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xenocara/lib/libX11/modules/im/ximcp/imLcLkup.c
matthieu f2c99c06c2 Update to libX11 1.6RC. No bump needed.
2013-04-28 16:55:55 +00:00

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/******************************************************************
Copyright 1992 by Fuji Xerox Co., Ltd.
Copyright 1992, 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,
FUJITSU LIMITED not be used in advertising or publicity pertaining
to distribution of the software without specific, written prior
permission. Fuji Xerox, FUJITSU LIMITED make no representations
about the suitability of this software for any purpose.
It is provided "as is" without express or implied warranty.
FUJI XEROX, FUJITSU LIMITED DISCLAIM ALL WARRANTIES WITH
REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL FUJI XEROX,
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.
Author: Kazunori Nishihara Fuji Xerox
Takashi Fujiwara FUJITSU LIMITED
fujiwara@a80.tech.yk.fujitsu.co.jp
******************************************************************/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <X11/Xatom.h>
#include <X11/Xos.h>
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include <X11/Xutil.h>
#include "Xlibint.h"
#include "Xlcint.h"
#include "XlcPubI.h"
#include "Ximint.h"
int
_XimLocalMbLookupString(XIC xic, XKeyEvent *ev, char *buffer, int bytes,
KeySym *keysym, Status *status)
{
Xic ic = (Xic)xic;
int ret;
DefTree *b = ic->private.local.base.tree;
char *mb = ic->private.local.base.mb;
if(ev->type != KeyPress) {
if(status) *status = XLookupNone;
return(0);
}
if(ev->keycode == 0 &&
( (ic->private.local.composed != 0)
||(ic->private.local.brl_committed != 0))) {
if (ic->private.local.brl_committed != 0) { /* Braille Event */
unsigned char pattern = ic->private.local.brl_committed;
char mb[XLC_PUBLIC(ic->core.im->core.lcd, mb_cur_max)];
ret = _Xlcwctomb(ic->core.im->core.lcd, mb, BRL_UC_ROW | pattern);
if(ret > bytes) {
if(status) *status = XBufferOverflow;
return(ret);
}
if(keysym) *keysym = XK_braille_blank | pattern;
if(ret > 0) {
if (keysym) {
if(status) *status = XLookupBoth;
} else {
if(status) *status = XLookupChars;
}
memcpy(buffer, mb, ret);
} else {
if(keysym) {
if(status) *status = XLookupKeySym;
} else {
if(status) *status = XLookupNone;
}
}
} else { /* Composed Event */
ret = strlen(&mb[b[ic->private.local.composed].mb]);
if(ret > bytes) {
if(status) *status = XBufferOverflow;
return(ret);
}
memcpy(buffer, &mb[b[ic->private.local.composed].mb], ret);
if(keysym) *keysym = b[ic->private.local.composed].ks;
if (ret > 0) {
if (keysym && *keysym != NoSymbol) {
if(status) *status = XLookupBoth;
} else {
if(status) *status = XLookupChars;
}
} else {
if(keysym && *keysym != NoSymbol) {
if(status) *status = XLookupKeySym;
} else {
if(status) *status = XLookupNone;
}
}
}
return (ret);
} else { /* Throughed Event */
ret = _XimLookupMBText(ic, ev, buffer, bytes, keysym, NULL);
if(ret > 0) {
if (ret > bytes) {
if (status) *status = XBufferOverflow;
} else if (keysym && *keysym != NoSymbol) {
if(status) *status = XLookupBoth;
} else {
if(status) *status = XLookupChars;
}
} else {
if(keysym && *keysym != NoSymbol) {
if(status) *status = XLookupKeySym;
} else {
if(status) *status = XLookupNone;
}
}
}
return (ret);
}
int
_XimLocalWcLookupString(XIC xic, XKeyEvent *ev, wchar_t *buffer, int wlen,
KeySym *keysym, Status *status)
{
Xic ic = (Xic)xic;
int ret;
DefTree *b = ic->private.local.base.tree;
wchar_t *wc = ic->private.local.base.wc;
if(ev->type != KeyPress) {
if(status) *status = XLookupNone;
return(0);
}
if(ev->keycode == 0) {
if (ic->private.local.brl_committed != 0) { /* Braille Event */
unsigned char pattern = ic->private.local.brl_committed;
ret = 1;
if (ret > wlen) {
if(status) *status = XBufferOverflow;
return (ret);
}
*buffer = BRL_UC_ROW | pattern;
if(keysym) {
*keysym = XK_braille_blank | pattern;
if(status) *status = XLookupBoth;
} else
if(status) *status = XLookupChars;
} else { /* Composed Event */
ret = _Xwcslen(&wc[b[ic->private.local.composed].wc]);
if(ret > wlen) {
if(status) *status = XBufferOverflow;
return (ret);
}
memcpy((char *)buffer, (char *)&wc[b[ic->private.local.composed].wc],
ret * sizeof(wchar_t));
if(keysym) *keysym = b[ic->private.local.composed].ks;
if (ret > 0) {
if (keysym && *keysym != NoSymbol) {
if(status) *status = XLookupBoth;
} else {
if(status) *status = XLookupChars;
}
} else {
if(keysym && *keysym != NoSymbol) {
if(status) *status = XLookupKeySym;
} else {
if(status) *status = XLookupNone;
}
}
}
return (ret);
} else { /* Throughed Event */
ret = _XimLookupWCText(ic, ev, buffer, wlen, keysym, NULL);
if(ret > 0) {
if (ret > wlen) {
if (status) *status = XBufferOverflow;
} else if (keysym && *keysym != NoSymbol) {
if(status) *status = XLookupBoth;
} else {
if(status) *status = XLookupChars;
}
} else {
if(keysym && *keysym != NoSymbol) {
if(status) *status = XLookupKeySym;
} else {
if(status) *status = XLookupNone;
}
}
}
return (ret);
}
int
_XimLocalUtf8LookupString(XIC xic, XKeyEvent *ev, char *buffer, int bytes,
KeySym *keysym, Status *status)
{
Xic ic = (Xic)xic;
int ret;
DefTree *b = ic->private.local.base.tree;
char *utf8 = ic->private.local.base.utf8;
if(ev->type != KeyPress) {
if(status) *status = XLookupNone;
return(0);
}
if(ev->keycode == 0) {
if (ic->private.local.brl_committed != 0) { /* Braille Event */
unsigned char pattern = ic->private.local.brl_committed;
ret = 3;
if (ret > bytes) {
if(status) *status = XBufferOverflow;
return (ret);
}
buffer[0] = 0xe0 | ((BRL_UC_ROW >> 12) & 0x0f);
buffer[1] = 0x80 | ((BRL_UC_ROW >> 8) & 0x30) | (pattern >> 6);
buffer[2] = 0x80 | (pattern & 0x3f);
if(keysym) {
*keysym = XK_braille_blank | pattern;
if(status) *status = XLookupBoth;
} else
if(status) *status = XLookupChars;
} else { /* Composed Event */
ret = strlen(&utf8[b[ic->private.local.composed].utf8]);
if(ret > bytes) {
if(status) *status = XBufferOverflow;
return (ret);
}
memcpy(buffer, &utf8[b[ic->private.local.composed].utf8], ret);
if(keysym) *keysym = b[ic->private.local.composed].ks;
if (ret > 0) {
if (keysym && *keysym != NoSymbol) {
if(status) *status = XLookupBoth;
} else {
if(status) *status = XLookupChars;
}
} else {
if(keysym && *keysym != NoSymbol) {
if(status) *status = XLookupKeySym;
} else {
if(status) *status = XLookupNone;
}
}
}
return (ret);
} else { /* Throughed Event */
ret = _XimLookupUTF8Text(ic, ev, buffer, bytes, keysym, NULL);
if(ret > 0) {
if (ret > bytes) {
if (status) *status = XBufferOverflow;
} else if (keysym && *keysym != NoSymbol) {
if(status) *status = XLookupBoth;
} else {
if(status) *status = XLookupChars;
}
} else {
if(keysym && *keysym != NoSymbol) {
if(status) *status = XLookupKeySym;
} else {
if(status) *status = XLookupNone;
}
}
}
return (ret);
}
static int
_XimLcctsconvert(
XlcConv conv,
char *from,
int from_len,
char *to,
int to_len,
Status *state)
{
int from_left;
int to_left;
int from_savelen;
int to_savelen;
int from_cnvlen;
int to_cnvlen;
char *from_buf;
char *to_buf;
char scratchbuf[BUFSIZ];
Status tmp_state;
if (!state)
state = &tmp_state;
if (!conv || !from || !from_len) {
*state = XLookupNone;
return 0;
}
/* Reset the converter. The CompoundText at 'from' starts in
initial state. */
_XlcResetConverter(conv);
from_left = from_len;
to_left = BUFSIZ;
from_cnvlen = 0;
to_cnvlen = 0;
for (;;) {
from_buf = &from[from_cnvlen];
from_savelen = from_left;
to_buf = &scratchbuf[to_cnvlen];
to_savelen = to_left;
if (_XlcConvert(conv, (XPointer *)&from_buf, &from_left,
(XPointer *)&to_buf, &to_left, NULL, 0) < 0) {
*state = XLookupNone;
return 0;
}
from_cnvlen += (from_savelen - from_left);
to_cnvlen += (to_savelen - to_left);
if (from_left == 0) {
if (!to_cnvlen) {
*state = XLookupNone;
return 0;
}
break;
}
}
if (!to || !to_len || (to_len < to_cnvlen)) {
*state = XBufferOverflow;
} else {
memcpy(to, scratchbuf, to_cnvlen);
*state = XLookupChars;
}
return to_cnvlen;
}
int
_XimLcctstombs(XIM xim, char *from, int from_len,
char *to, int to_len, Status *state)
{
return _XimLcctsconvert(((Xim)xim)->private.local.ctom_conv,
from, from_len, to, to_len, state);
}
int
_XimLcctstowcs(XIM xim, char *from, int from_len,
wchar_t *to, int to_len, Status *state)
{
Xim im = (Xim)xim;
XlcConv conv = im->private.local.ctow_conv;
int from_left;
int to_left;
int from_savelen;
int to_savelen;
int from_cnvlen;
int to_cnvlen;
char *from_buf;
wchar_t *to_buf;
wchar_t scratchbuf[BUFSIZ];
Status tmp_state;
if (!state)
state = &tmp_state;
if (!conv || !from || !from_len) {
*state = XLookupNone;
return 0;
}
/* Reset the converter. The CompoundText at 'from' starts in
initial state. */
_XlcResetConverter(conv);
from_left = from_len;
to_left = BUFSIZ;
from_cnvlen = 0;
to_cnvlen = 0;
for (;;) {
from_buf = &from[from_cnvlen];
from_savelen = from_left;
to_buf = &scratchbuf[to_cnvlen];
to_savelen = to_left;
if (_XlcConvert(conv, (XPointer *)&from_buf, &from_left,
(XPointer *)&to_buf, &to_left, NULL, 0) < 0) {
*state = XLookupNone;
return 0;
}
from_cnvlen += (from_savelen - from_left);
to_cnvlen += (to_savelen - to_left);
if (from_left == 0) {
if (!to_cnvlen){
*state = XLookupNone;
return 0;
}
break;
}
}
if (!to || !to_len || (to_len < to_cnvlen)) {
*state = XBufferOverflow;
} else {
memcpy(to, scratchbuf, to_cnvlen * sizeof(wchar_t));
*state = XLookupChars;
}
return to_cnvlen;
}
int
_XimLcctstoutf8(XIM xim, char *from, int from_len,
char *to, int to_len, Status *state)
{
return _XimLcctsconvert(((Xim)xim)->private.local.ctoutf8_conv,
from, from_len, to, to_len, state);
}
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