forgejo/services/markup/processorhelper.go

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// Copyright 2022 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package markup
import (
"context"
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"fmt"
"html/template"
"io"
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"code.gitea.io/gitea/models/perm/access"
"code.gitea.io/gitea/models/repo"
"code.gitea.io/gitea/models/unit"
"code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/gitrepo"
"code.gitea.io/gitea/modules/highlight"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/markup"
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"code.gitea.io/gitea/modules/translation"
gitea_context "code.gitea.io/gitea/services/context"
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file_service "code.gitea.io/gitea/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)
},
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GetRepoFileContent: func(ctx context.Context, ownerName, repoName, commitSha, filePath string) ([]template.HTML, 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
}
commit, err := gitRepo.GetCommit(commitSha)
if err != nil {
return nil, err
}
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
}
dataRc, err := blob.DataAsync()
if err != nil {
return nil, err
}
defer dataRc.Close()
buf, _ := io.ReadAll(dataRc)
fileContent, _, err := highlight.File(blob.Name(), language, buf)
if err != nil {
log.Error("highlight.File failed, fallback to plain text: %v", err)
fileContent = highlight.PlainText(buf)
}
return fileContent, nil
},
GetLocale: func(ctx context.Context) (translation.Locale, error) {
giteaCtx, ok := ctx.(*gitea_context.Context)
if ok {
return giteaCtx.Locale, nil
}
giteaBaseCtx, ok := ctx.(*gitea_context.Base)
if ok {
return giteaBaseCtx.Locale, nil
}
return nil, fmt.Errorf("could not retrieve locale from context")
},
}
}