427 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			C
		
	
	
	
			
		
		
	
	
			427 lines
		
	
	
		
			12 KiB
		
	
	
	
		
			C
		
	
	
	
/************************************************************
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Copyright (c) 1993 by Silicon Graphics Computer Systems, Inc.
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Permission to use, copy, modify, and distribute this
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software and its documentation for any purpose and without
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fee is hereby granted, provided that the above copyright
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notice appear in all copies and that both that copyright
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notice and this permission notice appear in supporting
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documentation, and that the name of Silicon Graphics not be 
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used in advertising or publicity pertaining to distribution 
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of the software without specific prior written permission.
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Silicon Graphics makes no representation about the suitability 
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of this software for any purpose. It is provided "as is"
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without any express or implied warranty.
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SILICON GRAPHICS DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS 
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SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY 
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AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL SILICON
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GRAPHICS BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL 
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DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, 
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DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE 
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OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION  WITH
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THE USE OR PERFORMANCE OF THIS SOFTWARE.
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********************************************************/
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#ifdef HAVE_DIX_CONFIG_H
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#include <dix-config.h>
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#endif
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#include <xkb-config.h>
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#include <stdio.h>
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#include <ctype.h>
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#include <X11/X.h>
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#include <X11/Xos.h>
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#include <X11/Xproto.h>
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#include <X11/keysym.h>
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#include <X11/extensions/XKM.h>
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#include "inputstr.h"
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#include "scrnintstr.h"
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#include "windowstr.h"
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#define	XKBSRV_NEED_FILE_FUNCS
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#include <xkbsrv.h>
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#include <X11/extensions/XI.h>
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#include "xkb.h"
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        /*
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         * If XKM_OUTPUT_DIR specifies a path without a leading slash, it is
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         * relative to the top-level XKB configuration directory.
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         * Making the server write to a subdirectory of that directory
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         * requires some work in the general case (install procedure
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         * has to create links to /var or somesuch on many machines),
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         * so we just compile into /usr/tmp for now.
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         */
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#ifndef XKM_OUTPUT_DIR
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#define	XKM_OUTPUT_DIR	"compiled/"
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#endif
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#define	PRE_ERROR_MSG "\"The XKEYBOARD keymap compiler (xkbcomp) reports:\""
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#define	ERROR_PREFIX	"\"> \""
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#define	POST_ERROR_MSG1 "\"Errors from xkbcomp are not fatal to the X server\""
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#define	POST_ERROR_MSG2 "\"End of messages from xkbcomp\""
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#if defined(WIN32)
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#define PATHSEPARATOR "\\"
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#else
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#define PATHSEPARATOR "/"
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#endif
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static void
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OutputDirectory(char *outdir, size_t size)
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{
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#ifndef WIN32
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    /* Can we write an xkm and then open it too? */
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    if (access(XKM_OUTPUT_DIR, W_OK | X_OK) == 0 &&
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        (strlen(XKM_OUTPUT_DIR) < size)) {
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        (void) strcpy(outdir, XKM_OUTPUT_DIR);
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    }
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    else
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#else
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    if (strlen(Win32TempDir()) + 1 < size) {
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        (void) strcpy(outdir, Win32TempDir());
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        (void) strcat(outdir, "\\");
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    }
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    else
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#endif
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    if (strlen("/tmp/") < size) {
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        (void) strcpy(outdir, "/tmp/");
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    }
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}
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static Bool
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XkbDDXCompileKeymapByNames(XkbDescPtr xkb,
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                           XkbComponentNamesPtr names,
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                           unsigned want,
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                           unsigned need, char *nameRtrn, int nameRtrnLen)
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{
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    FILE *out;
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    char *buf = NULL, keymap[PATH_MAX], xkm_output_dir[PATH_MAX];
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    const char *emptystring = "";
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    char *xkbbasedirflag = NULL;
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    const char *xkbbindir = emptystring;
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    const char *xkbbindirsep = emptystring;
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#ifdef WIN32
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    /* WIN32 has no popen. The input must be stored in a file which is
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       used as input for xkbcomp. xkbcomp does not read from stdin. */
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    char tmpname[PATH_MAX];
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    const char *xkmfile = tmpname;
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#else
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    const char *xkmfile = "-";
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#endif
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    snprintf(keymap, sizeof(keymap), "server-%s", display);
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    OutputDirectory(xkm_output_dir, sizeof(xkm_output_dir));
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#ifdef WIN32
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    strcpy(tmpname, Win32TempDir());
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    strcat(tmpname, "\\xkb_XXXXXX");
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    (void) mktemp(tmpname);
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#endif
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    if (XkbBaseDirectory != NULL) {
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        if (asprintf(&xkbbasedirflag, "\"-R%s\"", XkbBaseDirectory) == -1)
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            xkbbasedirflag = NULL;
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    }
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    if (XkbBinDirectory != NULL) {
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        int ld = strlen(XkbBinDirectory);
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        int lps = strlen(PATHSEPARATOR);
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        xkbbindir = XkbBinDirectory;
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        if ((ld >= lps) && (strcmp(xkbbindir + ld - lps, PATHSEPARATOR) != 0)) {
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            xkbbindirsep = PATHSEPARATOR;
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        }
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    }
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    if (asprintf(&buf,
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                 "\"%s%sxkbcomp\" -w %d %s -xkm \"%s\" "
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                 "-em1 %s -emp %s -eml %s \"%s%s.xkm\"",
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                 xkbbindir, xkbbindirsep,
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                 ((xkbDebugFlags < 2) ? 1 :
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                  ((xkbDebugFlags > 10) ? 10 : (int) xkbDebugFlags)),
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                 xkbbasedirflag ? xkbbasedirflag : "", xkmfile,
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                 PRE_ERROR_MSG, ERROR_PREFIX, POST_ERROR_MSG1,
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                 xkm_output_dir, keymap) == -1)
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        buf = NULL;
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    free(xkbbasedirflag);
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    if (!buf) {
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        LogMessage(X_ERROR,
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                   "XKB: Could not invoke xkbcomp: not enough memory\n");
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        return FALSE;
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    }
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#ifndef WIN32
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    out = Popen(buf, "w");
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#else
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    out = fopen(tmpname, "w");
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#endif
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    if (out != NULL) {
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#ifdef DEBUG
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        if (xkbDebugFlags) {
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            ErrorF("[xkb] XkbDDXCompileKeymapByNames compiling keymap:\n");
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            XkbWriteXKBKeymapForNames(stderr, names, xkb, want, need);
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        }
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#endif
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        XkbWriteXKBKeymapForNames(out, names, xkb, want, need);
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#ifndef WIN32
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        if (Pclose(out) == 0)
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#else
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        if (fclose(out) == 0 && System(buf) >= 0)
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#endif
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        {
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            if (xkbDebugFlags)
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                DebugF("[xkb] xkb executes: %s\n", buf);
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            if (nameRtrn) {
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                strlcpy(nameRtrn, keymap, nameRtrnLen);
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            }
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            free(buf);
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#ifdef WIN32
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            unlink(tmpname);
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#endif
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            return TRUE;
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        }
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        else
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            LogMessage(X_ERROR, "Error compiling keymap (%s)\n", keymap);
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#ifdef WIN32
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        /* remove the temporary file */
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        unlink(tmpname);
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#endif
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    }
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    else {
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#ifndef WIN32
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        LogMessage(X_ERROR, "XKB: Could not invoke xkbcomp\n");
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#else
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        LogMessage(X_ERROR, "Could not open file %s\n", tmpname);
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#endif
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    }
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    if (nameRtrn)
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        nameRtrn[0] = '\0';
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    free(buf);
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    return FALSE;
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}
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static FILE *
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XkbDDXOpenConfigFile(char *mapName, char *fileNameRtrn, int fileNameRtrnLen)
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{
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    char buf[PATH_MAX], xkm_output_dir[PATH_MAX];
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    FILE *file;
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    buf[0] = '\0';
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    if (mapName != NULL) {
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        OutputDirectory(xkm_output_dir, sizeof(xkm_output_dir));
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        if ((XkbBaseDirectory != NULL) && (xkm_output_dir[0] != '/')
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#ifdef WIN32
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            && (!isalpha(xkm_output_dir[0]) || xkm_output_dir[1] != ':')
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#endif
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            ) {
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            if (snprintf(buf, PATH_MAX, "%s/%s%s.xkm", XkbBaseDirectory,
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                         xkm_output_dir, mapName) >= PATH_MAX)
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                buf[0] = '\0';
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        }
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        else {
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            if (snprintf(buf, PATH_MAX, "%s%s.xkm", xkm_output_dir, mapName)
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                >= PATH_MAX)
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                buf[0] = '\0';
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        }
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        if (buf[0] != '\0')
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            file = fopen(buf, "rb");
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        else
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            file = NULL;
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    }
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    else
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        file = NULL;
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    if ((fileNameRtrn != NULL) && (fileNameRtrnLen > 0)) {
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        strlcpy(fileNameRtrn, buf, fileNameRtrnLen);
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    }
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    return file;
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}
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unsigned
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XkbDDXLoadKeymapByNames(DeviceIntPtr keybd,
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                        XkbComponentNamesPtr names,
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                        unsigned want,
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                        unsigned need,
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                        XkbDescPtr *xkbRtrn, char *nameRtrn, int nameRtrnLen)
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{
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    XkbDescPtr xkb;
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    FILE *file;
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    char fileName[PATH_MAX];
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    unsigned missing;
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    *xkbRtrn = NULL;
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    if ((keybd == NULL) || (keybd->key == NULL) ||
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        (keybd->key->xkbInfo == NULL))
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        xkb = NULL;
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    else
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        xkb = keybd->key->xkbInfo->desc;
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    if ((names->keycodes == NULL) && (names->types == NULL) &&
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        (names->compat == NULL) && (names->symbols == NULL) &&
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        (names->geometry == NULL)) {
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        LogMessage(X_ERROR, "XKB: No components provided for device %s\n",
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                   keybd->name ? keybd->name : "(unnamed keyboard)");
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        return 0;
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    }
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    else if (!XkbDDXCompileKeymapByNames(xkb, names, want, need,
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                                         nameRtrn, nameRtrnLen)) {
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        LogMessage(X_ERROR, "XKB: Couldn't compile keymap\n");
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        return 0;
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    }
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    file = XkbDDXOpenConfigFile(nameRtrn, fileName, PATH_MAX);
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    if (file == NULL) {
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        LogMessage(X_ERROR, "Couldn't open compiled keymap file %s\n",
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                   fileName);
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        return 0;
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    }
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    missing = XkmReadFile(file, need, want, xkbRtrn);
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    if (*xkbRtrn == NULL) {
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        LogMessage(X_ERROR, "Error loading keymap %s\n", fileName);
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        fclose(file);
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        (void) unlink(fileName);
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        return 0;
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    }
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    else {
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        DebugF("Loaded XKB keymap %s, defined=0x%x\n", fileName,
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               (*xkbRtrn)->defined);
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    }
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    fclose(file);
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    (void) unlink(fileName);
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    return (need | want) & (~missing);
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}
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Bool
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XkbDDXNamesFromRules(DeviceIntPtr keybd,
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                     char *rules_name,
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                     XkbRF_VarDefsPtr defs, XkbComponentNamesPtr names)
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{
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    char buf[PATH_MAX];
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    FILE *file;
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    Bool complete;
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    XkbRF_RulesPtr rules;
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    if (!rules_name)
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        return FALSE;
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    if (snprintf(buf, PATH_MAX, "%s/rules/%s", XkbBaseDirectory, rules_name)
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        >= PATH_MAX) {
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        LogMessage(X_ERROR, "XKB: Rules name is too long\n");
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        return FALSE;
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    }
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    file = fopen(buf, "r");
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    if (!file) {
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        LogMessage(X_ERROR, "XKB: Couldn't open rules file %s\n", buf);
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        return FALSE;
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    }
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    rules = XkbRF_Create();
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    if (!rules) {
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        LogMessage(X_ERROR, "XKB: Couldn't create rules struct\n");
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        fclose(file);
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        return FALSE;
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    }
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    if (!XkbRF_LoadRules(file, rules)) {
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        LogMessage(X_ERROR, "XKB: Couldn't parse rules file %s\n", rules_name);
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        fclose(file);
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        XkbRF_Free(rules, TRUE);
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        return FALSE;
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    }
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    memset(names, 0, sizeof(*names));
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    complete = XkbRF_GetComponents(rules, defs, names);
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    fclose(file);
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    XkbRF_Free(rules, TRUE);
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    if (!complete)
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        LogMessage(X_ERROR, "XKB: Rules returned no components\n");
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    return complete;
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}
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static Bool
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XkbRMLVOtoKcCGST(DeviceIntPtr dev, XkbRMLVOSet * rmlvo,
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                 XkbComponentNamesPtr kccgst)
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{
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    XkbRF_VarDefsRec mlvo;
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    mlvo.model = rmlvo->model;
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    mlvo.layout = rmlvo->layout;
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    mlvo.variant = rmlvo->variant;
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    mlvo.options = rmlvo->options;
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    return XkbDDXNamesFromRules(dev, rmlvo->rules, &mlvo, kccgst);
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}
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/**
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 * Compile the given RMLVO keymap and return it. Returns the XkbDescPtr on
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 * success or NULL on failure. If the components compiled are not a superset
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 * or equal to need, the compiliation is treated as failure.
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 */
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static XkbDescPtr
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XkbCompileKeymapForDevice(DeviceIntPtr dev, XkbRMLVOSet * rmlvo, int need)
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{
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    XkbDescPtr xkb = NULL;
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    unsigned int provided;
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    XkbComponentNamesRec kccgst = { 0 };
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    char name[PATH_MAX];
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    if (XkbRMLVOtoKcCGST(dev, rmlvo, &kccgst)) {
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        provided =
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            XkbDDXLoadKeymapByNames(dev, &kccgst, XkmAllIndicesMask, need, &xkb,
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                                    name, PATH_MAX);
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        if ((need & provided) != need) {
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            if (xkb) {
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                XkbFreeKeyboard(xkb, 0, TRUE);
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                xkb = NULL;
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            }
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        }
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    }
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    XkbFreeComponentNames(&kccgst, FALSE);
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    return xkb;
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}
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XkbDescPtr
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XkbCompileKeymap(DeviceIntPtr dev, XkbRMLVOSet * rmlvo)
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{
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    XkbDescPtr xkb;
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    unsigned int need;
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    if (!dev || !rmlvo) {
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        LogMessage(X_ERROR, "XKB: No device or RMLVO specified\n");
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        return NULL;
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    }
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    /* These are the components we really really need */
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    need = XkmSymbolsMask | XkmCompatMapMask | XkmTypesMask |
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        XkmKeyNamesMask | XkmVirtualModsMask;
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    xkb = XkbCompileKeymapForDevice(dev, rmlvo, need);
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    if (!xkb) {
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        XkbRMLVOSet dflts;
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        /* we didn't get what we really needed. And that will likely leave
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         * us with a keyboard that doesn't work. Use the defaults instead */
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        LogMessage(X_ERROR, "XKB: Failed to load keymap. Loading default "
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                   "keymap instead.\n");
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        XkbGetRulesDflts(&dflts);
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        xkb = XkbCompileKeymapForDevice(dev, &dflts, 0);
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        XkbFreeRMLVOSet(&dflts, FALSE);
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    }
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    return xkb;
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}
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