mirror of
https://github.com/ethereum/go-ethereum.git
synced 2026-02-26 15:47:21 +00:00
e58c785424
Fixes an issue where HashFolder skipped the root directory upon hitting the first file in the excludes list. This happened because the walk function returned SkipDir even for regular files.
77 lines
2.1 KiB
Go
77 lines
2.1 KiB
Go
// Copyright 2024 The go-ethereum Authors
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// This file is part of the go-ethereum library.
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//
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// The go-ethereum library is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Lesser General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// The go-ethereum library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public License
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// along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
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package build
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import (
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"crypto/sha256"
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"io"
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"os"
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"path/filepath"
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"slices"
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)
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// HashFolder iterates all files under the given directory, computing the hash
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// of each.
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func HashFolder(folder string, excludes []string) (map[string][32]byte, error) {
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res := make(map[string][32]byte)
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err := filepath.WalkDir(folder, func(path string, d os.DirEntry, _ error) error {
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// Skip anything that's exluded or not a regular file
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// Skip anything that's excluded or not a regular file
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if slices.Contains(excludes, path) {
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if d.IsDir() {
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return filepath.SkipDir
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}
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return nil
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}
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if !d.Type().IsRegular() {
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return nil
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}
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// Regular file found, hash it
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f, err := os.OpenFile(path, os.O_RDONLY, 0666)
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if err != nil {
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return err
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}
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hasher := sha256.New()
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if _, err := io.Copy(hasher, f); err != nil {
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return err
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}
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res[path] = [32]byte(hasher.Sum(nil))
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return nil
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})
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if err != nil {
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return nil, err
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}
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return res, nil
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}
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// DiffHashes compares two maps of file hashes and returns the changed files.
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func DiffHashes(a map[string][32]byte, b map[string][32]byte) []string {
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var updates []string
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for file := range a {
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if _, ok := b[file]; !ok || a[file] != b[file] {
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updates = append(updates, file)
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}
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}
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for file := range b {
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if _, ok := a[file]; !ok {
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updates = append(updates, file)
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}
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}
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slices.Sort(updates)
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return updates
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}
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