1 files changed, 203 insertions, 0 deletions
diff --git a/vendor/github.com/xeipuuv/gojsonschema/schemaLoader.go b/vendor/github.com/xeipuuv/gojsonschema/schemaLoader.go
new file mode 100644
index 000000000..95e0568ab
--- /dev/null
+++ b/vendor/github.com/xeipuuv/gojsonschema/schemaLoader.go
@@ -0,0 +1,203 @@
+// Copyright 2018 johandorland ( https://github.com/johandorland )
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package gojsonschema
+
+import (
+	"bytes"
+	"errors"
+
+	"github.com/xeipuuv/gojsonreference"
+)
+
+type SchemaLoader struct {
+	pool       *schemaPool
+	AutoDetect bool
+	Validate   bool
+	Draft      Draft
+}
+
+func NewSchemaLoader() *SchemaLoader {
+
+	ps := &SchemaLoader{
+		pool: &schemaPool{
+			schemaPoolDocuments: make(map[string]*schemaPoolDocument),
+		},
+		AutoDetect: true,
+		Validate:   false,
+		Draft:      Hybrid,
+	}
+	ps.pool.autoDetect = &ps.AutoDetect
+
+	return ps
+}
+
+func (sl *SchemaLoader) validateMetaschema(documentNode interface{}) error {
+
+	var (
+		schema string
+		err    error
+	)
+	if sl.AutoDetect {
+		schema, _, err = parseSchemaURL(documentNode)
+		if err != nil {
+			return err
+		}
+	}
+
+	// If no explicit "$schema" is used, use the default metaschema associated with the draft used
+	if schema == "" {
+		if sl.Draft == Hybrid {
+			return nil
+		}
+		schema = drafts.GetSchemaURL(sl.Draft)
+	}
+
+	//Disable validation when loading the metaschema to prevent an infinite recursive loop
+	sl.Validate = false
+
+	metaSchema, err := sl.Compile(NewReferenceLoader(schema))
+
+	if err != nil {
+		return err
+	}
+
+	sl.Validate = true
+
+	result := metaSchema.validateDocument(documentNode)
+
+	if !result.Valid() {
+		var res bytes.Buffer
+		for _, err := range result.Errors() {
+			res.WriteString(err.String())
+			res.WriteString("\n")
+		}
+		return errors.New(res.String())
+	}
+
+	return nil
+}
+
+// AddSchemas adds an arbritrary amount of schemas to the schema cache. As this function does not require
+// an explicit URL, every schema should contain an $id, so that it can be referenced by the main schema
+func (sl *SchemaLoader) AddSchemas(loaders ...JSONLoader) error {
+	emptyRef, _ := gojsonreference.NewJsonReference("")
+
+	for _, loader := range loaders {
+		doc, err := loader.LoadJSON()
+
+		if err != nil {
+			return err
+		}
+
+		if sl.Validate {
+			if err := sl.validateMetaschema(doc); err != nil {
+				return err
+			}
+		}
+
+		// Directly use the Recursive function, so that it get only added to the schema pool by $id
+		// and not by the ref of the document as it's empty
+		if err = sl.pool.parseReferences(doc, emptyRef, false); err != nil {
+			return err
+		}
+	}
+
+	return nil
+}
+
+//AddSchema adds a schema under the provided URL to the schema cache
+func (sl *SchemaLoader) AddSchema(url string, loader JSONLoader) error {
+
+	ref, err := gojsonreference.NewJsonReference(url)
+
+	if err != nil {
+		return err
+	}
+
+	doc, err := loader.LoadJSON()
+
+	if err != nil {
+		return err
+	}
+
+	if sl.Validate {
+		if err := sl.validateMetaschema(doc); err != nil {
+			return err
+		}
+	}
+
+	return sl.pool.parseReferences(doc, ref, true)
+}
+
+func (sl *SchemaLoader) Compile(rootSchema JSONLoader) (*Schema, error) {
+
+	ref, err := rootSchema.JsonReference()
+
+	if err != nil {
+		return nil, err
+	}
+
+	d := Schema{}
+	d.pool = sl.pool
+	d.pool.jsonLoaderFactory = rootSchema.LoaderFactory()
+	d.documentReference = ref
+	d.referencePool = newSchemaReferencePool()
+
+	var doc interface{}
+	if ref.String() != "" {
+		// Get document from schema pool
+		spd, err := d.pool.GetDocument(d.documentReference)
+		if err != nil {
+			return nil, err
+		}
+		doc = spd.Document
+	} else {
+		// Load JSON directly
+		doc, err = rootSchema.LoadJSON()
+		if err != nil {
+			return nil, err
+		}
+		// References need only be parsed if loading JSON directly
+		//  as pool.GetDocument already does this for us if loading by reference
+		err = sl.pool.parseReferences(doc, ref, true)
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	if sl.Validate {
+		if err := sl.validateMetaschema(doc); err != nil {
+			return nil, err
+		}
+	}
+
+	draft := sl.Draft
+	if sl.AutoDetect {
+		_, detectedDraft, err := parseSchemaURL(doc)
+		if err != nil {
+			return nil, err
+		}
+		if detectedDraft != nil {
+			draft = *detectedDraft
+		}
+	}
+
+	err = d.parse(doc, draft)
+	if err != nil {
+		return nil, err
+	}
+
+	return &d, nil
+}