109 lines
4.0 KiB
Diff
109 lines
4.0 KiB
Diff
From: Jan-Philipp Litza <janphilipp@litza.de>
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Date: Fri, 6 May 2016 16:44:29 +0200
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Subject: libjson-c: Add support for custom format strings for doubles
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diff --git a/package/libs/libjson-c/patches/002-custom-format-string.patch b/package/libs/libjson-c/patches/002-custom-format-string.patch
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new file mode 100644
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index 0000000000000000000000000000000000000000..2f454c560ff78c1edd4654b9651f0e6299bd5e6f
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--- /dev/null
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+++ b/package/libs/libjson-c/patches/002-custom-format-string.patch
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@@ -0,0 +1,98 @@
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+From 21dc5dc92bd56f5f4dc2c90b9ea6bf1e1407714e Mon Sep 17 00:00:00 2001
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+From: Jan-Philipp Litza <janphilipp@litza.de>
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+Date: Fri, 6 May 2016 16:12:44 +0200
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+Subject: [PATCH] Export json_object_double_to_json_string() and use custom
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+ format string
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+BCC: janphilipp@litza.de
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+
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+---
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+ json_object.c | 12 ++++++------
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+ json_object.h | 28 ++++++++++++++++++++++++++++
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+ 2 files changed, 34 insertions(+), 6 deletions(-)
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+
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+diff --git a/json_object.c b/json_object.c
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+index 7d60884..46701e7 100644
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+--- a/json_object.c
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++++ b/json_object.c
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+@@ -55,7 +55,6 @@ static struct json_object* json_object_new(enum json_type o_type);
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+ static json_object_to_json_string_fn json_object_object_to_json_string;
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+ static json_object_to_json_string_fn json_object_boolean_to_json_string;
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+ static json_object_to_json_string_fn json_object_int_to_json_string;
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+-static json_object_to_json_string_fn json_object_double_to_json_string;
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+ static json_object_to_json_string_fn json_object_string_to_json_string;
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+ static json_object_to_json_string_fn json_object_array_to_json_string;
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+
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+@@ -644,10 +643,10 @@ int64_t json_object_get_int64(const struct json_object *jso)
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+
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+ /* json_object_double */
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+
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+-static int json_object_double_to_json_string(struct json_object* jso,
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+- struct printbuf *pb,
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+- int level,
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+- int flags)
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++int json_object_double_to_json_string(struct json_object* jso,
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++ struct printbuf *pb,
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++ int level,
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++ int flags)
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+ {
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+ char buf[128], *p, *q;
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+ int size;
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+@@ -663,7 +662,8 @@ static int json_object_double_to_json_string(struct json_object* jso,
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+ else
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+ size = snprintf(buf, sizeof(buf), "-Infinity");
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+ else
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+- size = snprintf(buf, sizeof(buf), "%.17g", jso->o.c_double);
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++ size = snprintf(buf, sizeof(buf),
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++ jso->_userdata ? (const char*) jso->_userdata : "%.17g", jso->o.c_double);
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+
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+ p = strchr(buf, ',');
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+ if (p) {
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+diff --git a/json_object.h b/json_object.h
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+index 2bce454..a89de44 100644
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+--- a/json_object.h
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++++ b/json_object.h
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+@@ -614,6 +614,9 @@ extern int64_t json_object_get_int64(const struct json_object *obj);
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+ /* double type methods */
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+
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+ /** Create a new empty json_object of type json_type_double
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++ *
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++ * @see json_object_double_to_json_string() for how to set a custom format string.
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++ *
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+ * @param d the double
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+ * @returns a json_object of type json_type_double
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+ */
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+@@ -642,6 +645,31 @@ extern struct json_object* json_object_new_double(double d);
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+ */
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+ extern struct json_object* json_object_new_double_s(double d, const char *ds);
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+
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++
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++/** Serialize a json_object of type json_type_double to a string.
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++ *
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++ * This function isn't meant to be called directly. Instead, you can set a
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++ * custom format string for the serialization of this double using the
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++ * following call (where "%.17g" actually is the default):
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++ *
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++ * @code
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++ * jso = json_object_new_double(d);
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++ * json_object_set_serializer(jso, json_object_double_to_json_string,
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++ * "%.17g", NULL);
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++ * @endcode
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++ *
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++ * @see printf(3) man page for format strings
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++ *
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++ * @param jso The json_type_double object that is serialized.
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++ * @param pb The destination buffer.
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++ * @param level Ignored.
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++ * @param flags Ignored.
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++ */
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++extern int json_object_double_to_json_string(struct json_object* jso,
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++ struct printbuf *pb,
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++ int level,
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++ int flags);
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++
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+ /** Get the double floating point value of a json_object
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+ *
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+ * The type is coerced to a double if the passed object is not a double.
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+--
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+2.7.4
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+
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