X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?p=visor;a=blobdiff_plain;f=libvisor%2Fsrc%2Fvisor.c;h=86d508b202909556500b6738b0e539b67f78599f;hp=12b5a02ab0b730b54a80395d7eb98763269ea3a2;hb=1c7c43c39b2b6f9224bcd39e3a24b8e91ada2cae;hpb=94c867869ece77f27cf3c8b637d44e13d86f5b88

diff --git a/libvisor/src/visor.c b/libvisor/src/visor.c
index 12b5a02..86d508b 100644
--- a/libvisor/src/visor.c
+++ b/libvisor/src/visor.c
@@ -33,6 +33,21 @@ along with this program.  If not, see <https://www.gnu.org/licenses/>.
 #define vi_write	vi->fop.write
 #define vi_seek		vi->fop.seek
 
+#define vi_clear()			vi->tty.clear(vi->tty_cls)
+#define vi_clear_line()		vi->tty.clear_line(vi->tty_cls)
+#define vi_clear_line_at(y)	vi->tty.clear_line_at(y, vi->tty_cls)
+#define vi_setcursor(x, y)	vi->tty.setcursor(x, y, vi->tty_cls)
+#define vi_putchar(c)		vi->tty.putchar(c, vi->tty_cls)
+#define vi_putchar_at(x, y, c)	v->tty.putchar_at(x, y, c, vi->tty_cls)
+#define vi_scroll(n)		vi->tty.scroll(n, vi->tty_cls)
+#define vi_del_back()		vi->tty.del_back(vi->tty_cls)
+#define vi_del_fwd()		vi->tty.del_fwd(vi->tty_cls)
+#define vi_status(s)		vi->tty.status(s, vi->tty_cls)
+#define vi_flush()			vi->tty.flush(vi->tty_cls)
+
+static int remove_buf(struct visor *vi, struct vi_buffer *vb);
+static int add_span(struct vi_buffer *vb, vi_addr at, int src, vi_addr start, unsigned long size);
+
 #ifdef HAVE_LIBC
 static const struct vi_alloc stdalloc = { malloc, free, realloc };
 #endif
@@ -53,6 +68,9 @@ struct visor *vi_create(struct vi_alloc *mm)
 	memset(vi, 0, sizeof *vi);
 	vi->mm = *mm;
 
+	vi->term_width = 80;
+	vi->term_height = 24;
+
 	return vi;
 }
 
@@ -74,6 +92,67 @@ void vi_set_ttyops(struct visor *vi, struct vi_ttyops *tty)
 	vi->tty = *tty;
 }
 
+void vi_term_size(struct visor *vi, int xsz, int ysz)
+{
+	vi->term_width = xsz;
+	vi->term_height = ysz;
+}
+
+void vi_redraw(struct visor *vi)
+{
+	int i, col, cur_x = 0, cur_y = 0;
+	char c;
+	struct vi_buffer *vb;
+	struct vi_span *sp, *spans_end;
+	const char *tptr, *tend;
+	vi_addr spoffs, addr;
+
+	vb = vi->buflist;
+	if(!(sp = vi_buf_find_span(vb, vb->view_start, &spoffs))) {
+		sp = vb->spans;
+		spoffs = 0;
+	}
+	spans_end = vb->spans + vb->num_spans;
+
+	tptr = vi_buf_span_text(vb, sp);
+	tend = tptr + sp->size;
+	tptr += spoffs;
+
+	vi_clear();
+
+	addr = vb->view_start;
+	for(i=0; i<vi->term_height; i++) {
+		vi_setcursor(0, i);
+		col = -vb->view_xscroll - 1;
+		while(++col < vi->term_width && (c = (addr++, *tptr++)) != '\n') {
+			if(addr == vb->cursor) {
+				cur_x = col;
+				cur_y = i;
+			}
+
+			if(col >= 0) {
+				vi_putchar(c);
+			}
+			if(tptr >= tend) {
+				if(++sp >= spans_end) {
+					goto end;
+				}
+				tptr = vi_buf_span_text(vb, sp);
+				tend = tptr + sp->size;
+			}
+		}
+	}
+end:
+
+	while(i < vi->term_height) {
+		vi_setcursor(0, i++);
+		vi_putchar('~');
+	}
+
+	vi_setcursor(cur_x, cur_y);
+	vi_flush();
+}
+
 struct vi_buffer *vi_new_buf(struct visor *vi, const char *path)
 {
 	struct vi_buffer *nb;