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dee84113ab
This patch changes the HTML formatting (where to put newlines, etc...) to better match commonmark's test cases. This has minimal effect of the correctness of our markdown implementation, but makes it easier to test. Changes: - Use <em> instead of <i>. - Newline before end of code block. - <hr /> instead of <hr>. - Newline before first list item. - Newline between lines of a paragraph. - Trim whitespace on lines of paragraphs. Tests passed: 33/652 -> 87/652
136 lines
3.3 KiB
C++
136 lines
3.3 KiB
C++
/*
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* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/StringBuilder.h>
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#include <LibMarkdown/List.h>
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namespace Markdown {
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String List::render_to_html() const
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{
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StringBuilder builder;
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const char* tag = m_is_ordered ? "ol" : "ul";
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builder.appendff("<{}>\n", tag);
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for (auto& item : m_items) {
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builder.append("<li>");
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builder.append(item.render_to_html());
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builder.append("</li>\n");
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}
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builder.appendff("</{}>\n", tag);
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return builder.build();
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}
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String List::render_for_terminal(size_t) const
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{
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StringBuilder builder;
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int i = 0;
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for (auto& item : m_items) {
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builder.append(" ");
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if (m_is_ordered)
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builder.appendff("{}. ", ++i);
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else
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builder.append("* ");
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builder.append(item.render_for_terminal());
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builder.append("\n");
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}
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builder.append("\n");
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return builder.build();
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}
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OwnPtr<List> List::parse(Vector<StringView>::ConstIterator& lines)
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{
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Vector<Text> items;
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bool is_ordered = false;
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bool first = true;
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size_t offset = 0;
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StringBuilder item_builder;
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auto flush_item_if_needed = [&] {
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if (first)
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return true;
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auto text = Text::parse(item_builder.string_view());
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if (!text.has_value())
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return false;
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items.append(move(text.value()));
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item_builder.clear();
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return true;
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};
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while (true) {
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if (lines.is_end())
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break;
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const StringView& line = *lines;
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if (line.is_empty())
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break;
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bool appears_unordered = false;
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if (line.length() > 2) {
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if (line[1] == ' ' && (line[0] == '*' || line[0] == '-')) {
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appears_unordered = true;
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offset = 2;
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}
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}
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bool appears_ordered = false;
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for (size_t i = 0; i < 10 && i < line.length(); i++) {
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char ch = line[i];
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if ('0' <= ch && ch <= '9')
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continue;
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if (ch == '.' || ch == ')')
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if (i + 1 < line.length() && line[i + 1] == ' ') {
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appears_ordered = true;
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offset = i + 1;
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}
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break;
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}
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VERIFY(!(appears_unordered && appears_ordered));
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if (appears_unordered || appears_ordered) {
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if (first)
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is_ordered = appears_ordered;
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else if (is_ordered != appears_ordered)
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return {};
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if (!flush_item_if_needed())
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return {};
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while (offset + 1 < line.length() && line[offset + 1] == ' ')
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offset++;
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} else {
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if (first)
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return {};
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for (size_t i = 0; i < offset; i++) {
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if (line[i] != ' ')
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return {};
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}
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}
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first = false;
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if (!item_builder.is_empty())
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item_builder.append(' ');
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VERIFY(offset <= line.length());
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item_builder.append(line.substring_view(offset, line.length() - offset));
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++lines;
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offset = 0;
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}
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if (!flush_item_if_needed() || first)
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return {};
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return make<List>(move(items), is_ordered);
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}
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}
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