Re: [libvirt] [PATCHv2 05/12] Switch from yajl to Jansson

Yajl has not seen much activity upstream recently. Switch to using Jansson >= 2.7. All the platforms we target on https://libvirt.org/platforms.html have a version >= 2.7 listed on the sites below: https://repology.org/metapackage/jansson/versions https://build.opensuse.org/package/show/devel:libraries:c_c++/libjansson Implement virJSONValue{From,To}String using Jansson, delete the yajl code (and the related virJSONParser structure) and report an error if someone explicitly specifies --with-yajl. Also adjust the test data to account for Jansson's different whitespace usage for empty arrays and tune up the specfile to keep 'make rpm' working when bisecting. Signed-off-by: Ján Tomko <jtomko(a)redhat.com&gt; --- src/util/virjson.c | 223 +++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 223 insertions(+) diff --git a/src/util/virjson.c b/src/util/virjson.c index 92a15b28a1..cb38c35522 100644 --- a/src/util/virjson.c +++ b/src/util/virjson.c @@ -2011,6 +2011,229 @@ virJSONValueToString(virJSONValuePtr object, } +#elif WITH_JANSSON +# include <jansson.h> + +static virJSONValuePtr +virJSONValueFromJansson(json_t *json) +{ + virJSONValuePtr ret = NULL; + const char *key; + json_t *cur; + size_t i; + + switch (json_typeof(json)) { + case JSON_OBJECT: + ret = virJSONValueNewObject(); + if (!ret) + goto error; + + json_object_foreach(json, key, cur) { + virJSONValuePtr val = virJSONValueFromJansson(cur); + if (!val) + goto error; + + if (virJSONValueObjectAppend(ret, key, val) < 0) { + virJSONValueFree(val); + goto error; + } + } + + break; + + case JSON_ARRAY: + ret = virJSONValueNewArray(); + if (!ret) + goto error; + + json_array_foreach(json, i, cur) { + virJSONValuePtr val = virJSONValueFromJansson(cur); + if (!val) + goto error; + + if (virJSONValueArrayAppend(ret, val) < 0) { + virJSONValueFree(val); + goto error; + } + } + break; + + case JSON_STRING: + ret = virJSONValueNewStringLen(json_string_value(json), + json_string_length(json)); + break; + + case JSON_INTEGER: + ret = virJSONValueNewNumberLong(json_integer_value(json)); + break; + + case JSON_REAL: + ret = virJSONValueNewNumberDouble(json_real_value(json)); + break; + + case JSON_TRUE: + case JSON_FALSE: + ret = virJSONValueNewBoolean(json_boolean_value(json)); + break; + + case JSON_NULL: + ret = virJSONValueNewNull(); + break;

+ } + + return ret; + + error: + virJSONValueFree(ret); + return NULL; +} + +virJSONValuePtr +virJSONValueFromString(const char *jsonstring) +{ + virJSONValuePtr ret = NULL; + json_t *json; + json_error_t error; + size_t flags = JSON_REJECT_DUPLICATES | + JSON_DECODE_ANY; + + if (!(json = json_loads(jsonstring, flags, &error))) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("failed to parse JSON %d:%d: %s"), + error.line, error.column, error.text); + return NULL; + } + + ret = virJSONValueFromJansson(json); + json_decref(json); + return ret; +} + + +static json_t * +virJSONValueToJansson(virJSONValuePtr object) +{ + json_error_t error;

+ json_t *ret = NULL; + size_t i; + + switch (object->type) { + case VIR_JSON_TYPE_OBJECT: + ret = json_object(); + if (!ret) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("failed to create JSON object: %s"), + error.text);

+ goto error; + }

+ } + if (!ret) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("error creating JSON value: %s"), + error.text); + } + return ret; + + error: + json_decref(ret); + return NULL; +} + + +char * +virJSONValueToString(virJSONValuePtr object, + bool pretty) +{ + size_t flags = JSON_ENCODE_ANY; + json_t *json; + json_error_t error; + char *str = NULL; + + if (pretty) + flags |= JSON_INDENT(2); + else + flags |= JSON_COMPACT; + + json = virJSONValueToJansson(object); + if (!json) + return NULL; + + str = json_dumps(json, flags); + if (!str) { + virReportError(VIR_ERR_INTERNAL_ERROR, + _("failed to format JSON %d:%d: %s"), + error.line, error.column, error.text);

+ } + json_decref(json); + return str;