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Code Issues Releases Wiki Activity

Refactor MarkdownUtils.

pull/172/head
ruibaby 2019-05-29 15:21:12 +08:00
parent 98caa57e47
commit 0050213f49
2 changed files with 66 additions and 9 deletions
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4
build.gradle
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@ -56,6 +56,10 @@ dependencies {
implementation 'com.atlassian.commonmark:commonmark:0.12.1'
implementation 'com.atlassian.commonmark:commonmark-ext-gfm-tables:0.12.1'
implementation 'com.atlassian.commonmark:commonmark-ext-yaml-front-matter:0.12.1'
implementation 'com.atlassian.commonmark:commonmark-ext-autolink:0.12.1'
implementation 'com.atlassian.commonmark:commonmark-ext-gfm-strikethrough:0.12.1'
implementation 'com.atlassian.commonmark:commonmark-ext-heading-anchor:0.12.1'
implementation 'com.atlassian.commonmark:commonmark-ext-ins:0.12.1'
implementation 'io.springfox:springfox-swagger2:2.9.2'
implementation 'io.springfox:springfox-swagger-ui:2.9.2'
implementation 'org.apache.commons:commons-lang3:3.8.1'

71
src/main/java/run/halo/app/utils/MarkdownUtils.java
View File

@ -2,9 +2,13 @@ package run.halo.app.utils;
import org.apache.commons.lang3.StringUtils;
import org.commonmark.Extension;
import org.commonmark.ext.autolink.AutolinkExtension;
import org.commonmark.ext.front.matter.YamlFrontMatterExtension;
import org.commonmark.ext.front.matter.YamlFrontMatterVisitor;
import org.commonmark.ext.gfm.strikethrough.StrikethroughExtension;
import org.commonmark.ext.gfm.tables.TablesExtension;
import org.commonmark.ext.heading.anchor.HeadingAnchorExtension;
import org.commonmark.ext.ins.InsExtension;
import org.commonmark.node.Node;
import org.commonmark.parser.Parser;
import org.commonmark.renderer.html.HtmlRenderer;
@ -26,30 +30,73 @@ import java.util.Set;
*/
public class MarkdownUtils {
/**
* Front-matter extension
*/
private static final Set<Extension> EXTENSIONS_YAML = Collections.singleton(YamlFrontMatterExtension.create());
/**
* Table extension
* commonmark-java extension for autolinking
*/
private static final Set<Extension> EXTENSIONS_TABLE = Collections.singleton(TablesExtension.create());
private static final Set<Extension> EXTENSIONS_AUTO_LINK = Collections.singleton(AutolinkExtension.create());
/**
* commonmark-java extension for strikethrough
*/
private static final Set<Extension> EXTENSIONS_STRIKETHROUGH = Collections.singleton(StrikethroughExtension.create());
/**
* commonmark-java extension for tables
*/
private static final Set<Extension> EXTENSIONS_TABLES = Collections.singleton(TablesExtension.create());
/**
* commonmark-java extension for adding id attributes to h tags
*/
private static final Set<Extension> EXTENSIONS_HEADING_ANCHOR = Collections.singleton(HeadingAnchorExtension.create());
/**
* commonmark-java extension for &lt;ins&gt; (underline)
*/
private static final Set<Extension> EXTENSIONS_INS = Collections.singleton(InsExtension.create());
/**
* commonmark-java extension for YAML front matter
*/
private static final Set<Extension> EXTENSIONS_YAML_FRONT_MATTER = Collections.singleton(YamlFrontMatterExtension.create());
/**
* Parse Markdown content
*/
private static final Parser PARSER = Parser.builder().extensions(EXTENSIONS_YAML).extensions(EXTENSIONS_TABLE).build();
private static final Parser PARSER = Parser.builder()
.extensions(EXTENSIONS_AUTO_LINK)
.extensions(EXTENSIONS_STRIKETHROUGH)
.extensions(EXTENSIONS_TABLES)
.extensions(EXTENSIONS_HEADING_ANCHOR)
.extensions(EXTENSIONS_INS)
.extensions(EXTENSIONS_YAML_FRONT_MATTER)
.build();
/**
* Render HTML content
*/
private static final HtmlRenderer RENDERER = HtmlRenderer.builder().extensions(EXTENSIONS_YAML).extensions(EXTENSIONS_TABLE).build();
private static final HtmlRenderer RENDERER = HtmlRenderer.builder()
.extensions(EXTENSIONS_AUTO_LINK)
.extensions(EXTENSIONS_STRIKETHROUGH)
.extensions(EXTENSIONS_TABLES)
.extensions(EXTENSIONS_HEADING_ANCHOR)
.extensions(EXTENSIONS_INS)
.extensions(EXTENSIONS_YAML_FRONT_MATTER)
.build();
/**
* Render text content
*/
private static final TextContentRenderer TEXT_CONTENT_RENDERER = TextContentRenderer.builder().extensions(EXTENSIONS_YAML).extensions(EXTENSIONS_TABLE).build();
private static final TextContentRenderer TEXT_CONTENT_RENDERER = TextContentRenderer.builder()
.extensions(EXTENSIONS_AUTO_LINK)
.extensions(EXTENSIONS_STRIKETHROUGH)
.extensions(EXTENSIONS_TABLES)
.extensions(EXTENSIONS_HEADING_ANCHOR)
.extensions(EXTENSIONS_INS)
.extensions(EXTENSIONS_YAML_FRONT_MATTER)
.build();
/**
* Render Markdown content
@ -59,20 +106,25 @@ public class MarkdownUtils {
* @see <a href="https://github.com/otale/tale/blob/master/src/main/java/com/tale/utils/TaleUtils.java">TaleUtils.java</a>
*/
public static String renderMarkdown(String content) {
final Node document = PARSER.parse(content);
String renderContent = RENDERER.render(document);
// render netease music short url
if (content.contains(HaloConst.NETEASE_MUSIC_PREFIX)) {
renderContent = content.replaceAll(HaloConst.NETEASE_MUSIC_REG_PATTERN, HaloConst.NETEASE_MUSIC_IFRAME);
}
// render bilibili video short url
if (content.contains(HaloConst.BILIBILI_VIDEO_PREFIX)) {
renderContent = content.replaceAll(HaloConst.BILIBILI_VIDEO_REG_PATTERN, HaloConst.BILIBILI_VIDEO_IFRAME);
}
// render youtube video short url
if (content.contains(HaloConst.YOUTUBE_VIDEO_PREFIX)) {
renderContent = content.replaceAll(HaloConst.YOUTUBE_VIDEO_REG_PATTERN, HaloConst.YOUTUBE_VIDEO_IFRAME);
}
return renderContent;
}
@ -84,6 +136,7 @@ public class MarkdownUtils {
*/
@NonNull
public static String renderText(@Nullable String markdownContent) {
if (StringUtils.isBlank(markdownContent)) {
return "";
}