Use vendored go-swagger (#8087)

* Use vendored go-swagger

* vendor go-swagger

* revert un wanteed change

* remove un-needed GO111MODULE

* Update Makefile

Co-Authored-By: techknowlogick <matti@mdranta.net>

1 files changed, 152 insertions, 0 deletions

diff --git a/vendor/github.com/go-openapi/spec/normalizer.go b/vendor/github.com/go-openapi/spec/normalizer.go
new file mode 100644
index 0000000000..b8957e7c0c
--- /dev/null
+++ b/vendor/github.com/go-openapi/spec/normalizer.go
@@ -0,0 +1,152 @@
+// Copyright 2015 go-swagger maintainers
+//
+// 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 spec
+
+import (
+	"fmt"
+	"net/url"
+	"os"
+	"path"
+	"path/filepath"
+	"strings"
+)
+
+// normalize absolute path for cache.
+// on Windows, drive letters should be converted to lower as scheme in net/url.URL
+func normalizeAbsPath(path string) string {
+	u, err := url.Parse(path)
+	if err != nil {
+		debugLog("normalize absolute path failed: %s", err)
+		return path
+	}
+	return u.String()
+}
+
+// base or refPath could be a file path or a URL
+// given a base absolute path and a ref path, return the absolute path of refPath
+// 1) if refPath is absolute, return it
+// 2) if refPath is relative, join it with basePath keeping the scheme, hosts, and ports if exists
+// base could be a directory or a full file path
+func normalizePaths(refPath, base string) string {
+	refURL, _ := url.Parse(refPath)
+	if path.IsAbs(refURL.Path) || filepath.IsAbs(refPath) {
+		// refPath is actually absolute
+		if refURL.Host != "" {
+			return refPath
+		}
+		parts := strings.Split(refPath, "#")
+		result := filepath.FromSlash(parts[0])
+		if len(parts) == 2 {
+			result += "#" + parts[1]
+		}
+		return result
+	}
+
+	// relative refPath
+	baseURL, _ := url.Parse(base)
+	if !strings.HasPrefix(refPath, "#") {
+		// combining paths
+		if baseURL.Host != "" {
+			baseURL.Path = path.Join(path.Dir(baseURL.Path), refURL.Path)
+		} else { // base is a file
+			newBase := fmt.Sprintf("%s#%s", filepath.Join(filepath.Dir(base), filepath.FromSlash(refURL.Path)), refURL.Fragment)
+			return newBase
+		}
+
+	}
+	// copying fragment from ref to base
+	baseURL.Fragment = refURL.Fragment
+	return baseURL.String()
+}
+
+// denormalizePaths returns to simplest notation on file $ref,
+// i.e. strips the absolute path and sets a path relative to the base path.
+//
+// This is currently used when we rewrite ref after a circular ref has been detected
+func denormalizeFileRef(ref *Ref, relativeBase, originalRelativeBase string) *Ref {
+	debugLog("denormalizeFileRef for: %s", ref.String())
+
+	if ref.String() == "" || ref.IsRoot() || ref.HasFragmentOnly {
+		return ref
+	}
+	// strip relativeBase from URI
+	relativeBaseURL, _ := url.Parse(relativeBase)
+	relativeBaseURL.Fragment = ""
+
+	if relativeBaseURL.IsAbs() && strings.HasPrefix(ref.String(), relativeBase) {
+		// this should work for absolute URI (e.g. http://...): we have an exact match, just trim prefix
+		r, _ := NewRef(strings.TrimPrefix(ref.String(), relativeBase))
+		return &r
+	}
+
+	if relativeBaseURL.IsAbs() {
+		// other absolute URL get unchanged (i.e. with a non-empty scheme)
+		return ref
+	}
+
+	// for relative file URIs:
+	originalRelativeBaseURL, _ := url.Parse(originalRelativeBase)
+	originalRelativeBaseURL.Fragment = ""
+	if strings.HasPrefix(ref.String(), originalRelativeBaseURL.String()) {
+		// the resulting ref is in the expanded spec: return a local ref
+		r, _ := NewRef(strings.TrimPrefix(ref.String(), originalRelativeBaseURL.String()))
+		return &r
+	}
+
+	// check if we may set a relative path, considering the original base path for this spec.
+	// Example:
+	//   spec is located at /mypath/spec.json
+	//   my normalized ref points to: /mypath/item.json#/target
+	//   expected result: item.json#/target
+	parts := strings.Split(ref.String(), "#")
+	relativePath, err := filepath.Rel(path.Dir(originalRelativeBaseURL.String()), parts[0])
+	if err != nil {
+		// there is no common ancestor (e.g. different drives on windows)
+		// leaves the ref unchanged
+		return ref
+	}
+	if len(parts) == 2 {
+		relativePath += "#" + parts[1]
+	}
+	r, _ := NewRef(relativePath)
+	return &r
+}
+
+// relativeBase could be an ABSOLUTE file path or an ABSOLUTE URL
+func normalizeFileRef(ref *Ref, relativeBase string) *Ref {
+	// This is important for when the reference is pointing to the root schema
+	if ref.String() == "" {
+		r, _ := NewRef(relativeBase)
+		return &r
+	}
+
+	debugLog("normalizing %s against %s", ref.String(), relativeBase)
+
+	s := normalizePaths(ref.String(), relativeBase)
+	r, _ := NewRef(s)
+	return &r
+}
+
+// absPath returns the absolute path of a file
+func absPath(fname string) (string, error) {
+	if strings.HasPrefix(fname, "http") {
+		return fname, nil
+	}
+	if filepath.IsAbs(fname) {
+		return fname, nil
+	}
+	wd, err := os.Getwd()
+	return filepath.Join(wd, fname), err
+}