mirror/json-c
1
0
Fork 0
mirror of https://github.com/json-c/json-c.git synced 2026-03-18 12:39:06 +08:00
Code Issues Packages Projects Releases Wiki Activity

Issue #486: append a missing ".0" to negative double values too.

Browse Source
This commit is contained in:
Eric Haszlakiewicz
2019-05-28 02:44:22 +00:00
parent 3e81b4abe3
commit 485f2a02c7
3 changed files with 13 additions and 3 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
json_object.c
View File

@@ -810,6 +810,7 @@ static int json_object_double_to_json_string_format(struct json_object* jso,
{
const char *std_format = "%.17g";
int format_drops_decimals = 0;
int looks_numeric = 0;
if (!format)
{
@@ -837,11 +838,15 @@ static int json_object_double_to_json_string_format(struct json_object* jso,
if (format == std_format || strstr(format, ".0f") == NULL)
format_drops_decimals = 1;
looks_numeric = /* Looks like *some* kind of number */
isdigit((unsigned char)buf[0]) ||
(size > 1 && buf[0] == '-' && isdigit((unsigned char)buf[1]));
if (size < (int)sizeof(buf) - 2 &&
isdigit((unsigned char)buf[0]) && /* Looks like *some* kind of number */
!p && /* Has no decimal point */
looks_numeric &&
!p && /* Has no decimal point */
strchr(buf, 'e') == NULL && /* Not scientific notation */
format_drops_decimals)
format_drops_decimals)
{
// Ensure it looks like a float, even if snprintf didn't,
// unless a custom format is set to omit the decimal.

4
tests/test_double_serializer.c
View File

@@ -74,4 +74,8 @@ int main()
printf("ERROR: json_c_set_serialization_double_format() failed");
json_object_put(obj);
obj = json_object_new_double(-12.0);
printf("obj(-12.0).to_string(default format)=%s\n", json_object_to_json_string(obj));
}

1
tests/test_double_serializer.expected
View File

@@ -16,3 +16,4 @@ obj(12.0).to_string(default format)=12.0
obj(12.0).to_string(%.0f)=12
obj(12.0).to_string(%.0g)=1e+01
obj(12.0).to_string(%.1g)=12.0
obj(-12.0).to_string(default format)=-12.0