some deletions

[dotfiles/.git] / .config / coc / extensions / coc-go-data / tools / pkg / mod / golang.org / x / mod@v0.3.0 / sumdb / dirhash / hash.go

diff --git a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/mod@v0.3.0/sumdb/dirhash/hash.go b/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/mod@v0.3.0/sumdb/dirhash/hash.go
deleted file mode 100644 (file)
index ef5df6f..0000000
--- a/.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/mod@v0.3.0/sumdb/dirhash/hash.go
+++ /dev/null
@@ -1,132 +0,0 @@
-// Copyright 2018 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 dirhash defines hashes over directory trees.
-// These hashes are recorded in go.sum files and in the Go checksum database,
-// to allow verifying that a newly-downloaded module has the expected content.
-package dirhash
-
-import (
-       "archive/zip"
-       "crypto/sha256"
-       "encoding/base64"
-       "errors"
-       "fmt"
-       "io"
-       "os"
-       "path/filepath"
-       "sort"
-       "strings"
-)
-
-// DefaultHash is the default hash function used in new go.sum entries.
-var DefaultHash Hash = Hash1
-
-// A Hash is a directory hash function.
-// It accepts a list of files along with a function that opens the content of each file.
-// It opens, reads, hashes, and closes each file and returns the overall directory hash.
-type Hash func(files []string, open func(string) (io.ReadCloser, error)) (string, error)
-
-// Hash1 is the "h1:" directory hash function, using SHA-256.
-//
-// Hash1 is "h1:" followed by the base64-encoded SHA-256 hash of a summary
-// prepared as if by the Unix command:
-//
-//     find . -type f | sort | sha256sum
-//
-// More precisely, the hashed summary contains a single line for each file in the list,
-// ordered by sort.Strings applied to the file names, where each line consists of
-// the hexadecimal SHA-256 hash of the file content,
-// two spaces (U+0020), the file name, and a newline (U+000A).
-//
-// File names with newlines (U+000A) are disallowed.
-func Hash1(files []string, open func(string) (io.ReadCloser, error)) (string, error) {
-       h := sha256.New()
-       files = append([]string(nil), files...)
-       sort.Strings(files)
-       for _, file := range files {
-               if strings.Contains(file, "\n") {
-                       return "", errors.New("dirhash: filenames with newlines are not supported")
-               }
-               r, err := open(file)
-               if err != nil {
-                       return "", err
-               }
-               hf := sha256.New()
-               _, err = io.Copy(hf, r)
-               r.Close()
-               if err != nil {
-                       return "", err
-               }
-               fmt.Fprintf(h, "%x  %s\n", hf.Sum(nil), file)
-       }
-       return "h1:" + base64.StdEncoding.EncodeToString(h.Sum(nil)), nil
-}
-
-// HashDir returns the hash of the local file system directory dir,
-// replacing the directory name itself with prefix in the file names
-// used in the hash function.
-func HashDir(dir, prefix string, hash Hash) (string, error) {
-       files, err := DirFiles(dir, prefix)
-       if err != nil {
-               return "", err
-       }
-       osOpen := func(name string) (io.ReadCloser, error) {
-               return os.Open(filepath.Join(dir, strings.TrimPrefix(name, prefix)))
-       }
-       return hash(files, osOpen)
-}
-
-// DirFiles returns the list of files in the tree rooted at dir,
-// replacing the directory name dir with prefix in each name.
-// The resulting names always use forward slashes.
-func DirFiles(dir, prefix string) ([]string, error) {
-       var files []string
-       dir = filepath.Clean(dir)
-       err := filepath.Walk(dir, func(file string, info os.FileInfo, err error) error {
-               if err != nil {
-                       return err
-               }
-               if info.IsDir() {
-                       return nil
-               }
-               rel := file
-               if dir != "." {
-                       rel = file[len(dir)+1:]
-               }
-               f := filepath.Join(prefix, rel)
-               files = append(files, filepath.ToSlash(f))
-               return nil
-       })
-       if err != nil {
-               return nil, err
-       }
-       return files, nil
-}
-
-// HashZip returns the hash of the file content in the named zip file.
-// Only the file names and their contents are included in the hash:
-// the exact zip file format encoding, compression method,
-// per-file modification times, and other metadata are ignored.
-func HashZip(zipfile string, hash Hash) (string, error) {
-       z, err := zip.OpenReader(zipfile)
-       if err != nil {
-               return "", err
-       }
-       defer z.Close()
-       var files []string
-       zfiles := make(map[string]*zip.File)
-       for _, file := range z.File {
-               files = append(files, file.Name)
-               zfiles[file.Name] = file
-       }
-       zipOpen := func(name string) (io.ReadCloser, error) {
-               f := zfiles[name]
-               if f == nil {
-                       return nil, fmt.Errorf("file %q not found in zip", name) // should never happen
-               }
-               return f.Open()
-       }
-       return hash(files, zipOpen)
-}