Annotation of src/lib/libcurses/ins_wch.c, Revision 1.13
1.13 ! blymn 1: /* $NetBSD: ins_wch.c,v 1.12 2018/11/22 22:16:45 uwe Exp $ */
1.1 blymn 2:
3: /*
4: * Copyright (c) 2005 The NetBSD Foundation Inc.
5: * All rights reserved.
6: *
7: * This code is derived from code donated to the NetBSD Foundation
8: * by Ruibiao Qiu <ruibiao@arl.wustl.edu,ruibiao@gmail.com>.
9: *
10: *
11: * Redistribution and use in source and binary forms, with or without
12: * modification, are permitted provided that the following conditions
13: * are met:
14: * 1. Redistributions of source code must retain the above copyright
15: * notice, this list of conditions and the following disclaimer.
16: * 2. Redistributions in binary form must reproduce the above copyright
17: * notice, this list of conditions and the following disclaimer in the
18: * documentation and/or other materials provided with the distribution.
19: * 3. Neither the name of the NetBSD Foundation nor the names of its
20: * contributors may be used to endorse or promote products derived
21: * from this software without specific prior written permission.
22: *
23: * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND
24: * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
25: * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
26: * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34: * SUCH DAMAGE.
35: */
36:
37: #include <sys/cdefs.h>
38: #ifndef lint
1.13 ! blymn 39: __RCSID("$NetBSD: ins_wch.c,v 1.12 2018/11/22 22:16:45 uwe Exp $");
1.1 blymn 40: #endif /* not lint */
41:
42: #include <string.h>
43: #include <stdlib.h>
44:
45: #include "curses.h"
46: #include "curses_private.h"
47:
48: /*
49: * ins_wch --
50: * Do an insert-char on the line, leaving (cury, curx) unchanged.
51: */
52: int
53: ins_wch(const cchar_t *wch)
54: {
55: return wins_wch(stdscr, wch);
56: }
57:
58: /*
59: * mvins_wch --
60: * Do an insert-char on the line at (y, x).
61: */
62: int
63: mvins_wch(int y, int x, const cchar_t *wch)
64: {
65: return mvwins_wch(stdscr, y, x, wch);
66: }
67:
68: /*
69: * mvwins_wch --
70: * Do an insert-char on the line at (y, x) in the given window.
71: */
72: int
73: mvwins_wch(WINDOW *win, int y, int x, const cchar_t *wch)
74: {
1.13 ! blymn 75: if (_cursesi_wmove(win, y, x, 0) == ERR)
1.1 blymn 76: return ERR;
77:
78: return wins_wch(stdscr, wch);
79: }
80:
81: /*
82: * wins_wch --
83: * Do an insert-char on the line, leaving (cury, curx) unchanged.
84: */
85: int
86: wins_wch(WINDOW *win, const cchar_t *wch)
87: {
88: __LDATA *start, *temp1, *temp2;
89: __LINE *lnp;
1.11 roy 90: int cw, pcw, x, y, sx, ex, newx, i;
1.1 blymn 91: nschar_t *np, *tnp;
92: wchar_t ws[] = L" ";
93:
94: /* check for non-spacing characters */
1.9 roy 95: if (!wch)
1.1 blymn 96: return OK;
97: cw = wcwidth(wch->vals[0]);
1.5 drochner 98: if (cw < 0)
99: cw = 1;
1.1 blymn 100: if (!cw)
101: return wadd_wch( win, wch );
102:
103: #ifdef DEBUG
1.2 blymn 104: __CTRACE(__CTRACE_INPUT, "--before--\n");
1.9 roy 105: for (x = 0; x < win->maxx; x++)
1.2 blymn 106: __CTRACE(__CTRACE_INPUT, "wins_wch: (0,%d)=(%x,%x,%p)\n", x,
1.4 roy 107: win->alines[0]->line[x].ch,
108: win->alines[0]->line[x].attr,
109: win->alines[0]->line[x].nsp);
1.1 blymn 110: #endif /* DEBUG */
111: x = win->curx;
112: y = win->cury;
113: #ifdef DEBUG
1.2 blymn 114: __CTRACE(__CTRACE_INPUT, "wins_wch: (%d,%d)\n", y, x);
1.1 blymn 115: #endif /* DEBUG */
1.9 roy 116: switch (wch->vals[0]) {
1.1 blymn 117: case L'\b':
1.9 roy 118: if (--x < 0)
1.1 blymn 119: x = 0;
120: win->curx = x;
121: return OK;
122: case L'\r':
123: win->curx = 0;
124: return OK;
125: case L'\n':
1.9 roy 126: wclrtoeol(win);
1.1 blymn 127: if (y == win->scr_b) {
128: if (!(win->flags & __SCROLLOK))
129: return ERR;
130: scroll(win);
131: }
132: return OK;
133: case L'\t':
1.6 roy 134: if (wins_nwstr(win, ws, min(win->maxx - x,
1.11 roy 135: TABSIZE - (x % TABSIZE))) == ERR)
1.1 blymn 136: return ERR;
137: return OK;
138: }
139:
140: /* locate current cell */
141: x = win->curx;
142: y = win->cury;
1.9 roy 143: lnp = win->alines[y];
144: start = &win->alines[y]->line[x];
1.1 blymn 145: sx = x;
1.9 roy 146: pcw = WCOL(*start);
1.1 blymn 147: if (pcw < 0) {
148: start += pcw;
149: sx += pcw;
150: }
1.9 roy 151: if (cw > win->maxx - sx)
1.1 blymn 152: return ERR;
153: lnp->flags |= __ISDIRTY;
154: newx = sx + win->ch_off;
1.9 roy 155: if (newx < *lnp->firstchp)
1.1 blymn 156: *lnp->firstchp = newx;
157:
158: /* shift all complete characters */
159: #ifdef DEBUG
1.2 blymn 160: __CTRACE(__CTRACE_INPUT, "wins_wch: shift all characters\n");
1.1 blymn 161: #endif /* DEBUG */
1.9 roy 162: temp1 = &win->alines[y]->line[win->maxx - 1];
1.1 blymn 163: temp2 = temp1 - cw;
164: pcw = WCOL(*(temp2 + 1));
165: if (pcw < 0) {
166: #ifdef DEBUG
1.2 blymn 167: __CTRACE(__CTRACE_INPUT, "wins_wch: clear EOL\n");
1.1 blymn 168: #endif /* DEBUG */
169: temp2 += pcw;
1.9 roy 170: while (temp1 > temp2 + cw) {
1.1 blymn 171: np = temp1->nsp;
172: if (np) {
1.9 roy 173: while (np) {
1.1 blymn 174: tnp = np->next;
1.9 roy 175: free(np);
1.1 blymn 176: np = tnp;
177: }
178: temp1->nsp = NULL;
179: }
1.9 roy 180: temp1->ch = (wchar_t)btowc((int)win->bch );
1.1 blymn 181: if (_cursesi_copy_nsp(win->bnsp, temp1) == ERR)
182: return ERR;
183: temp1->attr = win->battr;
1.9 roy 184: SET_WCOL(*temp1, 1);
1.1 blymn 185: temp1--;
186: }
187: }
1.9 roy 188: while (temp2 >= start) {
189: (void)memcpy(temp1, temp2, sizeof(__LDATA));
1.1 blymn 190: temp1--, temp2--;
191: }
192:
193: /* update character under cursor */
194: start->nsp = NULL;
1.9 roy 195: start->ch = wch->vals[0];
1.1 blymn 196: start->attr = wch->attributes & WA_ATTRIBUTES;
1.9 roy 197: SET_WCOL(*start, cw);
198: if (wch->elements > 1) {
199: for (i = 1; i < wch->elements; i++) {
1.7 christos 200: np = malloc(sizeof(nschar_t));
1.1 blymn 201: if (!np)
202: return ERR;
1.9 roy 203: np->ch = wch->vals[i];
1.1 blymn 204: np->next = start->nsp;
205: start->nsp = np;
206: }
207: }
208: #ifdef DEBUG
1.2 blymn 209: __CTRACE(__CTRACE_INPUT, "wins_wch: insert (%x,%x,%p)\n",
210: start->ch, start->attr, start->nsp);
1.1 blymn 211: #endif /* DEBUG */
212: temp1 = start + 1;
213: ex = x + 1;
1.9 roy 214: while (ex - x < cw) {
215: temp1->ch = wch->vals[0];
216: SET_WCOL(*temp1, x - ex);
1.1 blymn 217: temp1->nsp = NULL;
218: ex++, temp1++;
219: }
220: #ifdef DEBUG
221: {
1.2 blymn 222: __CTRACE(__CTRACE_INPUT, "--after---\n");
1.9 roy 223: for (x = 0; x < win->maxx; x++)
1.2 blymn 224: __CTRACE(__CTRACE_INPUT,
225: "wins_wch: (0,%d)=(%x,%x,%p)\n", x,
1.4 roy 226: win->alines[0]->line[x].ch,
227: win->alines[0]->line[x].attr,
228: win->alines[0]->line[x].nsp);
1.1 blymn 229: }
230: #endif /* DEBUG */
231: newx = win->maxx - 1 + win->ch_off;
1.9 roy 232: if (newx > *lnp->lastchp)
1.1 blymn 233: *lnp->lastchp = newx;
1.9 roy 234: __touchline(win, y, sx, (int)win->maxx - 1);
1.8 roy 235: __sync(win);
1.1 blymn 236: return OK;
237: }
CVSweb <webmaster@jp.NetBSD.org>
![[BACK]](/icons/back.gif){kind=icon}
Return to ins_wch.c CVS log ![[TXT]](/icons/text.gif){kind=icon}
![[DIR]](/icons/dir.gif){kind=icon}
Up to [cvs.NetBSD.org] / src / lib / libcurses