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-rw-r--r--vendor/golang.org/x/tools/go/buildutil/overlay.go103
1 files changed, 0 insertions, 103 deletions
diff --git a/vendor/golang.org/x/tools/go/buildutil/overlay.go b/vendor/golang.org/x/tools/go/buildutil/overlay.go
deleted file mode 100644
index 3f71c4fe..00000000
--- a/vendor/golang.org/x/tools/go/buildutil/overlay.go
+++ /dev/null
@@ -1,103 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package buildutil
-
-import (
- "bufio"
- "bytes"
- "fmt"
- "go/build"
- "io"
- "io/ioutil"
- "path/filepath"
- "strconv"
- "strings"
-)
-
-// OverlayContext overlays a build.Context with additional files from
-// a map. Files in the map take precedence over other files.
-//
-// In addition to plain string comparison, two file names are
-// considered equal if their base names match and their directory
-// components point at the same directory on the file system. That is,
-// symbolic links are followed for directories, but not files.
-//
-// A common use case for OverlayContext is to allow editors to pass in
-// a set of unsaved, modified files.
-//
-// Currently, only the Context.OpenFile function will respect the
-// overlay. This may change in the future.
-func OverlayContext(orig *build.Context, overlay map[string][]byte) *build.Context {
- // TODO(dominikh): Implement IsDir, HasSubdir and ReadDir
-
- rc := func(data []byte) (io.ReadCloser, error) {
- return ioutil.NopCloser(bytes.NewBuffer(data)), nil
- }
-
- copy := *orig // make a copy
- ctxt := &copy
- ctxt.OpenFile = func(path string) (io.ReadCloser, error) {
- // Fast path: names match exactly.
- if content, ok := overlay[path]; ok {
- return rc(content)
- }
-
- // Slow path: check for same file under a different
- // alias, perhaps due to a symbolic link.
- for filename, content := range overlay {
- if sameFile(path, filename) {
- return rc(content)
- }
- }
-
- return OpenFile(orig, path)
- }
- return ctxt
-}
-
-// ParseOverlayArchive parses an archive containing Go files and their
-// contents. The result is intended to be used with OverlayContext.
-//
-//
-// Archive format
-//
-// The archive consists of a series of files. Each file consists of a
-// name, a decimal file size and the file contents, separated by
-// newlinews. No newline follows after the file contents.
-func ParseOverlayArchive(archive io.Reader) (map[string][]byte, error) {
- overlay := make(map[string][]byte)
- r := bufio.NewReader(archive)
- for {
- // Read file name.
- filename, err := r.ReadString('\n')
- if err != nil {
- if err == io.EOF {
- break // OK
- }
- return nil, fmt.Errorf("reading archive file name: %v", err)
- }
- filename = filepath.Clean(strings.TrimSpace(filename))
-
- // Read file size.
- sz, err := r.ReadString('\n')
- if err != nil {
- return nil, fmt.Errorf("reading size of archive file %s: %v", filename, err)
- }
- sz = strings.TrimSpace(sz)
- size, err := strconv.ParseUint(sz, 10, 32)
- if err != nil {
- return nil, fmt.Errorf("parsing size of archive file %s: %v", filename, err)
- }
-
- // Read file content.
- content := make([]byte, size)
- if _, err := io.ReadFull(r, content); err != nil {
- return nil, fmt.Errorf("reading archive file %s: %v", filename, err)
- }
- overlay[filename] = content
- }
-
- return overlay, nil
-}