diff --git a/src/qemu/qemu_qapi.c b/src/qemu/qemu_qapi.c index 4ed67b68bc4fe6c4417146bcb87aead8fd233945..0226d6c6590291cdf541bc8a63bbb5c421d45e58 100644 --- a/src/qemu/qemu_qapi.c +++ b/src/qemu/qemu_qapi.c @@ -109,6 +109,40 @@ virQEMUQAPISchemaTraverse(const char *baseName, struct virQEMUQAPISchemaTraverseContext *ctxt); +/** + * @featurename: name of 'feature' field to select + * @elem: QAPI JSON entry for a type + * + * Looks for @featurename in the array of 'features' for given type passed in + * via @elem. Returns 1 if @featurename is present, 0 if it's not present + * (or @elem has no 'features') or -2 if the schema is malformed. + * (see virQEMUQAPISchemaTraverseFunc) + */ +static int +virQEMUQAPISchemaTraverseHasObjectFeature(const char *featurename, + virJSONValuePtr elem) +{ + virJSONValuePtr featuresarray; + virJSONValuePtr cur; + const char *curstr; + size_t i; + + if (!(featuresarray = virJSONValueObjectGetArray(elem, "features"))) + return 0; + + for (i = 0; i < virJSONValueArraySize(featuresarray); i++) { + if (!(cur = virJSONValueArrayGet(featuresarray, i)) || + !(curstr = virJSONValueGetString(cur))) + return -2; + + if (STREQ(featurename, curstr)) + return 1; + } + + return 0; +} + + static int virQEMUQAPISchemaTraverseObject(virJSONValuePtr cur, struct virQEMUQAPISchemaTraverseContext *ctxt) @@ -124,6 +158,13 @@ virQEMUQAPISchemaTraverseObject(virJSONValuePtr cur, if (modifier == '^' || modifier == '!') return 0; + if (modifier == '$') { + if (virQEMUQAPISchemaTraverseContextHasNextQuery(ctxt)) + return -3; + + return virQEMUQAPISchemaTraverseHasObjectFeature(query, cur); + } + if (modifier == '+') { obj = virQEMUQAPISchemaObjectGet("variants", query, "case", cur); } else { @@ -339,6 +380,8 @@ virQEMUQAPISchemaTraverse(const char *baseName, * '!basictype': returns true if previously selected type is of 'basictype' * JSON type. Spported are 'null', 'string', 'number', 'value', * 'int' and 'boolean. + * '$feature': returns true if the previously selected type supports 'feature' + * ('feature' is in the 'features' array of given type) * * If the name of any (sub)attribute starts with non-alphabetical symbols it * needs to be prefixed by a single space.