[PATCH v4 06/18] Export three functions from diff.c

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

Use fill_metainfo to fill the line level diff meta data,
emit_line to print out a line and quote_two to quote
paths.

Signed-off-by: Bo Yang <struggleyb.nku@gmail.com>
---
 diff.c |    6 +++---
 diff.h |   17 +++++++++++++++++
 2 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/diff.c b/diff.c
index 17873f3..9efca95 100644
--- a/diff.c
+++ b/diff.c
@@ -144,7 +144,7 @@ int git_diff_basic_config(const char *var, const char *value, void *cb)
 	return git_color_default_config(var, value, cb);
 }
 
-static char *quote_two(const char *one, const char *two)
+char *quote_two(const char *one, const char *two)
 {
 	int need_one = quote_c_style(one, NULL, NULL, 1);
 	int need_two = quote_c_style(two, NULL, NULL, 1);
@@ -325,7 +325,7 @@ static void emit_line_0(struct diff_options *o, const char *set, const char *res
 		fputc('\n', file);
 }
 
-static void emit_line(struct diff_options *o, const char *set, const char *reset,
+void emit_line(struct diff_options *o, const char *set, const char *reset,
 		      const char *line, int len)
 {
 	emit_line_0(o, set, reset, line[0], line+1, len-1);
@@ -2564,7 +2564,7 @@ static int similarity_index(struct diff_filepair *p)
 	return p->score * 100 / MAX_SCORE;
 }
 
-static void fill_metainfo(struct strbuf *msg,
+void fill_metainfo(struct strbuf *msg,
 			  const char *name,
 			  const char *other,
 			  struct diff_filespec *one,
diff --git a/diff.h b/diff.h
index 063d10a..9676ab9 100644
--- a/diff.h
+++ b/diff.h
@@ -12,6 +12,7 @@ struct diff_queue_struct;
 struct strbuf;
 struct diff_filespec;
 struct userdiff_driver;
+struct diff_filepair;
 
 typedef void (*change_fn_t)(struct diff_options *options,
 		 unsigned old_mode, unsigned new_mode,
@@ -301,4 +302,20 @@ extern size_t fill_textconv(struct userdiff_driver *driver,
 
 extern struct userdiff_driver *get_textconv(struct diff_filespec *one);
 
+/* some output functions line.c need */
+extern void fill_metainfo(struct strbuf *msg,
+			  const char *name,
+			  const char *other,
+			  struct diff_filespec *one,
+			  struct diff_filespec *two,
+			  struct diff_options *o,
+			  struct diff_filepair *p,
+			  int *must_show_header,
+			  int use_color);
+
+extern void emit_line(struct diff_options *o, const char *set, const char *reset,
+		      const char *line, int len);
+
+extern char *quote_two(const char *one, const char *two);
+
 #endif /* DIFF_H */
-- 
1.7.2.20.g388bbb