Merge pull request #550 from libgit2/add-merge-conflicted-files-to-error-info

Add merge conflicted files to user info

Author: joshaber

ObjectiveGit/GTRepository+Pull.h

@@ -11,6 +11,9 @@
 
 NS_ASSUME_NONNULL_BEGIN
 
+/// UserInfo key for conflicted files when pulling fails with a merge conflict
+extern NSString * const GTPullMergeConflictedFiles;
+
 /// An enum describing the result of the merge analysis.
 /// See `git_merge_analysis_t`.
 typedef NS_OPTIONS(NSInteger, GTMergeAnalysis) {

ObjectiveGit/GTRepository+Pull.m

@@ -20,6 +20,8 @@
 #import "GTIndexEntry.h"
 #import "git2/errors.h"
 
+NSString * const GTPullMergeConflictedFiles = @"GTPullMergeConflictedFiles";
+
 @implementation GTRepository (Pull)
 
 #pragma mark - Pull
@@ -112,11 +114,8 @@ - (BOOL)pullBranch:(GTBranch *)branch fromRemote:(GTRemote *)remote withOptions:
 				[files addObject:ours.path];
 			}];
 			if (error != NULL) {
-				if (files.count > 0) {
-					*error = [NSError git_errorFor:GIT_ECONFLICT description:@"Merge conflict in files: %@. Pull aborted.", [files componentsJoinedByString:@", "]];
-				} else {
-					*error = [NSError git_errorFor:GIT_ECONFLICT description:@"Merge conflict, pull aborted"];
-				}
+				NSDictionary *userInfo = @{GTPullMergeConflictedFiles: files};
+				*error = [NSError git_errorFor:GIT_ECONFLICT description:@"Merge conflict, Pull aborted." userInfo:userInfo failureReason:nil];
 			}
 			return NO;
 		}

ObjectiveGitTests/GTRepository+PullSpec.m

@@ -257,7 +257,9 @@
 				transferProgressed = YES;
 			}];
 			expect(@(result)).to(beFalsy());
-			expect(error).toNot(beNil());
+			expect(error.domain).to(equal(@"GTGitErrorDomain"));
+			expect(error.userInfo[GTPullMergeConflictedFiles]).to(equal(@[@"test.txt"]));
+			expect(error.localizedDescription).to(equal(@"Merge conflict, Pull aborted."));
 			expect(@(transferProgressed)).to(beTruthy());
 		});