view src/SDL_getenv.c @ 1133:609c060fd2a2

The MacOSX Carbon/Cocoa/X11 all in one library patch. Relevant emails: To: SDL Developers <sdl@libsdl.org> From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se> Date: Mon, 30 May 2005 23:29:04 +0200 Subject: [SDL] Mac OS X Video Drivers [patch] I've updated/added the Carbon and X11 video drivers to the Mac OS X port of SDL 1.2 (the CVS version), and made the Cocoa driver and runtime *optional*. The default is still Cocoa, and the "Quartz" driver. But you can now also use "toolbox" for Carbon, and "x11" for running with Apple's (or other) X11 server: export SDL_VIDEODRIVER=x11 export SDL_VIDEO_GL_DRIVER=/usr/X11R6/lib/libGL.dylib It also checks if the frameworks are available, by a: #include <Carbon/Carbon.h> or #import <Cocoa/Cocoa.h> (this should make it configure on plain Darwin as well?) Here are the new configure targets: --enable-video-cocoa use Cocoa/Quartz video driver default=yes --enable-video-carbon use Carbon/QuickDraw video driver default=yes --enable-video-x11 use X11 video driver default=no ./configure --enable-video-cocoa --enable-video-carbon --enable-video-x11 \ --x-includes=/usr/X11R6/include --x-libraries=/usr/X11R6/lib The Carbon version is just an updated version of the old SDL driver for Mac OS 9, and could probably be improved... (but it does work, including the Carbon version of SDLmain) If you disable cocoa, you can run with -framework Carbon only, and the C version of SDL_main.c. And if you disable carbon too, you can still use the X11 version which doesn't require SDLmain. I updated the DrawSprocket version, but did not include it. (no blitters or VRAM GWorlds etc. available on OS X anyway) Besides for Mac OS 9, I don't think there's any use for it ? And note that any performance on Mac OS X equals OpenGL anyway... You can get "fair" software SDL results on captured CG displays, but for decent frame rates you need to be using GL for rendering. Finally, here is the patch itself: http://www.algonet.se/~afb/SDL-12CVS-macvideo.patch --anders PS. It says "video", but as usual it applies to mouse/keyboard too. ------ To: A list for developers using the SDL library <sdl@libsdl.org> From: =?ISO-8859-1?Q?Anders_F_Bj=F6rklund?= <afb@algonet.se> Date: Sun, 4 Sep 2005 10:02:15 +0200 Subject: [SDL] Updated Mac patch Updated the previous Mac patch to disable Carbon by default. Also "fixed" the SDL.spec again, so that it builds on Darwin. http://www.algonet.se/~afb/SDL-1.2.9-mac.patch Also applied fine to SDL12 CVS, when I tried it.
author Ryan C. Gordon <icculus@icculus.org>
date Thu, 08 Sep 2005 06:16:14 +0000
parents b8d311d90021
children f098b247299d
line wrap: on
line source

/*
    SDL - Simple DirectMedia Layer
    Copyright (C) 1997-2004 Sam Lantinga

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
    Library General Public License for more details.

    You should have received a copy of the GNU Library General Public
    License along with this library; if not, write to the Free
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

    Sam Lantinga
    slouken@libsdl.org
*/

#ifdef SAVE_RCSID
static char rcsid =
 "@(#) $Id$";
#endif

/* Not all environments have a working getenv()/putenv() */

#ifdef TEST_MAIN
#define NEED_SDL_GETENV
#endif

#include "SDL_getenv.h"

#ifdef NEED_SDL_GETENV

#include <stdlib.h>
#include <string.h>

static char **SDL_env = (char **)0;

/* Put a variable of the form "name=value" into the environment */
int SDL_putenv(const char *variable)
{
	const char *name, *value;
	int added;
	int len, i;
	char **new_env;
	char *new_variable;

	/* A little error checking */
	if ( ! variable ) {
		return(-1);
	}
	name = variable;
	for ( value=variable; *value && (*value != '='); ++value ) {
		/* Keep looking for '=' */ ;
	}
	if ( *value ) {
		++value;
	} else {
		return(-1);
	}

	/* Allocate memory for the variable */
	new_variable = (char *)malloc(strlen(variable)+1);
	if ( ! new_variable ) {
		return(-1);
	}
	strcpy(new_variable, variable);

	/* Actually put it into the environment */
	added = 0;
	i = 0;
	if ( SDL_env ) {
		/* Check to see if it's already there... */
		len = (value - name);
		for ( ; SDL_env[i]; ++i ) {
			if ( strncmp(SDL_env[i], name, len) == 0 ) {
				break;
			}
		}
		/* If we found it, just replace the entry */
		if ( SDL_env[i] ) {
			free(SDL_env[i]);
			SDL_env[i] = new_variable;
			added = 1;
		}
	}

	/* Didn't find it in the environment, expand and add */
	if ( ! added ) {
		new_env = realloc(SDL_env, (i+2)*sizeof(char *));
		if ( new_env ) {
			SDL_env = new_env;
			SDL_env[i++] = new_variable;
			SDL_env[i++] = (char *)0;
			added = 1;
		} else {
			free(new_variable);
		}
	}
	return (added ? 0 : -1);
}

/* Retrieve a variable named "name" from the environment */
char *SDL_getenv(const char *name)
{
	int len, i;
	char *value;

	value = (char *)0;
	if ( SDL_env ) {
		len = strlen(name);
		for ( i=0; SDL_env[i] && !value; ++i ) {
			if ( (strncmp(SDL_env[i], name, len) == 0) &&
			     (SDL_env[i][len] == '=') ) {
				value = &SDL_env[i][len+1];
			}
		}
	}
	return value;
}

#endif /* NEED_GETENV */

#ifdef TEST_MAIN
#include <stdio.h>

int main(int argc, char *argv[])
{
	char *value;

	printf("Checking for non-existent variable... ");
	fflush(stdout);
	if ( ! getenv("EXISTS") ) {
		printf("okay\n");
	} else {
		printf("failed\n");
	}
	printf("Setting FIRST=VALUE1 in the environment... ");
	fflush(stdout);
	if ( putenv("FIRST=VALUE1") == 0 ) {
		printf("okay\n");
	} else {
		printf("failed\n");
	}
	printf("Getting FIRST from the environment... ");
	fflush(stdout);
	value = getenv("FIRST");
	if ( value && (strcmp(value, "VALUE1") == 0) ) {
		printf("okay\n");
	} else {
		printf("failed\n");
	}
	printf("Setting SECOND=VALUE2 in the environment... ");
	fflush(stdout);
	if ( putenv("SECOND=VALUE2") == 0 ) {
		printf("okay\n");
	} else {
		printf("failed\n");
	}
	printf("Getting SECOND from the environment... ");
	fflush(stdout);
	value = getenv("SECOND");
	if ( value && (strcmp(value, "VALUE2") == 0) ) {
		printf("okay\n");
	} else {
		printf("failed\n");
	}
	printf("Setting FIRST=NOVALUE in the environment... ");
	fflush(stdout);
	if ( putenv("FIRST=NOVALUE") == 0 ) {
		printf("okay\n");
	} else {
		printf("failed\n");
	}
	printf("Getting FIRST from the environment... ");
	fflush(stdout);
	value = getenv("FIRST");
	if ( value && (strcmp(value, "NOVALUE") == 0) ) {
		printf("okay\n");
	} else {
		printf("failed\n");
	}
	printf("Checking for non-existent variable... ");
	fflush(stdout);
	if ( ! getenv("EXISTS") ) {
		printf("okay\n");
	} else {
		printf("failed\n");
	}
	return(0);
}
#endif /* TEST_MAIN */