// Copyright 2022 The Gitea Authors. All rights reserved.// SPDX-License-Identifier: MIT package markup import (	"context"	"fmt" 	"forgejo.org/models/perm/access"	"forgejo.org/models/repo"	"forgejo.org/models/unit"	"forgejo.org/models/user"	"forgejo.org/modules/git"	"forgejo.org/modules/gitrepo"	"forgejo.org/modules/log"	"forgejo.org/modules/markup"	gitea_context "forgejo.org/services/context"	file_service "forgejo.org/services/repository/files") func ProcessorHelper() *markup.ProcessorHelper {	return &markup.ProcessorHelper{		ElementDir: "auto", // set dir="auto" for necessary (eg: <p>, <h?>, etc) tags		IsUsernameMentionable: func(ctx context.Context, username string) bool {			mentionedUser, err := user.GetUserByName(ctx, username)			if err != nil {				return false			} 			giteaCtx, ok := ctx.(*gitea_context.Context)			if !ok {				// when using general context, use user's visibility to check				return mentionedUser.Visibility.IsPublic()			} 			// when using gitea context (web context), use user's visibility and user's permission to check			return user.IsUserVisibleToViewer(giteaCtx, mentionedUser, giteaCtx.Doer)		},		GetRepoFileBlob: func(ctx context.Context, ownerName, repoName, commitSha, filePath string, language *string) (*git.Blob, error) {			repo, err := repo.GetRepositoryByOwnerAndName(ctx, ownerName, repoName)			if err != nil {				return nil, err			} 			var user *user.User 			giteaCtx, ok := ctx.(*gitea_context.Context)			if ok {				user = giteaCtx.Doer			} 			perms, err := access.GetUserRepoPermission(ctx, repo, user)			if err != nil {				return nil, err			}			if !perms.CanRead(unit.TypeCode) {				return nil, fmt.Errorf("cannot access repository code")			} 			gitRepo, err := gitrepo.OpenRepository(ctx, repo)			if err != nil {				return nil, err			}			defer gitRepo.Close() 			commit, err := gitRepo.GetCommit(commitSha)			if err != nil {				return nil, err			} 			if language != nil {				*language, err = file_service.TryGetContentLanguage(gitRepo, commitSha, filePath)				if err != nil {					log.Error("Unable to get file language for %-v:%s. Error: %v", repo, filePath, err)				}			} 			blob, err := commit.GetBlobByPath(filePath)			if err != nil {				return nil, err			} 			return blob, nil		},	}}