305 lines
10 KiB
C++
305 lines
10 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// Purpose: Helper methods + classes for file access
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//
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//===========================================================================//
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#include "tier2/fileutils.h"
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#include "tier2/tier2.h"
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#include "tier1/strtools.h"
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#include "filesystem.h"
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#include "tier0/icommandline.h"
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#include "tier1/utlbuffer.h"
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// NOTE: This has to be the last file included!
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#include "tier0/memdbgon.h"
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//-----------------------------------------------------------------------------
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// Builds a directory which is a subdirectory of the current mod
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//-----------------------------------------------------------------------------
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void GetModSubdirectory( const char *pSubDir, char *pBuf, int nBufLen )
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{
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// Compute starting directory
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Assert( g_pFullFileSystem->GetSearchPath( "MOD_WRITE", false, NULL, 0 ) < nBufLen );
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if ( g_pFullFileSystem->GetSearchPath( "MOD_WRITE", false, pBuf, nBufLen ) == 0 )
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{
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// if we didn't find MOD_WRITE, back to the old MOD
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Assert( g_pFullFileSystem->GetSearchPath( "MOD", false, NULL, 0 ) < nBufLen );
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g_pFullFileSystem->GetSearchPath( "MOD", false, pBuf, nBufLen );
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}
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char *pSemi = strchr( pBuf, ';' );
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if ( pSemi )
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{
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*pSemi = 0;
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}
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Q_StripTrailingSlash( pBuf );
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if ( pSubDir )
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{
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int nLen = Q_strlen( pSubDir );
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Q_strncat( pBuf, "\\", nBufLen, 1 );
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Q_strncat( pBuf, pSubDir, nBufLen, nLen );
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}
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Q_FixSlashes( pBuf );
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}
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//-----------------------------------------------------------------------------
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// Builds a directory which is a subdirectory of the current mod's *content*
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//-----------------------------------------------------------------------------
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void GetModContentSubdirectory( const char *pSubDir, char *pBuf, int nBufLen )
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{
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char pTemp[ MAX_PATH ];
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GetModSubdirectory( pSubDir, pTemp, sizeof(pTemp) );
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ComputeModContentFilename( pTemp, pBuf, nBufLen );
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}
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//-----------------------------------------------------------------------------
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// Generates a filename under the 'game' subdirectory given a subdirectory of 'content'
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//-----------------------------------------------------------------------------
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void ComputeModFilename( const char *pContentFileName, char *pBuf, size_t nBufLen )
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{
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char pRelativePath[ MAX_PATH ];
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if ( !g_pFullFileSystem->FullPathToRelativePathEx( pContentFileName, "CONTENTROOT", pRelativePath, sizeof(pRelativePath) ) )
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{
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Q_strncpy( pBuf, pContentFileName, (int)nBufLen );
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return;
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}
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char pGameRoot[ MAX_PATH ];
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g_pFullFileSystem->GetSearchPath( "GAMEROOT", false, pGameRoot, sizeof(pGameRoot) );
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char *pSemi = strchr( pGameRoot, ';' );
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if ( pSemi )
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{
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*pSemi = 0;
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}
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Q_ComposeFileName( pGameRoot, pRelativePath, pBuf, (int)nBufLen );
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}
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//-----------------------------------------------------------------------------
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// Generates a filename under the 'content' subdirectory given a subdirectory of 'game'
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//-----------------------------------------------------------------------------
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void ComputeModContentFilename( const char *pGameFileName, char *pBuf, size_t nBufLen )
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{
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char pRelativePath[ MAX_PATH ];
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if ( !g_pFullFileSystem->FullPathToRelativePathEx( pGameFileName, "GAMEROOT", pRelativePath, sizeof(pRelativePath) ) )
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{
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Q_strncpy( pBuf, pGameFileName, (int)nBufLen );
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return;
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}
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char pContentRoot[ MAX_PATH ];
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g_pFullFileSystem->GetSearchPath( "CONTENTROOT", false, pContentRoot, sizeof(pContentRoot) );
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char *pSemi = strchr( pContentRoot, ';' );
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if ( pSemi )
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{
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*pSemi = 0;
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}
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Q_ComposeFileName( pContentRoot, pRelativePath, pBuf, (int)nBufLen );
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}
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//-----------------------------------------------------------------------------
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// Purpose: Generates an Xbox 360 filename from a PC filename
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//-----------------------------------------------------------------------------
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char *CreateX360Filename( const char *pSourceName, char *pTargetName, int targetLen )
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{
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Q_StripExtension( pSourceName, pTargetName, targetLen );
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int idx = Q_strlen( pTargetName );
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// restore extension
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Q_snprintf( pTargetName, targetLen, "%s.360%s", pTargetName, &pSourceName[idx] );
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return pTargetName;
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}
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//-----------------------------------------------------------------------------
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// Purpose: Generates a PC filename from a possible 360 name.
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// Strips the .360. from filename.360.extension.
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// Filenames might have multiple '.', need to be careful and only consider the
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// last true extension. Complex filenames do occur:
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// d:\foo\.\foo.dat
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// d:\zip0.360.zip\foo.360.dat
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// Returns source if no change needs to occur, othwerwise generates and
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// returns target.
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//-----------------------------------------------------------------------------
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char *RestoreFilename( const char *pSourceName, char *pTargetName, int targetLen )
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{
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// find extension
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// scan backward for '.', but not past a seperator
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int end = V_strlen( pSourceName ) - 1;
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while ( end > 0 && pSourceName[end] != '.' && !( pSourceName[end] == '\\' || pSourceName[end] == '/' ) )
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{
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--end;
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}
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if ( end >= 4 && pSourceName[end] == '.' && !V_strncmp( pSourceName + end - 4 , ".360", 4 ) )
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{
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// cull the .360, leave the trailing extension
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end -= 4;
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int length = MIN( end + 1, targetLen );
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V_strncpy( pTargetName, pSourceName, length );
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V_strncat( pTargetName, pSourceName + end + 4, targetLen );
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return pTargetName;
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}
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// source filename is as expected
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return (char *)pSourceName;
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}
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//-----------------------------------------------------------------------------
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// Generate an Xbox 360 file if it doesn't exist or is out of date. This function determines
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// the source and target path and whether the file needs to be generated. The caller provides
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// a callback function to do the actual creation of the 360 file. "pExtraData" is for the caller to
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// pass the address of any data that the callback function may need to access. This function
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// is ONLY to be called by caller's who expect to have 360 versions of their file.
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//-----------------------------------------------------------------------------
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int UpdateOrCreate( const char *pSourceName, char *pTargetName, int targetLen, const char *pPathID, CreateCallback_t pfnCreate, bool bForce, void *pExtraData )
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{
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if ( pTargetName )
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{
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// caller could supply source as PC or 360 name, we want the PC filename
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char szFixedSourceName[MAX_PATH];
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pSourceName = RestoreFilename( pSourceName, szFixedSourceName, sizeof( szFixedSourceName ) );
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// caller wants us to provide 360 named version of source
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CreateX360Filename( pSourceName, pTargetName, targetLen );
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}
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// no conversion are performed by the game at runtime anymore
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// SMB access was removed by the XDK for Vista....
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return UOC_NOT_CREATED;
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}
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//-----------------------------------------------------------------------------
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// Returns the search path as a list of paths
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//-----------------------------------------------------------------------------
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void GetSearchPath( CUtlVector< CUtlString > &path, const char *pPathID )
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{
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int nMaxLen = g_pFullFileSystem->GetSearchPath( pPathID, false, NULL, 0 );
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char *pBuf = (char*)stackalloc( nMaxLen );
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g_pFullFileSystem->GetSearchPath( pPathID, false, pBuf, nMaxLen );
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char *pSemi;
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while ( NULL != ( pSemi = strchr( pBuf, ';' ) ) )
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{
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*pSemi = 0;
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path.AddToTail( pBuf );
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pBuf = pSemi + 1;
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}
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path.AddToTail( pBuf );
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}
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//-----------------------------------------------------------------------------
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// Given file name in the current dir generate a full path to it.
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//-----------------------------------------------------------------------------
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bool GenerateFullPath( const char *pFileName, char const *pPathID, char *pBuf, int nBufLen )
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{
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if ( V_IsAbsolutePath( pFileName ) )
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{
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V_strncpy( pBuf, pFileName, nBufLen );
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return true;
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}
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const char *pFullPath = g_pFullFileSystem->RelativePathToFullPath( pFileName, pPathID, pBuf, nBufLen );
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if ( pFullPath && Q_IsAbsolutePath( pFullPath ) )
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return true;
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char pDir[ MAX_PATH ];
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if ( !g_pFullFileSystem->GetCurrentDirectory( pDir, sizeof( pDir ) ) )
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return false;
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V_ComposeFileName( pDir, pFileName, pBuf, nBufLen );
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V_RemoveDotSlashes( pBuf );
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return true;
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}
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//-----------------------------------------------------------------------------
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// Builds a list of all files under a directory with a particular extension
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//-----------------------------------------------------------------------------
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void AddFilesToList( CUtlVector< CUtlString > &list, const char *pDirectory, const char *pPathID, const char *pExtension )
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{
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char pSearchString[MAX_PATH];
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Q_snprintf( pSearchString, MAX_PATH, "%s\\*", pDirectory );
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bool bIsAbsolute = Q_IsAbsolutePath( pDirectory );
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// get the list of files
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FileFindHandle_t hFind;
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const char *pFoundFile = g_pFullFileSystem->FindFirstEx( pSearchString, pPathID, &hFind );
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// add all the items
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CUtlVector< CUtlString > subDirs;
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for ( ; pFoundFile; pFoundFile = g_pFullFileSystem->FindNext( hFind ) )
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{
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char pChildPath[MAX_PATH];
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Q_snprintf( pChildPath, MAX_PATH, "%s\\%s", pDirectory, pFoundFile );
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if ( g_pFullFileSystem->FindIsDirectory( hFind ) )
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{
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if ( Q_strnicmp( pFoundFile, ".", 2 ) && Q_strnicmp( pFoundFile, "..", 3 ) )
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{
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subDirs.AddToTail( pChildPath );
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}
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continue;
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}
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// Check the extension matches
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const char *pExt = Q_GetFileExtension( pFoundFile );
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if ( !pExt || Q_stricmp( pExt, pExtension ) != 0 )
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continue;
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char pFullPathBuf[MAX_PATH];
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char *pFullPath = pFullPathBuf;
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if ( !bIsAbsolute )
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{
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g_pFullFileSystem->RelativePathToFullPath( pChildPath, pPathID, pFullPathBuf, sizeof(pFullPathBuf) );
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}
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else
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{
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pFullPath = pChildPath;
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}
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V_strlower( pFullPath );
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Q_FixSlashes( pFullPath );
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list.AddToTail( pFullPath );
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}
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g_pFullFileSystem->FindClose( hFind );
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int nCount = subDirs.Count();
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for ( int i = 0; i < nCount; ++i )
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{
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AddFilesToList( list, subDirs[i], pPathID, pExtension );
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}
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}
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void CBaseFile::ReadLines( CUtlStringList &lineList, int nMaxLineLength )
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{
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char *pLine = ( char * ) stackalloc( nMaxLineLength );
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while( ReadLine( pLine, nMaxLineLength ) )
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{
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char *pEOL = strchr( pLine, '\n' ); // kill the \n
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if ( pEOL )
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*pEOL = 0;
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lineList.CopyAndAddToTail( pLine );
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}
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}
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void CBaseFile::ReadFile( CUtlBuffer &fileData )
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{
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int nFileSize = Size();
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fileData.EnsureCapacity( Size() );
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int nSize = Read( fileData.Base(), nFileSize );
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fileData.SeekPut( CUtlBuffer::SEEK_HEAD, nSize );
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}
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