[RFC iproute2-next 16/16] json: fix newline at end of array

[Stephen Hemminger]

The json print library was toggling pretty print at the end of
an array to workaround a bug in underlying json_writer.
Instead, just fix json_writer to pretty print array correctly.

Signed-off-by: Stephen Hemminger <step...@networkplumber.org>
---
 lib/json_print.c  | 2 --
 lib/json_writer.c | 5 +++++
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/lib/json_print.c b/lib/json_print.c
index e3da1bdfd5b0..b507b14ba27f 100644
--- a/lib/json_print.c
+++ b/lib/json_print.c
@@ -89,9 +89,7 @@ void open_json_array(enum output_type type, const char *str)
 void close_json_array(enum output_type type, const char *str)
 {
        if (_IS_JSON_CONTEXT(type)) {
-               jsonw_pretty(_jw, false);
                jsonw_end_array(_jw);
-               jsonw_pretty(_jw, true);
        } else if (_IS_FP_CONTEXT(type)) {
                printf("%s", str);
        }
diff --git a/lib/json_writer.c b/lib/json_writer.c
index f3eeaf7bc479..0d910dc068b5 100644
--- a/lib/json_writer.c
+++ b/lib/json_writer.c
@@ -180,10 +180,15 @@ void jsonw_end_object(json_writer_t *self)
 void jsonw_start_array(json_writer_t *self)
 {
        jsonw_begin(self, '[');
+       if (self->pretty)
+               putc(' ', self->out);
 }
 
 void jsonw_end_array(json_writer_t *self)
 {
+       if (self->pretty && self->sep)
+               putc(' ', self->out);
+       self->sep = '\0';
        jsonw_end(self, ']');
 }
 
-- 
2.15.1