndex);                    inc(paramIndex);

    cAVFormat:= ParamStr(paramIndex);                    inc(paramIndex);

    cVideoCodec:= ParamStr(paramIndex);                  inc(paramIndex);

    cVideoQuality:= StrToInt(ParamStr(paramIndex));      inc(paramIndex);

    cAudioCodec:= ParamStr(paramIndex);                  inc(paramIndex);

{$ENDIF}

{$ENDIF}

end;

function getLongIntParameter(str:shortstring; var paramIndex:LongInt; var wrongParameter:Boolean): LongInt;

var tmpInt, c: LongInt;

begin

    inc(paramIndex);

{$IFDEF PAS2C OR HWLIBRARY}

    val(str, tmpInt);

{$ELSE}

    val(str, tmpInt, c);

    wrongParameter:= c <> 0;

    if wrongParameter then

        WriteLn(stderr, 'ERROR: '+ParamStr(paramIndex-1)+' expects a number, you passed "'+str+'"');

{$ENDIF}

    getLongIntParameter:= tmpInt;

end;

function getstringParameter(str:shortstring; var paramIndex:LongInt; var wrongParameter:Boolean): shortstring;

begin

    inc(paramIndex);

    wrongParameter:= (str='') or (Copy(str,1,2) = '--');

    {$IFNDEF HWLIBRARY}

    if wrongParameter then

        WriteLn(stderr, 'ERROR: '+ParamStr(paramIndex-1)+' expects a string, you passed "'+str+'"');

    {$ENDIF}

    getstringParameter:= str;

end;

procedure parseClassicParameter(cmdarray: array of string; size:LongInt; var paramIndex:LongInt); forward;

function parseParameter(cmd:string; arg:string; var paramIndex:LongInt): Boolean;

const videoarray: array [0..4] of string = ('--fullscreen-width','--fullscreen-height', '--width', '--height', '--depth');

      audioarray: array [0..2] of string = ('--volume','--nomusic','--nosound');

      otherarray: array [0..2] of string = ('--locale','--fullscreen','--showfps');

      mediaarray: array [0..9] of string = ('--fullscreen-width', '--fullscreen-height', '--width', '--height', '--depth', '--volume','--nomusic','--nosound','--locale','--fullscreen');

      allarray: array [0..17] of string = ('--fullscreen-width','--fullscreen-height', '--width', '--height', '--depth','--volume','--nomusic','--nosound','--locale','--fullscreen','--showfps','--altdmg','--frame-interval','--low-quality','--no-teamtag','--no-hogtag','--no-healthtag','--translucent-tags');

      reallyAll: array[0..32] of shortstring = (

                '--locale', '--fullscreen-width', '--fullscreen-height', '--width',

                '--height', '--frame-interval', '--volume','--nomusic', '--nosound',

                '--fullscreen', '--showfps', '--altdmg', '--low-quality', '--raw-quality', '--stereo', '--nick',

  {deprecated}  '--depth', '--set-video', '--set-audio', '--set-other', '--set-multimedia', '--set-everything',

  {internal}    '--internal', '--recorder', '--landpreview',

  {misc}        '--stats-only', '--gci', '--help','--no-teamtag','--no-hogtag','--no-healthtag','--translucent-tags','--lua-test');

var cmdIndex: byte;

begin

    parseParameter:= false;

    cmdIndex:= 0;

    //NOTE: Any update to the list of parameters must be reflected in the case statement below, the reallyAll array above,

    //      the the DisplayUsage() procedure, the HWForm::getDemoArguments() function, and the online wiki

    while (cmdIndex <= High(reallyAll)) and (cmd <> reallyAll[cmdIndex]) do inc(cmdIndex);

    case cmdIndex of

        {--locale}               0 : cLocaleFName      := getstringParameter (arg, paramIndex, parseParameter);

        {--fullscreen-width}     1 : cFullscreenWidth  := max(getLongIntParameter(arg, paramIndex, parseParameter), cMinScreenWidth);

        {--fullscreen-height}    2 : cFullscreenHeight := max(getLongIntParameter(arg, paramIndex, parseParameter), cMinScreenHeight);

        {--width}                3 : cWindowedWidth    := max(2 * (getLongIntParameter(arg, paramIndex, parseParameter) div 2), cMinScreenWidth);

        {--height}               4 : cWindowedHeight   := max(2 * (getLongIntParameter(arg, paramIndex, parseParameter) div 2), cMinScreenHeight);

        {--frame-interval}       5 : cTimerInterval    := getLongIntParameter(arg, paramIndex, parseParameter);

        {--volume}               6 : SetVolume          ( max(getLongIntParameter(arg, paramIndex, parseParameter), 0) );

        {--nomusic}              7 : SetMusic           ( false );

        {--nosound}              8 : SetSound           ( false );

        {--fullscreen}           9 : cFullScreen       := true;

        {--showfps}             10 : cShowFPS          := true;

        {--altdmg}              11 : cAltDamage        := true;

        {--low-quality}         12 : cReducedQuality   := $FFFFFFFF xor rqLowRes;

        {--raw-quality}         13 : cReducedQuality   := getLongIntParameter(arg, paramIndex, parseParameter);

        {--stereo}              14 : setStereoMode      ( getLongIntParameter(arg, paramIndex, parseParameter) );

        {--nick}                15 : UserNick          := parseNick( getstringParameter(arg, paramIndex, parseParameter) );

        {deprecated options}

        {--depth}               16 : setDepth(paramIndex);

        {--set-video}           17 : parseClassicParameter(videoarray,5,paramIndex);

        {--set-audio}           18 : parseClassicParameter(audioarray,3,paramIndex);

        {--set-other}           19 : parseClassicParameter(otherarray,3,paramIndex);

        {--set-multimedia}      20 : parseClassicParameter(mediaarray,10,paramIndex);

        {--set-everything}      21 : parseClassicParameter(allarray,14,paramIndex);

        {"internal" options}

        {--internal}            22 : {$IFDEF HWLIBRARY}isInternal:= true{$ENDIF};

        {--recorder}            23 : startVideoRecording(paramIndex);

        {--landpreview}         24 : GameType := gmtLandPreview;

        {anything else}

        {--stats-only}          25 : statsOnlyGame();

        {--gci}                 26 : GciEasterEgg();

        {--help}                27 : DisplayUsage();

        {--no-teamtag}          28 : cTagsMask := cTagsMask and (not htTeamName);

        {--no-hogtag}           29 : cTagsMask := cTagsMask and (not htName);

        {--no-healthtag}        30 : cTagsMask := cTagsMask and (not htHealth);

        {--translucent-tags}    31 : cTagsMask := cTagsMask or htTransparent;

        {--lua-test}            32: begin cTestLua := true; SetSound(false); cScriptName := getstringParameter(arg, paramIndex, parseParameter); WriteLn(stdout, 'Lua test file specified: ' + cScriptName);end;

    else

        begin

        //Assume the first "non parameter" is the replay file, anything else is invalid

        if (recordFileName = '') and (Copy(cmd,1,2) <> '--') then

            recordFileName := cmd

        else

            begin

            WriteLn(stderr, '"'+cmd+'" is not a valid option');

            parseParameter:= true;

            end;

        end;

    end;

end;

procedure parseClassicParameter(cmdarray: array of string; size:LongInt; var paramIndex:LongInt);

var index, tmpInt: LongInt;

    isBool, isValid: Boolean;

    cmd, arg, newSyntax: string;

begin

    WriteLn(stdout, 'WARNING: you are using a deprecated command, which could be removed in a future version!');

    WriteLn(stdout, '         Consider updating to the latest syntax, which is much more flexible!');

    WriteLn(stdout, '         Run `hwegine --help` to learn it!');

    WriteLn(stdout, '');

    index:= 0;

    tmpInt:= 1;

    while (index < size) do

        begin

        newSyntax:= '';

        inc(paramIndex);

        cmd:= cmdarray[index];

        arg:= cmdarray[paramIndex];

        isValid:= (cmd<>'--depth');

        // check if the parameter is a boolean one

        isBool:= (cmd = '--nomusic') or (cmd = '--nosound') or (cmd = '--fullscreen') or (cmd = '--showfps') or (cmd = '--altdmg') or (cmd = '--no-teamtag') or (cmd = '--no-hogtag') or (cmd = '--no-healthtag') or (cmd = '--translucent-tags');

        if isBool and (arg='0') then

            isValid:= false;

        if (cmd='--nomusic') or (cmd='--nosound') then

            isValid:= not isValid;

        if isValid then

            begin

            parseParameter(cmd, arg, tmpInt);

            newSyntax:= newSyntax + cmd + ' ';

            if not isBool then

                newSyntax:= newSyntax + arg + ' ';

            end;

        inc(index);

        end;

    WriteLn(stdout, 'Attempted to automatically convert to the new syntax:');

    WriteLn(stdout, newSyntax);

    WriteLn(stdout, '');

end;

procedure parseCommandLine;

var paramIndex: LongInt;

    paramTotal: LongInt;

    index, nextIndex: LongInt;

    wrongParameter: boolean;

var tmpInt: LongInt;

begin

    paramIndex:= {$IFDEF HWLIBRARY}0{$ELSE}1{$ENDIF};

    paramTotal:= ParamCount; //-1 because pascal enumeration is inclusive

    WriteLn(stdout, 'total parameters: ' + inttostr(paramTotal));

    tmpInt:= 0;

    while (tmpInt <= paramTotal) do

        begin

        WriteLn(stdout, inttostr(tmpInt) + ': ' + {$IFDEF HWLIBRARY}argv[tmpInt]{$ELSE}paramCount(tmpInt){$ENDIF});

        inc(tmpInt);

        end;

    wrongParameter:= false;

    while (paramIndex <= paramTotal) do

        begin

        // avoid going past the number of paramTotal (esp. w/ library)

        index:= paramIndex;

        if index = paramTotal then nextIndex:= index

        else nextIndex:= index+1;

        wrongParameter:= parseParameter( ParamStr(index), ParamStr(nextIndex), paramIndex);

        inc(paramIndex);

        end;

    if wrongParameter = true then

        GameType:= gmtSyntax;

end;

procedure GetParams;

begin

    if ParamCount > 0 then

        begin

        isInternal:= (ParamStr(1) = '--internal');

        recordFileName := '';

        parseCommandLine();

        if (isInternal) and (ParamCount<=1) then

            begin

            WriteLn(stderr, '--internal should not be manually used');

            GameType := gmtSyntax;

            end;

        if (not cTestLua) and (not isInternal) and (recordFileName = '') then

            begin

            WriteLn(stderr, 'You must specify a replay file');

            GameType := gmtSyntax;

            end

        else if (recordFileName <> '') then

            WriteLn(stdout, 'Attempting to play demo file "' + recordFilename + '"');

        end 

    else

        GameType:= gmtSyntax;

    if (GameType = gmtSyntax) then

        WriteLn(stderr, 'Please use --help to see possible arguments and their usage');

    (*

    WriteLn(stdout,'PathPrefix:     ' + PathPrefix);

    WriteLn(stdout,'UserPathPrefix: ' + UserPathPrefix);

    *)

end;

end.