1 files changed, 137 insertions, 0 deletions
diff --git a/vendor/github.com/go-openapi/loads/loaders.go b/vendor/github.com/go-openapi/loads/loaders.go
new file mode 100644
index 0000000000..9618b0d6d1
--- /dev/null
+++ b/vendor/github.com/go-openapi/loads/loaders.go
@@ -0,0 +1,137 @@
+package loads
+
+import (
+	"encoding/json"
+	"errors"
+	"net/url"
+
+	"github.com/go-openapi/spec"
+	"github.com/go-openapi/swag"
+)
+
+var (
+	// Default chain of loaders, defined at the package level.
+	//
+	// By default this matches json and yaml documents.
+	//
+	// May be altered with AddLoader().
+	loaders *loader
+
+	// Default loader. This expects json documents over local or http/https (no matching).
+	defaultLoader *loader
+
+	defaultMatcher DocMatcher
+)
+
+func init() {
+	defaultMatcher = func(_ string) bool { return true }
+
+	defaultLoader = &loader{
+		DocLoaderWithMatch: DocLoaderWithMatch{
+			Match: defaultMatcher,
+			Fn:    JSONDoc,
+		},
+	}
+	loaders = defaultLoader
+
+	AddLoader(swag.YAMLMatcher, swag.YAMLDoc)
+
+	// sets the global default loader for go-openapi/spec
+	spec.PathLoader = loaders.Load
+}
+
+// DocLoader represents a doc loader type
+type DocLoader func(string) (json.RawMessage, error)
+
+// DocMatcher represents a predicate to check if a loader matches
+type DocMatcher func(string) bool
+
+// DocLoaderWithMatch describes a loading function for a given extension match.
+type DocLoaderWithMatch struct {
+	Fn    DocLoader
+	Match DocMatcher
+}
+
+// NewDocLoaderWithMatch builds a DocLoaderWithMatch to be used in load options
+func NewDocLoaderWithMatch(fn DocLoader, matcher DocMatcher) DocLoaderWithMatch {
+	return DocLoaderWithMatch{
+		Fn:    fn,
+		Match: matcher,
+	}
+}
+
+type loader struct {
+	DocLoaderWithMatch
+	Next *loader
+}
+
+// WithHead adds a loader at the head of the current stack
+func (l *loader) WithHead(head *loader) *loader {
+	if head == nil {
+		return l
+	}
+	head.Next = l
+	return head
+}
+
+// WithNext adds a loader at the trail of the current stack
+func (l *loader) WithNext(next *loader) *loader {
+	l.Next = next
+	return next
+}
+
+// Load the raw document from path
+func (l *loader) Load(path string) (json.RawMessage, error) {
+	specURL, erp := url.Parse(path)
+	if erp != nil {
+		return nil, erp
+	}
+
+	var lastErr error = errors.New("no loader matched") // default error if no match was found
+	for ldr := l; ldr != nil; ldr = ldr.Next {
+		if ldr.Match != nil && !ldr.Match(specURL.Path) {
+			continue
+		}
+
+		// try then move to next one if there is an error
+		b, err := ldr.Fn(path)
+		if err == nil {
+			return b, nil
+		}
+
+		lastErr = err
+	}
+
+	return nil, lastErr
+}
+
+// JSONDoc loads a json document from either a file or a remote url
+func JSONDoc(path string) (json.RawMessage, error) {
+	data, err := swag.LoadFromFileOrHTTP(path)
+	if err != nil {
+		return nil, err
+	}
+	return json.RawMessage(data), nil
+}
+
+// AddLoader for a document, executed before other previously set loaders.
+//
+// This sets the configuration at the package level.
+//
+// The default initial loader at the package level assumes a JSON document.
+//
+// NOTE:
+//  * this updates the default loader used by github.com/go-openapi/spec
+//  * since this sets package level globals, you shouln't call this concurrently
+//
+func AddLoader(predicate DocMatcher, load DocLoader) {
+	loaders = loaders.WithHead(&loader{
+		DocLoaderWithMatch: DocLoaderWithMatch{
+			Match: predicate,
+			Fn:    load,
+		},
+	})
+
+	// sets the global default loader for go-openapi/spec
+	spec.PathLoader = loaders.Load
+}