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feat(reference): add ability to set target

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This commit is contained in:
Aleksey Kulikov 2021-08-06 16:44:50 +03:00
parent 58fa54f24a
commit 371d52b7f8
5 changed files with 147 additions and 15 deletions
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62
lib/src/bindings/reference.dart
View file

@ -163,12 +163,12 @@ Pointer<git_reference> createDirect(
String name,
Pointer<git_oid> oid,
bool force,
String logMessage,
String? logMessage,
) {
final out = calloc<Pointer<git_reference>>();
final nameC = name.toNativeUtf8().cast<Int8>();
final forceC = force == true ? 1 : 0;
final logMessageC = logMessage.toNativeUtf8().cast<Int8>();
final logMessageC = logMessage?.toNativeUtf8().cast<Int8>() ?? nullptr;
final error = libgit2.git_reference_create(
out,
repo,
@ -214,13 +214,13 @@ Pointer<git_reference> createSymbolic(
String name,
String target,
bool force,
String logMessage,
String? logMessage,
) {
final out = calloc<Pointer<git_reference>>();
final nameC = name.toNativeUtf8().cast<Int8>();
final targetC = target.toNativeUtf8().cast<Int8>();
final forceC = force == true ? 1 : 0;
final logMessageC = logMessage.toNativeUtf8().cast<Int8>();
final logMessageC = logMessage?.toNativeUtf8().cast<Int8>() ?? nullptr;
final error = libgit2.git_reference_symbolic_create(
out,
repo,
@ -259,6 +259,60 @@ Pointer<git_repository> owner(Pointer<git_reference> ref) {
return libgit2.git_reference_owner(ref);
}
/// Conditionally create a new reference with the same name as the given reference
/// but a different OID target. The reference must be a direct reference, otherwise this will fail.
///
/// The new reference will be written to disk, overwriting the given reference.
///
/// Throws a [LibGit2Error] if error occured.
Pointer<git_reference> setTarget(
Pointer<git_reference> ref,
Pointer<git_oid> oid,
String? logMessage,
) {
final out = calloc<Pointer<git_reference>>();
final logMessageC = logMessage?.toNativeUtf8().cast<Int8>() ?? nullptr;
final error = libgit2.git_reference_set_target(out, ref, oid, logMessageC);
calloc.free(logMessageC);
if (error < 0) {
throw LibGit2Error(libgit2.git_error_last());
} else {
return out.value;
}
}
/// Create a new reference with the same name as the given reference but a different
/// symbolic target. The reference must be a symbolic reference, otherwise this will fail.
///
/// The new reference will be written to disk, overwriting the given reference.
///
/// The target name will be checked for validity.
///
/// The message for the reflog will be ignored if the reference does not belong in the
/// standard set (HEAD, branches and remote-tracking branches) and and it does not have a reflog.
///
/// Throws a [LibGit2Error] if error occured.
Pointer<git_reference> setTargetSymbolic(
Pointer<git_reference> ref,
String target,
String? logMessage,
) {
final out = calloc<Pointer<git_reference>>();
final targetC = target.toNativeUtf8().cast<Int8>();
final logMessageC = logMessage?.toNativeUtf8().cast<Int8>() ?? nullptr;
final error =
libgit2.git_reference_symbolic_set_target(out, ref, targetC, logMessageC);
calloc.free(targetC);
calloc.free(logMessageC);
if (error < 0) {
throw LibGit2Error(libgit2.git_error_last());
} else {
return out.value;
}
}
/// Ensure the reference name is well-formed.
///
/// Valid reference names must follow one of two patterns:

39
lib/src/reference.dart
View file

@ -1,6 +1,8 @@
import 'dart:ffi';
import 'bindings/libgit2_bindings.dart';
import 'bindings/reference.dart' as bindings;
import 'bindings/repository.dart' as repo_bindings;
import 'odb.dart';
import 'oid.dart';
import 'reflog.dart';
import 'util.dart';
@ -37,7 +39,7 @@ class Reference {
required String name,
required Pointer<git_oid> oid,
required bool force,
required String logMessage,
String? logMessage,
}) {
_refPointer = bindings.createDirect(repo, name, oid, force, logMessage);
}
@ -69,7 +71,7 @@ class Reference {
required String name,
required String target,
required bool force,
required String logMessage,
String? logMessage,
}) {
_refPointer =
bindings.createSymbolic(repo, name, target, force, logMessage);
@ -89,7 +91,7 @@ class Reference {
}
/// Pointer to memory address for allocated reference object.
late final Pointer<git_reference> _refPointer;
late Pointer<git_reference> _refPointer;
/// Checks if the reference [name] is well-formed.
///
@ -129,6 +131,37 @@ class Reference {
return Oid(oidPointer);
}
/// Conditionally creates a new reference with the same name as the given reference
/// but a different OID target.
///
/// The new reference will be written to disk, overwriting the given reference.
///
/// Throws a [LibGit2Error] if error occured.
void setTarget(String target, [String? logMessage]) {
late final Oid oid;
if (isValidShaHex(target)) {
if (target.length == 40) {
oid = Oid.fromSHA(target);
} else {
final shortOid = Oid.fromSHAn(target);
final odb = Odb(repo_bindings.odb(owner));
oid = Oid(odb.existsPrefix(shortOid.pointer, target.length));
odb.free();
}
} else {
final ref = Reference(bindings.lookup(owner, target));
oid = ref.target;
ref.free();
}
if (type == ReferenceType.direct) {
_refPointer = bindings.setTarget(_refPointer, oid.pointer, logMessage);
} else {
_refPointer = bindings.setTargetSymbolic(_refPointer, target, logMessage);
}
}
/// Returns the full name of a reference.
String get name => bindings.name(_refPointer);

10
lib/src/repository.dart
View file

@ -178,7 +178,7 @@ class Repository {
required String name,
required Object target,
bool force = false,
String logMessage = '',
String? logMessage,
}) {
late final Oid oid;
late final bool isDirect;
@ -186,7 +186,7 @@ class Repository {
if (target.runtimeType == Oid) {
oid = target as Oid;
isDirect = true;
} else if (_isValidShaHex(target as String)) {
} else if (isValidShaHex(target as String)) {
if (target.length == 40) {
oid = Oid.fromSHA(target);
} else {
@ -252,10 +252,4 @@ class Repository {
///
/// Throws a [LibGit2Error] if error occured.
Odb get odb => Odb(bindings.odb(_repoPointer));
bool _isValidShaHex(String str) {
final hexRegExp = RegExp(r'^[0-9a-fA-F]+$');
return hexRegExp.hasMatch(str) &&
(GIT_OID_MINPREFIXLEN <= str.length && GIT_OID_HEXSZ >= str.length);
}
}

6
lib/src/util.dart
View file

@ -19,3 +19,9 @@ DynamicLibrary loadLibrary() {
}
final libgit2 = Libgit2(loadLibrary());
bool isValidShaHex(String str) {
final hexRegExp = RegExp(r'^[0-9a-fA-F]+$');
return hexRegExp.hasMatch(str) &&
(GIT_OID_MINPREFIXLEN <= str.length && GIT_OID_HEXSZ >= str.length);
}