+
+/*
+ * 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);
+}
projects / unix-history / commitdiff