diff options
| author | Markus Armbruster <armbru@redhat.com> | 2020-12-11 18:11:47 +0100 |
|---|---|---|
| committer | Markus Armbruster <armbru@redhat.com> | 2020-12-19 10:39:16 +0100 |
| commit | 998da0b1581bfda6d6d0e82b9e42edfa1bf5cfe5 (patch) | |
| tree | 6b2046f40c846775fa91b1b205f61f0e277ddb15 /include/qapi | |
| parent | 91f54d92c752e392be4903c9ad2846b2cdd0398d (diff) | |
qobject: Factor JSON writer out of qobject_to_json()
We have two JSON writers written in C: qobject/qjson.c provides
qobject_to_json(), and migration/qjson.c provides a more low level
imperative interface. They don't share code. The latter tacitly
limits numbers to int64_t, and strings contents to characters that
don't need escaping.
Factor out qobject_to_json()'s JSON writer as qobject/json-writer.c.
Straightforward, except for numbers: since the writer is to be
independent of QObject, it can't use qnum_to_string(). Open-code it
instead. This is actually an improvement of sorts, because it
liberates qnum_to_string() from JSON's needs: its JSON-related FIXMEs
move to the JSON writer, where they belong.
The next commit will replace migration/qjson.c.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20201211171152.146877-16-armbru@redhat.com>
Diffstat (limited to 'include/qapi')
| -rw-r--r-- | include/qapi/qmp/json-writer.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/include/qapi/qmp/json-writer.h b/include/qapi/qmp/json-writer.h new file mode 100644 index 0000000000..708d129018 --- /dev/null +++ b/include/qapi/qmp/json-writer.h @@ -0,0 +1,37 @@ +/* + * JSON Writer + * + * Copyright (c) 2020 Red Hat Inc. + * + * Authors: + * Markus Armbruster <armbru@redhat.com> + * + * This work is licensed under the terms of the GNU LGPL, version 2.1 or later. + * See the COPYING.LIB file in the top-level directory. + * + */ + +#ifndef JSON_WRITER_H +#define JSON_WRITER_H + +typedef struct JSONWriter JSONWriter; + +JSONWriter *json_writer_new(bool pretty); +const char *json_writer_get(JSONWriter *); +GString *json_writer_get_and_free(JSONWriter *); +void json_writer_free(JSONWriter *); + +G_DEFINE_AUTOPTR_CLEANUP_FUNC(JSONWriter, json_writer_free) + +void json_writer_start_object(JSONWriter *, const char *name); +void json_writer_end_object(JSONWriter *); +void json_writer_start_array(JSONWriter *, const char *name); +void json_writer_end_array(JSONWriter *); +void json_writer_bool(JSONWriter *, const char *name, bool val); +void json_writer_null(JSONWriter *, const char *name); +void json_writer_int64(JSONWriter *, const char *name, int64_t val); +void json_writer_uint64(JSONWriter *, const char *name, uint64_t val); +void json_writer_double(JSONWriter *, const char *name, double val); +void json_writer_str(JSONWriter *, const char *name, const char *str); + +#endif |