diff.c: introduce emit_diff_symbol

diff --git a/diff.c b/diff.c
index 77ef56a6e443537d84f2122f7b3a5ae8177b995a..4637368d59c75e1013068927cc1e5e4243347478 100644 (file)
--- a/diff.c
+++ b/diff.c
@@ -560,6 +560,24 @@ 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) &&
@@ -4828,9 +4846,7 @@ 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);