s

2026-07-15 11:06:48 -04:00
commit c746f88bbe
69 changed files with 14975 additions and 0 deletions
@@ -0,0 +1,134 @@
+package gitcmd
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+type FileCommitResult struct {
+	Commit Commit `json:"commit"`
+}
+
+func (r *Repository) CreateOrUpdateFile(branch, path, content, message, authorName, authorEmail, expectedSHA string) (*FileCommitResult, error) {
+	parent, err := r.refSHA("refs/heads/" + branch)
+	if err != nil {
+		return nil, err
+	}
+	if parent == "" && expectedSHA != "" {
+		return nil, fmt.Errorf("branch %q does not exist but expectedSHA %s given", branch, expectedSHA)
+	}
+	if parent != "" && expectedSHA != "" && parent != expectedSHA {
+		return nil, fmt.Errorf("branch %q moved: expected %s, current %s", branch, expectedSHA, parent)
+	}
+
+	blobSHA, err := r.hashObject(content, r.Path)
+	if err != nil {
+		return nil, err
+	}
+
+	newTree, err := r.withTempIndex(func(idx string) (string, error) {
+		return r.buildTree(idx, parent, path, blobSHA, false)
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	var parents []string
+	if parent != "" {
+		parents = []string{parent}
+	}
+	commitSHA, err := r.commitTree(newTree, message, authorName, authorEmail, r.Path, parents...)
+	if err != nil {
+		return nil, err
+	}
+	if err := r.updateRef("refs/heads/"+branch, commitSHA, expectedSHA); err != nil {
+		return nil, err
+	}
+	commit, err := r.GetCommit(commitSHA)
+	if err != nil {
+		return nil, err
+	}
+	return &FileCommitResult{Commit: *commit}, nil
+}
+
+func (r *Repository) DeleteFile(branch, path, message, authorName, authorEmail, expectedSHA string) (*FileCommitResult, error) {
+	parent, err := r.refSHA("refs/heads/" + branch)
+	if err != nil {
+		return nil, err
+	}
+	if parent == "" {
+		return nil, fmt.Errorf("branch %q is empty; nothing to delete", branch)
+	}
+	if expectedSHA != "" && parent != expectedSHA {
+		return nil, fmt.Errorf("branch %q moved: expected %s, current %s", branch, expectedSHA, parent)
+	}
+
+	newTree, err := r.withTempIndex(func(idx string) (string, error) {
+		return r.buildTree(idx, parent, path, "", true)
+	})
+	if err != nil {
+		return nil, err
+	}
+
+	commitSHA, err := r.commitTree(newTree, message, authorName, authorEmail, r.Path, parent)
+	if err != nil {
+		return nil, err
+	}
+	if err := r.updateRef("refs/heads/"+branch, commitSHA, expectedSHA); err != nil {
+		return nil, err
+	}
+	commit, err := r.GetCommit(commitSHA)
+	if err != nil {
+		return nil, err
+	}
+	return &FileCommitResult{Commit: *commit}, nil
+}
+
+func (r *Repository) withTempIndex(fn func(idx string) (string, error)) (string, error) {
+	f, err := os.CreateTemp("", "simplegit-index-*")
+	if err != nil {
+		return "", err
+	}
+	name := f.Name()
+	f.Close()
+
+	_ = os.Remove(name)
+	defer os.Remove(name)
+	return fn(name)
+}
+
+func (r *Repository) buildTree(indexFile, parent, path, blobSHA string, remove bool) (string, error) {
+	env := "GIT_INDEX_FILE=" + indexFile
+
+	if parent != "" {
+		if _, _, err := NewCommand("read-tree").
+			AddDynamicArguments(parent).
+			WithDir(r.Path).WithEnv(env).
+			RunStdString(r.ctx); err != nil {
+			return "", fmt.Errorf("read-tree: %w", err)
+		}
+	}
+
+	if remove {
+		if err := r.removePathFromIndex(r.Path, path, env); err != nil {
+			return "", err
+		}
+	} else {
+
+		if _, _, err := NewCommand("update-index", "--add", "--replace", "--cacheinfo").
+			AddDynamicArguments("100644," + blobSHA + "," + path).
+			WithDir(r.Path).WithEnv(env).
+			RunStdString(r.ctx); err != nil {
+			return "", fmt.Errorf("update-index --cacheinfo: %w", err)
+		}
+	}
+
+	out, _, err := NewCommand("write-tree").
+		WithDir(r.Path).WithEnv(env).
+		RunStdString(r.ctx)
+	if err != nil {
+		return "", fmt.Errorf("write-tree: %w", err)
+	}
+	return strings.TrimSpace(out), nil
+}