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feat(repository): add ability to lookup different types of git objects with []

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This commit is contained in:
Aleksey Kulikov 2021-09-04 12:04:28 +03:00
parent f19a34a768
commit 2cf974c624
14 changed files with 124 additions and 67 deletions
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44
lib/src/repository.dart
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@ -4,6 +4,7 @@ import 'package:libgit2dart/libgit2dart.dart';
import 'bindings/libgit2_bindings.dart';
import 'bindings/repository.dart' as bindings;
import 'bindings/merge.dart' as merge_bindings;
import 'bindings/object.dart' as object_bindings;
import 'commit.dart';
import 'config.dart';
import 'index.dart';
@ -273,8 +274,8 @@ class Repository {
late final Oid oid;
late final bool isDirect;
if (target.runtimeType == Oid) {
oid = target as Oid;
if (target is Oid) {
oid = target;
isDirect = true;
} else if (isValidShaHex(target as String)) {
oid = Oid.fromSHA(this, target);
@ -314,18 +315,39 @@ class Repository {
/// Throws a [LibGit2Error] if error occured.
Odb get odb => Odb(bindings.odb(_repoPointer));
/// Looksup [Commit] for provided [sha] hex string.
/// Looksup git object (commit, tree, blob, tag) for provided [sha] hex string.
///
/// Throws [ArgumentError] if provided [sha] is not valid sha hex string.
Commit operator [](String sha) {
late final Oid oid;
/// Returned object should be explicitly downcasted to one of four of git object types.
///
/// ```dart
/// final commit = repo['s0m3sh4'] as Commit;
/// final tree = repo['s0m3sh4'] as Tree;
/// final blob = repo['s0m3sh4'] as Blob;
/// final tag = repo['s0m3sh4'] as Tag;
/// ```
///
/// Throws [ArgumentError] if provided [sha] is not pointing to commit, tree, blob or tag.
Object operator [](String sha) {
final oid = Oid.fromSHA(this, sha);
final object = object_bindings.lookup(
_repoPointer,
oid.pointer,
GitObject.any.value,
);
final type = object_bindings.type(object);
if (isValidShaHex(sha)) {
oid = Oid.fromSHA(this, sha);
if (type == GitObject.commit.value) {
return Commit(object.cast());
} else if (type == GitObject.tree.value) {
return Tree(object.cast());
} else if (type == GitObject.blob.value) {
return Blob(object.cast());
} else if (type == GitObject.tag.value) {
return Tag(object.cast());
} else {
throw ArgumentError.value('$sha is not a valid sha hex string');
throw ArgumentError.value(
'$sha should be pointing to either commit, tree, blob or a tag');
}
return Commit.lookup(this, oid);
}
/// Returns the list of commits starting from provided [oid].
@ -415,7 +437,7 @@ class Repository {
Oid createTag({
required String tagName,
required Oid target,
required GitObjectType targetType,
required GitObject targetType,
required Signature tagger,
required String message,
bool force = false,