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|
package main
import (
"io"
"log"
"os"
"path/filepath"
"strings"
ignore "github.com/sabhiram/go-gitignore"
)
type FileMeta struct {
Size int64
Mode os.FileMode
Symlink string
}
type Manifest struct {
Files map[string]FileMeta
}
func initialSync(hostDir, dataDir string, rules *ignore.GitIgnore, dryRun bool) (*Manifest, error) {
manifest := &Manifest{Files: make(map[string]FileMeta)}
err := filepath.Walk(hostDir, func(path string, info os.FileInfo, err error) error {
if err != nil {
return err
}
relPath, err := filepath.Rel(hostDir, path)
if err != nil {
return err
}
if relPath == "." {
return nil
}
if relPath == ".git" || strings.HasPrefix(relPath, ".git"+string(filepath.Separator)) {
return filepath.SkipDir
}
if rules.MatchesPath(relPath) {
if info.IsDir() {
return filepath.SkipDir
}
return nil
}
destPath := filepath.Join(dataDir, relPath)
linkTarget := ""
if info.Mode()&os.ModeSymlink != 0 {
linkTarget, err = os.Readlink(path)
if err != nil {
return err
}
}
meta := FileMeta{
Size: info.Size(),
Mode: info.Mode(),
Symlink: linkTarget,
}
manifest.Files[relPath] = meta
if dryRun {
log.Printf("[dry-run] would sync: %s", relPath)
return nil
}
if info.IsDir() {
return os.MkdirAll(destPath, info.Mode())
}
if err := os.MkdirAll(filepath.Dir(destPath), 0755); err != nil {
return err
}
if linkTarget != "" {
return os.Symlink(linkTarget, destPath)
}
return copyFile(path, destPath, info.Mode())
})
return manifest, err
}
func copyFile(src, dst string, mode os.FileMode) error {
srcFile, err := os.Open(src)
if err != nil {
return err
}
defer srcFile.Close()
dstFile, err := os.OpenFile(dst, os.O_CREATE|os.O_WRONLY|os.O_TRUNC, mode)
if err != nil {
return err
}
defer dstFile.Close()
_, err = io.Copy(dstFile, srcFile)
return err
}
|
