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refactor(revparse)!: add ability to get different git objects based on spec (#46)

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Aleksey Kulikov 2022-02-19 12:42:19 +03:00 • committed by GitHub
parent e83d6ab29a
commit d0f7746a01
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3 changed files with 48 additions and 19 deletions
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34
lib/src/revparse.dart
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@ -1,6 +1,7 @@
import 'dart:ffi';
import 'package:libgit2dart/libgit2dart.dart';
import 'package:libgit2dart/src/bindings/libgit2_bindings.dart';
import 'package:libgit2dart/src/bindings/object.dart' as object_bindings;
import 'package:libgit2dart/src/bindings/revparse.dart' as bindings;
class RevParse {
@ -40,18 +41,35 @@ class RevParse {
/// See `man gitrevisions`, or https://git-scm.com/docs/git-rev-parse.html#_specifying_revisions
/// for information on the syntax accepted.
///
/// Returned object should be explicitly downcasted to one of four of git
/// object types.
///
/// ```dart
/// final commit = RevParse.single(repo: repo, spec: 'HEAD') as Commit;
/// final tree = RevParse.single(repo: repo, spec: 'HEAD^{tree}') as Tree;
/// final blob = RevParse.single(repo: repo, spec: 'HEAD:file.txt') as Blob;
/// final tag = RevParse.single(repo: repo, spec: 'v1.0') as Tag;
/// ```
///
/// **IMPORTANT**: Should be freed to release allocated memory.
///
/// Throws a [LibGit2Error] if error occured.
static Commit single({required Repository repo, required String spec}) {
return Commit(
bindings
.revParseSingle(
repoPointer: repo.pointer,
spec: spec,
)
.cast(),
static Object single({required Repository repo, required String spec}) {
final object = bindings.revParseSingle(
repoPointer: repo.pointer,
spec: spec,
);
final objectType = object_bindings.type(object);
if (objectType == GitObject.commit.value) {
return Commit(object.cast());
} else if (objectType == GitObject.tree.value) {
return Tree(object.cast());
} else if (objectType == GitObject.blob.value) {
return Blob(object.cast());
} else {
return Tag(object.cast());
}
}
/// Parses a revision string for from, to, and intent.