From 096cbf2ea558c0f66ee7bdaa8316e85c3e55ee69 Mon Sep 17 00:00:00 2001
From: Nicholas Marriott <nicm@openbsd.org>
Date: Wed, 24 Jun 2009 22:04:18 +0000
Subject: [PATCH] Add a dedicated function to convert a line into a string and
 use it to simplify the search window function.

---
 grid-view.c | 12 ++++++++++++
 grid.c      | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 tmux.h      |  2 ++
 window.c    | 51 +++++++++++++++------------------------------------
 4 files changed, 75 insertions(+), 36 deletions(-)

diff --git a/grid-view.c b/grid-view.c
index f1224bf6..75dc686a 100644
--- a/grid-view.c
+++ b/grid-view.c
@@ -209,3 +209,15 @@ grid_view_delete_cells(struct grid *gd, u_int px, u_int py, u_int nx)
 
 	grid_move_cells(gd, px, px + nx, py, (sx - 1) - (px + nx));
 }
+
+/* Convert cells into a string. */
+char *
+grid_view_string_cells(struct grid *gd, u_int px, u_int py, u_int nx)
+{
+	GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
+
+	px = grid_view_x(gd, px);
+	py = grid_view_y(gd, py);
+
+	return (grid_string_cells(gd, px, py, nx));
+}
diff --git a/grid.c b/grid.c
index 71761afe..01bf7719 100644
--- a/grid.c
+++ b/grid.c
@@ -493,3 +493,49 @@ grid_move_cells(struct grid *gd, u_int dx, u_int px, u_int py, u_int nx)
 		grid_put_cell(gd, xx, py, &grid_default_cell);
 	}
 }
+
+/* Convert cells into a string. */
+char *
+grid_string_cells(struct grid *gd, u_int px, u_int py, u_int nx)
+{
+ 	const struct grid_cell	*gc;
+ 	const struct grid_utf8	*gu;
+	char			*buf;
+	size_t			 len, off;
+	u_int			 xx;
+
+	GRID_DEBUG(gd, "px=%u, py=%u, nx=%u", px, py, nx);
+
+	len = 128;
+	buf = xmalloc(len);
+	off = 0;
+
+	for (xx = px; xx < px + nx; xx++) {
+		gc = grid_peek_cell(gd, xx, py);
+		if (gc->flags & GRID_FLAG_PADDING)
+			continue;
+
+		if (gc->flags & GRID_FLAG_UTF8) {
+			while (len < off + UTF8_SIZE + 1) {
+				buf = xrealloc(buf, 2, len);
+				len *= 2;
+			}
+
+			gu = grid_peek_utf8(gd, xx, py);
+			memcpy(buf + off, gu->data, UTF8_SIZE);
+			off += UTF8_SIZE;
+			while (off > 0 && ((u_char) buf[off]) == 0xff)
+				off--;
+		} else {
+			while (len < off + 2) {
+				buf = xrealloc(buf, 2, len);
+				len *= 2;
+			}
+
+			buf[off++] = gc->data;
+		}
+	}
+
+	buf[off] = '\0';
+	return (buf);
+}
diff --git a/tmux.h b/tmux.h
index 2052b498..0bab2804 100644
--- a/tmux.h
+++ b/tmux.h
@@ -1327,6 +1327,7 @@ void	 grid_clear_lines(struct grid *, u_int, u_int);
 void	 grid_move_lines(struct grid *, u_int, u_int, u_int);
 void	 grid_clear_cells(struct grid *, u_int, u_int, u_int);
 void	 grid_move_cells(struct grid *, u_int, u_int, u_int, u_int);
+char	*grid_string_cells(struct grid *, u_int, u_int, u_int);
 
 /* grid-view.c */
 const struct grid_cell *grid_view_peek_cell(struct grid *, u_int, u_int);
@@ -1348,6 +1349,7 @@ void	 grid_view_delete_lines_region(
     	     struct grid *, u_int, u_int, u_int, u_int);
 void	 grid_view_insert_cells(struct grid *, u_int, u_int, u_int);
 void	 grid_view_delete_cells(struct grid *, u_int, u_int, u_int);
+char	*grid_view_string_cells(struct grid *, u_int, u_int, u_int);
 
 /* screen-write.c */
 void	 screen_write_start(
diff --git a/window.c b/window.c
index b3dcd0f1..91606f53 100644
--- a/window.c
+++ b/window.c
@@ -590,42 +590,21 @@ window_pane_mouse(
 char *
 window_pane_search(struct window_pane *wp, const char *searchstr)
 {
-	const struct grid_cell	*gc;
-	const struct grid_utf8	*gu;
-	char			*buf, *s;
-	size_t	 		 off;
-	u_int	 		 i, j, k;
+	struct screen	*s = &wp->base;
+	char		*line, *ptr;
+	u_int	 	 i;
 
-	buf = xmalloc(1);
-
-	for (j = 0; j < screen_size_y(&wp->base); j++) {
-		off = 0;
-		for (i = 0; i < screen_size_x(&wp->base); i++) {
-			gc = grid_view_peek_cell(wp->base.grid, i, j);
-			if (gc->flags & GRID_FLAG_UTF8) {
-				gu = grid_view_peek_utf8(wp->base.grid, i, j);
-				buf = xrealloc(buf, 1, off + 8);
-				for (k = 0; k < UTF8_SIZE; k++) {
-					if (gu->data[k] == 0xff)
-						break;
-					buf[off++] = gu->data[k];
-				}
-			} else {
-				buf = xrealloc(buf, 1, off + 1);
-				buf[off++] = gc->data;
-			}
-		}
-		while (off > 0 && buf[off - 1] == ' ')
-			off--;
-		buf[off] = '\0';
-
-		if ((s = strstr(buf, searchstr)) != NULL) {
-			s = section_string(buf, off, s - buf, 40);
-			xfree(buf);
-			return (s);
-		}
+	ptr = NULL;
+	for (i = 0; i < screen_size_y(s); i++) {
+		line = grid_view_string_cells(s->grid, 0, i, screen_size_x(s));
+		log_debug("XXX %s", line);
+		if ((ptr = strstr(line, searchstr)) != NULL)
+			break;		
+		xfree(line);
 	}
-
-	xfree(buf);
-	return (NULL);
+	if (ptr != NULL) {
+		ptr = section_string(line, strlen(ptr), ptr - line, 40);
+		xfree(line);
+	}
+	return (ptr);
 }