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lazygit/pkg/commands/files.go
2020-10-02 08:09:42 +10:00

265 lines
8.0 KiB
Go

package commands
import (
"fmt"
"path/filepath"
"strings"
"time"
"github.com/go-errors/errors"
"github.com/jesseduffield/lazygit/pkg/commands/models"
"github.com/jesseduffield/lazygit/pkg/utils"
)
// CatFile obtains the content of a file
func (c *GitCommand) CatFile(fileName string) (string, error) {
return c.OSCommand.RunCommandWithOutput("%s %s", c.OSCommand.Platform.CatCmd, c.OSCommand.Quote(fileName))
}
// StageFile stages a file
func (c *GitCommand) StageFile(fileName string) error {
// renamed files look like "file1 -> file2"
fileNames := strings.Split(fileName, " -> ")
return c.OSCommand.RunCommand("git add %s", c.OSCommand.Quote(fileNames[len(fileNames)-1]))
}
// StageAll stages all files
func (c *GitCommand) StageAll() error {
return c.OSCommand.RunCommand("git add -A")
}
// UnstageAll stages all files
func (c *GitCommand) UnstageAll() error {
return c.OSCommand.RunCommand("git reset")
}
// UnStageFile unstages a file
func (c *GitCommand) UnStageFile(fileName string, tracked bool) error {
command := "git rm --cached --force %s"
if tracked {
command = "git reset HEAD %s"
}
// renamed files look like "file1 -> file2"
fileNames := strings.Split(fileName, " -> ")
for _, name := range fileNames {
if err := c.OSCommand.RunCommand(command, c.OSCommand.Quote(name)); err != nil {
return err
}
}
return nil
}
func (c *GitCommand) BeforeAndAfterFileForRename(file *models.File) (*models.File, *models.File, error) {
if !file.IsRename() {
return nil, nil, errors.New("Expected renamed file")
}
// we've got a file that represents a rename from one file to another. Unfortunately
// our File abstraction fails to consider this case, so here we will refetch
// all files, passing the --no-renames flag and then recursively call the function
// again for the before file and after file. At some point we should fix the abstraction itself
split := strings.Split(file.Name, " -> ")
filesWithoutRenames := c.GetStatusFiles(GetStatusFileOptions{NoRenames: true})
var beforeFile *models.File
var afterFile *models.File
for _, f := range filesWithoutRenames {
if f.Name == split[0] {
beforeFile = f
}
if f.Name == split[1] {
afterFile = f
}
}
if beforeFile == nil || afterFile == nil {
return nil, nil, errors.New("Could not find deleted file or new file for file rename")
}
if beforeFile.IsRename() || afterFile.IsRename() {
// probably won't happen but we want to ensure we don't get an infinite loop
return nil, nil, errors.New("Nested rename found")
}
return beforeFile, afterFile, nil
}
// DiscardAllFileChanges directly
func (c *GitCommand) DiscardAllFileChanges(file *models.File) error {
if file.IsRename() {
beforeFile, afterFile, err := c.BeforeAndAfterFileForRename(file)
if err != nil {
return err
}
if err := c.DiscardAllFileChanges(beforeFile); err != nil {
return err
}
if err := c.DiscardAllFileChanges(afterFile); err != nil {
return err
}
return nil
}
// if the file isn't tracked, we assume you want to delete it
quotedFileName := c.OSCommand.Quote(file.Name)
if file.HasStagedChanges || file.HasMergeConflicts {
if err := c.OSCommand.RunCommand("git reset -- %s", quotedFileName); err != nil {
return err
}
}
if !file.Tracked {
return c.removeFile(file.Name)
}
return c.DiscardUnstagedFileChanges(file)
}
// DiscardUnstagedFileChanges directly
func (c *GitCommand) DiscardUnstagedFileChanges(file *models.File) error {
quotedFileName := c.OSCommand.Quote(file.Name)
return c.OSCommand.RunCommand("git checkout -- %s", quotedFileName)
}
// Ignore adds a file to the gitignore for the repo
func (c *GitCommand) Ignore(filename string) error {
return c.OSCommand.AppendLineToFile(".gitignore", filename)
}
// WorktreeFileDiff returns the diff of a file
func (c *GitCommand) WorktreeFileDiff(file *models.File, plain bool, cached bool) string {
// for now we assume an error means the file was deleted
s, _ := c.OSCommand.RunCommandWithOutput(c.WorktreeFileDiffCmdStr(file, plain, cached))
return s
}
func (c *GitCommand) WorktreeFileDiffCmdStr(file *models.File, plain bool, cached bool) string {
cachedArg := ""
trackedArg := "--"
colorArg := c.colorArg()
split := strings.Split(file.Name, " -> ") // in case of a renamed file we get the new filename
fileName := c.OSCommand.Quote(split[len(split)-1])
if cached {
cachedArg = "--cached"
}
if !file.Tracked && !file.HasStagedChanges && !cached {
trackedArg = "--no-index /dev/null"
}
if plain {
colorArg = "never"
}
return fmt.Sprintf("git diff --submodule --no-ext-diff --color=%s %s %s %s", colorArg, cachedArg, trackedArg, fileName)
}
func (c *GitCommand) ApplyPatch(patch string, flags ...string) error {
filepath := filepath.Join(c.Config.GetUserConfigDir(), utils.GetCurrentRepoName(), time.Now().Format("Jan _2 15.04.05.000000000")+".patch")
c.Log.Infof("saving temporary patch to %s", filepath)
if err := c.OSCommand.CreateFileWithContent(filepath, patch); err != nil {
return err
}
flagStr := ""
for _, flag := range flags {
flagStr += " --" + flag
}
return c.OSCommand.RunCommand("git apply %s %s", flagStr, c.OSCommand.Quote(filepath))
}
// ShowFileDiff get the diff of specified from and to. Typically this will be used for a single commit so it'll be 123abc^..123abc
// but when we're in diff mode it could be any 'from' to any 'to'. The reverse flag is also here thanks to diff mode.
func (c *GitCommand) ShowFileDiff(from string, to string, reverse bool, fileName string, plain bool) (string, error) {
cmdStr := c.ShowFileDiffCmdStr(from, to, reverse, fileName, plain)
return c.OSCommand.RunCommandWithOutput(cmdStr)
}
func (c *GitCommand) ShowFileDiffCmdStr(from string, to string, reverse bool, fileName string, plain bool) string {
colorArg := c.colorArg()
if plain {
colorArg = "never"
}
reverseFlag := ""
if reverse {
reverseFlag = " -R "
}
return fmt.Sprintf("git diff --submodule --no-ext-diff --no-renames --color=%s %s %s %s -- %s", colorArg, from, to, reverseFlag, fileName)
}
// CheckoutFile checks out the file for the given commit
func (c *GitCommand) CheckoutFile(commitSha, fileName string) error {
return c.OSCommand.RunCommand("git checkout %s %s", commitSha, fileName)
}
// DiscardOldFileChanges discards changes to a file from an old commit
func (c *GitCommand) DiscardOldFileChanges(commits []*models.Commit, commitIndex int, fileName string) error {
if err := c.BeginInteractiveRebaseForCommit(commits, commitIndex); err != nil {
return err
}
// check if file exists in previous commit (this command returns an error if the file doesn't exist)
if err := c.OSCommand.RunCommand("git cat-file -e HEAD^:%s", fileName); err != nil {
if err := c.OSCommand.Remove(fileName); err != nil {
return err
}
if err := c.StageFile(fileName); err != nil {
return err
}
} else if err := c.CheckoutFile("HEAD^", fileName); err != nil {
return err
}
// amend the commit
cmd, err := c.AmendHead()
if cmd != nil {
return errors.New("received unexpected pointer to cmd")
}
if err != nil {
return err
}
// continue
return c.GenericMergeOrRebaseAction("rebase", "continue")
}
// DiscardAnyUnstagedFileChanges discards any unstages file changes via `git checkout -- .`
func (c *GitCommand) DiscardAnyUnstagedFileChanges() error {
return c.OSCommand.RunCommand("git checkout -- .")
}
// RemoveTrackedFiles will delete the given file(s) even if they are currently tracked
func (c *GitCommand) RemoveTrackedFiles(name string) error {
return c.OSCommand.RunCommand("git rm -r --cached %s", name)
}
// RemoveUntrackedFiles runs `git clean -fd`
func (c *GitCommand) RemoveUntrackedFiles() error {
return c.OSCommand.RunCommand("git clean -fd")
}
// ResetAndClean removes all unstaged changes and removes all untracked files
func (c *GitCommand) ResetAndClean() error {
submoduleConfigs, err := c.GetSubmoduleConfigs()
if err != nil {
return err
}
if len(submoduleConfigs) > 0 {
if err := c.ResetSubmodules(submoduleConfigs); err != nil {
return err
}
}
if err := c.ResetHard("HEAD"); err != nil {
return err
}
return c.RemoveUntrackedFiles()
}