git-lfs/commands/command_clean.go
2015-05-13 13:43:41 -06:00

87 lines
1.7 KiB
Go

package commands
import (
"os"
"github.com/github/git-lfs/lfs"
"github.com/spf13/cobra"
)
var (
cleanCmd = &cobra.Command{
Use: "clean",
Short: "Implements the Git clean filter",
Run: cleanCommand,
}
)
func cleanCommand(cmd *cobra.Command, args []string) {
requireStdin("This command should be run by the Git 'clean' filter")
lfs.InstallHooks(false)
var filename string
var cb lfs.CopyCallback
var file *os.File
var fileSize int64
if len(args) > 0 {
filename = args[0]
stat, err := os.Stat(filename)
if err == nil && stat != nil {
fileSize = stat.Size()
localCb, localFile, err := lfs.CopyCallbackFile("clean", filename, 1, 1)
if err != nil {
Error(err.Error())
} else {
cb = localCb
file = localFile
}
}
}
cleaned, err := lfs.PointerClean(os.Stdin, fileSize, cb)
if file != nil {
file.Close()
}
if cleaned != nil {
cleaned.Close()
defer cleaned.Teardown()
}
if cpErr, ok := err.(*lfs.CleanedPointerError); ok {
os.Stdout.Write(cpErr.Bytes)
return
}
if err != nil {
Panic(err, "Error cleaning asset.")
}
tmpfile := cleaned.File.Name()
mediafile, err := lfs.LocalMediaPath(cleaned.Oid)
if err != nil {
Panic(err, "Unable to get local media path.")
}
if stat, _ := os.Stat(mediafile); stat != nil {
if stat.Size() != cleaned.Size {
Exit("Files don't match:\n%s\n%s", mediafile, tmpfile)
}
Debug("%s exists", mediafile)
} else {
if err := os.Rename(tmpfile, mediafile); err != nil {
Panic(err, "Unable to move %s to %s\n", tmpfile, mediafile)
}
Debug("Writing %s", mediafile)
}
lfs.EncodePointer(os.Stdout, cleaned.Pointer)
}
func init() {
RootCmd.AddCommand(cleanCmd)
}