hedgewars/ArgParsers.pas
author Wuzzy <Wuzzy2@mail.ru>
Tue, 06 Aug 2019 19:13:12 +0200
changeset 15321 a3823f0916b8
parent 15320 3bf780084c86
child 15685 d92eeb468dad
permissions -rw-r--r--
ArgParsers: Remove deprecated command-line arguments
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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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var operatingsystem_parameter_argc: LongInt = 0; {$IFNDEF PAS2C}{$IFNDEF IPHONEOS}cdecl;{$ENDIF} export;{$ENDIF}
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    operatingsystem_parameter_argv: pointer = nil; {$IFNDEF PAS2C}{$IFNDEF IPHONEOS}cdecl;{$ENDIF} export;{$ENDIF}
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    operatingsystem_parameter_envp: pointer = nil; {$IFNDEF PAS2C}{$IFNDEF IPHONEOS}cdecl;{$ENDIF} export;{$ENDIF}
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function ParamCount: LongInt;
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function ParamStr(i: LongInt): shortstring;
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{$ENDIF}
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implementation
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uses uVariables, uTypes, uUtils, uSound, uConsts;
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var isInternal: Boolean;
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    helpCommandUsed: Boolean;
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{$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, 'This is the Hedgewars Engine (hwengine), used to play Hedgewars games and demos.');
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    WriteLn(stdout, 'Use the command-line arguments to play a demo.');
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    WriteLn(stdout, '');
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    WriteLn(stdout, 'Usage: hwengine <path to demo 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, '');
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    WriteLn(stdout, 'File locations:');
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    WriteLn(stdout, '  --prefix <path to folder>: Set the path to the system game data folder');
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    WriteLn(stdout, '  --user-prefix <path to folder>: Set the path to the custom data folder to find game content');
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    WriteLn(stdout, '  --locale <name of file>: Set the game language (en.txt for example)');
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    WriteLn(stdout, '');
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    WriteLn(stdout, 'Graphics:');
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    WriteLn(stdout, '  --width <width in pixels>: Set game window width');
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    WriteLn(stdout, '  --height <height in pixels>: Set game window height');
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    WriteLn(stdout, '  --maximized: Start in maximized window');
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    WriteLn(stdout, '  --fullscreen: Start in fullscreen');
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    WriteLn(stdout, '  --fullscreen-width <width in pixels>: Set fullscreen width');
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    WriteLn(stdout, '  --fullscreen-height <height in pixels>: Set fullscreen height');
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    WriteLn(stdout, '  --low-quality: Lowers the game quality');
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    WriteLn(stdout, '  --zoom <percent>: Start with custom zoom level');
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    WriteLn(stdout, '');
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    WriteLn(stdout, 'Audio:');
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    WriteLn(stdout, '  --volume <sound level>: Set volume between 0 and 100');
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    WriteLn(stdout, '  --nomusic: Disable music');
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    WriteLn(stdout, '  --nosound: Disable sound effects');
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    WriteLn(stdout, '  --nodampen: Don''t dampen sound volume when game application loses focus');
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    WriteLn(stdout, '');
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    WriteLn(stdout, 'HUD:');
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    WriteLn(stdout, '  --altdmg: Show alternative damage');
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    WriteLn(stdout, '  --no-teamtag: Disable team name tags');
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    WriteLn(stdout, '  --no-hogtag: Disable hedgehog name tags');
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    WriteLn(stdout, '  --no-healthtag: Disable hedgehog health tags');
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    WriteLn(stdout, '  --translucent-tags: Enable translucent name and health tags');
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    WriteLn(stdout, '  --showfps: Show frames per second');
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    WriteLn(stdout, '');
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    WriteLn(stdout, 'Miscellaneous:');
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    WriteLn(stdout, '  --nick <name>: Set user nickname');
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    WriteLn(stdout, '  --help: Show a list of command-line options and exit');
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    WriteLn(stdout, '  --protocol: Display protocol number and exit');
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    WriteLn(stdout, '');
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    Writeln(stdout, 'Advanced options:');
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    Writeln(stdout, '  --stereo <value>: Set stereoscopic rendering (1 to 14)');
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    WriteLn(stdout, '  --frame-interval <milliseconds>: Set minimum interval (in ms) between each frame. Eg, 40 would make the game run at most 25 fps');
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    WriteLn(stdout, '  --raw-quality <flags>: Manually specify the reduced quality flags');
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    WriteLn(stdout, '  --stats-only: Write the round information to console without launching the game, useful for statistics only');
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    WriteLn(stdout, '  --lua-test <path to script>: Run a Lua test script');
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    GameType:= gmtSyntaxHelp;
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    helpCommandUsed:= true;
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end;
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procedure DisplayProtocol;
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begin
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    WriteLn(stdout, IntToStr(cNetProtoVersion));
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    GameType:= gmtSyntaxHelp;
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    helpCommandUsed:= true;
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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:= $FFFFFFFF xor rqLowRes;
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    SetSound(false);
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    SetMusic(false);
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    SetVolume(0);
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end;
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procedure setIpcPort(port: LongInt; var wrongParameter:Boolean);
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begin
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    if isInternal then
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        ipcPort := port
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    else
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        begin
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        WriteLn(stderr, 'ERROR: use of --port is not allowed!');
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        wrongParameter := true;
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        end
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end;
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function parseNick(nick: shortstring): shortstring;
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begin
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    if isInternal then
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        parseNick:= DecodeBase64(nick)
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    else
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        parseNick:= nick;
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end;
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procedure setStereoMode(tmp: LongInt);
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begin
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    GrayScale:= false;
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{$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 setZoom(str:shortstring; var paramIndex:LongInt; var wrongParameter:Boolean);
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var param: LongInt;
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begin
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    param:= getLongIntParameter(str, paramIndex, wrongParameter);
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    if param = 100 then
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        exit;
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    UserZoom:= (param/100.0) * cDefaultZoomLevel;
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    if UserZoom < cMaxZoomLevel then
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        UserZoom:= cMaxZoomLevel;
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    if UserZoom > cMinZoomLevel then
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        UserZoom:= cMinZoomLevel;
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    zoom:= UserZoom;
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    ZoomValue:= UserZoom;
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end;
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function parseParameter(cmd:string; arg:string; var paramIndex:LongInt): Boolean;
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const reallyAll: array[0..34] of shortstring = (
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                '--prefix', '--user-prefix', '--locale', '--fullscreen-width', '--fullscreen-height', '--width',
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                '--height', '--maximized', '--frame-interval', '--volume','--nomusic', '--nosound', '--nodampen',
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                '--fullscreen', '--showfps', '--altdmg', '--low-quality', '--raw-quality', '--stereo', '--nick',
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                '--zoom',
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  {internal}    '--internal', '--port', '--recorder', '--landpreview',
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  {misc}        '--stats-only', '--gci', '--help','--protocol', '--no-teamtag','--no-hogtag','--no-healthtag','--translucent-tags','--lua-test','--no-holiday-silliness');
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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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        {--prefix}               0 : PathPrefix        := getstringParameter (arg, paramIndex, parseParameter);
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        {--user-prefix}          1 : UserPathPrefix    := getstringParameter (arg, paramIndex, parseParameter);
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   265
        {--locale}               2 : cLanguageFName    := getstringParameter (arg, paramIndex, parseParameter);
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        {--fullscreen-width}     3 : cFullscreenWidth  := max(getLongIntParameter(arg, paramIndex, parseParameter), cMinScreenWidth);
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        {--fullscreen-height}    4 : cFullscreenHeight := max(getLongIntParameter(arg, paramIndex, parseParameter), cMinScreenHeight);
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        {--width}                5 : cWindowedWidth    := max(2 * (getLongIntParameter(arg, paramIndex, parseParameter) div 2), cMinScreenWidth);
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        {--height}               6 : cWindowedHeight   := max(2 * (getLongIntParameter(arg, paramIndex, parseParameter) div 2), cMinScreenHeight);
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        {--maximized}            7 : cWindowedMaximized:= true;
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   271
        {--frame-interval}       8 : cTimerInterval    := getLongIntParameter(arg, paramIndex, parseParameter);
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        {--volume}               9 : SetVolume          ( max(getLongIntParameter(arg, paramIndex, parseParameter), 0) );
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        {--nomusic}             10 : SetMusic           ( false );
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        {--nosound}             11 : SetSound           ( false );
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        {--nodampen}            12 : SetAudioDampen     ( false );
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        {--fullscreen}          13 : cFullScreen       := true;
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        {--showfps}             14 : cShowFPS          := true;
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        {--altdmg}              15 : cAltDamage        := true;
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        {--low-quality}         16 : cReducedQuality   := $FFFFFFFF xor rqLowRes;
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        {--raw-quality}         17 : cReducedQuality   := getLongIntParameter(arg, paramIndex, parseParameter);
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        {--stereo}              18 : setStereoMode      ( getLongIntParameter(arg, paramIndex, parseParameter) );
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        {--nick}                19 : UserNick          := parseNick( getstringParameter(arg, paramIndex, parseParameter) );
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        {--zoom}                20 : setZoom(arg, paramIndex, parseParameter);
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        {"internal" options}
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        {--internal}            21 : {$IFDEF HWLIBRARY}isInternal:= true{$ENDIF};
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        {--port}                22 : setIpcPort( getLongIntParameter(arg, paramIndex, parseParameter), parseParameter );
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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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        {--protocol}            28 : DisplayProtocol();
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        {--no-teamtag}          29 : cTagsMask := cTagsMask and (not htTeamName);
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        {--no-hogtag}           30 : cTagsMask := cTagsMask and (not htName);
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        {--no-healthtag}        31 : cTagsMask := cTagsMask and (not htHealth);
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        {--translucent-tags}    32 : cTagsMask := cTagsMask or htTransparent;
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        {--lua-test}            33 : begin cTestLua := true; SetSound(false); cScriptName := getstringParameter(arg, paramIndex, parseParameter); WriteLn(stdout, 'Lua test file specified: ' + cScriptName);end;
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        {--no-holiday-silliness} 34 : cHolidaySilliness:= false;
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    else
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        begin
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        //Assume the first "non parameter" is the demo 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 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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    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:= gmtBadSyntax;
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end;
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procedure GetParams;
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begin
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    isInternal:= (ParamStr(1) = '--internal');
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    helpCommandUsed:= false;
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    UserPathPrefix := _S'.';
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    PathPrefix     := cDefaultPathPrefix;
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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, 'The "--internal" option should not be manually used!');
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        GameType := gmtBadSyntax;
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        end;
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    if (not helpCommandUsed) then
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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 demo file.');
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            GameType := gmtBadSyntax;
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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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    if (GameType = gmtBadSyntax) then
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        WriteLn(stderr, 'Please use --help to see possible arguments and their usage.');
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end;
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end.
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