diff options
Diffstat (limited to 'vendor/github.com/xeipuuv/gojsonreference/reference.go')
-rw-r--r-- | vendor/github.com/xeipuuv/gojsonreference/reference.go | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/vendor/github.com/xeipuuv/gojsonreference/reference.go b/vendor/github.com/xeipuuv/gojsonreference/reference.go new file mode 100644 index 000000000..d4d2eca0a --- /dev/null +++ b/vendor/github.com/xeipuuv/gojsonreference/reference.go @@ -0,0 +1,141 @@ +// Copyright 2015 xeipuuv ( https://github.com/xeipuuv ) +// +// 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. + +// author xeipuuv +// author-github https://github.com/xeipuuv +// author-mail xeipuuv@gmail.com +// +// repository-name gojsonreference +// repository-desc An implementation of JSON Reference - Go language +// +// description Main and unique file. +// +// created 26-02-2013 + +package gojsonreference + +import ( + "errors" + "github.com/xeipuuv/gojsonpointer" + "net/url" + "path/filepath" + "runtime" + "strings" +) + +const ( + const_fragment_char = `#` +) + +func NewJsonReference(jsonReferenceString string) (JsonReference, error) { + + var r JsonReference + err := r.parse(jsonReferenceString) + return r, err + +} + +type JsonReference struct { + referenceUrl *url.URL + referencePointer gojsonpointer.JsonPointer + + HasFullUrl bool + HasUrlPathOnly bool + HasFragmentOnly bool + HasFileScheme bool + HasFullFilePath bool +} + +func (r *JsonReference) GetUrl() *url.URL { + return r.referenceUrl +} + +func (r *JsonReference) GetPointer() *gojsonpointer.JsonPointer { + return &r.referencePointer +} + +func (r *JsonReference) String() string { + + if r.referenceUrl != nil { + return r.referenceUrl.String() + } + + if r.HasFragmentOnly { + return const_fragment_char + r.referencePointer.String() + } + + return r.referencePointer.String() +} + +func (r *JsonReference) IsCanonical() bool { + return (r.HasFileScheme && r.HasFullFilePath) || (!r.HasFileScheme && r.HasFullUrl) +} + +// "Constructor", parses the given string JSON reference +func (r *JsonReference) parse(jsonReferenceString string) (err error) { + + r.referenceUrl, err = url.Parse(jsonReferenceString) + if err != nil { + return + } + refUrl := r.referenceUrl + + if refUrl.Scheme != "" && refUrl.Host != "" { + r.HasFullUrl = true + } else { + if refUrl.Path != "" { + r.HasUrlPathOnly = true + } else if refUrl.RawQuery == "" && refUrl.Fragment != "" { + r.HasFragmentOnly = true + } + } + + r.HasFileScheme = refUrl.Scheme == "file" + if runtime.GOOS == "windows" { + // on Windows, a file URL may have an extra leading slash, and if it + // doesn't then its first component will be treated as the host by the + // Go runtime + if refUrl.Host == "" && strings.HasPrefix(refUrl.Path, "/") { + r.HasFullFilePath = filepath.IsAbs(refUrl.Path[1:]) + } else { + r.HasFullFilePath = filepath.IsAbs(refUrl.Host + refUrl.Path) + } + } else { + r.HasFullFilePath = filepath.IsAbs(refUrl.Path) + } + + // invalid json-pointer error means url has no json-pointer fragment. simply ignore error + r.referencePointer, _ = gojsonpointer.NewJsonPointer(refUrl.Fragment) + + return +} + +// Creates a new reference from a parent and a child +// If the child cannot inherit from the parent, an error is returned +func (r *JsonReference) Inherits(child JsonReference) (*JsonReference, error) { + childUrl := child.GetUrl() + parentUrl := r.GetUrl() + if childUrl == nil { + return nil, errors.New("childUrl is nil!") + } + if parentUrl == nil { + return nil, errors.New("parentUrl is nil!") + } + + ref, err := NewJsonReference(parentUrl.ResolveReference(childUrl).String()) + if err != nil { + return nil, err + } + return &ref, err +} |