mirror of
https://github.com/RGBCube/serenity
synced 2025-05-22 04:55:07 +00:00
2227a80f34
This patch adds contexts to line iterator for nesting list items and blockquotes. It also incidentally makes the api for LineIterator simpler, and will make it easier to add other containers in the future.
139 lines
3.7 KiB
C++
139 lines
3.7 KiB
C++
/*
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* Copyright (c) 2019-2020, Sergey Bugaev <bugaevc@serenityos.org>
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* Copyright (c) 2021, Peter Elliott <pelliott@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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#include <LibMarkdown/Paragraph.h>
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namespace Markdown {
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String List::render_to_html(bool) 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("<{}", tag);
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if (m_start_number != 1)
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builder.appendff(" start=\"{}\"", m_start_number);
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builder.append(">\n");
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for (auto& item : m_items) {
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builder.append("<li>");
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if (!m_is_tight || (item->blocks().size() != 0 && !dynamic_cast<Paragraph const*>(&(item->blocks()[0]))))
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builder.append("\n");
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builder.append(item->render_to_html(m_is_tight));
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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(LineIterator& lines)
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{
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Vector<OwnPtr<ContainerBlock>> items;
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bool first = true;
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bool is_ordered = false;
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bool is_tight = true;
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bool has_trailing_blank_lines = false;
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size_t start_number = 1;
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while (!lines.is_end()) {
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size_t offset = 0;
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const StringView& line = *lines;
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bool appears_unordered = false;
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while (offset < line.length() && line[offset] == ' ')
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++offset;
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if (offset + 2 <= line.length()) {
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if (line[offset + 1] == ' ' && (line[offset] == '*' || line[offset] == '-' || line[offset] == '+')) {
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appears_unordered = true;
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offset++;
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}
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}
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bool appears_ordered = false;
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for (size_t i = offset; 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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auto maybe_start_number = line.substring_view(offset, i - offset).to_uint<size_t>();
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if (!maybe_start_number.has_value())
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break;
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if (first)
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start_number = maybe_start_number.value();
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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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return {};
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break;
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}
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while (offset < line.length() && line[offset] == ' ')
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offset++;
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if (first) {
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is_ordered = appears_ordered;
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} else if (appears_ordered != is_ordered) {
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break;
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}
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is_tight = is_tight && !has_trailing_blank_lines;
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lines.push_context(LineIterator::Context::list_item(offset));
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auto list_item = ContainerBlock::parse(lines);
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is_tight = is_tight && !list_item->has_blank_lines();
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has_trailing_blank_lines = has_trailing_blank_lines || list_item->has_trailing_blank_lines();
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items.append(move(list_item));
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lines.pop_context();
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first = false;
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}
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return make<List>(move(items), is_ordered, is_tight, start_number);
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}
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}
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