mirror of
https://github.com/nillerusr/source-engine.git
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437 lines
9.0 KiB
C++
437 lines
9.0 KiB
C++
//========= Copyright Valve Corporation, All rights reserved. ============//
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//
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// SYS_UTILS.C
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//
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//=====================================================================================//
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#include "sys_utils.h"
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//-----------------------------------------------------------------------------
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// Sys_SplitRegistryKey
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//
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//-----------------------------------------------------------------------------
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static BOOL Sys_SplitRegistryKey( const CHAR *key, CHAR *key0, int key0Len, CHAR *key1, int key1Len )
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{
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if ( !key )
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return false;
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int len = (int)strlen( key );
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if ( !len )
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return false;
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int Start = -1;
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for ( int i = len-1; i >= 0; i-- )
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{
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if ( key[i] == '\\' )
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break;
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else
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Start=i;
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}
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if ( Start == -1 )
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return false;
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_snprintf( key0, Start, key );
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key0[Start] = '\0';
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_snprintf( key1, ( len-Start )+1, key+Start );
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key1[( len-Start )+1] = '\0';
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return true;
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}
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//-----------------------------------------------------------------------------
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// Sys_SetRegistryString
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//
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//-----------------------------------------------------------------------------
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BOOL Sys_SetRegistryString( const CHAR *key, const CHAR *value )
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{
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HKEY hKey;
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CHAR key0[256];
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CHAR key1[256];
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HKEY hSlot = HKEY_CURRENT_USER;
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if ( !strncmp( key, "HKEY_LOCAL_MACHINE", 18 ) )
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{
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hSlot = HKEY_LOCAL_MACHINE;
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key += 19;
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}
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else if ( !strncmp( key, "HKEY_CURRENT_USER", 17 ) )
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{
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hSlot = HKEY_CURRENT_USER;
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key += 18;
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}
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if ( !Sys_SplitRegistryKey( key, key0, sizeof( key0 ), key1, sizeof( key1 ) ) )
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return false;
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if ( RegCreateKeyEx( hSlot,key0,NULL,NULL,REG_OPTION_NON_VOLATILE, value ? KEY_WRITE : KEY_ALL_ACCESS,NULL,&hKey,NULL )!=ERROR_SUCCESS )
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return false;
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if ( RegSetValueEx( hKey, key1, NULL, REG_SZ, ( UCHAR* )value, (int)strlen( value ) + 1 ) != ERROR_SUCCESS )
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{
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RegCloseKey( hKey );
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return false;
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}
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// success
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RegCloseKey( hKey );
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return true;
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}
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//-----------------------------------------------------------------------------
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// Sys_GetRegistryString
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//
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//-----------------------------------------------------------------------------
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BOOL Sys_GetRegistryString( const CHAR *key, CHAR *value, const CHAR* defValue, int valueLen )
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{
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HKEY hKey;
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CHAR key0[256];
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CHAR key1[256];
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if ( defValue )
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_snprintf( value, valueLen, defValue );
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HKEY hSlot = HKEY_CURRENT_USER;
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if ( !strncmp( key, "HKEY_LOCAL_MACHINE", 18 ) )
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{
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hSlot = HKEY_LOCAL_MACHINE;
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key += 19;
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}
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else if ( !strncmp( key, "HKEY_CURRENT_USER", 17 ) )
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{
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hSlot = HKEY_CURRENT_USER;
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key += 18;
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}
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if ( !Sys_SplitRegistryKey( key,key0,256,key1,256 ) )
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return false;
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if ( RegOpenKeyEx( hSlot,key0,NULL,KEY_READ,&hKey )!=ERROR_SUCCESS )
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return false;
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unsigned long len=valueLen;
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if ( RegQueryValueEx( hKey,key1,NULL,NULL,( UCHAR* )value,&len )!=ERROR_SUCCESS )
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{
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RegCloseKey( hKey );
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return false;
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}
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// success
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RegCloseKey( hKey );
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return true;
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}
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//-----------------------------------------------------------------------------
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// Sys_SetRegistryInteger
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//
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//-----------------------------------------------------------------------------
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BOOL Sys_SetRegistryInteger( const CHAR *key, int value )
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{
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HKEY hKey;
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CHAR key0[256];
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CHAR key1[256];
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HKEY hSlot = HKEY_CURRENT_USER;
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if ( !strncmp( key, "HKEY_LOCAL_MACHINE", 18 ) )
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{
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hSlot = HKEY_LOCAL_MACHINE;
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key += 19;
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}
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else if ( !strncmp( key, "HKEY_CURRENT_USER", 17 ) )
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{
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hSlot = HKEY_CURRENT_USER;
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key += 18;
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}
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if ( !Sys_SplitRegistryKey( key,key0,256,key1,256 ) )
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return false;
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if ( RegCreateKeyEx( hSlot, key0, NULL, NULL, REG_OPTION_NON_VOLATILE, KEY_WRITE, NULL, &hKey, NULL )!=ERROR_SUCCESS )
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return false;
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if ( RegSetValueEx( hKey, key1, NULL, REG_DWORD, ( UCHAR* )&value, 4 )!=ERROR_SUCCESS )
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{
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RegCloseKey( hKey );
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return false;
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}
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// success
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RegCloseKey( hKey );
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return true;
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}
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//-----------------------------------------------------------------------------
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// Sys_GetRegistryInteger
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//
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//-----------------------------------------------------------------------------
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BOOL Sys_GetRegistryInteger( const CHAR *key, int defValue, int &value )
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{
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HKEY hKey;
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CHAR key0[256];
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CHAR key1[256];
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value = defValue;
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HKEY hSlot = HKEY_CURRENT_USER;
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if ( !strncmp( key, "HKEY_LOCAL_MACHINE", 18 ) )
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{
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hSlot = HKEY_LOCAL_MACHINE;
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key += 19;
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}
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else if ( !strncmp( key, "HKEY_CURRENT_USER", 17 ) )
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{
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hSlot = HKEY_CURRENT_USER;
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key += 18;
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}
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if ( !Sys_SplitRegistryKey( key, key0, 256, key1, 256 ) )
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return false;
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if ( RegOpenKeyEx( hSlot, key0, NULL, KEY_READ, &hKey ) != ERROR_SUCCESS )
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return false;
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unsigned long len=4;
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if ( RegQueryValueEx( hKey, key1, NULL, NULL, ( UCHAR* )&value, &len ) != ERROR_SUCCESS )
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{
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RegCloseKey( hKey );
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return false;
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}
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// success
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RegCloseKey( hKey );
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return true;
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}
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//-----------------------------------------------------------------------------
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// Sys_NormalizePath
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//
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//-----------------------------------------------------------------------------
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void Sys_NormalizePath( CHAR* path, bool forceToLower )
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{
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int srcLen = (int)strlen( path );
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for ( int i=0; i<srcLen; i++ )
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{
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if ( path[i] == '/' )
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path[i] = '\\';
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else if ( forceToLower && ( path[i] >= 'A' && path[i] <= 'Z' ) )
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path[i] = path[i] - 'A' + 'a';
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}
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}
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//-----------------------------------------------------------------------------
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// Sys_SkipWhitespace
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//
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//-----------------------------------------------------------------------------
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CHAR* Sys_SkipWhitespace( CHAR *data, BOOL *hasNewLines, int* pNumLines )
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{
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int c;
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while( ( c = *data ) <= ' ' )
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{
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if ( c == '\n' )
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{
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if ( pNumLines )
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(*pNumLines)++;
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if ( hasNewLines )
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*hasNewLines = true;
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}
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else if ( !c )
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return ( NULL );
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data++;
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}
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return ( data );
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}
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//-----------------------------------------------------------------------------
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// Sys_PeekToken
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//
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//-----------------------------------------------------------------------------
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CHAR* Sys_PeekToken( CHAR *dataptr, BOOL bAllowLineBreaks )
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{
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CHAR *saved;
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CHAR *pToken;
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saved = dataptr;
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pToken = Sys_GetToken( &saved, bAllowLineBreaks, NULL );
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return pToken;
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}
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//-----------------------------------------------------------------------------
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// Sys_GetToken
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//
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//-----------------------------------------------------------------------------
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CHAR* Sys_GetToken( CHAR** dataptr, BOOL allowLineBreaks, int* pNumLines )
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{
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CHAR c;
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int len;
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BOOL hasNewLines;
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CHAR* data;
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static CHAR token[MAX_SYSTOKENCHARS];
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c = 0;
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data = *dataptr;
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len = 0;
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token[0] = 0;
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hasNewLines = false;
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// make sure incoming data is valid
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if ( !data )
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{
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*dataptr = NULL;
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return ( token );
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}
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for ( ;; )
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{
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// skip whitespace
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data = Sys_SkipWhitespace( data, &hasNewLines, pNumLines );
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if ( !data )
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{
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*dataptr = NULL;
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return ( token );
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}
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if ( hasNewLines && !allowLineBreaks )
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{
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*dataptr = data;
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return ( token );
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}
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c = *data;
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if ( c == '/' && data[1] == '/' )
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{
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// skip double slash comments
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data += 2;
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while ( *data && *data != '\n' )
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data++;
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if ( *data && *data == '\n' )
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{
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data++;
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if ( pNumLines )
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(*pNumLines)++;
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}
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}
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else if ( c =='/' && data[1] == '*' )
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{
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// skip /* */ comments
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data += 2;
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while ( *data && ( *data != '*' || data[1] != '/' ) )
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{
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if ( *data == '\n' && pNumLines )
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(*pNumLines)++;
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data++;
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}
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if ( *data )
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data += 2;
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}
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else
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break;
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}
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// handle quoted strings
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if ( c == '\"' || c == '<' )
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{
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data++;
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for ( ;; )
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{
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c = *data++;
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if ( c == '\"' || c == '>' || !c )
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{
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token[len] = 0;
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*dataptr = ( CHAR* )data;
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return ( token );
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}
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if ( len < MAX_SYSTOKENCHARS )
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token[len++] = c;
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}
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}
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// parse a regular word
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do
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{
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if ( len < MAX_SYSTOKENCHARS )
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token[len++] = c;
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data++;
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c = *data;
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}
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while ( c > ' ' );
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if ( len >= MAX_SYSTOKENCHARS )
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len = 0;
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token[len] = '\0';
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*dataptr = (CHAR*)data;
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return token;
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}
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//-----------------------------------------------------------------------------
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// Sys_SkipBracedSection
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//
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// The next token should be an open brace.
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// Skips until a matching close brace is found.
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// Internal brace depths are properly skipped.
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//-----------------------------------------------------------------------------
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void Sys_SkipBracedSection( CHAR** dataptr, int* numlines )
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{
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CHAR* token;
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int depth;
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depth = 0;
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do
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{
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token = Sys_GetToken( dataptr, true, numlines );
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if ( token[1] == '\0' )
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{
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if ( token[0] == '{' )
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depth++;
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else if ( token[0] == '}' )
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depth--;
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}
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}
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while( depth && *dataptr );
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}
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//-----------------------------------------------------------------------------
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// Sys_SkipRestOfLine
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//
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//-----------------------------------------------------------------------------
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void Sys_SkipRestOfLine( CHAR** dataptr, int* numlines )
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{
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CHAR* p;
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int c;
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p = *dataptr;
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while ( ( c = *p++ ) != '\0' )
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{
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if ( c == '\n' )
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{
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if ( numlines )
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( *numlines )++;
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break;
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}
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}
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*dataptr = p;
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}
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void Sys_StripQuotesFromToken( CHAR *pToken )
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{
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int len;
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len = (int)strlen( pToken );
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if ( len >= 2 && pToken[0] == '\"' )
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{
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memcpy( pToken, pToken+1, len-1 );
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pToken[len-2] = '\0';
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}
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}
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