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Diffstat (limited to 'nx-X11/lib/X11/imConv.c')
-rw-r--r-- | nx-X11/lib/X11/imConv.c | 359 |
1 files changed, 359 insertions, 0 deletions
diff --git a/nx-X11/lib/X11/imConv.c b/nx-X11/lib/X11/imConv.c new file mode 100644 index 000000000..f519401e4 --- /dev/null +++ b/nx-X11/lib/X11/imConv.c @@ -0,0 +1,359 @@ +/* $TOG: imConv.c /main/20 1998/06/17 15:46:41 kaleb $ */ +/****************************************************************** + + Copyright 1991, 1992 by Fuji Xerox Co.,Ltd. + Copyright 1993, 1994 by FUJITSU LIMITED + +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, and that the name of Fuji Xerox Co.,Ltd. +, and that the name of FUJITSU LIMITED not be used in advertising or +publicity pertaining to distribution of the software without specific, + written prior permission. +Fuji Xerox Co.,Ltd. , and FUJITSU LIMITED makes no representations about +the suitability of this software for any purpose. +It is provided "as is" without express or implied warranty. + +FUJI XEROX CO.,LTD. AND FUJITSU LIMITED DISCLAIMS ALL WARRANTIES WITH +REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL FUJI XEROX CO.,LTD. +AND FUJITSU LIMITED BE LIABLE FOR ANY SPECIAL, INDIRECT +OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM +LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, +NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH +THE USE OR PERFORMANCE OF THIS SOFTWARE. + + Auther: Kazunori Nishihara, Fuji Xerox Co.,Ltd. + kaz@ssdev.ksp.fujixerox.co.jp + Modifier: Takashi Fujiwara FUJITSU LIMITED + fujiwara@a80.tech.yk.fujitsu.co.jp + +******************************************************************/ +/* 2000 Modifier: Ivan Pascal The XFree86 Project. + */ +/* $XFree86: xc/lib/X11/imConv.c,v 1.32 2003/04/13 19:22:20 dawes Exp $ */ + +#define NEED_EVENTS +#ifdef HAVE_CONFIG_H +#include <config.h> +#endif +#include <stdio.h> +#include "Xlibint.h" +#include "Xlcint.h" +#include "Ximint.h" +#include "XlcPubI.h" + +#ifdef XKB +/* + * rather than just call _XLookupString (i.e. the pre-XKB XLookupString) + * do this because with XKB the event may have some funky modifiers that + * _XLookupString doesn't grok. + */ +#include "XKBlib.h" +#define XLOOKUPSTRING lookup_string +#else +#define XLOOKUPSTRING XLookupString +#endif + +typedef unsigned int ucs4_t; + +typedef int (*ucstocsConvProc)( + XPointer, + unsigned char *, + ucs4_t, + int +); + +struct SubstRec { + char* encoding_name; + char* charset_name; +}; + +static struct SubstRec SubstTable[] = { + {"STRING", "ISO8859-1"}, + {"TIS620", "TIS620-0"}, + {"UTF-8", "ISO10646-1"} +}; +#define num_substitute (sizeof SubstTable / sizeof SubstTable[0]) + +/* + * Given the name of a charset, returns the pointer to convertors + * from UCS char to specified charset char. + * This converter is needed for _XimGetCharCode subroutine. + */ +XPointer +_XimGetLocaleCode ( + _Xconst char* encoding_name) +{ + XPointer cvt = _Utf8GetConvByName(encoding_name); + if (!cvt && encoding_name) { + int i; + for (i = 0; i < num_substitute; i++) + if (!strcmp(encoding_name, SubstTable[i].encoding_name)) + return _Utf8GetConvByName(SubstTable[i].charset_name); + } + return cvt; +} + +/* + * Returns the locale dependent representation of a keysym. + * The locale's encoding is passed in form of pointer to UCS convertor. + * The resulting multi-byte sequence is placed starting at buf (a buffer + * with nbytes bytes, nbytes should be >= 8) and is NUL terminated. + * Returns the length of the resulting multi-byte sequence, excluding the + * terminating NUL byte. Return 0 if the keysym is not representable in the + * locale + */ +/*ARGSUSED*/ +int +_XimGetCharCode ( + XPointer ucs_conv, + KeySym keysym, + unsigned char* buf, + int nbytes) +{ + int count = 0; + ucstocsConvProc cvt = (ucstocsConvProc) ucs_conv; + ucs4_t ucs4; + + if (keysym < 0x80) { + buf[0] = (char) keysym; + count = 1; + } else if (cvt) { + ucs4 = KeySymToUcs4(keysym); + if (ucs4) + count = (*cvt)((XPointer)NULL, buf, ucs4, nbytes); + } + + if (count < 0) + count = 0; + if (count>nbytes) + return nbytes; + if (count<nbytes) + buf[count]= '\0'; + return count; +} + +#ifdef XKB +static int lookup_string( + XKeyEvent* event, + char* buffer, + int nbytes, + KeySym* keysym, + XComposeStatus* status) +{ + int ret; + unsigned ctrls = XkbGetXlibControls (event->display); + XkbSetXlibControls (event->display, + XkbLC_ForceLatin1Lookup, XkbLC_ForceLatin1Lookup); + ret = XLookupString(event, (char *)buffer, nbytes, keysym, status); + XkbSetXlibControls (event->display, + XkbLC_ForceLatin1Lookup, ctrls); + return ret; +} +#endif + +#define BUF_SIZE (20) + +int +_XimLookupMBText(ic, event, buffer, nbytes, keysym, status) + Xic ic; + XKeyEvent* event; + char* buffer; + int nbytes; + KeySym* keysym; + XComposeStatus* status; +{ + int count; + KeySym symbol; + Status dummy; + Xim im = (Xim)ic->core.im; + XimCommonPrivateRec* private = &im->private.common; + unsigned char look[BUF_SIZE]; + ucs4_t ucs4; + + /* force a latin-1 lookup for compatibility */ + count = XLOOKUPSTRING(event, (char *)buffer, nbytes, &symbol, status); + if (keysym != NULL) *keysym = symbol; + if ((nbytes == 0) || (symbol == NoSymbol)) return count; + + if (count > 1) { + memcpy(look, (char *)buffer,count); + look[count] = '\0'; + if ((count = im->methods->ctstombs(ic->core.im, + (char*) look, count, + buffer, nbytes, &dummy)) < 0) { + count = 0; + } + } else if ((count == 0) || + (count == 1 && (symbol > 0x7f && symbol < 0xff00))) { + + XPointer from = (XPointer) &ucs4; + XPointer to = (XPointer) look; + int from_len = 1; + int to_len = BUF_SIZE; + XPointer args[1]; + XlcCharSet charset; + args[0] = (XPointer) &charset; + ucs4 = (ucs4_t) KeySymToUcs4(symbol); + if (!ucs4) + return 0; + + if (_XlcConvert(private->ucstoc_conv, + &from, &from_len, &to, &to_len, + args, 1 ) != 0) { + count = 0; + } else { + from = (XPointer) look; + to = (XPointer) buffer; + from_len = BUF_SIZE - to_len; + to_len = nbytes; + args[0] = (XPointer) charset; + if (_XlcConvert(private->cstomb_conv, + &from, &from_len, &to, &to_len, + args, 1 ) != 0) { + count = 0; + } else { + count = nbytes - to_len; + } + } + } + /* FIXME: + * we should make sure that if the character is a Latin1 character + * and it's on the right side, and we're in a non-Latin1 locale + * that this is a valid Latin1 character for this locale. + */ + return count; +} + +int +_XimLookupWCText(ic, event, buffer, nbytes, keysym, status) + Xic ic; + XKeyEvent* event; + wchar_t* buffer; + int nbytes; + KeySym* keysym; + XComposeStatus* status; +{ + int count; + KeySym symbol; + Status dummy; + Xim im = (Xim)ic->core.im; + XimCommonPrivateRec* private = &im->private.common; + unsigned char look[BUF_SIZE]; + ucs4_t ucs4; + + /* force a latin-1 lookup for compatibility */ + count = XLOOKUPSTRING(event, (char *)look, nbytes, &symbol, status); + if (keysym != NULL) *keysym = symbol; + if ((nbytes == 0) || (symbol == NoSymbol)) return count; + + if (count > 1) { + if ((count = im->methods->ctstowcs(ic->core.im, + (char*) look, count, + buffer, nbytes, &dummy)) < 0) { + count = 0; + } + } else if ((count == 0) || + (count == 1 && (symbol > 0x7f && symbol < 0xff00))) { + + XPointer from = (XPointer) &ucs4; + XPointer to = (XPointer) look; + int from_len = 1; + int to_len = BUF_SIZE; + XPointer args[1]; + XlcCharSet charset; + args[0] = (XPointer) &charset; + ucs4 = (ucs4_t) KeySymToUcs4(symbol); + if (!ucs4) + return 0; + + if (_XlcConvert(private->ucstoc_conv, + &from, &from_len, &to, &to_len, + args, 1 ) != 0) { + count = 0; + } else { + from = (XPointer) look; + to = (XPointer) buffer; + from_len = BUF_SIZE - to_len; + to_len = nbytes; + args[0] = (XPointer) charset; + + if (_XlcConvert(private->cstowc_conv, + &from, &from_len, &to, &to_len, + args, 1 ) != 0) { + count = 0; + } else { + count = nbytes - to_len; + } + } + } else + /* FIXME: + * we should make sure that if the character is a Latin1 character + * and it's on the right side, and we're in a non-Latin1 locale + * that this is a valid Latin1 character for this locale. + */ + buffer[0] = look[0]; + + return count; +} + +int +_XimLookupUTF8Text(ic, event, buffer, nbytes, keysym, status) + Xic ic; + XKeyEvent* event; + char* buffer; + int nbytes; + KeySym* keysym; + XComposeStatus* status; +{ + int count; + KeySym symbol; + Status dummy; + Xim im = (Xim)ic->core.im; + XimCommonPrivateRec* private = &im->private.common; + unsigned char look[BUF_SIZE]; + ucs4_t ucs4; + + /* force a latin-1 lookup for compatibility */ + count = XLOOKUPSTRING(event, (char *)buffer, nbytes, &symbol, status); + if (keysym != NULL) *keysym = symbol; + if ((nbytes == 0) || (symbol == NoSymbol)) return count; + + if (count > 1) { + memcpy(look, (char *)buffer,count); + look[count] = '\0'; + if ((count = im->methods->ctstoutf8(ic->core.im, + (char*) look, count, + buffer, nbytes, &dummy)) < 0) { + count = 0; + } + } else if ((count == 0) || + (count == 1 && (symbol > 0x7f && symbol < 0xff00))) { + + XPointer from = (XPointer) &ucs4; + int from_len = 1; + XPointer to = (XPointer) buffer; + int to_len = nbytes; + + ucs4 = (ucs4_t) KeySymToUcs4(symbol); + if (!ucs4) + return 0; + + if (_XlcConvert(private->ucstoutf8_conv, + &from, &from_len, &to, &to_len, + NULL, 0) != 0) { + count = 0; + } else { + count = nbytes - to_len; + } + } + /* FIXME: + * we should make sure that if the character is a Latin1 character + * and it's on the right side, and we're in a non-Latin1 locale + * that this is a valid Latin1 character for this locale. + */ + return count; +} |