422 lines
10 KiB
C++
422 lines
10 KiB
C++
/* -------------------------------------------------------------------------------
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Copyright (C) 1999-2007 id Software, Inc. and contributors.
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For a list of contributors, see the accompanying CONTRIBUTORS file.
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This file is part of GtkRadiant.
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GtkRadiant 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; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant 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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You should have received a copy of the GNU General Public License
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along with GtkRadiant; 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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This code has been altered significantly from its original form, to support
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several games based on the Quake III Arena engine, in the form of "Q3Map2."
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------------------------------------------------------------------------------- */
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/* dependencies */
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#include "q3map2.h"
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/*
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some of this code is based off the original q3map port from loki
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and finds various paths. moved here from bsp.c for clarity.
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*/
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/*
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PathLokiGetHomeDir()
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gets the user's home dir (for ~/.q3a)
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*/
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CopiedString LokiGetHomeDir( void ){
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#ifndef Q_UNIX
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return "";
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#else
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/* get the home environment variable */
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const char *home = getenv( "HOME" );
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/* look up home dir in password database */
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if( home == NULL )
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{
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struct passwd pw, *pwp;
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char buf[ 4096 ];
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if ( getpwuid_r( getuid(), &pw, buf, sizeof( buf ), &pwp ) == 0 ) {
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return pw.pw_dir;
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}
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}
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else{
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return StringOutputStream( 256 )( home, "/." ).c_str();
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}
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/* return it */
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return "";
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#endif
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}
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/*
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PathLokiInitPaths()
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initializes some paths on linux/os x
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*/
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void LokiInitPaths( const char *argv0, CopiedString& homePath, CopiedString& installPath ){
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if ( homePath.empty() ) {
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/* get home dir */
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homePath = LokiGetHomeDir();
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if ( homePath.empty() ) {
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homePath = ".";
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}
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}
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#ifndef Q_UNIX
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/* this is kinda crap, but hey */
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installPath = "../";
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#else
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const char *path = getenv( "PATH" );
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auto temp = StringOutputStream( 256 )( argv0 );
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/* do some path divining */
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if ( strEmpty( path_get_last_separator( temp ) ) && path != NULL ) {
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/*
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This code has a special behavior when q3map2 is a symbolic link.
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For each dir in ${PATH} (example: "/usr/bin", "/usr/local/bin" if ${PATH} == "/usr/bin:/usr/local/bin"),
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it looks for "${dir}/q3map2" (file exists and is executable),
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then it uses "dirname(realpath("${dir}/q3map2"))/../" as installPath.
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So, if "/usr/bin/q3map2" is a symbolic link to "/opt/radiant/tools/q3map2",
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it will find the installPath "/usr/share/radiant/",
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so q3map2 will look for "/opt/radiant/baseq3" to find paks.
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More precisely, it looks for "${dir}/${argv[0]}",
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so if "/usr/bin/q3map2" is a symbolic link to "/opt/radiant/tools/q3map2",
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and if "/opt/radiant/tools/q3ma2" is a symbolic link to "/opt/radiant/tools/q3map2.x86_64",
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it will use "dirname("/opt/radiant/tools/q3map2.x86_64")/../" as path,
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so it will use "/opt/radiant/" as installPath, which will be expanded later to "/opt/radiant/baseq3" to find paks.
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*/
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bool found = false;
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const char *last = path;
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/* go through each : segment of path */
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while ( !strEmpty( last ) && !found )
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{
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/* null out temp */
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temp.clear();
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/* find next chunk */
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last = strchr( path, ':' );
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if ( last == NULL ) {
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last = path + strlen( path );
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}
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/* found home dir candidate */
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if ( *path == '~' ) {
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temp( homePath );
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path++;
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}
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/* concatenate */
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if ( last > ( path + 1 ) ) {
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temp << StringRange( path, last ) << '/';
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}
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temp << argv0;
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/* verify the path */
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if ( access( temp, X_OK ) == 0 ) {
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found = true;
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}
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path = last + 1;
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}
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}
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/* flake */
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if ( char *real = realpath( temp, nullptr ); real != nullptr ) {
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/*
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if "q3map2" is "/opt/radiant/tools/q3map2",
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installPath is "/opt/radiant"
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*/
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strClear( path_get_last_separator( real ) );
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strClear( path_get_last_separator( real ) );
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installPath = real;
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free( real );
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}
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#endif
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}
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/*
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GetGame() - ydnar
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gets the game_t based on a -game argument
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returns NULL if no match found
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*/
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const game_t *GetGame( const char *arg ){
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/* dummy check */
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if ( strEmptyOrNull( arg ) ) {
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return NULL;
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}
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/* joke */
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if ( striEqual( arg, "quake1" ) ||
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striEqual( arg, "quake2" ) ||
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striEqual( arg, "unreal" ) ||
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striEqual( arg, "ut2k3" ) ||
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striEqual( arg, "dn3d" ) ||
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striEqual( arg, "dnf" ) ||
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striEqual( arg, "hl" ) ) {
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Sys_Printf( "April fools, silly rabbit!\n" );
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exit( 0 );
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}
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/* test it */
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for( const game_t& game : g_games )
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{
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if ( striEqual( arg, game.arg ) )
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return &game;
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}
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/* no matching game */
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Sys_Warning( "Game \"%s\" is unknown.\n", arg );
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HelpGames();
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return NULL;
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}
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inline bool is_unique( const std::vector<CopiedString>& list, const char *string ){
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for( const auto& str : list )
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if( striEqual( str.c_str(), string ) )
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return false;
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return true;
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}
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inline void insert_unique( std::vector<CopiedString>& list, const char *string ){
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if( is_unique( list, string ) )
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list.emplace_back( string );
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}
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/*
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AddBasePath() - ydnar
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adds a base path to the list
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*/
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void AddBasePath( std::vector<CopiedString>& basePaths, const char *path ){
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/* dummy check */
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if ( !strEmptyOrNull( path ) ) {
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/* add it to the list */
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insert_unique( basePaths, StringOutputStream( 256 )( DirectoryCleaned( path ) ) );
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if ( g_enginePath.empty() )
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g_enginePath = basePaths.back();
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}
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}
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/*
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AddHomeBasePath() - ydnar
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adds a base path to the beginning of the list, prefixed by ~/
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*/
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void AddHomeBasePath( std::vector<CopiedString>& basePaths, const char *homePath, const char *homeBasePath ){
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if ( strEmpty( homePath ) ) {
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return;
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}
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/* dummy check */
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if ( strEmptyOrNull( homeBasePath ) ) {
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return;
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}
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StringOutputStream str( 256 );
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/* strip leading dot, if homePath does not end in /. */
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if ( strEqual( homeBasePath, "." ) ) {
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/* -fs_homebase . means that -fs_home is to be used as is */
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str( homePath );
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}
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else if ( strEqualSuffix( homePath, "/." ) ) {
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/* concatenate home dir and path */ /* remove trailing /. of homePath */
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str( StringRange( homePath, strlen( homePath ) - 1 ), homeBasePath );
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}
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else
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{
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/* remove leading . of path */
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if ( homeBasePath[0] == '.' ) {
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++homeBasePath;
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}
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/* concatenate home dir and path */
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str( homePath, '/', homeBasePath );
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}
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/* add it to the beginning of the list */
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const auto clean = StringOutputStream( 256 )( DirectoryCleaned( str ) );
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if( is_unique( basePaths, clean ) )
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basePaths.emplace( basePaths.cbegin(), clean );
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}
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/*
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InitPaths() - ydnar
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cleaned up some of the path initialization code from bsp.c
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will remove any arguments it uses
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*/
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void InitPaths( Args& args ){
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std::vector<CopiedString> basePaths;
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std::vector<CopiedString> gamePaths;
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std::vector<CopiedString> pakPaths;
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CopiedString homePath;
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CopiedString installPath;
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const char *homeBasePath = nullptr;
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const char *baseGame = nullptr;
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StringOutputStream stream( 256 );
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/* note it */
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Sys_FPrintf( SYS_VRB, "--- InitPaths ---\n" );
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/* get the install path for backup */
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LokiInitPaths( args.getArg0(), homePath, installPath );
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/* set game to default (q3a) */
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g_game = &g_games[ 0 ];
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/* parse through the arguments and extract those relevant to paths */
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{
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/* -game */
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while ( args.takeArg( "-game" ) ) {
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g_game = GetGame( args.takeNext() );
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if ( g_game == NULL ) {
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g_game = &g_games[ 0 ];
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}
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}
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/* -fs_forbiddenpath */
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while ( args.takeArg( "-fs_forbiddenpath" ) ) {
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g_strForbiddenDirs.emplace_back( args.takeNext() );
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}
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/* -fs_basepath */
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while ( args.takeArg( "-fs_basepath" ) ) {
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AddBasePath( basePaths, args.takeNext() );
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}
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/* -fs_game */
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while ( args.takeArg( "-fs_game" ) ) {
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insert_unique( gamePaths, stream( DirectoryCleaned( args.takeNext() ) ) );
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}
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/* -fs_basegame */
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while ( args.takeArg( "-fs_basegame" ) ) {
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baseGame = args.takeNext();
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}
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/* -fs_home */
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while ( args.takeArg( "-fs_home" ) ) {
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homePath = args.takeNext();
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}
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/* -fs_homebase */
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while ( args.takeArg( "-fs_homebase" ) ) {
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homeBasePath = args.takeNext();
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}
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/* -fs_homepath - sets both of them */
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while ( args.takeArg( "-fs_homepath" ) ) {
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homePath = args.takeNext();
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homeBasePath = ".";
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}
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/* -fs_pakpath */
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while ( args.takeArg( "-fs_pakpath" ) ) {
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insert_unique( pakPaths, stream( DirectoryCleaned( args.takeNext() ) ) );
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}
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}
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/* add standard game path */
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insert_unique( gamePaths, stream( DirectoryCleaned( baseGame == nullptr? g_game->gamePath : baseGame ) ) );
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/* if there is no base path set, figure it out */
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if ( basePaths.empty() ) {
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/* this is another crappy replacement for SetQdirFromPath() */
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auto argv = args.getVector();
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argv.insert( argv.cbegin(), args.getArg0() );
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for ( auto&& arg : argv )
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{
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/* extract the arg */
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stream( DirectoryCleaned( arg ) );
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Sys_FPrintf( SYS_VRB, "Searching for \"%s\" in \"%s\"...\n", g_game->magic, stream.c_str() );
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/* check for the game's magic word */
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char* found = strIstr( stream.c_str(), g_game->magic );
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if( found ){
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/* now find the next slash and nuke everything after it */
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found = strchr( found, '/' );
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if( found )
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strClear( found );
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/* add this as a base path */
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AddBasePath( basePaths, stream.c_str() );
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if( !basePaths.empty() )
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break;
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}
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}
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/* add install path */
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if ( basePaths.empty() ) {
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AddBasePath( basePaths, installPath.c_str() );
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}
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/* check again */
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if ( basePaths.empty() ) {
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Error( "Failed to find a valid base path." );
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}
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}
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/* this only affects unix */
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AddHomeBasePath( basePaths, homePath.c_str(), homeBasePath != nullptr? homeBasePath : g_game->homeBasePath );
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/* initialize vfs paths */
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/* walk the list of game paths */
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for ( const auto& gamePath : gamePaths )
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{
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/* walk the list of base paths */
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for ( const auto& basePath : basePaths )
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{
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/* create a full path and initialize it */
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vfsInitDirectory( stream( basePath, gamePath ) );
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}
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}
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/* walk the list of pak paths */
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for ( const auto& pakPath : pakPaths )
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{
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/* initialize this pak path */
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vfsInitDirectory( pakPath.c_str() );
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}
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/* done */
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Sys_Printf( "\n" );
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}
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