init.c

Mrxvt是一个小巧

	"rgb:6c/6c/6c",
	"rgb:76/76/76",
	"rgb:80/80/80",
	"rgb:8a/8a/8a",
	"rgb:94/94/94",
	"rgb:9e/9e/9e",
	"rgb:a8/a8/a8",
	"rgb:b2/b2/b2",
	"rgb:bc/bc/bc",
	"rgb:c6/c6/c6",
	"rgb:d0/d0/d0",
	"rgb:da/da/da",
	"rgb:e4/e4/e4",
	"rgb:ee/ee/ee",
#endif	/* TTY_256COLOR */
#ifndef NO_CURSORCOLOR
	COLOR_CURSOR_BACKGROUND,
	COLOR_CURSOR_FOREGROUND,
#endif				/* ! NO_CURSORCOLOR */
	NULL,			/* Color_pointer				*/
	NULL,			/* Color_border					*/
	NULL,			/* Color_ufbg					*/
#ifndef NO_BOLD_UNDERLINE_REVERSE
	NULL,			/* Color_BD						*/
	NULL,			/* Color_UL						*/
	NULL,			/* Color_RV						*/
#endif				/* ! NO_BOLD_UNDERLINE_REVERSE	*/
#ifdef OPTION_HC
	NULL,			/* Color_HL						*/
#endif
#ifdef KEEP_SCROLLCOLOR
	COLOR_SCROLLBAR,
	COLOR_SCROLLTROUGH,
#endif				/* KEEP_SCROLLCOLOR */
#ifdef TINTING_SUPPORT
# ifdef HAVE_LIBXRENDER
	"rgb:00/00/00",
# else
	"rgb:ff/ff/ff",
# endif
#endif
};


/*
** MUST sync with rxvt.h:enum XA_XXXX
*/
const char *const xa_names[NUM_XA] = {
	"COMPOUND_TEXT",
	"UTF8_STRING",
	"TEXT",
	"MULTIPLE",	
	"TARGETS",	
	"TIMESTAMP",
	"VT_SELECTION",
	"INCR",
	"WM_DELETE_WINDOW",
	"_NET_WM_DESKTOP",
	"_WIN_WORKSPACE",
	"_NET_WM_NAME",
	"_NET_WM_ICON_NAME",
	"WM_CLIENT_LEADER",
	"_NET_WM_WINDOW_OPACITY",
#ifndef NO_FRILLS
	"_NET_WM_PID",
#endif
#ifdef HAVE_X11_SM_SMLIB_H
	"SM_CLIENT_ID",
#endif
#ifdef USE_XIM
	"WM_LOCALE_NAME",
#endif
#ifdef TRANSPARENT
	"_XROOTPMAP_ID",
	"_XSETROOT_ID",
#endif
#ifdef OFFIX_DND
	"DndProtocol",
	"DndSelection",
#endif
	"CLIPBOARD"
};

/* substitute system functions */
#if defined(OS_SVR4) && ! defined(_POSIX_VERSION)
/* INTPROTO */
int
rxvt_getdtablesize(void)
{
	struct rlimit   rlim;

	getrlimit(RLIMIT_NOFILE, &rlim);
	return rlim.rlim_cur;
}
#endif


/* EXTPROTO */
int
rxvt_init_vars(rxvt_t *r)
{
	register int		i;
	struct rxvt_hidden*	h;


	MEMSET(r, 0, sizeof(rxvt_t));

	h = r->h = (struct rxvt_hidden *)rxvt_calloc(1, sizeof(struct rxvt_hidden));

	for (i = 0; i < MAX_PAGES; i ++)
	{
		/* Initialize vts_idx for each term_t structure */
		r->vterm[i].vts_idx = -1;
		/* Initialize each vts pointer */
		r->vts[i] = NULL;
	}

	r->PixColors = (unsigned long*) rxvt_malloc(
		sizeof(unsigned long) * (TOTAL_COLORS));
#ifdef OFF_FOCUS_FADING
	r->PixColorsUnfocus = (unsigned long*) rxvt_malloc(
		sizeof(unsigned long) * (TOTAL_COLORS));
#endif
#ifdef XFT_SUPPORT
	r->XftColors = (XftColor*) rxvt_malloc (
		sizeof (XftColor) * (TOTAL_COLORS));
#endif
	if(
		 NULL == r->h || NULL == r->PixColors
#ifdef OFF_FOCUS_FADING
		 || NULL == r->PixColorsUnfocus
#endif
#ifdef XFT_SUPPORT
		 || NULL == r->XftColors
#endif
	  )
		return -1;


	r->Xdisplay = NULL;
#ifdef USE_XIM
	r->TermWin.fontset = NULL;
#endif
	r->TermWin.font = NULL;
#ifdef MULTICHAR_SET
	r->TermWin.mfont = NULL;
#endif
#ifndef NO_BOLDFONT
	r->TermWin.bfont = NULL;
#endif

#ifdef XFT_SUPPORT
	r->TermWin.xftpattern	= NULL;
	r->TermWin.xftfont		= NULL;
	r->TermWin.xftpfont		= NULL;
	r->TermWin.xftPfont		= NULL;
# ifndef NO_BOLDFONT
	r->TermWin.xftbpattern	= NULL;
	r->TermWin.xftbfont		= NULL;
	r->TermWin.bf_switched	= 0;
# endif	/* NO_BOLDFONT */
# ifdef MULTICHAR_SET
#  ifdef HAVE_ICONV_H
	r->TermWin.xfticonv = (iconv_t) -1;
#  endif
	r->TermWin.xftmpattern = NULL;
	r->TermWin.xftmfont = NULL;
# endif	/* MULTICHAR_SET */
#endif	/* XFT_SUPPORT */

#ifdef OFF_FOCUS_FADING
	r->color_switched = 0;	/* color is not switched */
#endif
	h->xa[XA_COMPOUND_TEXT] =
	h->xa[XA_MULTIPLE] =
	h->xa[XA_TARGETS] =
	h->xa[XA_TEXT] =
	h->xa[XA_TIMESTAMP] =
	h->xa[XA_VT_SELECTION] =
	h->xa[XA_INCR] = None;
	h->locale = NULL;

# ifdef HAVE_MENUBAR
	r->h->BuildMenu = r->h->ActiveMenu = NULL;
	r->h->popupMenu[0] = r->h->popupMenu[1] = r->h->popupMenu[2] = NULL;
	r->h->showingMenu = 0;

	/* Set the current menubar to empty defaults */
	h->MenuBar.head = h->MenuBar.tail = NULL;
	h->MenuBar.title = NULL;
# endif

# ifdef USE_XIM
	h->Input_Context = NULL;
# endif
	/* h->v_bufstr = NULL; */
	h->buffer = NULL;
#ifdef TRANSPARENT
	h->am_pixmap_trans = 0;
	h->am_transparent  = 0;
	h->rootPixmap	   = None;
	h->bgRefreshInterval = DEFAULT_BG_REFRESH_INTERVAL;
	h->lastCNotify.tv_sec = 0;		/* No BG update pending */
#endif

	/* Initialize timeouts to 0 */
	for( i=NUM_TIMEOUTS; i--;)
	    h->timeout[i].tv_sec = 0;

	/* Back to undocumented code :) */
	h->MEvent.time = CurrentTime;
	h->MEvent.button = AnyButton;
	r->Options = DEFAULT_OPTIONS;
	r->Options2 = DEFAULT_OPTIONS2;
	h->want_refresh = 1;
	h->want_clip_refresh = 0;
	/*
	 * We only want to set want_resize when we call XResizeWindow. In that
	 * case if XResizeWindow fails, we know that we called it, and can run
	 * our internal resize routines anyway (e.g. put the tabbar in place)
	 */
	h->want_resize = 0;
	h->ttygid = -1;
	r->Xfd = -1;
	r->vt_died = 0;

	/* default values */
#ifdef NO_FRILLS
	r->TermWin.int_bwidth = DEFAULT_INTERNALBORDERWIDTH;
	r->TermWin.ext_bwidth = DEFAULT_EXTERNALBORDERWIDTH;
#else
	r->TermWin.int_bwidth = (INTERNALBORDERWIDTH >= 0 && INTERNALBORDERWIDTH <= MAX_INTERNALBORDERWIDTH) ? INTERNALBORDERWIDTH : DEFAULT_INTERNALBORDERWIDTH;
	r->TermWin.ext_bwidth = (EXTERNALBORDERWIDTH >= 0 && EXTERNALBORDERWIDTH <= MAX_EXTERNALBORDERWIDTH) ? EXTERNALBORDERWIDTH : DEFAULT_EXTERNALBORDERWIDTH;
#endif

#ifndef NO_LINESPACE
	r->TermWin.lineSpace = (LINESPACE >= 0 && LINESPACE <= MAX_LINESPACE) ? LINESPACE : DEFAULT_LINESPACE;
#endif

#ifdef CURSOR_BLINK
	r->h->blinkInterval = DEFAULT_BLINK_TIME;
#endif
#ifdef POINTER_BLANK
	r->h->pointerBlankDelay = DEFAULT_BLANKDELAY;
#endif

	r->numPixColors = TOTAL_COLORS;

	/* Initialize selection data */
#ifndef NO_NEW_SELECTION
	r->selection_style = NEW_SELECT;
#else
	r->selection_style = OLD_SELECT;
#endif
	r->selection.vt = -1;
	r->selection.op = SELECTION_CLEAR;
	r->selection.screen = PRIMARY;
	r->selection.clicks = 0;
	r->selection.text = NULL;
	r->selection.len = 0;
	r->selection.beg.row = 0;
	r->selection.beg.col = 0;
	r->selection.end.row = 0;
	r->selection.end.col = 0;

#ifndef NO_BRIGHTCOLOR
	h->colorfgbg = DEFAULT_RSTYLE;
#endif
#ifdef GREEK_SUPPORT
	h->ks_greekmodeswith = GREEK_KEYBOARD_MODESWITCH;
#endif
	h->refresh_limit = 1;
	h->refresh_type = SLOW_REFRESH;
	h->refreshRegion = None;			/* Will be created when needed */
	h->prev_nrow = h->prev_ncol = 0;

	r->encoding_method = ENC_NOENC;
	h->multichar_decode = rxvt_decode_dummy;

	h->oldcursor.row = h->oldcursor.col = -1;
	h->last_bot = h->last_state = -1;

#ifdef HAVE_X11_SM_SMLIB_H
	r->TermWin.sm_conn = NULL;
	r->TermWin.ice_conn = NULL;
	r->TermWin.ice_fd = -1;
	r->TermWin.sm_client_id = NULL;
#endif

	r->tabClicked = -1; /* No tab has been clicked by user */

	h->allowedxerror = 0;
	h->xerror_return = Success;
	return 0;
}


/* EXTPROTO */
void
rxvt_init_secondary(rxvt_t *r)
{
	int			i, num_fds;
#ifdef TTY_GID_SUPPORT
	struct group   *gr = getgrnam("tty");

	if (gr)			/* change group ownership of tty to "tty" */
	{
		r->h->ttygid = gr->gr_gid;
	}
	else
#endif				/* TTY_GID_SUPPORT */
	{
		r->h->ttygid = getgid();
	}

	rxvt_set_default_locale (r);

	/* get number of available file descriptors */
#if defined(_POSIX_VERSION) || ! defined(OS_SVR4)
	num_fds = (int)sysconf(_SC_OPEN_MAX);
#else
	num_fds = rxvt_getdtablesize();
#endif

	/*
	** Close all unused file descriptors
	** We don't want them, we don't need them.
	*/
	if ((i = open("/dev/null", O_RDONLY)) < 0)
	{
		/* TODO: BOO HISS */
		dup2(STDERR_FILENO, STDIN_FILENO);
	}
	else if (i > STDIN_FILENO)
	{
		dup2(i, STDIN_FILENO);
		close(i);
	}
	dup2(STDERR_FILENO, STDOUT_FILENO);
	for (i = STDERR_FILENO + 1; i < num_fds; i++)
	{
	/* #ifdef __sgi */
#ifdef OS_IRIX
		/* Alex Coventry says we need 4 & 7 too */
		if (i == 4 || i == 7)
			continue;
#endif
		close(i);
	}

	/* Now set the correct num_fds */
	r->num_fds = STDERR_FILENO + 1;
#ifdef OS_IRIX
	r->num_fds = 7 + 1;
#endif
}


/* INTPROTO */
int
rxvt_xerror_handler(const Display *display __attribute__((unused)), const XErrorEvent *event)
{
	rxvt_t*		r = rxvt_get_r();
	char	error_msg[1024];

	XGetErrorText (r->Xdisplay, event->error_code, error_msg, 1023);
	r->h->xerror_return = event->error_code;

	if ( ! r->h->allowedxerror)
		rxvt_print_error("%s", error_msg);

	return 0;		/* ignored anyway */
}


#ifdef TEXT_SHADOW
/* INTPROTO */
void
rxvt_init_shadow_mode (rxvt_t* r, const char* shadow_mode)
{
	if (
		  !shadow_mode || !STRCASECMP ("botright", shadow_mode)
		  || !STRCASECMP ("default", shadow_mode))
	{
		r->TermWin.shadow_mode = SHADOW_BOTRIGHT;
	}
	else if (!STRCASECMP ("botleft", shadow_mode))
	{
		r->TermWin.shadow_mode = SHADOW_BOTLEFT;
	}
	else if (!STRCASECMP ("topright", shadow_mode))
	{
		r->TermWin.shadow_mode = SHADOW_TOPRIGHT;
	}
	else if (!STRCASECMP ("topleft", shadow_mode))
	{
		r->TermWin.shadow_mode = SHADOW_TOPLEFT;
	}
	else if (!STRCASECMP ("top", shadow_mode))
	{
		r->TermWin.shadow_mode = SHADOW_TOP;
	}
	else if (!STRCASECMP ("bottom", shadow_mode))
	{
		r->TermWin.shadow_mode = SHADOW_BOTTOM;
	}
	else if (!STRCASECMP ("left", shadow_mode))
	{
		r->TermWin.shadow_mode = SHADOW_LEFT;
	}
	else if (!STRCASECMP ("right", shadow_mode))
	{
		r->TermWin.shadow_mode = SHADOW_RIGHT;
	}
	else if (!STRCASECMP ("none", shadow_mode))
	{
		r->TermWin.shadow_mode = SHADOW_NONE;
	}
	else		/* no match == default */
	{
		r->TermWin.shadow_mode = SHADOW_NONE;
	}
}
#endif


/*----------------------------------------------------------------------*/
/* EXTPROTO */
const char**
rxvt_init_resources(rxvt_t* r, int argc, const char *const *argv)
{
	register int	i, r_argc;
	const char**	cmd_argv;
	const char**	r_argv;
	const char**	rs;


	/*
	 * Look for -exec option.  Find => split and make cmd_argv[] of command args
	 */
	for( r_argc = 0; r_argc < argc; r_argc++ )
		if( !STRCMP(argv[r_argc], "-e") || !STRCMP(argv[r_argc], "-exec") )
			break;

	r_argv = (const char**) rxvt_malloc( sizeof(char*) * (r_argc + 1) );

	for( i = 0; i < r_argc; i++ )
		r_argv[i] = (const char*) argv[i];
	r_argv[i] = NULL;

	if (r_argc == argc)
		cmd_argv = NULL;
	else
	{
		cmd_argv = (const char **)rxvt_malloc(sizeof(char*) * (argc - r_argc));

		for (i = 0; i < argc - r_argc - 1; i++)
			cmd_argv[i] = (const char *)argv[i + r_argc + 1];
		cmd_argv[i] = NULL;
	}

	/* clear all resources */
	rs = r->h->rs;
	for (i = 0; i < NUM_RESOURCES;)
		rs[i++] = NULL;

	rs[Rs_name] = rxvt_r_basename( argv[0] );

	/*
	 * Open display, get options/resources and create the window
	 */
	if( ( rs[Rs_display_name] = getenv("DISPLAY") ) == NULL)
		rs[Rs_display_name] = ":0";

	rxvt_get_options( r, r_argc, r_argv );
	free( r_argv ); /* XXX memory leak? */

#ifdef LOCAL_X_IS_UNIX
	if( rs[Rs_display_name][0] == ':' )
	{
		int		l = 5 + STRLEN(rs[Rs_display_name]);
		if (l <= 0 || l > 1024) /* possible integer overflow */
			l = 1024;
		val = rxvt_malloc(l);
		STRCPY(val, "unix");
		STRNCAT(val, rs[Rs_display_name], l-5);
		val[l-1] = (char) 0;
		DBG_MSG(1, (stderr, "Open X display %s\n", val));
		r->Xdisplay = XOpenDisplay(val);
		free(val);
	}
#endif

	if( r->Xdisplay == NULL )
	{
		DBG_MSG( 1, ( stderr, "Open X display %s\n",
					rs[Rs_display_name] ? rs[Rs_display_name] : "nil"));
		r->Xdisplay = XOpenDisplay( rs[Rs_display_name] );
		if( NULL == r->Xdisplay )
		{
			rxvt_print_error( "can't open display %s", rs[Rs_display_name] );
			exit( EXIT_FAILURE );
		}
	}


#ifdef DEBUG_X
	XSynchronize( r->Xdisplay, True );
	XSetErrorHandler( (XErrorHandler) abort );
	/* XSetErrorHandler((XErrorHandler) rxvt_xerror_handler); */
#else
	XSetErrorHandler( (XErrorHandler) rxvt_xerror_handler );
#endif

	/* Initialize all atoms after establishing connection to X */
	for (i = 0; i < NUM_XA; i++)
		r->h->xa[i] = XInternAtom( r->Xdisplay, xa_names[i], False );

	rxvt_extract_resources( r, r->Xdisplay, rs[Rs_name] );

	/*
	 * set any defaults not already set
	 */
	if( cmd_argv && cmd_argv[0] )
	{
		if( !rs[Rs_title] )
			rs[Rs_title] = rxvt_r_basename( cmd_argv[0] );
		if( !rs[Rs_iconName] )
			rs[Rs_iconName] = rs[Rs_title];
	}
	else
	{
		if( !rs[Rs_title] )
			rs[Rs_title] = rs[Rs_name];
		if( !rs[Rs_iconName] )
			rs[Rs_iconName] = rs[Rs_name];
	}


	if( rs[Rs_maxTabWidth] )
	{
		register int	tmp = atoi( rs[ Rs_maxTabWidth]);
		r->TermWin.maxTabWidth = ( tmp >=1 && tmp <= MAX_DISPLAY_TAB_TXT ) ?
										tmp : MAX_DISPLAY_TAB_TXT;
	}
	else
		/*
		 * If we're using Xft, then we will probably also use a PFont. So we
		 * should set this to the maximum possible.
		 */
		r->TermWin.maxTabWidth =
#ifdef XFT_SUPPORT
			(r->Options & Opt_xft) ? MAX_DISPLAY_TAB_TXT :