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Moving the command-line parsing into its own function in preparation for splitting out platform-specific code

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git-svn-id: https://svn.code.sf.net/p/freeglut/code/trunk@990 7f0cb862-5218-0410-a997-914c9d46530a
This commit is contained in:
fayjf 2012-01-20 04:38:09 +00:00
parent b5c63cdad2
commit 301df8e9f4
1 changed files with 105 additions and 97 deletions
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202
freeglut/freeglut/src/Common/freeglut_init.c
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@ -322,6 +322,110 @@ static void fghInitialize( const char* displayName )
#endif
void fghParseCommandLineArguments ( int* pargc, char** argv, char **pDisplayName, char **pGeometry )
{
#ifndef _WIN32_WCE
int i, j, argc = *pargc;
{
/* check if GLUT_FPS env var is set */
const char *fps = getenv( "GLUT_FPS" );
if( fps )
{
int interval;
sscanf( fps, "%d", &interval );
if( interval <= 0 )
fgState.FPSInterval = 5000; /* 5000 millisecond default */
else
fgState.FPSInterval = interval;
}
}
*pDisplayName = getenv( "DISPLAY" );
for( i = 1; i < argc; i++ )
{
if( strcmp( argv[ i ], "-display" ) == 0 )
{
if( ++i >= argc )
fgError( "-display parameter must be followed by display name" );
*pDisplayName = argv[ i ];
argv[ i - 1 ] = NULL;
argv[ i ] = NULL;
( *pargc ) -= 2;
}
else if( strcmp( argv[ i ], "-geometry" ) == 0 )
{
if( ++i >= argc )
fgError( "-geometry parameter must be followed by window "
"geometry settings" );
*pGeometry = argv[ i ];
argv[ i - 1 ] = NULL;
argv[ i ] = NULL;
( *pargc ) -= 2;
}
else if( strcmp( argv[ i ], "-direct" ) == 0)
{
if( fgState.DirectContext == GLUT_FORCE_INDIRECT_CONTEXT )
fgError( "parameters ambiguity, -direct and -indirect "
"cannot be both specified" );
fgState.DirectContext = GLUT_FORCE_DIRECT_CONTEXT;
argv[ i ] = NULL;
( *pargc )--;
}
else if( strcmp( argv[ i ], "-indirect" ) == 0 )
{
if( fgState.DirectContext == GLUT_FORCE_DIRECT_CONTEXT )
fgError( "parameters ambiguity, -direct and -indirect "
"cannot be both specified" );
fgState.DirectContext = GLUT_FORCE_INDIRECT_CONTEXT;
argv[ i ] = NULL;
(*pargc)--;
}
else if( strcmp( argv[ i ], "-iconic" ) == 0 )
{
fgState.ForceIconic = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
else if( strcmp( argv[ i ], "-gldebug" ) == 0 )
{
fgState.GLDebugSwitch = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
else if( strcmp( argv[ i ], "-sync" ) == 0 )
{
fgState.XSyncSwitch = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
}
/* Compact {argv}. */
for( i = j = 1; i < *pargc; i++, j++ )
{
/* Guaranteed to end because there are "*pargc" arguments left */
while ( argv[ j ] == NULL )
j++;
if ( i != j )
argv[ i ] = argv[ j ];
}
#endif /* _WIN32_WCE */
}
void fghCloseInputDevices ( void )
{
if ( fgState.JoysticksInitialised )
@ -642,8 +746,6 @@ void FGAPIENTRY glutInit( int* pargc, char** argv )
{
char* displayName = NULL;
char* geometry = NULL;
int i, j, argc = *pargc;
if( fgState.Initialised )
fgError( "illegal glutInit() reinitialization attempt" );
@ -660,101 +762,7 @@ void FGAPIENTRY glutInit( int* pargc, char** argv )
/* Get start time */
fgState.Time = fgSystemTime();
/* check if GLUT_FPS env var is set */
#ifndef _WIN32_WCE
{
const char *fps = getenv( "GLUT_FPS" );
if( fps )
{
int interval;
sscanf( fps, "%d", &interval );
if( interval <= 0 )
fgState.FPSInterval = 5000; /* 5000 millisecond default */
else
fgState.FPSInterval = interval;
}
}
displayName = getenv( "DISPLAY" );
for( i = 1; i < argc; i++ )
{
if( strcmp( argv[ i ], "-display" ) == 0 )
{
if( ++i >= argc )
fgError( "-display parameter must be followed by display name" );
displayName = argv[ i ];
argv[ i - 1 ] = NULL;
argv[ i ] = NULL;
( *pargc ) -= 2;
}
else if( strcmp( argv[ i ], "-geometry" ) == 0 )
{
if( ++i >= argc )
fgError( "-geometry parameter must be followed by window "
"geometry settings" );
geometry = argv[ i ];
argv[ i - 1 ] = NULL;
argv[ i ] = NULL;
( *pargc ) -= 2;
}
else if( strcmp( argv[ i ], "-direct" ) == 0)
{
if( fgState.DirectContext == GLUT_FORCE_INDIRECT_CONTEXT )
fgError( "parameters ambiguity, -direct and -indirect "
"cannot be both specified" );
fgState.DirectContext = GLUT_FORCE_DIRECT_CONTEXT;
argv[ i ] = NULL;
( *pargc )--;
}
else if( strcmp( argv[ i ], "-indirect" ) == 0 )
{
if( fgState.DirectContext == GLUT_FORCE_DIRECT_CONTEXT )
fgError( "parameters ambiguity, -direct and -indirect "
"cannot be both specified" );
fgState.DirectContext = GLUT_FORCE_INDIRECT_CONTEXT;
argv[ i ] = NULL;
(*pargc)--;
}
else if( strcmp( argv[ i ], "-iconic" ) == 0 )
{
fgState.ForceIconic = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
else if( strcmp( argv[ i ], "-gldebug" ) == 0 )
{
fgState.GLDebugSwitch = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
else if( strcmp( argv[ i ], "-sync" ) == 0 )
{
fgState.XSyncSwitch = GL_TRUE;
argv[ i ] = NULL;
( *pargc )--;
}
}
/* Compact {argv}. */
for( i = j = 1; i < *pargc; i++, j++ )
{
/* Guaranteed to end because there are "*pargc" arguments left */
while ( argv[ j ] == NULL )
j++;
if ( i != j )
argv[ i ] = argv[ j ];
}
#endif /* _WIN32_WCE */
fghParseCommandLineArguments ( pargc, argv, &displayName, &geometry );
/*
* Have the display created now. If there wasn't a "-display"