// Revert implements got revert
func Revert(c *cli.Context) {
// Open the database
db := util.OpenDB()
defer db.Close()
// Perform operations in a read-only lock
err := db.View(func(tx *bolt.Tx) error {
// Get the current commit sha
info := tx.Bucket(util.INFO)
objects := tx.Bucket(util.OBJECTS)
current := info.Get(util.CURRENT)
// Get the commit object and associated tree
commit := types.DeserializeCommitObject(objects.Get(current))
tree := types.DeserializeTreeObject(objects.Get(commit.Tree))
for _, file := range c.Args() {
fmt.Println("Reverting " + file + "...")
fileData := TreeLookup(objects, tree, path.Clean(file))
ioutil.WriteFile(file, fileData, 0644)
}
return nil
})
if err != nil {
log.Fatal("Error reading from the database.")
}
}
func GetNewestCommit(objects *bolt.Bucket, hashes []types.Hash) int {
var newest *newestCommit = nil
for i, hash := range hashes {
commit := types.DeserializeCommitObject(objects.Get(hash))
if newest == nil || commit.Time.After(newest.Time) {
newest = new(newestCommit)
newest.Index = i
newest.Time = commit.Time
}
}
return newest.Index
}
// Status implements the `got status` command.
func Status(c *cli.Context) {
// Open the database
db := util.OpenDB()
defer db.Close()
// Colored output
yellow := ansi.ColorFunc("yellow+h:black")
green := ansi.ColorFunc("green+h:black")
red := ansi.ColorFunc("red+h:black")
// Perform operations in a read-only lock
err := db.View(func(tx *bolt.Tx) error {
// Get the current commit sha
info := tx.Bucket(util.INFO)
objects := tx.Bucket(util.OBJECTS)
current := info.Get(util.CURRENT)
// Find the differences between the working directory and the tree of the current commit.
differences := []Difference{}
if current != nil {
// Load commit object
commit := types.DeserializeCommitObject(objects.Get(current))
util.DebugLog("Comparing working directory to commit '" + commit.Message + "'.")
differences = TreeDiff(objects, commit.Tree, ".")
} else {
// Compare directory to the empty hash
util.DebugLog("Comparing working directory to empty tree.")
differences = TreeDiff(objects, types.EMPTY, ".")
}
// Print out the found differences
for _, difference := range differences {
line := fmt.Sprintf("%s %s", difference.Type, difference.FilePath)
if difference.Type == "A" {
fmt.Println(green(line))
}
if difference.Type == "R" {
fmt.Println(red(line))
}
if difference.Type == "M" {
fmt.Println(yellow(line))
}
}
return nil
})
if err != nil {
log.Fatal("Error reading from the database.")
}
}
func Log(c *cli.Context) {
db := util.OpenDB()
defer db.Close()
yellow := ansi.ColorFunc("yellow+h:black")
// Perform operations in a read-only lock
db.View(func(tx *bolt.Tx) error {
info := tx.Bucket(util.INFO)
objects := tx.Bucket(util.OBJECTS)
headsBytes := info.Get(util.HEADS)
if headsBytes != nil {
queue := types.DeserializeHashes(headsBytes)
// TODO: Keep a visited set, so we don't repeat commits
for len(queue) > 0 {
i := GetNewestCommit(objects, queue)
// Get commit and remove it from the priority queue
commitSha := queue[i]
commit := types.DeserializeCommitObject(objects.Get(commitSha))
queue = append(queue[:i], queue[i+1:]...)
fmt.Printf(yellow("commit %s\n"), commitSha)
fmt.Printf("Message: %s\n", commit.Message)
fmt.Printf("Author: %s\n", commit.Author)
fmt.Printf("Date: %s\n", commit.Time)
if len(commit.Parents) > 0 {
fmt.Printf("Parents: %s\n", commit.Parents)
}
fmt.Printf("Tree: %s\n", commit.Tree)
fmt.Println()
// Append parents of this commit to the queue
queue = append(queue, commit.Parents...)
}
return nil
}
fmt.Println("There are no commits in this repository...")
return nil
})
}
