server/admin/sync/importer_localfs.go

116 lines
2.7 KiB
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package sync
import (
"fmt"
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"io"
"io/ioutil"
"os"
"path"
)
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// LocalImporter implements an Importer, where files to imports are located
// inside a local directory from your filesystem.
type LocalImporter struct {
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// Base is the root directory used by the LocalImporter. It should contains all themes.
Base string
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// Symlink changes the normal file copy/concatenate behaviour to symlink/concatenate.
// If enable, your base directory must be accessible by the frontend processus as it will follow the symlink.
Symlink bool
}
func (i LocalImporter) Kind() string {
if i.Symlink {
return "local file importer (through symlink): " + i.Base
} else {
return "local file importer: " + i.Base
}
}
func (i LocalImporter) Id() *string {
return nil
}
func (i LocalImporter) Init() error {
if f, err := os.Stat(i.Base); os.IsNotExist(err) {
if err = os.Mkdir(i.Base, 0751); err != nil {
return err
}
} else if err != nil {
return err
} else if !f.IsDir() {
return fmt.Errorf("%q exists and is not a directory", i.Base)
}
return nil
}
func (i LocalImporter) Sync() error {
return nil
}
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func (i LocalImporter) Exists(filename string) bool {
_, err := os.Stat(i.toURL(filename))
return !os.IsNotExist(err)
}
func (i LocalImporter) toURL(filename string) string {
return path.Join(i.Base, filename)
}
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func (i LocalImporter) GetLocalPath(p ...string) string {
return i.toURL(path.Join(p...))
}
func (i LocalImporter) importFile(URI string, next func(string, string) (interface{}, error)) (interface{}, error) {
if i.Symlink {
dest := GetDestinationFilePath(URI, nil)
if err := os.MkdirAll(path.Dir(dest), 0751); err != nil {
return nil, err
}
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if i.Exists(URI) {
os.Symlink(i.toURL(URI), dest)
return next(dest, URI)
} else {
os.Symlink(i.toURL(URI)+"_MERGED", dest)
return ImportFile(i, URI, next)
}
} else {
return ImportFile(i, URI, next)
}
}
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func (i LocalImporter) GetFile(filename string) (io.Reader, error) {
if fd, err := os.Open(path.Join(i.Base, filename)); err != nil {
return nil, err
} else {
return fd, nil
}
}
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func (i LocalImporter) writeFile(filename string, reader io.Reader) error {
if fd, err := os.Create(path.Join(i.Base, filename)); err != nil {
return err
} else {
defer fd.Close()
io.Copy(fd, reader)
return nil
}
}
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func (i LocalImporter) ListDir(filename string) ([]string, error) {
if files, err := ioutil.ReadDir(path.Join(i.Base, filename)); err != nil {
return nil, err
} else {
res := make([]string, 0)
for _, file := range files {
res = append(res, file.Name())
}
return res, nil
}
}
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func (i LocalImporter) Stat(filename string) (os.FileInfo, error) {
return os.Stat(path.Join(i.Base, filename))
}