hedgewars/ArgParsers.pas
author unc0rr
Tue, 09 Feb 2016 21:11:16 +0300
branchqmlfrontend
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child 11699 83c40c1eb0e7
permissions -rw-r--r--
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(*
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 * Hedgewars, a free turn based strategy game
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 * Copyright (c) 2004-2015 Andrey Korotaev <unC0Rr@gmail.com>
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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; version 2 of the License
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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
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 * along with this program; if not, write to the Free Software
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 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
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 *)
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{$INCLUDE "options.inc"}
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unit ArgParsers;
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interface
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procedure GetParams;
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{$IFDEF HWLIBRARY}
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{$IFNDEF BSD}
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var operatingsystem_parameter_argc: NativeInt; external;
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    operatingsystem_parameter_argv: pointer; external;
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    operatingsystem_parameter_envp: pointer; external;
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{$ELSE}
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var operatingsystem_parameter_argc: LongInt; export;
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    operatingsystem_parameter_argv: pointer; export;
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    operatingsystem_parameter_envp: pointer; export;
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{$ENDIF}
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function ParamCount: LongInt;
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function ParamStr(i: LongInt): shortstring;
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{$ENDIF}
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implementation
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uses uVariables, uTypes, uUtils, uSound, uConsts;
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var isInternal: Boolean;
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{$IFDEF HWLIBRARY}
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type PCharArray = array[0..255] of PChar;
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     PPCharArray = ^PCharArray;
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function ParamCount: LongInt;
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begin
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    ParamCount:= operatingsystem_parameter_argc - 1
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end;
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function ParamStr(i: LongInt): shortstring;
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begin
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    ParamStr:= StrPas(PPCharArray(operatingsystem_parameter_argv)^[i])
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end;
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{$ENDIF}
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procedure GciEasterEgg;
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begin
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    WriteLn(stdout, '                                                                ');
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    WriteLn(stdout, '      /\\\\\\\\\\\\        /\\\\\\\\\  /\\\\\\\\\\\             ');
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    WriteLn(stdout, '     /\\\//////////      /\\\////////  \/////\\\///             ');
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    WriteLn(stdout, '     /\\\               /\\\/               \/\\\               ');
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    WriteLn(stdout, '     \/\\\    /\\\\\\\  /\\\                 \/\\\              ');
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    WriteLn(stdout, '      \/\\\   \/////\\\ \/\\\                 \/\\\             ');
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    WriteLn(stdout, '       \/\\\       \/\\\ \//\\\                \/\\\            ');
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    WriteLn(stdout, '        \/\\\       \/\\\  \///\\\              \/\\\           ');
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    WriteLn(stdout, '         \/\\\\\\\\\\\\\/     \////\\\\\\\\\  /\\\\\\\\\\\      ');
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    WriteLn(stdout, '          \/////////////          \/////////  \///////////      ');
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    WriteLn(stdout, '                                                                ');
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    WriteLn(stdout, ' Command Line Parser Implementation by a Google Code-In Student ');
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    WriteLn(stdout, '                                                                ');
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end;
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procedure DisplayUsage;
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begin
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    WriteLn(stdout, 'Usage: hwengine <path to replay file> [options]');
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    WriteLn(stdout, '');
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    WriteLn(stdout, 'where [options] can be any of the following:');
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    WriteLn(stdout, ' --prefix [path to folder]');
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    WriteLn(stdout, ' --user-prefix [path to folder]');
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    WriteLn(stdout, ' --locale [name of language file]');
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    WriteLn(stdout, ' --nick [string]');
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    WriteLn(stdout, ' --fullscreen-width [fullscreen width in pixels]');
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    WriteLn(stdout, ' --fullscreen-height [fullscreen height in pixels]');
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    WriteLn(stdout, ' --width [window width in pixels]');
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    WriteLn(stdout, ' --height [window height in pixels]');
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    WriteLn(stdout, ' --volume [sound level]');
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    WriteLn(stdout, ' --frame-interval [milliseconds]');
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    Writeln(stdout, ' --stereo [value]');
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    WriteLn(stdout, ' --raw-quality [flags]');
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    WriteLn(stdout, ' --low-quality');
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    WriteLn(stdout, ' --nomusic');
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    WriteLn(stdout, ' --nosound');
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    WriteLn(stdout, ' --fullscreen');
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    WriteLn(stdout, ' --showfps');
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    WriteLn(stdout, ' --altdmg');
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    WriteLn(stdout, ' --no-teamtag');
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    WriteLn(stdout, ' --no-hogtag');
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    WriteLn(stdout, ' --no-healthtag');
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    WriteLn(stdout, ' --translucent-tags');
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    WriteLn(stdout, ' --stats-only');
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    WriteLn(stdout, ' --help');
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    WriteLn(stdout, '');
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    WriteLn(stdout, 'For more detailed help and examples go to:');
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    WriteLn(stdout, 'http://hedgewars.org/kb/CommandLineOptions');
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    GameType:= gmtSyntax;
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end;
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procedure setDepth(var paramIndex: LongInt);
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begin
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    WriteLn(stdout, 'WARNING: --depth is a deprecated command, which could be removed in a future version!');
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    WriteLn(stdout, '         This option no longer does anything, please consider removing it');
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    WriteLn(stdout, '');
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   inc(ParamIndex);
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end;
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procedure statsOnlyGame;
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begin
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    cOnlyStats:= true;
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    cReducedQuality:= $FFFFFFFF xor rqLowRes;
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    SetSound(false);
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    SetMusic(false);
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    SetVolume(0);
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end;
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function parseNick(nick: shortstring): shortstring;
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begin
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    if isInternal then
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        parseNick:= DecodeBase64(nick)
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    else
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        parseNick:= nick;
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end;
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procedure setStereoMode(tmp: LongInt);
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begin
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    GrayScale:= false;
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{$IFDEF USE_S3D_RENDERING}
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    if (tmp > 6) and (tmp < 13) then
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        begin
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        // set the gray anaglyph rendering
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        GrayScale:= true;
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        cStereoMode:= TStereoMode(max(0, min(ord(high(TStereoMode)), tmp-6)))
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        end
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    else if tmp <= 6 then
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        // set the fullcolor anaglyph
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        cStereoMode:= TStereoMode(max(0, min(ord(high(TStereoMode)), tmp)))
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    else
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        // any other mode
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        cStereoMode:= TStereoMode(max(0, min(ord(high(TStereoMode)), tmp-6)));
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{$ELSE}
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    tmp:= tmp;
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    cStereoMode:= smNone;
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{$ENDIF}
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end;
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procedure startVideoRecording(var paramIndex: LongInt);
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begin
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    // Silence the hint that appears when USE_VIDEO_RECORDING is not defined
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    paramIndex:= paramIndex;
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{$IFDEF USE_VIDEO_RECORDING}
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{$IFNDEF HWLIBRARY}
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    GameType:= gmtRecord;
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    inc(paramIndex);
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    cVideoFramerateNum:= StrToInt(ParamStr(paramIndex)); inc(paramIndex);
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    cVideoFramerateDen:= StrToInt(ParamStr(paramIndex)); inc(paramIndex);
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    RecPrefix:= ParamStr(paramIndex);                    inc(paramIndex);
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    cAVFormat:= ParamStr(paramIndex);                    inc(paramIndex);
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    cVideoCodec:= ParamStr(paramIndex);                  inc(paramIndex);
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    cVideoQuality:= StrToInt(ParamStr(paramIndex));      inc(paramIndex);
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    cAudioCodec:= ParamStr(paramIndex);                  inc(paramIndex);
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{$ENDIF}
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{$ENDIF}
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end;
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function getLongIntParameter(str:shortstring; var paramIndex:LongInt; var wrongParameter:Boolean): LongInt;
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var tmpInt, c: LongInt;
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begin
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    inc(paramIndex);
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{$IFDEF PAS2C OR HWLIBRARY}
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    val(str, tmpInt);
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{$ELSE}
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    val(str, tmpInt, c);
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    wrongParameter:= c <> 0;
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    if wrongParameter then
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        WriteLn(stderr, 'ERROR: '+ParamStr(paramIndex-1)+' expects a number, you passed "'+str+'"');
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{$ENDIF}
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    getLongIntParameter:= tmpInt;
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end;
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function getstringParameter(str:shortstring; var paramIndex:LongInt; var wrongParameter:Boolean): shortstring;
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begin
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    inc(paramIndex);
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    wrongParameter:= (str='') or (Copy(str,1,2) = '--');
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    {$IFNDEF HWLIBRARY}
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    if wrongParameter then
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        WriteLn(stderr, 'ERROR: '+ParamStr(paramIndex-1)+' expects a string, you passed "'+str+'"');
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    {$ENDIF}
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    getstringParameter:= str;
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end;
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procedure parseClassicParameter(cmdarray: array of string; size:LongInt; var paramIndex:LongInt); forward;
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function parseParameter(cmd:string; arg:string; var paramIndex:LongInt): Boolean;
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const videoarray: array [0..4] of string = ('--fullscreen-width','--fullscreen-height', '--width', '--height', '--depth');
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      audioarray: array [0..2] of string = ('--volume','--nomusic','--nosound');
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      otherarray: array [0..2] of string = ('--locale','--fullscreen','--showfps');
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      mediaarray: array [0..9] of string = ('--fullscreen-width', '--fullscreen-height', '--width', '--height', '--depth', '--volume','--nomusic','--nosound','--locale','--fullscreen');
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      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');
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      reallyAll: array[0..32] of shortstring = (
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                '--locale', '--fullscreen-width', '--fullscreen-height', '--width',
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                '--height', '--frame-interval', '--volume','--nomusic', '--nosound',
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                '--fullscreen', '--showfps', '--altdmg', '--low-quality', '--raw-quality', '--stereo', '--nick',
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  {deprecated}  '--depth', '--set-video', '--set-audio', '--set-other', '--set-multimedia', '--set-everything',
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  {internal}    '--internal', '--recorder', '--landpreview',
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  {misc}        '--stats-only', '--gci', '--help','--no-teamtag','--no-hogtag','--no-healthtag','--translucent-tags','--lua-test');
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var cmdIndex: byte;
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begin
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    parseParameter:= false;
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    cmdIndex:= 0;
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    //NOTE: Any update to the list of parameters must be reflected in the case statement below, the reallyAll array above,
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    //      the the DisplayUsage() procedure, the HWForm::getDemoArguments() function, and the online wiki
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    while (cmdIndex <= High(reallyAll)) and (cmd <> reallyAll[cmdIndex]) do inc(cmdIndex);
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    case cmdIndex of
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        {--locale}               0 : cLocaleFName      := getstringParameter (arg, paramIndex, parseParameter);
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        {--fullscreen-width}     1 : cFullscreenWidth  := max(getLongIntParameter(arg, paramIndex, parseParameter), cMinScreenWidth);
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        {--fullscreen-height}    2 : cFullscreenHeight := max(getLongIntParameter(arg, paramIndex, parseParameter), cMinScreenHeight);
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        {--width}                3 : cWindowedWidth    := max(2 * (getLongIntParameter(arg, paramIndex, parseParameter) div 2), cMinScreenWidth);
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        {--height}               4 : cWindowedHeight   := max(2 * (getLongIntParameter(arg, paramIndex, parseParameter) div 2), cMinScreenHeight);
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        {--frame-interval}       5 : cTimerInterval    := getLongIntParameter(arg, paramIndex, parseParameter);
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        {--volume}               6 : SetVolume          ( max(getLongIntParameter(arg, paramIndex, parseParameter), 0) );
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        {--nomusic}              7 : SetMusic           ( false );
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        {--nosound}              8 : SetSound           ( false );
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        {--fullscreen}           9 : cFullScreen       := true;
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        {--showfps}             10 : cShowFPS          := true;
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        {--altdmg}              11 : cAltDamage        := true;
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        {--low-quality}         12 : cReducedQuality   := $FFFFFFFF xor rqLowRes;
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        {--raw-quality}         13 : cReducedQuality   := getLongIntParameter(arg, paramIndex, parseParameter);
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        {--stereo}              14 : setStereoMode      ( getLongIntParameter(arg, paramIndex, parseParameter) );
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        {--nick}                15 : UserNick          := parseNick( getstringParameter(arg, paramIndex, parseParameter) );
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        {deprecated options}
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        {--depth}               16 : setDepth(paramIndex);
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        {--set-video}           17 : parseClassicParameter(videoarray,5,paramIndex);
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        {--set-audio}           18 : parseClassicParameter(audioarray,3,paramIndex);
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        {--set-other}           19 : parseClassicParameter(otherarray,3,paramIndex);
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        {--set-multimedia}      20 : parseClassicParameter(mediaarray,10,paramIndex);
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        {--set-everything}      21 : parseClassicParameter(allarray,14,paramIndex);
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        {"internal" options}
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        {--internal}            22 : {$IFDEF HWLIBRARY}isInternal:= true{$ENDIF};
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        {--recorder}            23 : startVideoRecording(paramIndex);
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        {--landpreview}         24 : GameType := gmtLandPreview;
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        {anything else}
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        {--stats-only}          25 : statsOnlyGame();
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        {--gci}                 26 : GciEasterEgg();
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        {--help}                27 : DisplayUsage();
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        {--no-teamtag}          28 : cTagsMask := cTagsMask and (not htTeamName);
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        {--no-hogtag}           29 : cTagsMask := cTagsMask and (not htName);
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        {--no-healthtag}        30 : cTagsMask := cTagsMask and (not htHealth);
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        {--translucent-tags}    31 : cTagsMask := cTagsMask or htTransparent;
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        {--lua-test}            32: begin cTestLua := true; SetSound(false); cScriptName := getstringParameter(arg, paramIndex, parseParameter); WriteLn(stdout, 'Lua test file specified: ' + cScriptName);end;
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    else
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        begin
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        //Assume the first "non parameter" is the replay file, anything else is invalid
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        if (recordFileName = '') and (Copy(cmd,1,2) <> '--') then
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            recordFileName := cmd
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        else
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            begin
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            WriteLn(stderr, '"'+cmd+'" is not a valid option');
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            parseParameter:= true;
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            end;
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        end;
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    end;
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end;
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procedure parseClassicParameter(cmdarray: array of string; size:LongInt; var paramIndex:LongInt);
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var index, tmpInt: LongInt;
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    isBool, isValid: Boolean;
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    cmd, arg, newSyntax: string;
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begin
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    WriteLn(stdout, 'WARNING: you are using a deprecated command, which could be removed in a future version!');
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    WriteLn(stdout, '         Consider updating to the latest syntax, which is much more flexible!');
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    WriteLn(stdout, '         Run `hwegine --help` to learn it!');
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    WriteLn(stdout, '');
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    index:= 0;
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    tmpInt:= 1;
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    while (index < size) do
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        begin
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        newSyntax:= '';
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        inc(paramIndex);
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        cmd:= cmdarray[index];
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        arg:= cmdarray[paramIndex];
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        isValid:= (cmd<>'--depth');
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        // check if the parameter is a boolean one
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        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');
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        if isBool and (arg='0') then
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            isValid:= false;
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        if (cmd='--nomusic') or (cmd='--nosound') then
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            isValid:= not isValid;
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        if isValid then
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            begin
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            parseParameter(cmd, arg, tmpInt);
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            newSyntax:= newSyntax + cmd + ' ';
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            if not isBool then
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                newSyntax:= newSyntax + arg + ' ';
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            end;
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        inc(index);
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        end;
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    WriteLn(stdout, 'Attempted to automatically convert to the new syntax:');
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    WriteLn(stdout, newSyntax);
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    WriteLn(stdout, '');
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end;
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procedure parseCommandLine;
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var paramIndex: LongInt;
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    paramTotal: LongInt;
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    index, nextIndex: LongInt;
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    wrongParameter: boolean;
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var tmpInt: LongInt;
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begin
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    paramIndex:= {$IFDEF HWLIBRARY}0{$ELSE}1{$ENDIF};
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    paramTotal:= ParamCount; //-1 because pascal enumeration is inclusive
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    WriteLn(stdout, 'total parameters: ' + inttostr(paramTotal));
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    tmpInt:= 0;
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    while (tmpInt <= paramTotal) do
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        begin
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        WriteLn(stdout, inttostr(tmpInt) + ': ' + {$IFDEF HWLIBRARY}argv[tmpInt]{$ELSE}paramCount(tmpInt){$ENDIF});
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        inc(tmpInt);
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        end;
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    wrongParameter:= false;
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    while (paramIndex <= paramTotal) do
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        begin
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        // avoid going past the number of paramTotal (esp. w/ library)
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        index:= paramIndex;
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        if index = paramTotal then nextIndex:= index
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        else nextIndex:= index+1;
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        wrongParameter:= parseParameter( ParamStr(index), ParamStr(nextIndex), paramIndex);
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        inc(paramIndex);
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        end;
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    if wrongParameter = true then
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        GameType:= gmtSyntax;
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end;
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procedure GetParams;
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begin
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    if ParamCount > 0 then
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        begin
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        isInternal:= (ParamStr(1) = '--internal');
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        recordFileName := '';
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        parseCommandLine();
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        if (isInternal) and (ParamCount<=1) then
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            begin
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            WriteLn(stderr, '--internal should not be manually used');
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            GameType := gmtSyntax;
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            end;
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        if (not cTestLua) and (not isInternal) and (recordFileName = '') then
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            begin
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            WriteLn(stderr, 'You must specify a replay file');
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            GameType := gmtSyntax;
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            end
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        else if (recordFileName <> '') then
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            WriteLn(stdout, 'Attempting to play demo file "' + recordFilename + '"');
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        end 
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    else
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        GameType:= gmtSyntax;
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    if (GameType = gmtSyntax) then
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        WriteLn(stderr, 'Please use --help to see possible arguments and their usage');
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    (*
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    WriteLn(stdout,'PathPrefix:     ' + PathPrefix);
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    WriteLn(stdout,'UserPathPrefix: ' + UserPathPrefix);
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    *)
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end;
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end.
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