blame: factor out get_next_line()

Move the code for finding the start of the next line into a helper
function in order to reduce duplication.

Signed-off-by: Rene Scharfe <l.s.r@web.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>

diff --git a/builtin/blame.c b/builtin/blame.c
index 88cb799..f685b38 100644 (file)
--- a/builtin/blame.c
+++ b/builtin/blame.c
@@ -1741,6 +1741,12 @@ static void output(struct scoreboard *sb, int option)
        }
 }
 
+static const char *get_next_line(const char *start, const char *end)
+{
+       const char *nl = memchr(start, '\n', end - start);
+       return nl ? nl + 1 : NULL;
+}
+
 /*
  * To allow quick access to the contents of nth line in the
  * final image, prepare an index in the scoreboard.
@@ -1754,15 +1760,8 @@ static int prepare_lines(struct scoreboard *sb)
        int *lineno;
        int num = 0, incomplete = 0;
 
-       for (p = buf;;) {
-               p = memchr(p, '\n', end - p);
-               if (p) {
-                       p++;
-                       num++;
-                       continue;
-               }
-               break;
-       }
+       for (p = get_next_line(buf, end); p; p = get_next_line(p, end))
+               num++;
 
        if (len && end[-1] != '\n')
                incomplete++; /* incomplete line at the end */
@@ -1771,15 +1770,8 @@ static int prepare_lines(struct scoreboard *sb)
        lineno = sb->lineno;
 
        *lineno++ = 0;
-       for (p = buf;;) {
-               p = memchr(p, '\n', end - p);
-               if (p) {
-                       p++;
-                       *lineno++ = p - buf;
-                       continue;
-               }
-               break;
-       }
+       for (p = get_next_line(buf, end); p; p = get_next_line(p, end))
+               *lineno++ = p - buf;
 
        if (incomplete)
                *lineno++ = len;