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1
by Nathaniel McCallum
Import upstream version 4.0.2 |
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/* Copyright (c) 1993-2002
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* Juergen Weigert (jnweiger@immd4.informatik.uni-erlangen.de)
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* Michael Schroeder (mlschroe@immd4.informatik.uni-erlangen.de)
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* Copyright (c) 1987 Oliver Laumann
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2, or (at your option)
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* any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program (see the file COPYING); if not, write to the
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* Free Software Foundation, Inc.,
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* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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*
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****************************************************************
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*/
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#include <sys/types.h> |
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#include "config.h" |
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#include "screen.h" |
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#include "extern.h" |
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#define INPUTLINE (flayer->l_height - 1)
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static void InpProcess __P((char **, int *)); |
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static void InpAbort __P((void)); |
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static void InpRedisplayLine __P((int, int, int, int)); |
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extern struct layer *flayer; |
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extern struct display *display; |
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extern struct mchar mchar_blank, mchar_so; |
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struct inpline |
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{
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char buf[101]; /* text buffer */ |
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int len; /* length of the editible string */ |
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int pos; /* cursor position in editable string */ |
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};
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static struct inpline inphist; /* XXX: should be a dynamic list */ |
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struct inpdata |
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{
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struct inpline inp; |
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int inpmaxlen; /* 100, or less, if caller has shorter buffer */ |
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char *inpstring; /* the prompt */ |
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int inpstringlen; /* length of the prompt */ |
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int inpmode; /* INP_NOECHO, INP_RAW, INP_EVERY */ |
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void (*inpfinfunc) __P((char *buf, int len, char *priv)); |
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char *priv; /* private data for finfunc */ |
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};
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static struct LayFuncs InpLf = |
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{
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InpProcess, |
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InpAbort, |
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InpRedisplayLine, |
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DefClearLine, |
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DefRewrite, |
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DefResize, |
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DefRestore
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};
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/*
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** Here is the input routine
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*/
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/* called once, after InitOverlayPage in Input() or Isearch() */
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void
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inp_setprompt(p, s) |
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char *p, *s; |
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{
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struct inpdata *inpdata; |
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inpdata = (struct inpdata *)flayer->l_data; |
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if (p) |
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{
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inpdata->inpstringlen = strlen(p); |
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inpdata->inpstring = p; |
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}
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if (s) |
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{
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if (s != inpdata->inp.buf) |
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strncpy(inpdata->inp.buf, s, sizeof(inpdata->inp.buf) - 1); |
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inpdata->inp.buf[sizeof(inpdata->inp.buf) - 1] = 0; |
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inpdata->inp.pos = inpdata->inp.len = strlen(inpdata->inp.buf); |
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}
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InpRedisplayLine(INPUTLINE, 0, flayer->l_width - 1, 0); |
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}
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/*
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* We dont use HS status line with Input().
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* If we would use it, then we should check e_tgetflag("es") if
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* we are allowed to use esc sequences there.
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*
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* mode is an OR of
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* INP_NOECHO == suppress echoing of characters.
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* INP_RAW == raw mode. call finfunc after each character typed.
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* INP_EVERY == digraph mode.
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*/
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void
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Input(istr, len, mode, finfunc, data) |
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char *istr; |
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int len; |
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int mode; |
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void (*finfunc) __P((char *buf, int len, char *data)); |
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char *data; |
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{
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int maxlen; |
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struct inpdata *inpdata; |
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if (len > 100) |
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len = 100; |
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if (!(mode & INP_NOECHO)) |
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{
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maxlen = flayer->l_width - 1 - strlen(istr); |
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if (len > maxlen) |
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len = maxlen; |
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}
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if (len < 0) |
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{
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LMsg(0, "Width %d chars too small", -len); |
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return; |
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}
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if (InitOverlayPage(sizeof(*inpdata), &InpLf, 1)) |
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return; |
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inpdata = (struct inpdata *)flayer->l_data; |
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inpdata->inpmaxlen = len; |
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inpdata->inpfinfunc = finfunc; |
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inpdata->inp.pos = inpdata->inp.len = 0; |
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inpdata->inpmode = mode; |
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inpdata->priv = data; |
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inp_setprompt(istr, (char *)NULL); |
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flayer->l_x = inpdata->inpstringlen; |
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flayer->l_y = INPUTLINE; |
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}
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static void |
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InpProcess(ppbuf, plen) |
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char **ppbuf; |
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int *plen; |
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{
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int len, x; |
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char *pbuf; |
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char ch; |
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struct inpdata *inpdata; |
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struct display *inpdisplay; |
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inpdata = (struct inpdata *)flayer->l_data; |
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inpdisplay = display; |
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LGotoPos(flayer, inpdata->inpstringlen + (inpdata->inpmode & INP_NOECHO ? 0 : inpdata->inp.pos), INPUTLINE); |
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if (ppbuf == 0) |
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{
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InpAbort(); |
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return; |
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}
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x = inpdata->inpstringlen + inpdata->inp.pos; |
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len = *plen; |
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pbuf = *ppbuf; |
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while (len) |
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{
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char *p = inpdata->inp.buf + inpdata->inp.pos; |
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ch = *pbuf++; |
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len--; |
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if (inpdata->inpmode & INP_EVERY) |
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{
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inpdata->inp.buf[inpdata->inp.len] = ch; |
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inpdata->inp.buf[inpdata->inp.len + 1] = ch; /* gross */ |
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display = inpdisplay; |
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(*inpdata->inpfinfunc)(inpdata->inp.buf, inpdata->inp.len, inpdata->priv); |
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ch = inpdata->inp.buf[inpdata->inp.len]; |
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}
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else if (inpdata->inpmode & INP_RAW) |
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{
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display = inpdisplay; |
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(*inpdata->inpfinfunc)(&ch, 1, inpdata->priv); /* raw */ |
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if (ch) |
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continue; |
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}
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if (((unsigned char)ch & 0177) >= ' ' && ch != 0177 && inpdata->inp.len < inpdata->inpmaxlen) |
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{
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if (inpdata->inp.len > inpdata->inp.pos) |
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bcopy(p, p+1, inpdata->inp.len - inpdata->inp.pos); |
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inpdata->inp.buf[inpdata->inp.pos++] = ch; |
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inpdata->inp.len++; |
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if (!(inpdata->inpmode & INP_NOECHO)) |
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{
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struct mchar mc; |
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mc = mchar_so; |
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mc.image = *p++; |
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LPutChar(flayer, &mc, x, INPUTLINE); |
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x++; |
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if (p < inpdata->inp.buf+inpdata->inp.len) |
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{
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while (p < inpdata->inp.buf+inpdata->inp.len) |
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{
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mc.image = *p++; |
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LPutChar(flayer, &mc, x++, INPUTLINE); |
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}
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x = inpdata->inpstringlen + inpdata->inp.pos; |
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LGotoPos(flayer, x, INPUTLINE); |
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}
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}
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}
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else if ((ch == '\b' || ch == 0177) && inpdata->inp.pos > 0) |
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{
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if (inpdata->inp.len > inpdata->inp.pos) |
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bcopy(p, p-1, inpdata->inp.len - inpdata->inp.pos); |
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inpdata->inp.len--; |
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inpdata->inp.pos--; |
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p--; |
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if (!(inpdata->inpmode & INP_NOECHO)) |
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{
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struct mchar mc; |
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mc = mchar_so; |
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x--; |
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while (p < inpdata->inp.buf+inpdata->inp.len) |
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{
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mc.image = *p++; |
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LPutChar(flayer, &mc, x++, INPUTLINE); |
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}
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LPutChar(flayer, &mchar_blank, x, INPUTLINE); |
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x = inpdata->inpstringlen + inpdata->inp.pos; |
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LGotoPos(flayer, x, INPUTLINE); |
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}
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}
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else if (ch == '\025') /* CTRL-U */ |
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{
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x = inpdata->inpstringlen; |
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if (inpdata->inp.len && !(inpdata->inpmode & INP_NOECHO)) |
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{
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LClearArea(flayer, x, INPUTLINE, x + inpdata->inp.len - 1, INPUTLINE, 0, 0); |
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LGotoPos(flayer, x, INPUTLINE); |
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}
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inpdata->inp.len = inpdata->inp.pos = 0; |
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}
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else if (ch == '\013') /* CTRL-K */ |
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{
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x = inpdata->inpstringlen + inpdata->inp.pos; |
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if (inpdata->inp.len > inpdata->inp.pos && !(inpdata->inpmode & INP_NOECHO)) |
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{
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LClearArea(flayer, x, INPUTLINE, x + inpdata->inp.len - inpdata->inp.pos - 1, INPUTLINE, 0, 0); |
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LGotoPos(flayer, x, INPUTLINE); |
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}
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inpdata->inp.len = inpdata->inp.pos; |
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}
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else if (ch == '\001' || (unsigned char)ch == 0201) /* CTRL-A */ |
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{
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LGotoPos(flayer, x -= inpdata->inp.pos, INPUTLINE); |
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inpdata->inp.pos = 0; |
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}
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else if ((ch == '\002' || (unsigned char)ch == 0202) && inpdata->inp.pos > 0) /* CTRL-B */ |
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{
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LGotoPos(flayer, --x, INPUTLINE); |
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inpdata->inp.pos--; |
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}
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else if (ch == '\005' || (unsigned char)ch == 0205) /* CTRL-E */ |
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{
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LGotoPos(flayer, x += inpdata->inp.len - inpdata->inp.pos, INPUTLINE); |
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inpdata->inp.pos = inpdata->inp.len; |
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}
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else if ((ch == '\006' || (unsigned char)ch == 0206) && inpdata->inp.pos < inpdata->inp.len) /* CTRL-F */ |
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{
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LGotoPos(flayer, ++x, INPUTLINE); |
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inpdata->inp.pos++; |
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}
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else if (ch == '\020' || (unsigned char)ch == 0220) /* CTRL-P */ |
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{
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struct mchar mc; |
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mc = mchar_so; |
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if (inpdata->inp.len && !(inpdata->inpmode & INP_NOECHO)) |
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LClearArea(flayer, inpdata->inpstringlen, INPUTLINE, inpdata->inpstringlen + inpdata->inp.len - 1, INPUTLINE, 0, 0); |
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inpdata->inp = inphist; /* structure copy */ |
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if (inpdata->inp.len > inpdata->inpmaxlen) |
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inpdata->inp.len = inpdata->inpmaxlen; |
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if (inpdata->inp.pos > inpdata->inp.len) |
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inpdata->inp.pos = inpdata->inp.len; |
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x = inpdata->inpstringlen; |
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p = inpdata->inp.buf; |
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if (!(inpdata->inpmode & INP_NOECHO)) |
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{
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while (p < inpdata->inp.buf+inpdata->inp.len) |
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{
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mc.image = *p++; |
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LPutChar(flayer, &mc, x++, INPUTLINE); |
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}
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}
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x = inpdata->inpstringlen + inpdata->inp.pos; |
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LGotoPos(flayer, x, INPUTLINE); |
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}
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else if (ch == '\004' || ch == '\003' || ch == '\007' || ch == '\033' || |
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ch == '\000' || ch == '\n' || ch == '\r') |
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{
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if (ch != '\004' && ch != '\n' && ch != '\r') |
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inpdata->inp.len = 0; |
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inpdata->inp.buf[inpdata->inp.len] = 0; |
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if (inpdata->inp.len && inpdata->inpmode == 0) |
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inphist = inpdata->inp; /* structure copy */ |
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flayer->l_data = 0; |
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InpAbort(); /* redisplays... */ |
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*ppbuf = pbuf; |
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*plen = len; |
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display = inpdisplay; |
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if ((inpdata->inpmode & INP_RAW) == 0) |
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(*inpdata->inpfinfunc)(inpdata->inp.buf, inpdata->inp.len, inpdata->priv); |
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else
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(*inpdata->inpfinfunc)(pbuf - 1, 0, inpdata->priv); |
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free((char *)inpdata); |
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return; |
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}
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}
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if (!(inpdata->inpmode & INP_RAW)) |
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{
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flayer->l_x = inpdata->inpstringlen + (inpdata->inpmode & INP_NOECHO ? 0 : inpdata->inp.pos); |
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flayer->l_y = INPUTLINE; |
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}
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*ppbuf = pbuf; |
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*plen = len; |
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}
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338 |
static void |
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InpAbort() |
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340 |
{
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LAY_CALL_UP(LayRedisplayLine(INPUTLINE, 0, flayer->l_width - 1, 0)); |
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ExitOverlayPage(); |
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343 |
}
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344 |
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345 |
static void |
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InpRedisplayLine(y, xs, xe, isblank) |
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int y, xs, xe, isblank; |
|
348 |
{
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349 |
int q, r, s, l, v; |
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struct inpdata *inpdata; |
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inpdata = (struct inpdata *)flayer->l_data; |
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if (y != INPUTLINE) |
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{
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LAY_CALL_UP(LayRedisplayLine(y, xs, xe, isblank)); |
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return; |
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357 |
}
|
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inpdata->inp.buf[inpdata->inp.len] = 0; |
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359 |
q = xs; |
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360 |
v = xe - xs + 1; |
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s = 0; |
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362 |
r = inpdata->inpstringlen; |
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363 |
if (v > 0 && q < r) |
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{
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365 |
l = v; |
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if (l > r - q) |
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l = r - q; |
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368 |
LPutStr(flayer, inpdata->inpstring + q - s, l, &mchar_so, q, y); |
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369 |
q += l; |
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370 |
v -= l; |
|
371 |
}
|
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372 |
s = r; |
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373 |
r += inpdata->inp.len; |
|
374 |
if (!(inpdata->inpmode & INP_NOECHO) && v > 0 && q < r) |
|
375 |
{
|
|
376 |
l = v; |
|
377 |
if (l > r - q) |
|
378 |
l = r - q; |
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379 |
LPutStr(flayer, inpdata->inp.buf + q - s, l, &mchar_so, q, y); |
|
380 |
q += l; |
|
381 |
v -= l; |
|
382 |
}
|
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383 |
s = r; |
|
384 |
r = flayer->l_width; |
|
385 |
if (!isblank && v > 0 && q < r) |
|
386 |
{
|
|
387 |
l = v; |
|
388 |
if (l > r - q) |
|
389 |
l = r - q; |
|
390 |
LClearArea(flayer, q, y, q + l - 1, y, 0, 0); |
|
391 |
q += l; |
|
392 |
}
|
|
393 |
}
|
|
394 |
||
395 |
int
|
|
396 |
InInput() |
|
397 |
{
|
|
398 |
if (flayer && flayer->l_layfn == &InpLf) |
|
399 |
return 1; |
|
400 |
return 0; |
|
401 |
}
|
|
402 |