/* $NetBSD: ins_wstr.c,v 1.14.2.1 2020/07/07 12:43:51 martin Exp $ */ /* * Copyright (c) 2005 The NetBSD Foundation Inc. * All rights reserved. * * This code is derived from code donated to the NetBSD Foundation * by Ruibiao Qiu . * * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. Neither the name of the NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. */ #include #ifndef lint __RCSID("$NetBSD: ins_wstr.c,v 1.14.2.1 2020/07/07 12:43:51 martin Exp $"); #endif /* not lint */ #include #include #include "curses.h" #include "curses_private.h" /* * ins_wstr -- * insert a multi-character wide-character string into the current window */ int ins_wstr(const wchar_t *wstr) { return wins_wstr(stdscr, wstr); } /* * ins_nwstr -- * insert a multi-character wide-character string into the current window * with at most n characters */ int ins_nwstr(const wchar_t *wstr, int n) { return wins_nwstr(stdscr, wstr, n); } /* * mvins_wstr -- * Do an insert-string on the line at (y, x). */ int mvins_wstr(int y, int x, const wchar_t *wstr) { return mvwins_wstr(stdscr, y, x, wstr); } /* * mvins_nwstr -- * Do an insert-n-string on the line at (y, x). */ int mvins_nwstr(int y, int x, const wchar_t *wstr, int n) { return mvwins_nwstr(stdscr, y, x, wstr, n); } /* * mvwins_wstr -- * Do an insert-string on the line at (y, x) in the given window. */ int mvwins_wstr(WINDOW *win, int y, int x, const wchar_t *wstr) { if (wmove(win, y, x) == ERR) return ERR; return wins_wstr(win, wstr); } /* * mvwins_nwstr -- * Do an insert-n-string on the line at (y, x) in the given window. */ int mvwins_nwstr(WINDOW *win, int y, int x, const wchar_t *wstr, int n) { if (wmove(win, y, x) == ERR) return ERR; return wins_nwstr(win, wstr, n); } /* * wins_wstr -- * Do an insert-string on the line, leaving (cury, curx) unchanged. */ int wins_wstr(WINDOW *win, const wchar_t *wstr) { return wins_nwstr(win, wstr, -1); } /* * wins_nwstr -- * Do an insert-n-string on the line, leaving (cury, curx) unchanged. */ int wins_nwstr(WINDOW *win, const wchar_t *wstr, int n) { __LDATA *start, *temp1, *temp2; __LINE *lnp; const wchar_t *scp; int width, len, sx, x, y, cw, pcw, newx; nschar_t *np; wchar_t ws[] = L" "; /* check for leading non-spacing character */ if (!wstr) return OK; cw = wcwidth(*wstr); if (cw < 0) cw = 1; if (!cw) return ERR; scp = wstr + 1; width = cw; len = 1; n--; while (*scp) { int w; if (!n) break; w = wcwidth(*scp); if (w < 0) w = 1; n--, len++, width += w; scp++; } #ifdef DEBUG __CTRACE(__CTRACE_INPUT, "wins_nwstr: width=%d,len=%d\n", width, len); #endif /* DEBUG */ if (cw > win->maxx - win->curx + 1) return ERR; start = &win->alines[win->cury]->line[win->curx]; sx = win->curx; lnp = win->alines[win->cury]; pcw = WCOL(*start); if (pcw < 0) { sx += pcw; start += pcw; } #ifdef DEBUG __CTRACE(__CTRACE_INPUT, "wins_nwstr: start@(%d)\n", sx); #endif /* DEBUG */ pcw = WCOL(*start); lnp->flags |= __ISDIRTY; newx = sx + win->ch_off; if (newx < *lnp->firstchp) *lnp->firstchp = newx; #ifdef DEBUG { __CTRACE(__CTRACE_INPUT, "========before=======\n"); for (x = 0; x < win->maxx; x++) __CTRACE(__CTRACE_INPUT, "wins_nwstr: (%d,%d)=(%x,%x,%p)\n", (int) win->cury, x, win->alines[win->cury]->line[x].ch, win->alines[win->cury]->line[x].attr, win->alines[win->cury]->line[x].nsp); } #endif /* DEBUG */ /* shift all complete characters */ if (sx + width + pcw <= win->maxx) { #ifdef DEBUG __CTRACE(__CTRACE_INPUT, "wins_nwstr: shift all characters\n"); #endif /* DEBUG */ temp1 = &win->alines[win->cury]->line[win->maxx - 1]; temp2 = temp1 - width; pcw = WCOL(*(temp2 + 1)); if (pcw < 0) { #ifdef DEBUG __CTRACE(__CTRACE_INPUT, "wins_nwstr: clear from %d to EOL(%d)\n", win->maxx + pcw, win->maxx - 1); #endif /* DEBUG */ temp2 += pcw; while (temp1 > temp2 + width) { temp1->ch = (wchar_t)btowc((int) win->bch); if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR) return ERR; temp1->attr = win->battr; SET_WCOL(*temp1, 1); #ifdef DEBUG __CTRACE(__CTRACE_INPUT, "wins_nwstr: empty cell(%p)\n", temp1); #endif /* DEBUG */ temp1--; } } while (temp2 >= start) { (void)memcpy(temp1, temp2, sizeof(__LDATA)); temp1--, temp2--; } #ifdef DEBUG { __CTRACE(__CTRACE_INPUT, "=====after shift====\n"); for (x = 0; x < win->maxx; x++) __CTRACE(__CTRACE_INPUT, "wins_nwstr: (%d,%d)=(%x,%x,%p)\n", (int) win->cury, x, win->alines[win->cury]->line[x].ch, win->alines[win->cury]->line[x].attr, win->alines[win->cury]->line[x].nsp); } #endif /* DEBUG */ } /* update string columns */ x = win->curx; y = win->cury; for (scp = wstr, temp1 = start; len; len--, scp++) { switch (*scp) { case L'\b': if (--x < 0) x = 0; win->curx = x; continue;; case L'\r': win->curx = 0; continue; case L'\n': wclrtoeol(win); if (y == win->scr_b) { if (!(win->flags & __SCROLLOK)) return ERR; scroll(win); } continue; case L'\t': if (wins_nwstr(win, ws, min(win->maxx - x, TABSIZE - (x % TABSIZE))) == ERR) return ERR; continue; } cw = wcwidth(*scp); if (cw < 0) cw = 1; if (cw) { /* 1st column */ temp1->ch = (wchar_t)*scp; temp1->attr = win->wattr; SET_WCOL(*temp1, cw); temp1->nsp = NULL; #ifdef DEBUG __CTRACE(__CTRACE_INPUT, "wins_nwstr: add spacing char(%x)\n", temp1->ch); #endif /* DEBUG */ temp2 = temp1++; if (cw > 1) { x = -1; while (temp1 < temp2 + cw) { /* the rest columns */ temp1->ch = (wchar_t)*scp; temp1->attr = win->wattr; temp1->nsp = NULL; SET_WCOL(*temp1, x); temp1++, x--; } temp1--; } } else { /* non-spacing character */ np = malloc(sizeof(nschar_t)); if (!np) return ERR; np->ch = *scp; np->next = temp1->nsp; temp1->nsp = np; #ifdef DEBUG __CTRACE(__CTRACE_INPUT, "wins_nstr: add non-spacing char(%x)\n", np->ch); #endif /* DEBUG */ } } #ifdef DEBUG { __CTRACE(__CTRACE_INPUT, "========after=======\n"); for (x = 0; x < win->maxx; x++) __CTRACE(__CTRACE_INPUT, "wins_nwstr: (%d,%d)=(%x,%x,%p)\n", (int) win->cury, x, win->alines[win->cury]->line[x].ch, win->alines[win->cury]->line[x].attr, win->alines[win->cury]->line[x].nsp); } #endif /* DEBUG */ newx = win->maxx - 1 + win->ch_off; if (newx > *lnp->lastchp) *lnp->lastchp = newx; __touchline(win, (int) win->cury, sx, (int) win->maxx - 1); __sync(win); return OK; }