Encapsulate libgit commands into single backend

Sets stage for allowing alternate backends for version control

common/git/project_git_utils.cpp

@@ -22,105 +22,25 @@
  */
 
 #include "project_git_utils.h"
-#include "kicad_git_common.h"
-#include "kicad_git_memory.h"
-#include <git/kicad_git_compat.h>
-#include <trace_helpers.h>
-#include <wx/log.h>
-#include <wx/filename.h>
-#include <gestfich.h>
+#include "git_backend.h"
 
 namespace KIGIT
 {
 
 git_repository* PROJECT_GIT_UTILS::GetRepositoryForFile( const char* aFilename )
 {
-    git_repository* repo = nullptr;
-    git_buf repo_path = GIT_BUF_INIT;
-
-    if( git_repository_discover( &repo_path, aFilename, 0, nullptr ) != GIT_OK )
-    {
-        wxLogTrace( traceGit, "Can't repo discover %s: %s", aFilename,
-                    KIGIT_COMMON::GetLastGitError() );
-        return nullptr;
-    }
-
-    KIGIT::GitBufPtr repo_path_ptr( &repo_path );
-
-    if( git_repository_open( &repo, repo_path.ptr ) != GIT_OK )
-    {
-        wxLogTrace( traceGit, "Can't open repo for %s: %s", repo_path.ptr,
-                    KIGIT_COMMON::GetLastGitError() );
-        return nullptr;
-    }
-
-    return repo;
+    return GetGitBackend()->GetRepositoryForFile( aFilename );
 }
 
 int PROJECT_GIT_UTILS::CreateBranch( git_repository* aRepo, const wxString& aBranchName )
 {
-    git_oid head_oid;
-
-    if( int error = git_reference_name_to_id( &head_oid, aRepo, "HEAD" ); error != GIT_OK )
-    {
-        wxLogTrace( traceGit, "Failed to lookup HEAD reference: %s",
-                    KIGIT_COMMON::GetLastGitError() );
-        return error;
-    }
-
-    git_commit* commit = nullptr;
-
-    if( int error = git_commit_lookup( &commit, aRepo, &head_oid ); error != GIT_OK )
-    {
-        wxLogTrace( traceGit, "Failed to lookup commit: %s",
-                    KIGIT_COMMON::GetLastGitError() );
-        return error;
-    }
-
-    KIGIT::GitCommitPtr commitPtr( commit );
-    git_reference* branchRef = nullptr;
-
-    if( int error = git_branch_create( &branchRef, aRepo, aBranchName.mb_str(), commit, 0 ); error != GIT_OK )
-    {
-        wxLogTrace( traceGit, "Failed to create branch: %s",
-                    KIGIT_COMMON::GetLastGitError() );
-        return error;
-    }
-
-    git_reference_free( branchRef );
-    return 0;
+    return GetGitBackend()->CreateBranch( aRepo, aBranchName );
 }
 
 bool PROJECT_GIT_UTILS::RemoveVCS( git_repository*& aRepo, const wxString& aProjectPath,
                                   bool aRemoveGitDir, wxString* aErrors )
 {
-    if( aRepo )
-    {
-        git_repository_free( aRepo );
-        aRepo = nullptr;
-    }
-
-    if( aRemoveGitDir )
-    {
-        wxFileName gitDir( aProjectPath, wxEmptyString );
-        gitDir.AppendDir( ".git" );
-
-        if( gitDir.DirExists() )
-        {
-            wxString errors;
-            if( !RmDirRecursive( gitDir.GetPath(), &errors ) )
-            {
-                if( aErrors )
-                    *aErrors = errors;
-
-                wxLogTrace( traceGit, "Failed to remove .git directory: %s", errors );
-                return false;
-            }
-        }
-    }
-
-    wxLogTrace( traceGit, "Successfully removed VCS from project" );
-    return true;
+    return GetGitBackend()->RemoveVCS( aRepo, aProjectPath, aRemoveGitDir, aErrors );
 }
 
-} // namespace KIGIT
+} // namespace KIGIT