mirror of
https://github.com/Aigor44/ncursesw-morphos.git
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d1a026123a
+ add case to CF_SHARED_OPTS for Interix (patch by Markus Duft). + used ncurses/link_test to check for behavior when the terminal has not been initialized and when an application passes null pointers to the library. Added checks to cover this (prompted by Redhat #707344). + modify MKlib_gen.sh to make its main() function call each function with zero parameters, to help find inconsistent checking for null pointers, etc.
117 lines
4.3 KiB
C
117 lines
4.3 KiB
C
/****************************************************************************
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* Copyright (c) 2002-2010,2011 Free Software Foundation, Inc. *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a *
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* copy of this software and associated documentation files (the *
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* "Software"), to deal in the Software without restriction, including *
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* without limitation the rights to use, copy, modify, merge, publish, *
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* distribute, distribute with modifications, sublicense, and/or sell *
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* copies of the Software, and to permit persons to whom the Software is *
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* furnished to do so, subject to the following conditions: *
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* *
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* The above copyright notice and this permission notice shall be included *
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* in all copies or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS *
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF *
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. *
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* IN NO EVENT SHALL THE ABOVE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, *
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* DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR *
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* OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR *
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* THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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* *
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* Except as contained in this notice, the name(s) of the above copyright *
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* holders shall not be used in advertising or otherwise to promote the *
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* sale, use or other dealings in this Software without prior written *
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* authorization. *
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****************************************************************************/
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/****************************************************************************
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* Author: Thomas E. Dickey 2002-on *
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****************************************************************************/
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/*
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** lib_get_wch.c
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**
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** The routine get_wch().
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**
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*/
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#include <curses.priv.h>
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#include <ctype.h>
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MODULE_ID("$Id: lib_get_wch.c,v 1.23 2011/05/28 23:00:29 tom Exp $")
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NCURSES_EXPORT(int)
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wget_wch(WINDOW *win, wint_t *result)
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{
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SCREEN *sp;
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int code;
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char buffer[(MB_LEN_MAX * 9) + 1]; /* allow some redundant shifts */
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int status;
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size_t count = 0;
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int value = 0;
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wchar_t wch;
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#ifndef state_unused
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mbstate_t state;
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#endif
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T((T_CALLED("wget_wch(%p)"), (void *) win));
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/*
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* We can get a stream of single-byte characters and KEY_xxx codes from
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* _nc_wgetch(), while we want to return a wide character or KEY_xxx code.
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*/
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_nc_lock_global(curses);
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sp = _nc_screen_of(win);
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if (sp != 0) {
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for (;;) {
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T(("reading %d of %d", (int) count + 1, (int) sizeof(buffer)));
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code = _nc_wgetch(win, &value, TRUE EVENTLIST_2nd((_nc_eventlist
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*) 0));
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if (code == ERR) {
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break;
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} else if (code == KEY_CODE_YES) {
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/*
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* If we were processing an incomplete multibyte character,
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* return an error since we have a KEY_xxx code which
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* interrupts it. For some cases, we could improve this by
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* writing a new version of lib_getch.c(!), but it is not clear
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* whether the improvement would be worth the effort.
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*/
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if (count != 0) {
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safe_ungetch(SP_PARM, value);
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code = ERR;
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}
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break;
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} else if (count + 1 >= sizeof(buffer)) {
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safe_ungetch(SP_PARM, value);
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code = ERR;
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break;
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} else {
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buffer[count++] = (char) UChar(value);
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reset_mbytes(state);
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status = count_mbytes(buffer, count, state);
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if (status >= 0) {
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reset_mbytes(state);
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if (check_mbytes(wch, buffer, count, state) != status) {
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code = ERR; /* the two calls should match */
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safe_ungetch(SP_PARM, value);
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}
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value = wch;
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break;
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}
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}
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}
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} else {
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code = ERR;
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}
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if (result != 0)
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*result = (wint_t) value;
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_nc_unlock_global(curses);
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T(("result %#o", value));
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returnCode(code);
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}
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