mirror of https://github.com/restic/restic.git
144 lines
2.2 KiB
Go
144 lines
2.2 KiB
Go
package main
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import (
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"fmt"
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"os"
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"path/filepath"
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"syscall"
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)
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const backlog = 100
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type entry struct {
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path string
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fi os.FileInfo
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}
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func walk(dir string) <-chan *entry {
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ch := make(chan *entry, 100)
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go func() {
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err := filepath.Walk(dir, func(path string, info os.FileInfo, err error) error {
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if err != nil {
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fmt.Fprintf(os.Stderr, "error: %v\n", err)
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return nil
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}
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name, err := filepath.Rel(dir, path)
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if err != nil {
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fmt.Fprintf(os.Stderr, "error: %v\n", err)
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return nil
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}
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ch <- &entry{
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path: name,
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fi: info,
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}
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return nil
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})
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if err != nil {
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fmt.Fprintf(os.Stderr, "Walk() error: %v\n", err)
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}
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close(ch)
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}()
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// first element is root
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_ = <-ch
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return ch
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}
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func (e *entry) equals(other *entry) bool {
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if e.path != other.path {
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fmt.Printf("path does not match\n")
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return false
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}
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if e.fi.Mode() != other.fi.Mode() {
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fmt.Printf("mode does not match\n")
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return false
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}
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if e.fi.ModTime() != other.fi.ModTime() {
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fmt.Printf("%s: ModTime does not match\n", e.path)
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// TODO: Fix ModTime for directories, return false
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return true
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}
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stat, _ := e.fi.Sys().(*syscall.Stat_t)
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stat2, _ := other.fi.Sys().(*syscall.Stat_t)
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if stat.Uid != stat2.Uid || stat2.Gid != stat2.Gid {
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return false
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}
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return true
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}
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func main() {
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if len(os.Args) != 3 {
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fmt.Fprintf(os.Stderr, "USAGE: %s DIR1 DIR2\n", os.Args[0])
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os.Exit(1)
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}
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ch1 := walk(os.Args[1])
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ch2 := walk(os.Args[2])
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changes := false
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var a, b *entry
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for {
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var ok bool
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if ch1 != nil && a == nil {
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a, ok = <-ch1
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if !ok {
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ch1 = nil
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}
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}
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if ch2 != nil && b == nil {
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b, ok = <-ch2
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if !ok {
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ch2 = nil
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}
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}
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if ch1 == nil && ch2 == nil {
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break
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}
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if ch1 == nil {
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fmt.Printf("+%v\n", b.path)
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changes = true
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} else if ch2 == nil {
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fmt.Printf("-%v\n", a.path)
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changes = true
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} else if !a.equals(b) {
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if a.path < b.path {
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fmt.Printf("-%v\n", a.path)
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changes = true
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a = nil
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continue
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} else if a.path > b.path {
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fmt.Printf("+%v\n", b.path)
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changes = true
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b = nil
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continue
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} else {
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fmt.Printf("%%%v\n", a.path)
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changes = true
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}
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}
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a, b = nil, nil
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}
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if changes {
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os.Exit(1)
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}
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}
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