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+/* $Xorg: XKBCvt.c,v 1.5 2001/02/09 02:03:38 xorgcvs Exp $ */
+/*
+
+Copyright 1988, 1989, 1998 The Open Group
+
+Permission to use, copy, modify, distribute, and sell this software and its
+documentation for any purpose is hereby granted without fee, provided that
+the above copyright notice appear in all copies and that both that
+copyright notice and this permission notice appear in supporting
+documentation.
+
+The above copyright notice and this permission notice shall be included
+in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE OPEN GROUP BE LIABLE FOR ANY CLAIM, DAMAGES OR
+OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+OTHER DEALINGS IN THE SOFTWARE.
+
+Except as contained in this notice, the name of The Open Group shall
+not be used in advertising or otherwise to promote the sale, use or
+other dealings in this Software without prior written authorization
+from The Open Group.
+
+*/
+/* $XFree86: xc/lib/X11/XKBCvt.c,v 3.34 2002/10/08 23:31:35 dawes Exp $ */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <X11/X.h>
+#include <X11/Xlib.h>
+#define NEED_EVENTS
+#include "Xlibint.h"
+#include "Xlcint.h"
+#include "XlcPubI.h"
+#include "Ximint.h"
+#include <X11/Xutil.h>
+#include <X11/Xmd.h>
+#define XK_LATIN1
+#define XK_PUBLISHING
+#include <X11/keysym.h>
+#include <X11/extensions/XKBproto.h>
+#include "XKBlibint.h"
+#include <X11/Xlocale.h>
+#include <ctype.h>
+#include <X11/Xos.h>
+
+#ifdef __sgi_not_xconsortium
+#define XKB_EXTEND_LOOKUP_STRING
+#endif
+
+static int
+_XkbHandleSpecialSym(KeySym keysym, char *buffer, int nbytes, int *extra_rtrn)
+{
+
+ /* try to convert to Latin-1, handling ctrl */
+ if (!(((keysym >= XK_BackSpace) && (keysym <= XK_Clear)) ||
+ (keysym == XK_Return) || (keysym == XK_Escape) ||
+ (keysym == XK_KP_Space) || (keysym == XK_KP_Tab) ||
+ (keysym == XK_KP_Enter) ||
+ ((keysym >= XK_KP_Multiply) && (keysym <= XK_KP_9)) ||
+ (keysym == XK_KP_Equal) ||
+ (keysym == XK_Delete)))
+ return 0;
+
+ if (nbytes<1) {
+ if (extra_rtrn)
+ *extra_rtrn= 1;
+ return 0;
+ }
+ /* if X keysym, convert to ascii by grabbing low 7 bits */
+ if (keysym == XK_KP_Space)
+ buffer[0] = XK_space & 0x7F; /* patch encoding botch */
+ else if (keysym == XK_hyphen)
+ buffer[0] = (char)(XK_minus & 0xFF); /* map to equiv character */
+ else buffer[0] = (char)(keysym & 0x7F);
+ return 1;
+}
+
+/*ARGSUSED*/
+static int
+_XkbKSToKnownSet ( XPointer priv,
+ KeySym keysym,
+ char * buffer,
+ int nbytes,
+ int * extra_rtrn)
+{
+ char tbuf[8],*buf;
+
+ if (extra_rtrn)
+ *extra_rtrn= 0;
+
+ /* convert "dead" diacriticals for dumb applications */
+ if ( (keysym&0xffffff00)== 0xfe00 ) {
+ switch ( keysym ) {
+ case XK_dead_grave: keysym = XK_grave; break;
+ case XK_dead_acute: keysym = XK_acute; break;
+ case XK_dead_circumflex: keysym = XK_asciicircum; break;
+ case XK_dead_tilde: keysym = XK_asciitilde; break;
+ case XK_dead_macron: keysym = XK_macron; break;
+ case XK_dead_breve: keysym = XK_breve; break;
+ case XK_dead_abovedot: keysym = XK_abovedot; break;
+ case XK_dead_diaeresis: keysym = XK_diaeresis; break;
+ case XK_dead_abovering: keysym = XK_degree; break;
+ case XK_dead_doubleacute: keysym = XK_doubleacute; break;
+ case XK_dead_caron: keysym = XK_caron; break;
+ case XK_dead_cedilla: keysym = XK_cedilla; break;
+ case XK_dead_ogonek : keysym = XK_ogonek; break;
+ case XK_dead_iota: keysym = XK_Greek_iota; break;
+#ifdef XK_KATAKANA
+ case XK_dead_voiced_sound: keysym = XK_voicedsound; break;
+ case XK_dead_semivoiced_sound:keysym = XK_semivoicedsound; break;
+#endif
+ }
+ }
+
+ if (nbytes<1) buf= tbuf;
+ else buf= buffer;
+
+ if ((keysym&0xffffff00)==0xff00) {
+ return _XkbHandleSpecialSym(keysym, buf, nbytes, extra_rtrn);
+ }
+ return _XimGetCharCode (priv, keysym, (unsigned char *)buf, nbytes);
+}
+
+typedef struct _XkbToKS {
+ unsigned prefix;
+ char *map;
+} XkbToKS;
+
+/*ARGSUSED*/
+static KeySym
+_XkbKnownSetToKS(XPointer priv,char *buffer,int nbytes,Status *status)
+{
+ if (nbytes!=1)
+ return NoSymbol;
+ if (((buffer[0]&0x80)==0)&&(buffer[0]>=32))
+ return buffer[0];
+ else if ((buffer[0]&0x7f)>=32) {
+ XkbToKS *map= (XkbToKS *)priv;
+ if ( map ) {
+ if ( map->map ) return map->prefix|map->map[buffer[0]&0x7f];
+ else return map->prefix|buffer[0];
+ }
+ return buffer[0];
+ }
+ return NoSymbol;
+}
+
+static KeySym
+__XkbDefaultToUpper(KeySym sym)
+{
+ KeySym lower,upper;
+
+ XConvertCase(sym, &lower, &upper);
+ return upper;
+}
+
+#ifdef XKB_EXTEND_LOOKUP_STRING
+static int
+Strcmp(char *str1, char *str2)
+{
+ char str[256];
+ char c, *s;
+
+ /*
+ * unchecked strings from the environment can end up here, so check
+ * the length before copying.
+ */
+ if (strlen(str1) >= sizeof(str)) /* almost certain it's a mismatch */
+ return 1;
+
+ for (s = str; (c = *str1++); ) {
+ if (isupper(c))
+ c = tolower(c);
+ *s++ = c;
+ }
+ *s = '\0';
+ return (strcmp(str, str2));
+}
+#endif
+
+int
+_XkbGetConverters(char *encoding_name, XkbConverters *cvt_rtrn)
+{
+ if ( !cvt_rtrn ) return 0;
+
+ cvt_rtrn->KSToMB = _XkbKSToKnownSet;
+ cvt_rtrn->KSToMBPriv = _XimGetLocaleCode(encoding_name);
+ cvt_rtrn->MBToKS = _XkbKnownSetToKS;
+ cvt_rtrn->MBToKSPriv = NULL;
+ cvt_rtrn->KSToUpper = __XkbDefaultToUpper;
+ return 1;
+}
+
+/***====================================================================***/
+
+/*
+ * The function _XkbGetCharset seems to be missnamed as what it seems to
+ * be used for is to determine the encoding-name for the locale. ???
+ */
+
+#ifdef XKB_EXTEND_LOOKUP_STRING
+
+/*
+ * XKB_EXTEND_LOOKUP_STRING is not used by the SI. It is used by various
+ * X Consortium/X Project Team members, so we leave it in the source as
+ * an simplify integration by these companies.
+ */
+
+#define CHARSET_FILE "/usr/lib/X11/input/charsets"
+static char *_XkbKnownLanguages = "c=ascii:da,de,en,es,fr,is,it,nl,no,pt,sv=iso8859-1:hu,pl,cs=iso8859-2:eo=iso8859-3:sp=iso8859-5:ar,ara=iso8859-6:el=iso8859-7:he=iso8859-8:tr=iso8859-9:lt,lv=iso8859-13:et,fi=iso8859-15:ru=koi8-r:uk=koi8-u:th,th_TH,th_TH.iso8859-11=iso8859-11:th_TH.TIS620=tis620:hy=armscii-8:vi=tcvn-5712:ka=georgian-academy:be,bg=microsoft-cp1251";
+
+char *
+_XkbGetCharset()
+{
+ /*
+ * PAGE USAGE TUNING: explicitly initialize to move these to data
+ * instead of bss
+ */
+ static char buf[100] = { 0 };
+ char lang[256];
+ char *start,*tmp,*end,*next,*set;
+ char *country,*charset;
+ char *locale;
+
+ tmp = getenv( "_XKB_CHARSET" );
+ if ( tmp )
+ return tmp;
+ locale = setlocale(LC_CTYPE,NULL);
+
+ if ( locale == NULL )
+ return NULL;
+
+ if (strlen(locale) >= sizeof(lang))
+ return NULL;
+
+ for (tmp = lang; *tmp = *locale++; tmp++) {
+ if (isupper(*tmp))
+ *tmp = tolower(*tmp);
+ }
+ country = strchr( lang, '_');
+ if ( country ) {
+ *country++ = '\0';
+ charset = strchr( country, '.' );
+ if ( charset ) *charset++ = '\0';
+ if ( charset ) {
+ strncpy(buf,charset,99);
+ buf[99] = '\0';
+ return buf;
+ }
+ }
+ else {
+ charset = NULL;
+ }
+
+ if ((tmp = getenv("_XKB_LOCALE_CHARSETS"))!=NULL) {
+ start = _XkbAlloc(strlen(tmp) + 1);
+ strcpy(start, tmp);
+ tmp = start;
+ } else {
+ struct stat sbuf;
+ FILE *file;
+#ifndef __UNIXOS2__
+ char *cf = CHARSET_FILE;
+#else
+ char *cf = __XOS2RedirRoot(CHARSET_FILE);
+#endif
+
+#ifndef S_ISREG
+# define S_ISREG(mode) (((mode) & S_IFMT) == S_IFREG)
+#endif
+
+ if ( (stat(cf,&sbuf)==0) && S_ISREG(sbuf.st_mode) &&
+ (file = fopen(cf,"r")) ) {
+ tmp = _XkbAlloc(sbuf.st_size+1);
+ if (tmp!=NULL) {
+ sbuf.st_size = (long)fread(tmp,1,sbuf.st_size,file);
+ tmp[sbuf.st_size] = '\0';
+ }
+ fclose(file);
+ }
+ }
+
+ if ( tmp == NULL ) {
+ tmp = _XkbAlloc(strlen(_XkbKnownLanguages) + 1);
+ if (!tmp)
+ return NULL;
+ strcpy(tmp, _XkbKnownLanguages);
+ }
+ start = tmp;
+ do {
+ if ( (set=strchr(tmp,'=')) == NULL )
+ break;
+ *set++ = '\0';
+ if ( (next=strchr(set,':')) != NULL )
+ *next++ = '\0';
+ while ( tmp && *tmp ) {
+ if ( (end=strchr(tmp,',')) != NULL )
+ *end++ = '\0';
+ if ( Strcmp( tmp, lang ) == 0 ) {
+ strncpy(buf,set,100);
+ buf[99] = '\0';
+ Xfree(start);
+ return buf;
+ }
+ tmp = end;
+ }
+ tmp = next;
+ } while ( tmp && *tmp );
+ Xfree(start);
+ return NULL;
+}
+#else
+char *
+_XkbGetCharset()
+{
+ char *tmp;
+ XLCd lcd;
+
+ tmp = getenv( "_XKB_CHARSET" );
+ if ( tmp )
+ return tmp;
+
+ lcd = _XlcCurrentLC();
+ if ( lcd )
+ return XLC_PUBLIC(lcd,encoding_name);
+
+ return NULL;
+}
+#endif
+