--- /dev/null
+'use strict';
+
+var URI = require('uri-js')
+ , equal = require('fast-deep-equal')
+ , util = require('./util')
+ , SchemaObject = require('./schema_obj')
+ , traverse = require('json-schema-traverse');
+
+module.exports = resolve;
+
+resolve.normalizeId = normalizeId;
+resolve.fullPath = getFullPath;
+resolve.url = resolveUrl;
+resolve.ids = resolveIds;
+resolve.inlineRef = inlineRef;
+resolve.schema = resolveSchema;
+
+/**
+ * [resolve and compile the references ($ref)]
+ * @this Ajv
+ * @param {Function} compile reference to schema compilation funciton (localCompile)
+ * @param {Object} root object with information about the root schema for the current schema
+ * @param {String} ref reference to resolve
+ * @return {Object|Function} schema object (if the schema can be inlined) or validation function
+ */
+function resolve(compile, root, ref) {
+ /* jshint validthis: true */
+ var refVal = this._refs[ref];
+ if (typeof refVal == 'string') {
+ if (this._refs[refVal]) refVal = this._refs[refVal];
+ else return resolve.call(this, compile, root, refVal);
+ }
+
+ refVal = refVal || this._schemas[ref];
+ if (refVal instanceof SchemaObject) {
+ return inlineRef(refVal.schema, this._opts.inlineRefs)
+ ? refVal.schema
+ : refVal.validate || this._compile(refVal);
+ }
+
+ var res = resolveSchema.call(this, root, ref);
+ var schema, v, baseId;
+ if (res) {
+ schema = res.schema;
+ root = res.root;
+ baseId = res.baseId;
+ }
+
+ if (schema instanceof SchemaObject) {
+ v = schema.validate || compile.call(this, schema.schema, root, undefined, baseId);
+ } else if (schema !== undefined) {
+ v = inlineRef(schema, this._opts.inlineRefs)
+ ? schema
+ : compile.call(this, schema, root, undefined, baseId);
+ }
+
+ return v;
+}
+
+
+/**
+ * Resolve schema, its root and baseId
+ * @this Ajv
+ * @param {Object} root root object with properties schema, refVal, refs
+ * @param {String} ref reference to resolve
+ * @return {Object} object with properties schema, root, baseId
+ */
+function resolveSchema(root, ref) {
+ /* jshint validthis: true */
+ var p = URI.parse(ref)
+ , refPath = _getFullPath(p)
+ , baseId = getFullPath(this._getId(root.schema));
+ if (Object.keys(root.schema).length === 0 || refPath !== baseId) {
+ var id = normalizeId(refPath);
+ var refVal = this._refs[id];
+ if (typeof refVal == 'string') {
+ return resolveRecursive.call(this, root, refVal, p);
+ } else if (refVal instanceof SchemaObject) {
+ if (!refVal.validate) this._compile(refVal);
+ root = refVal;
+ } else {
+ refVal = this._schemas[id];
+ if (refVal instanceof SchemaObject) {
+ if (!refVal.validate) this._compile(refVal);
+ if (id == normalizeId(ref))
+ return { schema: refVal, root: root, baseId: baseId };
+ root = refVal;
+ } else {
+ return;
+ }
+ }
+ if (!root.schema) return;
+ baseId = getFullPath(this._getId(root.schema));
+ }
+ return getJsonPointer.call(this, p, baseId, root.schema, root);
+}
+
+
+/* @this Ajv */
+function resolveRecursive(root, ref, parsedRef) {
+ /* jshint validthis: true */
+ var res = resolveSchema.call(this, root, ref);
+ if (res) {
+ var schema = res.schema;
+ var baseId = res.baseId;
+ root = res.root;
+ var id = this._getId(schema);
+ if (id) baseId = resolveUrl(baseId, id);
+ return getJsonPointer.call(this, parsedRef, baseId, schema, root);
+ }
+}
+
+
+var PREVENT_SCOPE_CHANGE = util.toHash(['properties', 'patternProperties', 'enum', 'dependencies', 'definitions']);
+/* @this Ajv */
+function getJsonPointer(parsedRef, baseId, schema, root) {
+ /* jshint validthis: true */
+ parsedRef.fragment = parsedRef.fragment || '';
+ if (parsedRef.fragment.slice(0,1) != '/') return;
+ var parts = parsedRef.fragment.split('/');
+
+ for (var i = 1; i < parts.length; i++) {
+ var part = parts[i];
+ if (part) {
+ part = util.unescapeFragment(part);
+ schema = schema[part];
+ if (schema === undefined) break;
+ var id;
+ if (!PREVENT_SCOPE_CHANGE[part]) {
+ id = this._getId(schema);
+ if (id) baseId = resolveUrl(baseId, id);
+ if (schema.$ref) {
+ var $ref = resolveUrl(baseId, schema.$ref);
+ var res = resolveSchema.call(this, root, $ref);
+ if (res) {
+ schema = res.schema;
+ root = res.root;
+ baseId = res.baseId;
+ }
+ }
+ }
+ }
+ }
+ if (schema !== undefined && schema !== root.schema)
+ return { schema: schema, root: root, baseId: baseId };
+}
+
+
+var SIMPLE_INLINED = util.toHash([
+ 'type', 'format', 'pattern',
+ 'maxLength', 'minLength',
+ 'maxProperties', 'minProperties',
+ 'maxItems', 'minItems',
+ 'maximum', 'minimum',
+ 'uniqueItems', 'multipleOf',
+ 'required', 'enum'
+]);
+function inlineRef(schema, limit) {
+ if (limit === false) return false;
+ if (limit === undefined || limit === true) return checkNoRef(schema);
+ else if (limit) return countKeys(schema) <= limit;
+}
+
+
+function checkNoRef(schema) {
+ var item;
+ if (Array.isArray(schema)) {
+ for (var i=0; i<schema.length; i++) {
+ item = schema[i];
+ if (typeof item == 'object' && !checkNoRef(item)) return false;
+ }
+ } else {
+ for (var key in schema) {
+ if (key == '$ref') return false;
+ item = schema[key];
+ if (typeof item == 'object' && !checkNoRef(item)) return false;
+ }
+ }
+ return true;
+}
+
+
+function countKeys(schema) {
+ var count = 0, item;
+ if (Array.isArray(schema)) {
+ for (var i=0; i<schema.length; i++) {
+ item = schema[i];
+ if (typeof item == 'object') count += countKeys(item);
+ if (count == Infinity) return Infinity;
+ }
+ } else {
+ for (var key in schema) {
+ if (key == '$ref') return Infinity;
+ if (SIMPLE_INLINED[key]) {
+ count++;
+ } else {
+ item = schema[key];
+ if (typeof item == 'object') count += countKeys(item) + 1;
+ if (count == Infinity) return Infinity;
+ }
+ }
+ }
+ return count;
+}
+
+
+function getFullPath(id, normalize) {
+ if (normalize !== false) id = normalizeId(id);
+ var p = URI.parse(id);
+ return _getFullPath(p);
+}
+
+
+function _getFullPath(p) {
+ return URI.serialize(p).split('#')[0] + '#';
+}
+
+
+var TRAILING_SLASH_HASH = /#\/?$/;
+function normalizeId(id) {
+ return id ? id.replace(TRAILING_SLASH_HASH, '') : '';
+}
+
+
+function resolveUrl(baseId, id) {
+ id = normalizeId(id);
+ return URI.resolve(baseId, id);
+}
+
+
+/* @this Ajv */
+function resolveIds(schema) {
+ var schemaId = normalizeId(this._getId(schema));
+ var baseIds = {'': schemaId};
+ var fullPaths = {'': getFullPath(schemaId, false)};
+ var localRefs = {};
+ var self = this;
+
+ traverse(schema, {allKeys: true}, function(sch, jsonPtr, rootSchema, parentJsonPtr, parentKeyword, parentSchema, keyIndex) {
+ if (jsonPtr === '') return;
+ var id = self._getId(sch);
+ var baseId = baseIds[parentJsonPtr];
+ var fullPath = fullPaths[parentJsonPtr] + '/' + parentKeyword;
+ if (keyIndex !== undefined)
+ fullPath += '/' + (typeof keyIndex == 'number' ? keyIndex : util.escapeFragment(keyIndex));
+
+ if (typeof id == 'string') {
+ id = baseId = normalizeId(baseId ? URI.resolve(baseId, id) : id);
+
+ var refVal = self._refs[id];
+ if (typeof refVal == 'string') refVal = self._refs[refVal];
+ if (refVal && refVal.schema) {
+ if (!equal(sch, refVal.schema))
+ throw new Error('id "' + id + '" resolves to more than one schema');
+ } else if (id != normalizeId(fullPath)) {
+ if (id[0] == '#') {
+ if (localRefs[id] && !equal(sch, localRefs[id]))
+ throw new Error('id "' + id + '" resolves to more than one schema');
+ localRefs[id] = sch;
+ } else {
+ self._refs[id] = fullPath;
+ }
+ }
+ }
+ baseIds[jsonPtr] = baseId;
+ fullPaths[jsonPtr] = fullPath;
+ });
+
+ return localRefs;
+}
projects / dotfiles / .git / blobdiff