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util: json: make value object creator universal by supporting adding
To allow constructing of value objects stepwise explode the helper into separate steps and allow appending into existing value objects.
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d793aeedf2
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@ -1534,6 +1534,8 @@ virJSONValueNewNumberUlong;
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virJSONValueNewObject;
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virJSONValueNewString;
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virJSONValueNewStringLen;
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virJSONValueObjectAdd;
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virJSONValueObjectAddVArgs;
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virJSONValueObjectAppend;
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virJSONValueObjectAppendBoolean;
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virJSONValueObjectAppendNull;
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@ -64,12 +64,11 @@ struct _virJSONParser {
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/**
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* virJSONValueObjectCreateVArgs:
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* @obj: returns the created JSON object
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* @...: a key-value argument pairs, terminated by NULL
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* virJSONValueObjectAddVArgs:
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* @obj: JSON object to add the values to
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* @args: a key-value argument pairs, terminated by NULL
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*
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* Creates a JSON value object filled with key-value pairs supplied as variable
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* argument list.
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* Adds the key-value pairs supplied as variable argument list to @obj.
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*
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* Keys look like s:name the first letter is a type code:
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* Explanation of type codes:
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@ -104,22 +103,17 @@ struct _virJSONParser {
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* The value corresponds to the selected type.
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*
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* Returns -1 on error. 1 on success, if at least one key:pair was valid 0
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* in case of no error but nothing was filled (@obj will be NULL).
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* in case of no error but nothing was filled.
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*/
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int
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virJSONValueObjectCreateVArgs(virJSONValuePtr *obj, va_list args)
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virJSONValueObjectAddVArgs(virJSONValuePtr obj,
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va_list args)
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{
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virJSONValuePtr jargs = NULL;
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char type;
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char *key;
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int ret = -1;
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int rc;
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*obj = NULL;
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if (!(jargs = virJSONValueNewObject()))
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goto cleanup;
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while ((key = va_arg(args, char *)) != NULL) {
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if (strlen(key) < 3) {
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@ -146,7 +140,7 @@ virJSONValueObjectCreateVArgs(virJSONValuePtr *obj, va_list args)
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key);
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goto cleanup;
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}
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rc = virJSONValueObjectAppendString(jargs, key, val);
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rc = virJSONValueObjectAppendString(obj, key, val);
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} break;
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case 'z':
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@ -165,7 +159,7 @@ virJSONValueObjectCreateVArgs(virJSONValuePtr *obj, va_list args)
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if (!val && (type == 'z' || type == 'y'))
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continue;
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rc = virJSONValueObjectAppendNumberInt(jargs, key, val);
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rc = virJSONValueObjectAppendNumberInt(obj, key, val);
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} break;
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case 'p':
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@ -175,7 +169,7 @@ virJSONValueObjectCreateVArgs(virJSONValuePtr *obj, va_list args)
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if (!val && type == 'p')
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continue;
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rc = virJSONValueObjectAppendNumberUint(jargs, key, val);
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rc = virJSONValueObjectAppendNumberUint(obj, key, val);
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} break;
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case 'Z':
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@ -194,7 +188,7 @@ virJSONValueObjectCreateVArgs(virJSONValuePtr *obj, va_list args)
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if (!val && (type == 'Z' || type == 'Y'))
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continue;
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rc = virJSONValueObjectAppendNumberLong(jargs, key, val);
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rc = virJSONValueObjectAppendNumberLong(obj, key, val);
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} break;
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case 'P':
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@ -209,12 +203,12 @@ virJSONValueObjectCreateVArgs(virJSONValuePtr *obj, va_list args)
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if (!val && type == 'P')
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continue;
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rc = virJSONValueObjectAppendNumberLong(jargs, key, val);
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rc = virJSONValueObjectAppendNumberLong(obj, key, val);
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} break;
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case 'd': {
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double val = va_arg(args, double);
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rc = virJSONValueObjectAppendNumberDouble(jargs, key, val);
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rc = virJSONValueObjectAppendNumberDouble(obj, key, val);
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} break;
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case 'B':
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@ -224,11 +218,11 @@ virJSONValueObjectCreateVArgs(virJSONValuePtr *obj, va_list args)
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if (!val && type == 'B')
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continue;
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rc = virJSONValueObjectAppendBoolean(jargs, key, val);
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rc = virJSONValueObjectAppendBoolean(obj, key, val);
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} break;
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case 'n': {
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rc = virJSONValueObjectAppendNull(jargs, key);
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rc = virJSONValueObjectAppendNull(obj, key);
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} break;
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case 'A':
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@ -245,7 +239,7 @@ virJSONValueObjectCreateVArgs(virJSONValuePtr *obj, va_list args)
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goto cleanup;
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}
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rc = virJSONValueObjectAppend(jargs, key, val);
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rc = virJSONValueObjectAppend(obj, key, val);
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} break;
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default:
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@ -259,17 +253,47 @@ virJSONValueObjectCreateVArgs(virJSONValuePtr *obj, va_list args)
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}
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/* verify that we added at least one key-value pair */
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if (virJSONValueObjectKeysNumber(jargs) == 0) {
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if (virJSONValueObjectKeysNumber(obj) == 0) {
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ret = 0;
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goto cleanup;
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}
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*obj = jargs;
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jargs = NULL;
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ret = 1;
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cleanup:
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virJSONValueFree(jargs);
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return ret;
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}
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int
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virJSONValueObjectAdd(virJSONValuePtr obj, ...)
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{
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va_list args;
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int ret;
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va_start(args, obj);
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ret = virJSONValueObjectAddVArgs(obj, args);
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va_end(args);
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return ret;
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}
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int
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virJSONValueObjectCreateVArgs(virJSONValuePtr *obj,
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va_list args)
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{
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int ret;
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if (!(*obj = virJSONValueNewObject()))
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return -1;
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/* free the object on error, or if no value objects were added */
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if ((ret = virJSONValueObjectAddVArgs(*obj, args)) <= 0) {
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virJSONValueFree(*obj);
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*obj = NULL;
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}
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return ret;
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}
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@ -85,6 +85,11 @@ int virJSONValueObjectCreate(virJSONValuePtr *obj, ...)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_SENTINEL;
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int virJSONValueObjectCreateVArgs(virJSONValuePtr *obj, va_list args)
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ATTRIBUTE_NONNULL(1);
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int virJSONValueObjectAdd(virJSONValuePtr obj, ...)
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ATTRIBUTE_NONNULL(1) ATTRIBUTE_SENTINEL;
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int virJSONValueObjectAddVArgs(virJSONValuePtr obj, va_list args)
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ATTRIBUTE_NONNULL(1);
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virJSONValuePtr virJSONValueNewString(const char *data);
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virJSONValuePtr virJSONValueNewStringLen(const char *data, size_t length);
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