[WIP PATCH 19/22] Make graph_next_line external to other part of git

[Bo Yang <struggleyb.nku@gmail.com>]

We will use it in line level log output.

Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
---
 graph.c |   14 +-------------
 graph.h |   10 ++++++++++
 2 files changed, 11 insertions(+), 13 deletions(-)

diff --git a/graph.c b/graph.c
index ac7c605..824e055 100644
--- a/graph.c
+++ b/graph.c
@@ -4,21 +4,9 @@
 #include "graph.h"
 #include "diff.h"
 #include "revision.h"
-
 /* Internal API */
 
 /*
- * Output the next line for a graph.
- * This formats the next graph line into the specified strbuf.  It is not
- * terminated with a newline.
- *
- * Returns 1 if the line includes the current commit, and 0 otherwise.
- * graph_next_line() will return 1 exactly once for each time
- * graph_update() is called.
- */
-static int graph_next_line(struct git_graph *graph, struct strbuf *sb);
-
-/*
  * Output a padding line in the graph.
  * This is similar to graph_next_line().  However, it is guaranteed to
  * never print the current commit line.  Instead, if the commit line is
@@ -1143,7 +1131,7 @@ static void graph_output_collapsing_line(struct git_graph *graph, struct strbuf
 		graph_update_state(graph, GRAPH_PADDING);
 }
 
-static int graph_next_line(struct git_graph *graph, struct strbuf *sb)
+int graph_next_line(struct git_graph *graph, struct strbuf *sb)
 {
 	switch (graph->state) {
 	case GRAPH_PADDING:
diff --git a/graph.h b/graph.h
index b82ae87..5b3f059 100644
--- a/graph.h
+++ b/graph.h
@@ -32,6 +32,16 @@ void graph_update(struct git_graph *graph, struct commit *commit);
  */
 int graph_is_commit_finished(struct git_graph const *graph);
 
+/*
+ * Output the next line for a graph.
+ * This formats the next graph line into the specified strbuf.  It is not
+ * terminated with a newline.
+ *
+ * Returns 1 if the line includes the current commit, and 0 otherwise.
+ * graph_next_line() will return 1 exactly once for each time
+ * graph_update() is called.
+ */
+int graph_next_line(struct git_graph *graph, struct strbuf *sb);
 
 /*
  * graph_show_*: helper functions for printing to stdout
-- 
1.7.0.2.273.gc2413.dirty