diff options
Diffstat (limited to 'ncurses-5.9/ncurses/base/lib_insch.c')
| -rw-r--r-- | ncurses-5.9/ncurses/base/lib_insch.c | 169 |
1 files changed, 169 insertions, 0 deletions
diff --git a/ncurses-5.9/ncurses/base/lib_insch.c b/ncurses-5.9/ncurses/base/lib_insch.c new file mode 100644 index 0000000..66378c5 --- /dev/null +++ b/ncurses-5.9/ncurses/base/lib_insch.c @@ -0,0 +1,169 @@ +/**************************************************************************** + * Copyright (c) 1998-2008,2009 Free Software Foundation, Inc. * + * * + * Permission is hereby granted, free of charge, to any person obtaining a * + * copy of this software and associated documentation files (the * + * "Software"), to deal in the Software without restriction, including * + * without limitation the rights to use, copy, modify, merge, publish, * + * distribute, distribute with modifications, sublicense, and/or sell * + * copies of the Software, and to permit persons to whom the Software is * + * furnished to do so, subject to the following conditions: * + * * + * 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 ABOVE COPYRIGHT HOLDERS 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(s) of the above copyright * + * holders shall not be used in advertising or otherwise to promote the * + * sale, use or other dealings in this Software without prior written * + * authorization. * + ****************************************************************************/ + +/**************************************************************************** + * Author: Zeyd M. Ben-Halim <zmbenhal@netcom.com> 1992,1995 * + * and: Eric S. Raymond <esr@snark.thyrsus.com> * + * and: Sven Verdoolaege * + * and: Thomas E. Dickey * + ****************************************************************************/ + +/* +** lib_insch.c +** +** The routine winsch(). +** +*/ + +#include <curses.priv.h> +#include <ctype.h> + +MODULE_ID("$Id$") + +/* + * Insert the given character, updating the current location to simplify + * inserting a string. + */ +NCURSES_EXPORT(int) +_nc_insert_ch(SCREEN *sp, WINDOW *win, chtype ch) +{ + int code = OK; + NCURSES_CH_T wch; + int count; + NCURSES_CONST char *s; + int tabsize = ( +#if USE_REENTRANT + sp->_TABSIZE +#else + TABSIZE +#endif + ); + + switch (ch) { + case '\t': + for (count = (tabsize - (win->_curx % tabsize)); count > 0; count--) { + if ((code = _nc_insert_ch(sp, win, ' ')) != OK) + break; + } + break; + case '\n': + case '\r': + case '\b': + SetChar2(wch, ch); + _nc_waddch_nosync(win, wch); + break; + default: + if ( +#if USE_WIDEC_SUPPORT + WINDOW_EXT(win, addch_used) == 0 && +#endif + is8bits(ChCharOf(ch)) && + (isprint(ChCharOf(ch)) || + (ChAttrOf(ch) & A_ALTCHARSET) || + (sp != 0 && sp->_legacy_coding && !iscntrl(ChCharOf(ch))))) { + if (win->_curx <= win->_maxx) { + struct ldat *line = &(win->_line[win->_cury]); + NCURSES_CH_T *end = &(line->text[win->_curx]); + NCURSES_CH_T *temp1 = &(line->text[win->_maxx]); + NCURSES_CH_T *temp2 = temp1 - 1; + + SetChar2(wch, ch); + + CHANGED_TO_EOL(line, win->_curx, win->_maxx); + while (temp1 > end) + *temp1-- = *temp2--; + + *temp1 = _nc_render(win, wch); + win->_curx++; + } + } else if (is8bits(ChCharOf(ch)) && iscntrl(ChCharOf(ch))) { + s = NCURSES_SP_NAME(unctrl) (NCURSES_SP_ARGx ChCharOf(ch)); + while (*s != '\0') { + code = _nc_insert_ch(sp, win, ChAttrOf(ch) | UChar(*s)); + if (code != OK) + break; + ++s; + } + } +#if USE_WIDEC_SUPPORT + else { + /* + * Handle multibyte characters here + */ + SetChar2(wch, ch); + wch = _nc_render(win, wch); + count = _nc_build_wch(win, &wch); + if (count > 0) { + code = _nc_insert_wch(win, &wch); + } else if (count == -1) { + /* handle EILSEQ */ + if (is8bits(ch)) { + s = NCURSES_SP_NAME(unctrl) (NCURSES_SP_ARGx ChCharOf(ch)); + if (strlen(s) > 1) { + while (*s != '\0') { + code = _nc_insert_ch(sp, win, + ChAttrOf(ch) | UChar(*s)); + if (code != OK) + break; + ++s; + } + } else { + code = ERR; + } + } else { + code = ERR; + } + } + } +#endif + break; + } + return code; +} + +NCURSES_EXPORT(int) +winsch(WINDOW *win, chtype c) +{ + NCURSES_SIZE_T oy; + NCURSES_SIZE_T ox; + int code = ERR; + + T((T_CALLED("winsch(%p, %s)"), (void *) win, _tracechtype(c))); + + if (win != 0) { + oy = win->_cury; + ox = win->_curx; + + code = _nc_insert_ch(_nc_screen_of(win), win, c); + + win->_curx = ox; + win->_cury = oy; + _nc_synchook(win); + } + returnCode(code); +} |