109 lines
2.5 KiB
Go
109 lines
2.5 KiB
Go
package commands
|
|
|
|
import (
|
|
"bufio"
|
|
"os"
|
|
"strings"
|
|
|
|
"github.com/git-lfs/git-lfs/git"
|
|
"github.com/rubyist/tracerx"
|
|
"github.com/spf13/cobra"
|
|
)
|
|
|
|
var (
|
|
prePushDryRun = false
|
|
prePushDeleteBranch = strings.Repeat("0", 40)
|
|
)
|
|
|
|
// prePushCommand is run through Git's pre-push hook. The pre-push hook passes
|
|
// two arguments on the command line:
|
|
//
|
|
// 1. Name of the remote to which the push is being done
|
|
// 2. URL to which the push is being done
|
|
//
|
|
// The hook receives commit information on stdin in the form:
|
|
// <local ref> <local sha1> <remote ref> <remote sha1>
|
|
//
|
|
// In the typical case, prePushCommand will get a list of git objects being
|
|
// pushed by using the following:
|
|
//
|
|
// git rev-list --objects <local sha1> ^<remote sha1>
|
|
//
|
|
// If any of those git objects are associated with Git LFS objects, those
|
|
// objects will be pushed to the Git LFS API.
|
|
//
|
|
// In the case of pushing a new branch, the list of git objects will be all of
|
|
// the git objects in this branch.
|
|
//
|
|
// In the case of deleting a branch, no attempts to push Git LFS objects will be
|
|
// made.
|
|
func prePushCommand(cmd *cobra.Command, args []string) {
|
|
if len(args) == 0 {
|
|
Print("This should be run through Git's pre-push hook. Run `git lfs update` to install it.")
|
|
os.Exit(1)
|
|
}
|
|
|
|
requireGitVersion()
|
|
|
|
// Remote is first arg
|
|
if err := git.ValidateRemote(args[0]); err != nil {
|
|
Exit("Invalid remote name %q", args[0])
|
|
}
|
|
|
|
ctx := newUploadContext(args[0], prePushDryRun)
|
|
|
|
gitscanner, err := ctx.buildGitScanner()
|
|
if err != nil {
|
|
ExitWithError(err)
|
|
}
|
|
defer gitscanner.Close()
|
|
|
|
// We can be passed multiple lines of refs
|
|
scanner := bufio.NewScanner(os.Stdin)
|
|
|
|
for scanner.Scan() {
|
|
line := strings.TrimSpace(scanner.Text())
|
|
|
|
if len(line) == 0 {
|
|
continue
|
|
}
|
|
|
|
tracerx.Printf("pre-push: %s", line)
|
|
|
|
left, _ := decodeRefs(line)
|
|
if left == prePushDeleteBranch {
|
|
continue
|
|
}
|
|
|
|
if err := uploadLeftOrAll(gitscanner, ctx, left); err != nil {
|
|
Print("Error scanning for Git LFS files in %q", left)
|
|
ExitWithError(err)
|
|
}
|
|
}
|
|
|
|
ctx.Await()
|
|
}
|
|
|
|
// decodeRefs pulls the sha1s out of the line read from the pre-push
|
|
// hook's stdin.
|
|
func decodeRefs(input string) (string, string) {
|
|
refs := strings.Split(strings.TrimSpace(input), " ")
|
|
var left, right string
|
|
|
|
if len(refs) > 1 {
|
|
left = refs[1]
|
|
}
|
|
|
|
if len(refs) > 3 {
|
|
right = "^" + refs[3]
|
|
}
|
|
|
|
return left, right
|
|
}
|
|
|
|
func init() {
|
|
RegisterCommand("pre-push", prePushCommand, func(cmd *cobra.Command) {
|
|
cmd.Flags().BoolVarP(&prePushDryRun, "dry-run", "d", false, "Do everything except actually send the updates")
|
|
})
|
|
}
|