[PATCH 04/26] diff.c: introduce emit_diff_symbol

[Stefan Beller]

Signed-off-by: Stefan Beller <sbel...@google.com>
---
 diff.c | 22 +++++++++++++++++++---
 1 file changed, 19 insertions(+), 3 deletions(-)

diff --git a/diff.c b/diff.c
index 2f9722b382..89466018e5 100644
--- a/diff.c
+++ b/diff.c
@@ -559,6 +559,24 @@ static void emit_line(struct diff_options *o, const char 
*set, const char *reset
        emit_line_0(o, set, reset, line[0], line+1, len-1);
 }
 
+enum diff_symbol {
+       DIFF_SYMBOL_SEPARATOR,
+};
+
+static void emit_diff_symbol(struct diff_options *o, enum diff_symbol s,
+                            const char *line, int len)
+{
+       switch (s) {
+       case DIFF_SYMBOL_SEPARATOR:
+               fprintf(o->file, "%s%c",
+                       diff_line_prefix(o),
+                       o->line_termination);
+               break;
+       default:
+               die("BUG: unknown diff symbol");
+       }
+}
+
 static int new_blank_line_at_eof(struct emit_callback *ecbdata, const char 
*line, int len)
 {
        if (!((ecbdata->ws_rule & WS_BLANK_AT_EOF) &&
@@ -4833,9 +4851,7 @@ void diff_flush(struct diff_options *options)
 
        if (output_format & DIFF_FORMAT_PATCH) {
                if (separator) {
-                       fprintf(options->file, "%s%c",
-                               diff_line_prefix(options),
-                               options->line_termination);
+                       emit_diff_symbol(options, DIFF_SYMBOL_SEPARATOR, NULL, 
0);
                        if (options->stat_sep) {
                                /* attach patch instead of inline */
                                fputs(options->stat_sep, options->file);
-- 
2.12.2.575.gb14f27f917