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36 changes: 36 additions & 0 deletions
36
asciidoc-java/src/main/java/io/yupiik/asciidoc/renderer/html/IdGenerator.java
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|---|---|---|
| @@ -0,0 +1,36 @@ | ||
| /* | ||
| * Copyright (c) 2020 - 2023 - Yupiik SAS - https://www.yupiik.com | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
| package io.yupiik.asciidoc.renderer.html; | ||
|
|
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| import java.util.regex.Pattern; | ||
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| import static java.util.Locale.ROOT; | ||
|
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| public final class IdGenerator { | ||
| private static final Pattern TAGS = Pattern.compile("<[^>]+>"); | ||
| private static final Pattern FORBIDDEN_CHARS = Pattern.compile("[^\\w]+"); | ||
|
|
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| private IdGenerator() { | ||
| // no-op | ||
| } | ||
|
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| public static String forTitle(final String title) { | ||
| return "_" + FORBIDDEN_CHARS.matcher(TAGS.matcher(title).replaceAll("").toLowerCase(ROOT) | ||
| .replace(" ", "_") | ||
| .replace("\n", "")) | ||
| .replaceAll(""); | ||
| } | ||
| } |
92 changes: 92 additions & 0 deletions
92
asciidoc-java/src/main/java/io/yupiik/asciidoc/renderer/html/TocVisitor.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,92 @@ | ||
| /* | ||
| * Copyright (c) 2020 - 2023 - Yupiik SAS - https://www.yupiik.com | ||
| * Licensed under the Apache License, Version 2.0 (the "License"); | ||
| * you may not use this file except in compliance | ||
| * with the License. You may obtain a copy of the License at | ||
| * | ||
| * http://www.apache.org/licenses/LICENSE-2.0 | ||
| * | ||
| * Unless required by applicable law or agreed to in writing, | ||
| * software distributed under the License is distributed on an | ||
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | ||
| * KIND, either express or implied. See the License for the | ||
| * specific language governing permissions and limitations | ||
| * under the License. | ||
| */ | ||
| package io.yupiik.asciidoc.renderer.html; | ||
|
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| import io.yupiik.asciidoc.model.Body; | ||
| import io.yupiik.asciidoc.model.Element; | ||
| import io.yupiik.asciidoc.model.Section; | ||
| import io.yupiik.asciidoc.model.Text; | ||
| import io.yupiik.asciidoc.renderer.Visitor; | ||
|
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| import java.util.ArrayList; | ||
| import java.util.Collection; | ||
| import java.util.Map; | ||
|
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| import static java.util.Locale.ROOT; | ||
| import static java.util.Optional.ofNullable; | ||
| import static java.util.stream.Collectors.joining; | ||
|
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| public class TocVisitor implements Visitor<StringBuilder> { | ||
| private final int maxLevel; | ||
| private final int currentLevel; | ||
| private final Collection<Section> sections = new ArrayList<>(); | ||
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| public TocVisitor(final int toclevels, final int currentLevel) { | ||
| this.maxLevel = toclevels; | ||
| this.currentLevel = currentLevel; | ||
| } | ||
|
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| @Override | ||
| public void visitSection(final Section element) { | ||
| if (element.level() == currentLevel) { | ||
| sections.add(element); | ||
| } | ||
| } | ||
|
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| @Override | ||
| public StringBuilder result() { | ||
| final var builder = new StringBuilder(); | ||
| if (sections.isEmpty()) { | ||
| return builder; | ||
| } | ||
|
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| builder.append(" <ul class=\"sectlevel").append(currentLevel).append("\">\n"); | ||
| if (currentLevel == maxLevel) { | ||
| builder.append(sections.stream() | ||
| .map(it -> { | ||
| final var title = title(it.title()); | ||
| return " <li><a href=\"#" + id(it, title) + "\">" + title + "</a></li>"; | ||
| }) | ||
| .collect(joining("\n", "", "\n"))); | ||
| } else { | ||
| builder.append(sections.stream() | ||
| .map(it -> { | ||
| final var tocVisitor = new TocVisitor(maxLevel, currentLevel + 1); | ||
| tocVisitor.visitBody(new Body(it.children())); | ||
| final var children = tocVisitor.result().toString(); | ||
| final var title = title(it.title()); | ||
| return " <li><a href=\"#" + id(it, title) + "\">" + title + "</a>\n" + children + " </li>"; | ||
| }) | ||
| .collect(joining("\n", "", "\n"))); | ||
| } | ||
| builder.append(" </ul>\n"); | ||
| return builder; | ||
| } | ||
|
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| private String id(final Section section, final String title) { | ||
| return ofNullable(section.options().get("id")) | ||
| // todo: better sanitization | ||
| .orElseGet(() -> IdGenerator.forTitle(title)); | ||
| } | ||
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| private String title(final Element title) { | ||
| final var titleRenderer = new AsciidoctorLikeHtmlRenderer(new AsciidoctorLikeHtmlRenderer.Configuration()); | ||
| titleRenderer.visitElement(title instanceof Text t && t.options().isEmpty() && t.style().isEmpty() ? | ||
| new Text(t.style(), t.value(), Map.of("nowrap", "")) : | ||
| title); | ||
| return titleRenderer.result(); | ||
| } | ||
| } |
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