lint

[unix-history] / usr / src / usr.bin / window / cmd7.c

/*
* Copyright (c) 1983, 1993
*      The Regents of the University of California.  All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Edward Wang at The University of California, Berkeley.
*
* %sccs.include.redist.c%
*/

#ifndef lint
static char sccsid[] = "@(#)cmd7.c      8.1 (Berkeley) %G%";
#endif /* not lint */

#include "defs.h"
#include "string.h"

/*
* Window size.
*/

c_size(w)
register struct ww *w;
{
       int col, row;

       if (!terse)
               wwputs("New window size (lower right corner): ", cmdwin);
       col = MIN(w->ww_w.r, wwncol) - 1;
       row = MIN(w->ww_w.b, wwnrow) - 1;
       wwadd(boxwin, framewin->ww_back);
       for (;;) {
               wwbox(boxwin, w->ww_w.t - 1, w->ww_w.l - 1,
                       row - w->ww_w.t + 3, col - w->ww_w.l + 3);
               wwsetcursor(row, col);
               while (wwpeekc() < 0)
                       wwiomux();
               switch (getpos(&row, &col, w->ww_w.t, w->ww_w.l,
                       wwnrow - 1, wwncol - 1)) {
               case 3:
                       wwunbox(boxwin);
                       wwdelete(boxwin);
                       return;
               case 2:
                       wwunbox(boxwin);
                       break;
               case 1:
                       wwunbox(boxwin);
               case 0:
                       continue;
               }
               break;
       }
       wwdelete(boxwin);
       if (!terse)
               wwputc('\n', cmdwin);
       wwcurtowin(cmdwin);
       sizewin(w, row - w->ww_w.t + 1, col - w->ww_w.l + 1);
}

/*
* Yank and put
*/

struct yb {
       char *line;
       int length;
       struct yb *link;
};
struct yb *yb_head, *yb_tail;

c_yank()
{
       struct ww *w = selwin;
       int col1, row1;
       int col2, row2;
       int r, c;

       if (!terse)
               wwputs("Yank starting position: ", cmdwin);
       wwcursor(w, 0);
       row1 = w->ww_cur.r;
       col1 = w->ww_cur.c;
       for (;;) {
               wwsetcursor(row1, col1);
               while (wwpeekc() < 0)
                       wwiomux();
               switch (getpos(&row1, &col1, w->ww_i.t, w->ww_i.l,
                              w->ww_i.b - 1, w->ww_i.r - 1)) {
               case 3:
                       goto out;
               case 2:
                       break;
               case 1:
               case 0:
                       continue;
               }
               break;
       }
       if (!terse)
               wwputs("\nYank ending position: ", cmdwin);
       row2 = row1;
       col2 = col1;
       for (;;) {
               wwsetcursor(row2, col2);
               while (wwpeekc() < 0)
                       wwiomux();
               r = row2;
               c = col2;
               switch (getpos(&row2, &col2, w->ww_i.t, w->ww_i.l,
                              w->ww_i.b - 1, w->ww_i.r - 1)) {
               case 3:
                       yank_highlight(row1, col1, r, c);
                       goto out;
               case 2:
                       break;
               case 1:
                       yank_highlight(row1, col1, r, c);
                       yank_highlight(row1, col1, row2, col2);
               case 0:
                       continue;
               }
               break;
       }
       if (row2 < row1 || row2 == row1 && col2 < col1) {
               r = row1;
               c = col1;
               row1 = row2;
               col1 = col2;
               row2 = r;
               col2 = c;
       }
       unyank();
       c = col1;
       for (r = row1; r < row2; r++) {
               yank_line(r, c, w->ww_b.r);
               c = w->ww_b.l;
       }
       yank_line(r, c, col2);
       yank_highlight(row1, col1, row2, col2);
       if (!terse)
               wwputc('\n', cmdwin);
out:
       wwcursor(w, 1);
}

yank_highlight(row1, col1, row2, col2)
{
       struct ww *w = selwin;
       int r, c;

       if ((wwavailmodes & WWM_REV) == 0)
               return;
       if (row2 < row1 || row2 == row1 && col2 < col1) {
               r = row1;
               c = col1;
               row1 = row2;
               col1 = col2;
               row2 = r;
               col2 = c;
       }
       c = col1;
       for (r = row1; r < row2; r++) {
               yank_highlight_line(r, c, w->ww_b.r);
               c = w->ww_b.l;
       }
       yank_highlight_line(r, c, col2);
}

yank_highlight_line(r, c, cend)
{
       struct ww *w = selwin;
       char *win;

       if (r < w->ww_i.t || r >= w->ww_i.b)
               return;
       if (c < w->ww_i.l)
               c = w->ww_i.l;
       if (cend >= w->ww_i.r)
               cend = w->ww_i.r;
       for (win = w->ww_win[r] + c; c < cend; c++, win++) {
               *win ^= WWM_REV;
               if (wwsmap[r][c] == w->ww_index) {
                       if (*win == 0)
                               w->ww_nvis[r]++;
                       else if (*win == WWM_REV)
                               w->ww_nvis[r]--;
                       wwns[r][c].c_m ^= WWM_REV;
                       wwtouched[r] |= WWU_TOUCHED;
               }
       }
}

unyank()
{
       struct yb *yp, *yq;

       for (yp = yb_head; yp; yp = yq) {
               yq = yp->link;
               str_free(yp->line);
               free((char *) yp);
       }
       yb_head = yb_tail = 0;
}

yank_line(r, c, cend)
{
       struct yb *yp;
       int nl = 0;
       int n;
       union ww_char *bp;
       char *cp;

       if (c == cend)
               return;
       if ((yp = (struct yb *) malloc(sizeof *yp)) == 0)
               return;
       yp->link = 0;
       nl = cend == selwin->ww_b.r;
       bp = selwin->ww_buf[r];
       for (cend--; cend >= c; cend--)
               if (bp[cend].c_c != ' ')
                       break;
       yp->length = n = cend - c + 1;
       if (nl)
               yp->length++;
       yp->line = str_alloc(yp->length + 1);
       for (bp += c, cp = yp->line; --n >= 0;)
               *cp++ = bp++->c_c;
       if (nl)
               *cp++ = '\n';
       *cp = 0;
       if (yb_head)
               yb_tail = yb_tail->link = yp;
       else
               yb_head = yb_tail = yp;
}

c_put()
{
       struct yb *yp;

       for (yp = yb_head; yp; yp = yp->link)
               (void) write(selwin->ww_pty, yp->line, yp->length);
}