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authorMarkus Armbruster2020-12-11 18:11:47 +0100
committerMarkus Armbruster2020-12-19 10:39:16 +0100
commit998da0b1581bfda6d6d0e82b9e42edfa1bf5cfe5 (patch)
tree6b2046f40c846775fa91b1b205f61f0e277ddb15 /qobject/qnum.c
parentqobject: Factor quoted_str() out of to_json() (diff)
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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 'qobject/qnum.c')
-rw-r--r--qobject/qnum.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/qobject/qnum.c b/qobject/qnum.c
index 35ba41e61c..5dd66938dd 100644
--- a/qobject/qnum.c
+++ b/qobject/qnum.c
@@ -168,11 +168,6 @@ char *qnum_to_string(QNum *qn)
case QNUM_U64:
return g_strdup_printf("%" PRIu64, qn->u.u64);
case QNUM_DOUBLE:
- /* FIXME: g_strdup_printf() is locale dependent; but JSON requires
- * numbers to be formatted as if in the C locale. Dependence
- * on C locale is a pervasive issue in QEMU. */
- /* FIXME: This risks printing Inf or NaN, which are not valid
- * JSON values. */
/* 17 digits suffice for IEEE double */
return g_strdup_printf("%.17g", qn->u.dbl);
}