First pass at file hashing for a package

cli/internal/ffi/bindings.h

@@ -18,6 +18,8 @@ struct Buffer previous_content(struct Buffer buffer);
 
 struct Buffer recursive_copy(struct Buffer buffer);
 
+struct Buffer get_package_file_hashes_from_git_index(struct Buffer buffer);
+
 struct Buffer transitive_closure(struct Buffer buf);
 
 struct Buffer subgraph(struct Buffer buf);

cli/internal/ffi/ffi.go

@@ -313,3 +313,26 @@ func GlobalChange(packageManager string, prevContents []byte, currContents []byt
 
 	return resp.GetGlobalChange()
 }
+
+// GetPackageFileHashesFromGitIndex proxies to rust to use git to hash the files in a package.
+// It does not support additional files, it just hashes the non-ignored files in the package.
+func GetPackageFileHashesFromGitIndex(rootPath string, packagePath string) (map[string]string, error) {
+	req := ffi_proto.GetPackageFileHashesFromGitIndexRequest{
+		TurboRoot:   rootPath,
+		PackagePath: packagePath,
+	}
+	reqBuf := Marshal(&req)
+	resBuf := C.get_package_file_hashes_from_git_index(reqBuf)
+	reqBuf.Free()
+
+	resp := ffi_proto.GetPackageFileHashesFromGitIndexResponse{}
+	if err := Unmarshal(resBuf, resp.ProtoReflect().Interface()); err != nil {
+		panic(err)
+	}
+
+	if err := resp.GetError(); err != "" {
+		return nil, errors.New(err)
+	}
+	hashes := resp.GetHashes()
+	return hashes.GetHashes(), nil
+}

cli/internal/hashing/package_deps_hash.go

@@ -28,48 +28,6 @@ type PackageDepsOptions struct {
 	InputPatterns []string
 }
 
-func getPackageFileHashesFromGitIndex(rootPath turbopath.AbsoluteSystemPath, packagePath turbopath.AnchoredSystemPath) (map[turbopath.AnchoredUnixPath]string, error) {
-	var result map[turbopath.AnchoredUnixPath]string
-	absolutePackagePath := packagePath.RestoreAnchor(rootPath)
-
-	// Get the state of the git index.
-	gitLsTreeOutput, err := gitLsTree(absolutePackagePath)
-	if err != nil {
-		return nil, fmt.Errorf("could not get git hashes for files in package %s: %w", packagePath, err)
-	}
-	result = gitLsTreeOutput
-
-	// Update the with the state of the working directory.
-	// The paths returned from this call are anchored at the package directory
-	gitStatusOutput, err := gitStatus(absolutePackagePath)
-	if err != nil {
-		return nil, fmt.Errorf("Could not get git hashes from git status: %v", err)
-	}
-
-	// Review status output to identify the delta.
-	var filesToHash []turbopath.AnchoredSystemPath
-	for filePath, status := range gitStatusOutput {
-		if status.isDelete() {
-			delete(result, filePath)
-		} else {
-			filesToHash = append(filesToHash, filePath.ToSystemPath())
-		}
-	}
-
-	// Get the hashes for any modified files in the working directory.
-	hashes, err := GetHashesForFiles(absolutePackagePath, filesToHash)
-	if err != nil {
-		return nil, err
-	}
-
-	// Zip up file paths and hashes together
-	for filePath, hash := range hashes {
-		result[filePath] = hash
-	}
-
-	return result, nil
-}
-
 func safeCompileIgnoreFile(filepath turbopath.AbsoluteSystemPath) (*gitignore.GitIgnore, error) {
 	if filepath.FileExists() {
 		return gitignore.CompileIgnoreFile(filepath.ToString())
@@ -496,61 +454,3 @@ type statusCode struct {
 func (s statusCode) isDelete() bool {
 	return s.x == "D" || s.y == "D"
 }
-
-// gitStatus returns a map of paths to their `git` status code. This can be used to identify what should
-// be done with files that do not currently match what is in the index.
-//
-// Note: `git status -z`'s relative path results are relative to the repository's location.
-// We need to calculate where the repository's location is in order to determine what the full path is
-// before we can return those paths relative to the calling directory, normalizing to the behavior of
-// `ls-files` and `ls-tree`.
-func gitStatus(rootPath turbopath.AbsoluteSystemPath) (map[turbopath.AnchoredUnixPath]statusCode, error) {
-	cmd := exec.Command(
-		"git",               // Using `git` from $PATH,
-		"status",            // tell me about the status of the working tree,
-		"--untracked-files", // including information about untracked files,
-		"--no-renames",      // do not detect renames,
-		"-z",                // with each file path relative to the repository root and \000-terminated,
-		"--",                // and any additional argument you see is a path, promise.
-	)
-	cmd.Args = append(cmd.Args, ".") // Operate in the current directory instead of the root of the working tree.
-	cmd.Dir = rootPath.ToString()    // Include files only from this directory.
-
-	entries, err := runGitCommand(cmd, "status", gitoutput.NewStatusReader)
-	if err != nil {
-		return nil, err
-	}
-
-	output := make(map[turbopath.AnchoredUnixPath]statusCode, len(entries))
-	convertedRootPath := turbopath.AbsoluteSystemPathFromUpstream(rootPath.ToString())
-
-	traversePath, err := memoizedGetTraversePath(convertedRootPath)
-	if err != nil {
-		return nil, err
-	}
-
-	for _, entry := range entries {
-		statusEntry := gitoutput.StatusEntry(entry)
-		// Anchored at repository.
-		pathFromStatus := turbopath.AnchoredUnixPathFromUpstream(statusEntry.GetField(gitoutput.Path))
-		var outputPath turbopath.AnchoredUnixPath
-
-		if len(traversePath) > 0 {
-			repositoryPath := convertedRootPath.Join(traversePath.ToSystemPath())
-			fileFullPath := pathFromStatus.ToSystemPath().RestoreAnchor(repositoryPath)
-
-			relativePath, err := fileFullPath.RelativeTo(convertedRootPath)
-			if err != nil {
-				return nil, err
-			}
-
-			outputPath = relativePath.ToUnixPath()
-		} else {
-			outputPath = pathFromStatus
-		}
-
-		output[outputPath] = statusCode{x: statusEntry.GetField(gitoutput.StatusX), y: statusEntry.GetField(gitoutput.StatusY)}
-	}
-
-	return output, nil
-}

cli/internal/hashing/package_deps_hash_go.go

@@ -0,0 +1,112 @@
+//go:build go || !rust
+// +build go !rust
+
+package hashing
+
+import (
+	"fmt"
+	"os/exec"
+
+	"github.com/vercel/turbo/cli/internal/encoding/gitoutput"
+	"github.com/vercel/turbo/cli/internal/turbopath"
+)
+
+func getPackageFileHashesFromGitIndex(rootPath turbopath.AbsoluteSystemPath, packagePath turbopath.AnchoredSystemPath) (map[turbopath.AnchoredUnixPath]string, error) {
+	var result map[turbopath.AnchoredUnixPath]string
+	absolutePackagePath := packagePath.RestoreAnchor(rootPath)
+
+	// Get the state of the git index.
+	gitLsTreeOutput, err := gitLsTree(absolutePackagePath)
+	if err != nil {
+		return nil, fmt.Errorf("could not get git hashes for files in package %s: %w", packagePath, err)
+	}
+	result = gitLsTreeOutput
+
+	// Update the with the state of the working directory.
+	// The paths returned from this call are anchored at the package directory
+	gitStatusOutput, err := gitStatus(absolutePackagePath)
+	if err != nil {
+		return nil, fmt.Errorf("Could not get git hashes from git status: %v", err)
+	}
+
+	// Review status output to identify the delta.
+	var filesToHash []turbopath.AnchoredSystemPath
+	for filePath, status := range gitStatusOutput {
+		if status.isDelete() {
+			delete(result, filePath)
+		} else {
+			filesToHash = append(filesToHash, filePath.ToSystemPath())
+		}
+	}
+
+	// Get the hashes for any modified files in the working directory.
+	hashes, err := GetHashesForFiles(absolutePackagePath, filesToHash)
+	if err != nil {
+		return nil, err
+	}
+
+	// Zip up file paths and hashes together
+	for filePath, hash := range hashes {
+		result[filePath] = hash
+	}
+
+	return result, nil
+}
+
+// gitStatus returns a map of paths to their `git` status code. This can be used to identify what should
+// be done with files that do not currently match what is in the index.
+//
+// Note: `git status -z`'s relative path results are relative to the repository's location.
+// We need to calculate where the repository's location is in order to determine what the full path is
+// before we can return those paths relative to the calling directory, normalizing to the behavior of
+// `ls-files` and `ls-tree`.
+func gitStatus(rootPath turbopath.AbsoluteSystemPath) (map[turbopath.AnchoredUnixPath]statusCode, error) {
+	cmd := exec.Command(
+		"git",               // Using `git` from $PATH,
+		"status",            // tell me about the status of the working tree,
+		"--untracked-files", // including information about untracked files,
+		"--no-renames",      // do not detect renames,
+		"-z",                // with each file path relative to the repository root and \000-terminated,
+		"--",                // and any additional argument you see is a path, promise.
+	)
+	cmd.Args = append(cmd.Args, ".") // Operate in the current directory instead of the root of the working tree.
+	cmd.Dir = rootPath.ToString()    // Include files only from this directory.
+
+	entries, err := runGitCommand(cmd, "status", gitoutput.NewStatusReader)
+	if err != nil {
+		return nil, err
+	}
+
+	output := make(map[turbopath.AnchoredUnixPath]statusCode, len(entries))
+	convertedRootPath := turbopath.AbsoluteSystemPathFromUpstream(rootPath.ToString())
+
+	traversePath, err := memoizedGetTraversePath(convertedRootPath)
+	if err != nil {
+		return nil, err
+	}
+
+	for _, entry := range entries {
+		statusEntry := gitoutput.StatusEntry(entry)
+		// Anchored at repository.
+		pathFromStatus := turbopath.AnchoredUnixPathFromUpstream(statusEntry.GetField(gitoutput.Path))
+		var outputPath turbopath.AnchoredUnixPath
+
+		if len(traversePath) > 0 {
+			repositoryPath := convertedRootPath.Join(traversePath.ToSystemPath())
+			fileFullPath := pathFromStatus.ToSystemPath().RestoreAnchor(repositoryPath)
+
+			relativePath, err := fileFullPath.RelativeTo(convertedRootPath)
+			if err != nil {
+				return nil, err
+			}
+
+			outputPath = relativePath.ToUnixPath()
+		} else {
+			outputPath = pathFromStatus
+		}
+
+		output[outputPath] = statusCode{x: statusEntry.GetField(gitoutput.StatusX), y: statusEntry.GetField(gitoutput.StatusY)}
+	}
+
+	return output, nil
+}

cli/internal/hashing/package_deps_hash_rust.go

@@ -0,0 +1,22 @@
+//go:build rust
+// +build rust
+
+package hashing
+
+import (
+	"github.com/vercel/turbo/cli/internal/ffi"
+	"github.com/vercel/turbo/cli/internal/turbopath"
+)
+
+func getPackageFileHashesFromGitIndex(rootPath turbopath.AbsoluteSystemPath, packagePath turbopath.AnchoredSystemPath) (map[turbopath.AnchoredUnixPath]string, error) {
+	rawHashes, err := ffi.GetPackageFileHashesFromGitIndex(rootPath.ToString(), packagePath.ToString())
+	if err != nil {
+		return nil, err
+	}
+
+	hashes := make(map[turbopath.AnchoredUnixPath]string, len(rawHashes))
+	for rawPath, hash := range rawHashes {
+		hashes[turbopath.AnchoredUnixPathFromUpstream(rawPath)] = hash
+	}
+	return hashes, nil
+}

crates/turbopath/Cargo.toml

@@ -7,6 +7,7 @@ edition = "2021"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
+bstr = "1.4.0"
 path-slash = "0.2.1"
 # TODO: Make this a crate feature
 serde = { workspace = true }

crates/turbopath/src/absolute_system_path_buf.rs

@@ -163,6 +163,14 @@ impl AbsoluteSystemPathBuf {
         AbsoluteSystemPathBuf(self.0.join(Path::new(segment)))
     }
 
+    pub fn join_unix_path_literal<S: AsRef<str>>(
+        &self,
+        unix_path: S,
+    ) -> Result<AbsoluteSystemPathBuf, PathError> {
+        let tail = Path::new(unix_path.as_ref()).into_system()?;
+        Ok(AbsoluteSystemPathBuf(self.0.join(tail)))
+    }
+
     pub fn ensure_dir(&self) -> Result<(), io::Error> {
         if let Some(parent) = self.0.parent() {
             fs::create_dir_all(parent)
@@ -171,6 +179,10 @@ impl AbsoluteSystemPathBuf {
         }
     }
 
+    pub fn create_dir_all(&self) -> Result<(), io::Error> {
+        fs::create_dir_all(self.0.as_path())
+    }
+
     pub fn remove(&self) -> Result<(), io::Error> {
         fs::remove_file(self.0.as_path())
     }
@@ -245,6 +257,11 @@ impl AbsoluteSystemPathBuf {
     pub fn open(&self) -> Result<fs::File, PathError> {
         Ok(fs::File::open(&self.0)?)
     }
+
+    pub fn to_realpath(&self) -> Result<Self, PathError> {
+        let realpath = fs::canonicalize(&self.0)?;
+        Ok(Self(realpath))
+    }
 }
 
 impl From<AbsoluteSystemPathBuf> for PathBuf {