102 lines
3.0 KiB
Go
102 lines
3.0 KiB
Go
package gitcmd
|
|
|
|
import (
|
|
"errors"
|
|
"fmt"
|
|
"os"
|
|
"os/exec"
|
|
"path/filepath"
|
|
"strings"
|
|
)
|
|
|
|
func (r *Repository) tempWorkingClone(branch string) (temp string, cleanup func(), err error) {
|
|
dir, err := os.MkdirTemp("", "simplegit-temprepo-*")
|
|
if err != nil {
|
|
return "", nil, err
|
|
}
|
|
temp = filepath.Join(dir, "repo")
|
|
cleanup = func() { _ = os.RemoveAll(dir) }
|
|
cmd := NewCommand("clone", "--shared").AddOptionValues("-b", branch).AddDynamicArguments(r.Path, temp)
|
|
if _, _, err := cmd.RunStdString(r.ctx); err != nil {
|
|
cleanup()
|
|
return "", nil, fmt.Errorf("temp clone: %w", err)
|
|
}
|
|
return temp, cleanup, nil
|
|
}
|
|
|
|
func (r *Repository) unmergedPaths(dir string) ([]string, error) {
|
|
out, _, err := NewCommand("diff", "--name-only", "--diff-filter=U").WithDir(dir).RunStdString(r.ctx)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
var paths []string
|
|
for _, l := range strings.Split(out, "\n") {
|
|
if l = strings.TrimSpace(l); l != "" {
|
|
paths = append(paths, l)
|
|
}
|
|
}
|
|
return paths, nil
|
|
}
|
|
|
|
func (r *Repository) MergeViaTempRepo(base, head, message, authorName, authorEmail string, noFF bool) (*MergeResult, error) {
|
|
baseSHA, err := r.refSHA("refs/heads/" + base)
|
|
if err != nil || baseSHA == "" {
|
|
return nil, fmt.Errorf("base branch %q not found", base)
|
|
}
|
|
headSHA, err := r.refSHA("refs/heads/" + head)
|
|
if err != nil || headSHA == "" {
|
|
return nil, fmt.Errorf("head branch %q not found", head)
|
|
}
|
|
|
|
temp, cleanup, err := r.tempWorkingClone(base)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
defer cleanup()
|
|
|
|
if !noFF && r.isAncestor(baseSHA, headSHA) {
|
|
if _, _, err := NewCommand("merge", "--ff-only").AddDynamicArguments(headSHA).WithDir(temp).RunStdString(r.ctx); err != nil {
|
|
return nil, fmt.Errorf("merge --ff-only: %w", err)
|
|
}
|
|
if err := r.pushBack(temp, base, headSHA, baseSHA); err != nil {
|
|
return nil, err
|
|
}
|
|
hc, err := r.GetCommit(headSHA)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &MergeResult{Base: base, Head: head, MergeCommit: hc, FastForward: true}, nil
|
|
}
|
|
|
|
_, _, mergeErr := NewCommand("merge", "--no-ff", "--no-commit").
|
|
AddDynamicArguments(headSHA).WithDir(temp).RunStdString(r.ctx)
|
|
if mergeErr != nil {
|
|
|
|
var exitErr *exec.ExitError
|
|
if !errors.As(mergeErr, &exitErr) {
|
|
return nil, fmt.Errorf("merge: %w", mergeErr)
|
|
}
|
|
conflicts, _ := r.unmergedPaths(temp)
|
|
_, _, _ = NewCommand("merge", "--abort").WithDir(temp).RunStdString(r.ctx)
|
|
return &MergeResult{Base: base, Head: head, Conflicts: conflicts}, nil
|
|
}
|
|
|
|
treeOut, _, err := NewCommand("write-tree").WithDir(temp).RunStdString(r.ctx)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("write-tree: %w", err)
|
|
}
|
|
mergedTree := strings.TrimSpace(treeOut)
|
|
commitSHA, err := r.commitTree(mergedTree, message, authorName, authorEmail, temp, baseSHA, headSHA)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
if err := r.pushBack(temp, base, commitSHA, baseSHA); err != nil {
|
|
return nil, err
|
|
}
|
|
mc, err := r.GetCommit(commitSHA)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &MergeResult{Base: base, Head: head, MergeCommit: mc}, nil
|
|
}
|