Refactor view->line reallocation

diff --git a/tig.c b/tig.c
index decc434..22943f0 100644 (file)
--- a/tig.c
+++ b/tig.c
@@ -862,6 +862,7 @@ struct view {
        /* Buffering */
        unsigned long lines;    /* Total number of lines */
        struct line *line;      /* Line index */
+       unsigned long line_size;/* Total number of allocated lines */
        unsigned int digits;    /* Number of digits in the lines member. */
 
        /* Loading */
@@ -1309,12 +1310,24 @@ begin_update(struct view *view)
        return TRUE;
 }
 
+static struct line *
+realloc_lines(struct view *view, size_t line_size)
+{
+       struct line *tmp = realloc(view->line, sizeof(*view->line) * line_size);
+
+       if (!tmp)
+               return NULL;
+
+       view->line = tmp;
+       view->line_size = line_size;
+       return view->line;
+}
+
 static bool
 update_view(struct view *view)
 {
        char buffer[BUFSIZ];
        char *line;
-       struct line *tmp;
        /* The number of lines to read. If too low it will cause too much
         * redrawing (and possible flickering), if too high responsiveness
         * will suffer. */
@@ -1328,12 +1341,9 @@ update_view(struct view *view)
        if (view->offset + view->height >= view->lines)
                redraw_from = view->lines - view->offset;
 
-       tmp = realloc(view->line, sizeof(*view->line) * (view->lines + lines));
-       if (!tmp)
+       if (!realloc_lines(view, view->lines + lines))
                goto alloc_error;
 
-       view->line = tmp;
-
        while ((line = fgets(buffer, sizeof(buffer), view->pipe))) {
                int linelen = strlen(line);