497 lines
11 KiB
497 lines
11 KiB
/* |
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VFileSystem009.h - C++ interface for filesystem_stdio |
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Copyright (C) 2022 Alibek Omarov |
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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, either version 3 of the License, or |
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(at your option) any later version. |
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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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#include <string.h> |
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#include <stdio.h> |
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#include <time.h> |
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#include <stdarg.h> |
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#include ALLOCA_H |
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#include "crtlib.h" |
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#include "filesystem.h" |
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#include "filesystem_internal.h" |
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#include "VFileSystem009.h" |
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#if __cplusplus < 201103L |
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#define override |
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#endif |
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// GoldSrc Directories and ID |
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// GAME gamedir |
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// GAMECONFIG gamedir (rodir integration?) |
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// GAMEDOWNLOAD gamedir_downloads (gamedir/downloads for us) |
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// GAME_FALLBACK liblist.gam's fallback_dir |
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// ROOT and BASE rootdir |
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// PLATFORM platform |
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// CONFIG platform/config |
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static inline qboolean IsIdGamedir( const char *id ) |
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{ |
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return !Q_strcmp( id, "GAME" ) || |
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!Q_strcmp( id, "GAMECONFIG" ) || |
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!Q_strcmp( id, "GAMEDOWNLOAD" ); |
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} |
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static inline const char* IdToDir( const char *id ) |
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{ |
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if( !Q_strcmp( id, "GAME" )) |
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return GI->gamefolder; |
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else if( !Q_strcmp( id, "GAMEDOWNLOAD" )) |
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return va( "%s/downloaded", GI->gamefolder ); |
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else if( !Q_strcmp( id, "GAMECONFIG" )) |
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return fs_writedir; // full path here so it's totally our write allowed directory |
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else if( !Q_strcmp( id, "PLATFORM" )) |
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return "platform"; // stub |
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else if( !Q_strcmp( id, "CONFIG" )) |
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return "platform/config"; // stub |
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else // ROOT || BASE |
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return fs_rootdir; // give at least root directory |
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} |
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static inline void CopyAndFixSlashes( char *p, const char *in ) |
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{ |
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Q_strcpy( p, in ); |
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COM_FixSlashes( p ); |
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} |
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class CXashFS : public IVFileSystem009 |
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{ |
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private: |
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class CSearchState |
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{ |
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public: |
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CSearchState( CSearchState **head, search_t *search ) : |
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next( *head ), search( search ), index( 0 ) |
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{ |
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if( *head ) |
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handle = (*head)->handle + 1; |
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else handle = 0; |
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*head = this; |
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} |
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~CSearchState() |
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{ |
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Mem_Free( search ); |
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} |
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CSearchState *next; |
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search_t *search; |
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int index; |
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FileFindHandle_t handle; |
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}; |
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CSearchState *searchHead; |
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CSearchState *GetSearchStateByHandle( FileFindHandle_t handle ) |
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{ |
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for( CSearchState *state = searchHead; state; state = state->next ) |
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{ |
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if( state->handle == handle ) |
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{ |
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return state; |
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} |
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} |
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Con_DPrintf( "Can't find search state by handle %d\n", handle ); |
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return NULL; |
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} |
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public: |
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CXashFS() : searchHead( NULL ) |
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{ |
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} |
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void RemoveAllSearchPaths() override |
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{ |
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FS_ClearSearchPath(); |
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} |
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void AddSearchPath( const char *path, const char *id ) override |
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{ |
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char *p = (char *)alloca( Q_strlen( path ) + 1 ); |
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CopyAndFixSlashes( p, path ); |
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FS_AddGameDirectory( p, FS_CUSTOM_PATH ); |
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} |
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void AddSearchPathNoWrite( const char *path, const char *id ) override |
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{ |
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char *p = (char *)alloca( Q_strlen( path ) + 1 ); |
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CopyAndFixSlashes( p, path ); |
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FS_AddGameDirectory( p, FS_NOWRITE_PATH | FS_CUSTOM_PATH ); |
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} |
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bool RemoveSearchPath( const char *id ) override |
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{ |
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// TODO: |
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return true; |
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} |
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void RemoveFile( const char *path, const char *id ) override |
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{ |
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FS_Delete( path ); // FS_Delete is aware of slashes |
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} |
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void CreateDirHierarchy( const char *path, const char *id ) override |
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{ |
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FS_CreatePath( va( "%s/%s", IdToDir( id ), path )); // FS_CreatePath is aware of slashes |
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} |
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bool FileExists( const char *path ) override |
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{ |
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char *p = (char *)alloca( Q_strlen( path ) + 1 ); |
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CopyAndFixSlashes( p, path ); |
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return FS_FileExists( p, false ); |
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} |
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bool IsDirectory( const char *path ) override |
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{ |
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char *p = (char *)alloca( Q_strlen( path ) + 1 ); |
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CopyAndFixSlashes( p, path ); |
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return FS_SysFolderExists( p ); |
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} |
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FileHandle_t Open( const char *path, const char *mode, const char *id ) override |
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{ |
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char *p = (char *)alloca( Q_strlen( path ) + 1 ); |
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CopyAndFixSlashes( p, path ); |
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file_t *fd = FS_Open( p, mode, IsIdGamedir( id ) ); |
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return fd; |
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} |
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void Close( FileHandle_t handle ) override |
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{ |
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FS_Close( (file_t *)handle ); |
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} |
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void Seek( FileHandle_t handle, int offset, FileSystemSeek_t whence ) override |
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{ |
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int whence_ = SEEK_SET; |
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switch( whence ) |
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{ |
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case FILESYSTEM_SEEK_HEAD: whence_ = SEEK_SET; break; |
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case FILESYSTEM_SEEK_CURRENT: whence_ = SEEK_CUR; break; |
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case FILESYSTEM_SEEK_TAIL: whence_ = SEEK_END; break; |
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} |
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FS_Seek( (file_t *)handle, offset, whence_ ); |
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} |
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unsigned int Tell( FileHandle_t handle ) override |
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{ |
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return FS_Tell( (file_t *)handle ); |
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} |
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unsigned int Size( FileHandle_t handle ) override |
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{ |
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file_t *fd = (file_t *)handle; |
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return fd->real_length; |
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} |
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unsigned int Size( const char *path ) override |
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{ |
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char *p = (char *)alloca( Q_strlen( path ) + 1 ); |
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CopyAndFixSlashes( p, path ); |
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return FS_FileSize( p, false ); |
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} |
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long int GetFileTime( const char *path ) override |
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{ |
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char *p = (char *)alloca( Q_strlen( path ) + 1 ); |
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CopyAndFixSlashes( p, path ); |
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return FS_FileTime( p, false ); |
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} |
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void FileTimeToString( char *p, int size, long int time ) override |
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{ |
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time_t curtime = time; |
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char *buf = ctime( &curtime ); |
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Q_strncpy( p, buf, size ); |
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} |
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bool IsOk( FileHandle_t handle ) override |
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{ |
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return !FS_Eof( (file_t *)handle ); |
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} |
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void Flush( FileHandle_t handle ) override |
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{ |
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FS_Flush( (file_t *)handle ); |
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} |
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bool EndOfFile( FileHandle_t handle ) override |
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{ |
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return FS_Eof( (file_t *)handle ); |
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} |
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int Read( void *buf, int size, FileHandle_t handle ) override |
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{ |
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return FS_Read( (file_t *)handle, buf, size ); |
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} |
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int Write( const void *buf, int size, FileHandle_t handle ) override |
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{ |
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return FS_Write( (file_t *)handle, buf, size ); |
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} |
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char *ReadLine( char *buf, int size, FileHandle_t handle ) override |
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{ |
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int c = FS_Gets( (file_t *)handle, (byte*)buf, size ); |
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return c >= 0 ? buf : NULL; |
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} |
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int FPrintf( FileHandle_t handle, char *fmt, ... ) override |
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{ |
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va_list ap; |
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int ret; |
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va_start( ap, fmt ); |
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ret = FS_VPrintf( (file_t *)handle, fmt, ap ); |
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va_end( ap ); |
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return ret; |
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} |
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void * GetReadBuffer(FileHandle_t, int *size, bool) override |
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{ |
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// deprecated by Valve |
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*size = 0; |
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return NULL; |
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} |
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void ReleaseReadBuffer(FileHandle_t, void *) override |
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{ |
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// deprecated by Valve |
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return; |
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} |
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const char *FindFirst(const char *pattern, FileFindHandle_t *handle, const char *id) override |
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{ |
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if( !handle || !pattern ) |
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return NULL; |
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char *p = (char *)alloca( Q_strlen( pattern ) + 1 ); |
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CopyAndFixSlashes( p, pattern ); |
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search_t *search = FS_Search( p, true, IsIdGamedir( id )); |
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if( !search ) |
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return NULL; |
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CSearchState *state = new CSearchState( &searchHead, search ); |
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*handle = state->handle; |
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return state->search->filenames[0]; |
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} |
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const char *FindNext( FileFindHandle_t handle ) override |
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{ |
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CSearchState *state = GetSearchStateByHandle( handle ); |
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if( !state ) return NULL; |
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if( state->index + 1 >= state->search->numfilenames ) |
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return NULL; |
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return state->search->filenames[++state->index]; |
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} |
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bool FindIsDirectory( FileFindHandle_t handle ) override |
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{ |
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CSearchState *state = GetSearchStateByHandle( handle ); |
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if( !state ) |
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return false; |
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if( state->index >= state->search->numfilenames ) |
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return false; |
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return IsDirectory( state->search->filenames[state->index] ); |
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} |
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void FindClose( FileFindHandle_t handle ) override |
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{ |
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for( CSearchState *state = searchHead, **prev = NULL; |
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state; |
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*prev = state, state = state->next ) |
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{ |
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if( state->handle == handle ) |
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{ |
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if( prev ) |
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(*prev)->next = state->next; |
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else searchHead = state->next; |
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delete state; |
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return; |
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} |
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} |
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Con_DPrintf( "FindClose: Can't find search state by handle %d\n", handle ); |
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return; |
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} |
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const char * GetLocalPath( const char *name, char *buf, int size ) override |
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{ |
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if( !name ) return NULL; |
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char *p = (char *)alloca( Q_strlen( name ) + 1 ); |
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CopyAndFixSlashes( p, name ); |
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#if !XASH_WIN32 |
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if( p[0] == '/' ) |
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#else |
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if( Q_strchr( p, ':' )) |
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#endif |
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{ |
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Q_strncpy( buf, p, size ); |
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return buf; |
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} |
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const char *fullpath = FS_GetDiskPath( p, false ); |
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if( !fullpath ) |
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return NULL; |
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Q_strncpy( buf, fullpath, size ); |
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return buf; |
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} |
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char *ParseFile( char *buf, char *token, bool *quoted ) override |
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{ |
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qboolean qquoted; |
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char *p = COM_ParseFileSafe( buf, token, PFILE_FS_TOKEN_MAX_LENGTH, 0, NULL, &qquoted ); |
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if( quoted ) *quoted = qquoted; |
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return p; |
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} |
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bool FullPathToRelativePath( const char *path, char *out ) override |
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{ |
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if( !COM_CheckString( path )) |
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{ |
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*out = 0; |
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return false; |
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} |
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char *p = (char *)alloca( Q_strlen( path ) + 1 ); |
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CopyAndFixSlashes( p, path ); |
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searchpath_t *sp; |
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for( sp = fs_searchpaths; sp; sp = sp->next ) |
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{ |
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size_t splen = Q_strlen( sp->filename ); |
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if( !Q_strnicmp( sp->filename, p, splen )) |
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{ |
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Q_strcpy( out, p + splen + 1 ); |
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return true; |
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} |
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} |
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Q_strcpy( out, p ); |
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return false; |
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} |
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bool GetCurrentDirectory( char *p, int size ) override |
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{ |
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Q_strncpy( p, fs_rootdir, size ); |
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return true; |
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} |
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void PrintOpenedFiles() override |
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{ |
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// we don't track this yet |
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return; |
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} |
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void SetWarningFunc(void (*)(const char *, ...)) override |
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{ |
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// TODO: |
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return; |
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} |
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void SetWarningLevel(FileWarningLevel_t) override |
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{ |
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// TODO: |
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return; |
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} |
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int SetVBuf( FileHandle_t handle, char *buf, int mode, long int size ) override |
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{ |
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// TODO: |
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return 0; |
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} |
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void GetInterfaceVersion(char *p, int size) override |
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{ |
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Q_strncpy( p, "Stdio", size ); |
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} |
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bool AddPackFile( const char *path, const char *id ) override |
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{ |
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char *p = va( "%s/%s", IdToDir( id ), path ); |
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CopyAndFixSlashes( p, path ); |
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return !!FS_AddPak_Fullpath( p, NULL, FS_CUSTOM_PATH ); |
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} |
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FileHandle_t OpenFromCacheForRead( const char *path , const char *mode, const char *id ) override |
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{ |
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char *p = (char *)alloca( Q_strlen( path ) + 1 ); |
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CopyAndFixSlashes( p, path ); |
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return FS_OpenReadFile( p, mode, IsIdGamedir( id )); |
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} |
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// stubs |
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void Mount() override {} |
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void Unmount() override {} |
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void GetLocalCopy(const char *) override {} |
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void LogLevelLoadStarted(const char *) override {} |
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void LogLevelLoadFinished(const char *) override {} |
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void CancelWaitForResources(WaitForResourcesHandle_t) override {} |
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int HintResourceNeed(const char *, int) override { return 0; } |
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WaitForResourcesHandle_t WaitForResources(const char *) override { return 0; } |
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int PauseResourcePreloading() override { return 0; } |
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int ResumeResourcePreloading() override { return 0; } |
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bool IsAppReadyForOfflinePlay(int) override { return true; } |
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bool IsFileImmediatelyAvailable(const char *) override { return true; } |
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bool GetWaitForResourcesProgress(WaitForResourcesHandle_t, float *pProgress, bool *pOverride) override |
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{ |
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if( pProgress ) *pProgress = 0; |
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if( pOverride ) *pOverride = true; |
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return false; |
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} |
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} g_VFileSystem009; |
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extern "C" void EXPORT *CreateInterface( const char *interface, int *retval ) |
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{ |
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if( !Q_strcmp( interface, "VFileSystem009" )) |
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{ |
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if( retval ) *retval = 0; |
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return &g_VFileSystem009; |
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} |
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if( retval ) *retval = 1; |
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return NULL; |
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}
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