Golang markdown.Render函數代碼示例

func UpdateCommentContent(ctx *context.Context) {
	comment, err := models.GetCommentByID(ctx.ParamsInt64(":id"))
	if err != nil {
		ctx.NotFoundOrServerError("GetCommentByID", models.IsErrCommentNotExist, err)
		return
	}

	if !ctx.IsSigned || (ctx.User.ID != comment.PosterID && !ctx.Repo.IsAdmin()) {
		ctx.Error(403)
		return
	} else if comment.Type != models.COMMENT_TYPE_COMMENT {
		ctx.Error(204)
		return
	}

	comment.Content = ctx.Query("content")
	if len(comment.Content) == 0 {
		ctx.JSON(200, map[string]interface{}{
			"content": "",
		})
		return
	}
	if err = models.UpdateComment(comment); err != nil {
		ctx.Handle(500, "UpdateComment", err)
		return
	}

	ctx.JSON(200, map[string]interface{}{
		"content": string(markdown.Render([]byte(comment.Content), ctx.Query("context"), ctx.Repo.Repository.ComposeMetas())),
	})
}

// https://github.com/gogits/go-gogs-client/wiki/Miscellaneous#render-an-arbitrary-markdown-document
func Markdown(ctx *context.APIContext, form api.MarkdownOption) {
	if ctx.HasApiError() {
		ctx.Error(422, "", ctx.GetErrMsg())
		return
	}

	if len(form.Text) == 0 {
		ctx.Write([]byte(""))
		return
	}

	switch form.Mode {
	case "gfm":
		ctx.Write(markdown.Render([]byte(form.Text), form.Context, nil))
	default:
		ctx.Write(markdown.RenderRaw([]byte(form.Text), ""))
	}
}

func Milestones(ctx *middleware.Context) {
	ctx.Data["Title"] = ctx.Tr("repo.milestones")
	ctx.Data["PageIsIssueList"] = true
	ctx.Data["PageIsMilestones"] = true

	isShowClosed := ctx.Query("state") == "closed"
	openCount, closedCount := models.MilestoneStats(ctx.Repo.Repository.ID)
	ctx.Data["OpenCount"] = openCount
	ctx.Data["ClosedCount"] = closedCount

	page := ctx.QueryInt("page")
	if page <= 1 {
		page = 1
	}

	var total int
	if !isShowClosed {
		total = int(openCount)
	} else {
		total = int(closedCount)
	}
	ctx.Data["Page"] = paginater.New(total, setting.IssuePagingNum, page, 5)

	miles, err := models.GetMilestones(ctx.Repo.Repository.ID, page, isShowClosed)
	if err != nil {
		ctx.Handle(500, "GetMilestones", err)
		return
	}
	for _, m := range miles {
		m.RenderedContent = string(markdown.Render([]byte(m.Content), ctx.Repo.RepoLink, ctx.Repo.Repository.ComposeMetas()))
		m.CalOpenIssues()
	}
	ctx.Data["Milestones"] = miles

	if isShowClosed {
		ctx.Data["State"] = "closed"
	} else {
		ctx.Data["State"] = "open"
	}

	ctx.Data["IsShowClosed"] = isShowClosed
	ctx.HTML(200, MILESTONE)
}

func UpdateIssueContent(ctx *context.Context) {
	issue := getActionIssue(ctx)
	if ctx.Written() {
		return
	}

	if !ctx.IsSigned || (ctx.User.ID != issue.PosterID && !ctx.Repo.IsWriter()) {
		ctx.Error(403)
		return
	}

	content := ctx.Query("content")
	if err := issue.ChangeContent(ctx.User, content); err != nil {
		ctx.Handle(500, "ChangeContent", err)
		return
	}

	ctx.JSON(200, map[string]interface{}{
		"content": string(markdown.Render([]byte(issue.Content), ctx.Query("context"), ctx.Repo.Repository.ComposeMetas())),
	})
}

func Home(ctx *context.Context) {
	title := ctx.Repo.Repository.Owner.Name + "/" + ctx.Repo.Repository.Name
	if len(ctx.Repo.Repository.Description) > 0 {
		title += ": " + ctx.Repo.Repository.Description
	}
	ctx.Data["Title"] = title
	ctx.Data["PageIsViewCode"] = true
	ctx.Data["RequireHighlightJS"] = true

	branchName := ctx.Repo.BranchName
	userName := ctx.Repo.Owner.Name
	repoName := ctx.Repo.Repository.Name

	repoLink := ctx.Repo.RepoLink
	branchLink := ctx.Repo.RepoLink + "/src/" + branchName
	treeLink := branchLink
	rawLink := ctx.Repo.RepoLink + "/raw/" + branchName

	// Get tree path
	treename := ctx.Repo.TreeName

	if len(treename) > 0 {
		if treename[len(treename)-1] == '/' {
			ctx.Redirect(repoLink + "/src/" + branchName + "/" + treename[:len(treename)-1])
			return
		}

		treeLink += "/" + treename
	}

	treePath := treename
	if len(treePath) != 0 {
		treePath = treePath + "/"
	}

	entry, err := ctx.Repo.Commit.GetTreeEntryByPath(treename)
	if err != nil && git.IsErrNotExist(err) {
		ctx.Handle(404, "GetTreeEntryByPath", err)
		return
	}

	if len(treename) != 0 && entry == nil {
		ctx.Handle(404, "repo.Home", nil)
		return
	}
	if entry != nil && !entry.IsDir() {
		blob := entry.Blob()

		if dataRc, err := blob.Data(); err != nil {
			ctx.Handle(404, "blob.Data", err)
			return
		} else {
			ctx.Data["FileSize"] = blob.Size()
			ctx.Data["IsFile"] = true
			ctx.Data["FileName"] = blob.Name()
			ctx.Data["HighlightClass"] = highlight.FileNameToHighlightClass(blob.Name())
			ctx.Data["FileLink"] = rawLink + "/" + treename

			buf := make([]byte, 1024)
			n, _ := dataRc.Read(buf)
			if n > 0 {
				buf = buf[:n]
			}

			_, isTextFile := base.IsTextFile(buf)
			_, isImageFile := base.IsImageFile(buf)
			_, isPDFFile := base.IsPDFFile(buf)
			ctx.Data["IsFileText"] = isTextFile

			switch {
			case isPDFFile:
				ctx.Data["IsPDFFile"] = true
			case isImageFile:
				ctx.Data["IsImageFile"] = true
			case isTextFile:
				if blob.Size() >= setting.MaxDisplayFileSize {
					ctx.Data["IsFileTooLarge"] = true
				} else {
					ctx.Data["IsFileTooLarge"] = false
					d, _ := ioutil.ReadAll(dataRc)
					buf = append(buf, d...)
					readmeExist := markdown.IsMarkdownFile(blob.Name()) || markdown.IsReadmeFile(blob.Name())
					ctx.Data["ReadmeExist"] = readmeExist
					if readmeExist {
						ctx.Data["FileContent"] = string(markdown.Render(buf, path.Dir(treeLink), ctx.Repo.Repository.ComposeMetas()))
					} else {
						if err, content := template.ToUtf8WithErr(buf); err != nil {
							if err != nil {
								log.Error(4, "Convert content encoding: %s", err)
							}
							ctx.Data["FileContent"] = string(buf)
						} else {
							ctx.Data["FileContent"] = content
						}
					}
				}
			}
		}
	} else {
		// Directory and file list.
//.........這裏部分代碼省略.........

func renderWikiPage(ctx *context.Context, isViewPage bool) (*git.Repository, string) {
	wikiRepo, err := git.OpenRepository(ctx.Repo.Repository.WikiPath())
	if err != nil {
		ctx.Handle(500, "OpenRepository", err)
		return nil, ""
	}
	commit, err := wikiRepo.GetBranchCommit("master")
	if err != nil {
		ctx.Handle(500, "GetBranchCommit", err)
		return nil, ""
	}

	// Get page list.
	if isViewPage {
		entries, err := commit.ListEntries()
		if err != nil {
			ctx.Handle(500, "ListEntries", err)
			return nil, ""
		}
		pages := make([]PageMeta, 0, len(entries))
		for i := range entries {
			if entries[i].Type == git.OBJECT_BLOB && strings.HasSuffix(entries[i].Name(), ".md") {
				name := strings.TrimSuffix(entries[i].Name(), ".md")
				pages = append(pages, PageMeta{
					Name: name,
					URL:  models.ToWikiPageURL(name),
				})
			}
		}
		ctx.Data["Pages"] = pages
	}

	pageURL := ctx.Params(":page")
	if len(pageURL) == 0 {
		pageURL = "Home"
	}
	ctx.Data["PageURL"] = pageURL

	pageName := models.ToWikiPageName(pageURL)
	ctx.Data["old_title"] = pageName
	ctx.Data["Title"] = pageName
	ctx.Data["title"] = pageName
	ctx.Data["RequireHighlightJS"] = true

	blob, err := commit.GetBlobByPath(pageName + ".md")
	if err != nil {
		if git.IsErrNotExist(err) {
			ctx.Redirect(ctx.Repo.RepoLink + "/wiki/_pages")
		} else {
			ctx.Handle(500, "GetBlobByPath", err)
		}
		return nil, ""
	}
	r, err := blob.Data()
	if err != nil {
		ctx.Handle(500, "Data", err)
		return nil, ""
	}
	data, err := ioutil.ReadAll(r)
	if err != nil {
		ctx.Handle(500, "ReadAll", err)
		return nil, ""
	}
	if isViewPage {
		ctx.Data["content"] = string(markdown.Render(data, ctx.Repo.RepoLink, ctx.Repo.Repository.ComposeMetas()))
	} else {
		ctx.Data["content"] = string(data)
	}

	return wikiRepo, pageName
}

func ViewIssue(ctx *context.Context) {
	ctx.Data["RequireHighlightJS"] = true
	ctx.Data["RequireDropzone"] = true
	renderAttachmentSettings(ctx)

	issue, err := models.GetIssueByIndex(ctx.Repo.Repository.ID, ctx.ParamsInt64(":index"))
	if err != nil {
		if models.IsErrIssueNotExist(err) {
			ctx.Handle(404, "GetIssueByIndex", err)
		} else {
			ctx.Handle(500, "GetIssueByIndex", err)
		}
		return
	}
	ctx.Data["Title"] = issue.Title

	// Make sure type and URL matches.
	if ctx.Params(":type") == "issues" && issue.IsPull {
		ctx.Redirect(ctx.Repo.RepoLink + "/pulls/" + com.ToStr(issue.Index))
		return
	} else if ctx.Params(":type") == "pulls" && !issue.IsPull {
		ctx.Redirect(ctx.Repo.RepoLink + "/issues/" + com.ToStr(issue.Index))
		return
	}

	if issue.IsPull {
		MustAllowPulls(ctx)
		if ctx.Written() {
			return
		}
		ctx.Data["PageIsPullList"] = true
		ctx.Data["PageIsPullConversation"] = true
	} else {
		MustEnableIssues(ctx)
		if ctx.Written() {
			return
		}
		ctx.Data["PageIsIssueList"] = true
	}

	issue.RenderedContent = string(markdown.Render([]byte(issue.Content), ctx.Repo.RepoLink,
		ctx.Repo.Repository.ComposeMetas()))

	repo := ctx.Repo.Repository

	// Get more information if it's a pull request.
	if issue.IsPull {
		if issue.PullRequest.HasMerged {
			ctx.Data["DisableStatusChange"] = issue.PullRequest.HasMerged
			PrepareMergedViewPullInfo(ctx, issue)
		} else {
			PrepareViewPullInfo(ctx, issue)
		}
		if ctx.Written() {
			return
		}
	}

	// Metas.
	// Check labels.
	labelIDMark := make(map[int64]bool)
	for i := range issue.Labels {
		labelIDMark[issue.Labels[i].ID] = true
	}
	labels, err := models.GetLabelsByRepoID(repo.ID)
	if err != nil {
		ctx.Handle(500, "GetLabelsByRepoID", err)
		return
	}
	hasSelected := false
	for i := range labels {
		if labelIDMark[labels[i].ID] {
			labels[i].IsChecked = true
			hasSelected = true
		}
	}
	ctx.Data["HasSelectedLabel"] = hasSelected
	ctx.Data["Labels"] = labels

	// Check milestone and assignee.
	if ctx.Repo.IsWriter() {
		RetrieveRepoMilestonesAndAssignees(ctx, repo)
		if ctx.Written() {
			return
		}
	}

	if ctx.IsSigned {
		// Update issue-user.
		if err = issue.ReadBy(ctx.User.ID); err != nil {
			ctx.Handle(500, "ReadBy", err)
			return
		}
	}

	var (
		tag          models.CommentTag
		ok           bool
		marked       = make(map[int64]models.CommentTag)
		comment      *models.Comment
//.........這裏部分代碼省略.........

func renderDirectory(ctx *context.Context, treeLink string) {
	tree, err := ctx.Repo.Commit.SubTree(ctx.Repo.TreePath)
	if err != nil {
		ctx.NotFoundOrServerError("Repo.Commit.SubTree", git.IsErrNotExist, err)
		return
	}

	entries, err := tree.ListEntries()
	if err != nil {
		ctx.Handle(500, "ListEntries", err)
		return
	}
	entries.Sort()

	ctx.Data["Files"], err = entries.GetCommitsInfo(ctx.Repo.Commit, ctx.Repo.TreePath)
	if err != nil {
		ctx.Handle(500, "GetCommitsInfo", err)
		return
	}

	var readmeFile *git.Blob
	for _, entry := range entries {
		if entry.IsDir() || !markdown.IsReadmeFile(entry.Name()) {
			continue
		}

		// TODO: collect all possible README files and show with priority.
		readmeFile = entry.Blob()
		break
	}

	if readmeFile != nil {
		ctx.Data["RawFileLink"] = ""
		ctx.Data["ReadmeInList"] = true
		ctx.Data["ReadmeExist"] = true

		dataRc, err := readmeFile.Data()
		if err != nil {
			ctx.Handle(500, "Data", err)
			return
		}

		buf := make([]byte, 1024)
		n, _ := dataRc.Read(buf)
		buf = buf[:n]

		isTextFile := base.IsTextFile(buf)
		ctx.Data["FileIsText"] = isTextFile
		ctx.Data["FileName"] = readmeFile.Name()
		// FIXME: what happens when README file is an image?
		if isTextFile {
			d, _ := ioutil.ReadAll(dataRc)
			buf = append(buf, d...)
			switch {
			case markdown.IsMarkdownFile(readmeFile.Name()):
				ctx.Data["IsMarkdown"] = true
				buf = markdown.Render(buf, treeLink, ctx.Repo.Repository.ComposeMetas())
			default:
				buf = bytes.Replace(buf, []byte("\n"), []byte(`<br>`), -1)
			}
			ctx.Data["FileContent"] = string(buf)
		}
	}

	// Show latest commit info of repository in table header,
	// or of directory if not in root directory.
	latestCommit := ctx.Repo.Commit
	if len(ctx.Repo.TreePath) > 0 {
		latestCommit, err = ctx.Repo.Commit.GetCommitByPath(ctx.Repo.TreePath)
		if err != nil {
			ctx.Handle(500, "GetCommitByPath", err)
			return
		}
	}
	ctx.Data["LatestCommit"] = latestCommit
	ctx.Data["LatestCommitUser"] = models.ValidateCommitWithEmail(latestCommit)

	// Check permission to add or upload new file.
	if ctx.Repo.IsWriter() && ctx.Repo.IsViewBranch {
		ctx.Data["CanAddFile"] = true
		ctx.Data["CanUploadFile"] = setting.Repository.Upload.Enabled
	}
}

func renderFile(ctx *context.Context, entry *git.TreeEntry, treeLink, rawLink string) {
	ctx.Data["IsViewFile"] = true

	blob := entry.Blob()
	dataRc, err := blob.Data()
	if err != nil {
		ctx.Handle(500, "Data", err)
		return
	}

	ctx.Data["FileSize"] = blob.Size()
	ctx.Data["FileName"] = blob.Name()
	ctx.Data["HighlightClass"] = highlight.FileNameToHighlightClass(blob.Name())
	ctx.Data["RawFileLink"] = rawLink + "/" + ctx.Repo.TreePath

	buf := make([]byte, 1024)
	n, _ := dataRc.Read(buf)
	buf = buf[:n]

	isTextFile := base.IsTextFile(buf)
	ctx.Data["IsTextFile"] = isTextFile

	// Assume file is not editable first.
	if !isTextFile {
		ctx.Data["EditFileTooltip"] = ctx.Tr("repo.editor.cannot_edit_non_text_files")
	}

	switch {
	case isTextFile:
		if blob.Size() >= setting.UI.MaxDisplayFileSize {
			ctx.Data["IsFileTooLarge"] = true
			break
		}

		d, _ := ioutil.ReadAll(dataRc)
		buf = append(buf, d...)

		isMarkdown := markdown.IsMarkdownFile(blob.Name())
		ctx.Data["IsMarkdown"] = isMarkdown

		readmeExist := isMarkdown || markdown.IsReadmeFile(blob.Name())
		ctx.Data["ReadmeExist"] = readmeExist

		isYaml := yaml.IsYamlFile(blob.Name())
		ctx.Data["IsYaml"] = isYaml

		if readmeExist {
			// TODO: don't need to render if it's a README but not Markdown file.
			yamlHtml := yaml.RenderMarkdownYaml(buf)
			markdownBody := markdown.Render(yaml.StripYamlFromText(buf), path.Dir(treeLink), ctx.Repo.Repository.ComposeMetas())
			ctx.Data["FileContent"] = string(append(yamlHtml, markdownBody...))
		} else if isYaml {
			ctx.Data["FileContent"] = string(yaml.RenderYaml(buf))
		} else {
			// Building code view blocks with line number on server side.
			var fileContent string
			if err, content := template.ToUTF8WithErr(buf); err != nil {
				if err != nil {
					log.Error(4, "ToUTF8WithErr: %s", err)
				}
				fileContent = string(buf)
			} else {
				fileContent = content
			}

			var output bytes.Buffer
			lines := strings.Split(fileContent, "\n")
			for index, line := range lines {
				output.WriteString(fmt.Sprintf(`<li class="L%d" rel="L%d">%s</li>`, index+1, index+1, gotemplate.HTMLEscapeString(line)) + "\n")
			}
			ctx.Data["FileContent"] = gotemplate.HTML(output.String())

			output.Reset()
			for i := 0; i < len(lines); i++ {
				output.WriteString(fmt.Sprintf(`<span id="L%d">%d</span>`, i+1, i+1))
			}
			ctx.Data["LineNums"] = gotemplate.HTML(output.String())
		}

		if ctx.Repo.CanEnableEditor() {
			ctx.Data["CanEditFile"] = true
			ctx.Data["EditFileTooltip"] = ctx.Tr("repo.editor.edit_this_file")
		} else if !ctx.Repo.IsViewBranch {
			ctx.Data["EditFileTooltip"] = ctx.Tr("repo.editor.must_be_on_a_branch")
		} else if !ctx.Repo.IsWriter() {
			ctx.Data["EditFileTooltip"] = ctx.Tr("repo.editor.fork_before_edit")
		}

	case base.IsPDFFile(buf):
		ctx.Data["IsPDFFile"] = true
	case base.IsImageFile(buf):
		ctx.Data["IsImageFile"] = true
	}

	if ctx.Repo.CanEnableEditor() {
		ctx.Data["CanDeleteFile"] = true
		ctx.Data["DeleteFileTooltip"] = ctx.Tr("repo.editor.delete_this_file")
	} else if !ctx.Repo.IsViewBranch {
		ctx.Data["DeleteFileTooltip"] = ctx.Tr("repo.editor.must_be_on_a_branch")
	} else if !ctx.Repo.IsWriter() {
//.........這裏部分代碼省略.........