mirror of
https://github.com/QwenLM/qwen-code.git
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Run npm run format
- Also updated README.md accordingly. Part of https://b.corp.google.com/issues/411384603
This commit is contained in:
Taylor Mullen
committed by
N. Taylor Mullen
N. Taylor Mullen
parent
7928c1727f
commit
cfc697a96d
@@ -7,243 +7,356 @@ import { Text, Box } from 'ink';
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* and inline styles (bold, italic, strikethrough, code, links).
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*/
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export class MarkdownRenderer {
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/**
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* Renders INLINE markdown elements using an iterative approach.
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* Supports: **bold**, *italic*, _italic_, ~~strike~~, [link](url), `code`, ``code``, <u>underline</u>
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* @param text The string segment to parse for inline styles.
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* @returns An array of React nodes (Text components or strings).
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*/
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private static _renderInline(text: string): React.ReactNode[] {
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const nodes: React.ReactNode[] = [];
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let lastIndex = 0;
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// UPDATED Regex: Added <u>.*?<\/u> pattern
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const inlineRegex =
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/(\*\*.*?\*\*|\*.*?\*|_.*?_|~~.*?~~|\[.*?\]\(.*?\)|`+.+?`+|<u>.*?<\/u>)/g;
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let match;
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/**
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* Renders INLINE markdown elements using an iterative approach.
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* Supports: **bold**, *italic*, _italic_, ~~strike~~, [link](url), `code`, ``code``, <u>underline</u>
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* @param text The string segment to parse for inline styles.
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* @returns An array of React nodes (Text components or strings).
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*/
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private static _renderInline(text: string): React.ReactNode[] {
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const nodes: React.ReactNode[] = [];
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let lastIndex = 0;
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// UPDATED Regex: Added <u>.*?<\/u> pattern
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const inlineRegex = /(\*\*.*?\*\*|\*.*?\*|_.*?_|~~.*?~~|\[.*?\]\(.*?\)|`+.+?`+|<u>.*?<\/u>)/g;
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let match;
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while ((match = inlineRegex.exec(text)) !== null) {
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// 1. Add plain text before the match
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if (match.index > lastIndex) {
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nodes.push(<Text key={`t-${lastIndex}`}>{text.slice(lastIndex, match.index)}</Text>);
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}
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const fullMatch = match[0];
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let renderedNode: React.ReactNode = null;
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const key = `m-${match.index}`; // Base key for matched part
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// 2. Determine type of match and render accordingly
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try {
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if (fullMatch.startsWith('**') && fullMatch.endsWith('**') && fullMatch.length > 4) {
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renderedNode = <Text key={key} bold>{fullMatch.slice(2, -2)}</Text>;
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} else if (((fullMatch.startsWith('*') && fullMatch.endsWith('*')) || (fullMatch.startsWith('_') && fullMatch.endsWith('_'))) && fullMatch.length > 2) {
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renderedNode = <Text key={key} italic>{fullMatch.slice(1, -1)}</Text>;
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} else if (fullMatch.startsWith('~~') && fullMatch.endsWith('~~') && fullMatch.length > 4) {
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// Strikethrough as gray text
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renderedNode = <Text key={key} strikethrough>{fullMatch.slice(2, -2)}</Text>;
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} else if (fullMatch.startsWith('`') && fullMatch.endsWith('`') && fullMatch.length > 1) {
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// Code: Try to match varying numbers of backticks
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const codeMatch = fullMatch.match(/^(`+)(.+?)\1$/s);
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if (codeMatch && codeMatch[2]) {
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renderedNode = <Text key={key} color="yellow">{codeMatch[2]}</Text>;
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} else { // Fallback for simple or non-matching cases
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renderedNode = <Text key={key} color="yellow">{fullMatch.slice(1, -1)}</Text>;
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}
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} else if (fullMatch.startsWith('[') && fullMatch.includes('](') && fullMatch.endsWith(')')) {
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// Link: Extract text and URL
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const linkMatch = fullMatch.match(/\[(.*?)\]\((.*?)\)/);
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if (linkMatch) {
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const linkText = linkMatch[1];
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const url = linkMatch[2];
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// Render link text then URL slightly dimmed/colored
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renderedNode = (
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<Text key={key}>
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{linkText}
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<Text color="blue"> ({url})</Text>
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</Text>
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);
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}
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} else if (fullMatch.startsWith('<u>') && fullMatch.endsWith('</u>') && fullMatch.length > 6) {
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// ***** NEW: Handle underline tag *****
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// Use slice(3, -4) to remove <u> and </u>
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renderedNode = <Text key={key} underline>{fullMatch.slice(3, -4)}</Text>;
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}
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} catch (e) {
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// In case of regex or slicing errors, fallback to literal rendering
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console.error("Error parsing inline markdown part:", fullMatch, e);
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renderedNode = null; // Ensure fallback below is used
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}
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// 3. Add the rendered node or the literal text if parsing failed
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nodes.push(renderedNode ?? <Text key={key}>{fullMatch}</Text>);
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lastIndex = inlineRegex.lastIndex; // Move index past the current match
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}
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// 4. Add any remaining plain text after the last match
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if (lastIndex < text.length) {
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nodes.push(<Text key={`t-${lastIndex}`}>{text.slice(lastIndex)}</Text>);
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}
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// Filter out potential nulls if any error occurred without fallback
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return nodes.filter(node => node !== null);
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}
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/**
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* Helper to render a code block.
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*/
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private static _renderCodeBlock(key: string, content: string[], lang: string | null): React.ReactNode {
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// Basic styling for code block
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return (
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<Box key={key} borderStyle="round" paddingX={1} borderColor="gray" flexDirection="column">
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{lang && <Text dimColor> {lang}</Text>}
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{/* Render each line preserving whitespace (within Text component) */}
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{content.map((line, idx) => (
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<Text key={idx}>{line}</Text>
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))}
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</Box>
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while ((match = inlineRegex.exec(text)) !== null) {
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// 1. Add plain text before the match
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if (match.index > lastIndex) {
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nodes.push(
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<Text key={`t-${lastIndex}`}>
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{text.slice(lastIndex, match.index)}
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</Text>,
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);
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}
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}
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/**
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* Helper to render a list item (ordered or unordered).
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*/
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private static _renderListItem(key: string, text: string, type: 'ul' | 'ol', marker: string): React.ReactNode {
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const renderedText = MarkdownRenderer._renderInline(text); // Allow inline styles in list items
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const prefix = type === 'ol' ? `${marker} ` : `${marker} `; // e.g., "1. " or "* "
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const prefixWidth = prefix.length;
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const fullMatch = match[0];
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let renderedNode: React.ReactNode = null;
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const key = `m-${match.index}`; // Base key for matched part
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return (
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<Box key={key} paddingLeft={1} flexDirection="row">
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<Box width={prefixWidth}>
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<Text>{prefix}</Text>
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</Box>
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<Box flexGrow={1}>
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<Text wrap="wrap">{renderedText}</Text>
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</Box>
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</Box>
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);
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}
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/**
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* Renders a full markdown string, handling block elements (headers, lists, code blocks)
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* and applying inline styles. This is the main public static method.
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* @param text The full markdown string to render.
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* @returns An array of React nodes representing markdown blocks.
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*/
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public static render(text: string): React.ReactNode[] {
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if (!text) return [];
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const lines = text.split('\n');
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// Regexes for block elements
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const headerRegex = /^ *(#{1,4}) +(.*)/;
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const codeFenceRegex = /^ *(`{3,}|~{3,}) *(\S*?) *$/; // ```lang or ``` or ~~~
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const ulItemRegex = /^ *([-*+]) +(.*)/; // Unordered list item, captures bullet and text
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const olItemRegex = /^ *(\d+)\. +(.*)/; // Ordered list item, captures number and text
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const hrRegex = /^ *([-*_] *){3,} *$/; // Horizontal rule
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const contentBlocks: React.ReactNode[] = [];
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// State for parsing across lines
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let inCodeBlock = false;
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let codeBlockContent: string[] = [];
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let codeBlockLang: string | null = null;
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let codeBlockFence = ''; // Store the type of fence used (``` or ~~~)
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let inListType: 'ul' | 'ol' | null = null; // Track current list type to group items
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lines.forEach((line, index) => {
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const key = `line-${index}`;
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// --- State 1: Inside a Code Block ---
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if (inCodeBlock) {
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const fenceMatch = line.match(codeFenceRegex);
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// Check for closing fence, matching the opening one and length
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if (fenceMatch && fenceMatch[1].startsWith(codeBlockFence[0]) && fenceMatch[1].length >= codeBlockFence.length) {
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// End of code block - render it
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contentBlocks.push(MarkdownRenderer._renderCodeBlock(key, codeBlockContent, codeBlockLang));
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// Reset state
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inCodeBlock = false;
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codeBlockContent = [];
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codeBlockLang = null;
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codeBlockFence = '';
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inListType = null; // Ensure list context is reset
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} else {
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// Add line to current code block content
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codeBlockContent.push(line);
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}
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return; // Process next line
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}
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// --- State 2: Not Inside a Code Block ---
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// Check for block element starts in rough order of precedence/commonness
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const codeFenceMatch = line.match(codeFenceRegex);
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const headerMatch = line.match(headerRegex);
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const ulMatch = line.match(ulItemRegex);
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const olMatch = line.match(olItemRegex);
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const hrMatch = line.match(hrRegex);
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if (codeFenceMatch) {
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inCodeBlock = true;
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codeBlockFence = codeFenceMatch[1];
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codeBlockLang = codeFenceMatch[2] || null;
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inListType = null; // Starting code block breaks list
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} else if (hrMatch) {
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// Render Horizontal Rule (simple dashed line)
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// Use box with height and border character, or just Text with dashes
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contentBlocks.push(<Box key={key}><Text dimColor>---</Text></Box>);
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inListType = null; // HR breaks list
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} else if (headerMatch) {
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const level = headerMatch[1].length;
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const headerText = headerMatch[2];
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const renderedHeaderText = MarkdownRenderer._renderInline(headerText);
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let headerNode: React.ReactNode = null;
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switch (level) { /* ... (header styling as before) ... */
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case 1: headerNode = <Text bold color="cyan">{renderedHeaderText}</Text>; break;
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case 2: headerNode = <Text bold color="blue">{renderedHeaderText}</Text>; break;
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case 3: headerNode = <Text bold>{renderedHeaderText}</Text>; break;
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case 4: headerNode = <Text italic color="gray">{renderedHeaderText}</Text>; break;
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}
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if (headerNode) contentBlocks.push(<Box key={key}>{headerNode}</Box>);
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inListType = null; // Header breaks list
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} else if (ulMatch) {
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const marker = ulMatch[1]; // *, -, or +
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const itemText = ulMatch[2];
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// If previous line was not UL, maybe add spacing? For now, just render item.
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contentBlocks.push(MarkdownRenderer._renderListItem(key, itemText, 'ul', marker));
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inListType = 'ul'; // Set/maintain list context
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} else if (olMatch) {
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const marker = olMatch[1]; // The number
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const itemText = olMatch[2];
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contentBlocks.push(MarkdownRenderer._renderListItem(key, itemText, 'ol', marker));
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inListType = 'ol'; // Set/maintain list context
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} else {
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// --- Regular line (Paragraph or Empty line) ---
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inListType = null; // Any non-list line breaks the list sequence
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// Render line content if it's not blank, applying inline styles
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const renderedLine = MarkdownRenderer._renderInline(line);
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if (renderedLine.length > 0 || line.length > 0) { // Render lines with content or only whitespace
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contentBlocks.push(
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<Box key={key}>
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<Text wrap="wrap">{renderedLine}</Text>
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</Box>
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);
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} else if (line.trim().length === 0) { // Handle specifically empty lines
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// Add minimal space for blank lines between paragraphs/blocks
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if (contentBlocks.length > 0 && !inCodeBlock) { // Avoid adding space inside code block state (handled above)
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const previousBlock = contentBlocks[contentBlocks.length - 1];
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// Avoid adding multiple blank lines consecutively easily - check if previous was also blank?
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// For now, add a minimal spacer for any blank line outside code blocks.
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contentBlocks.push(<Box key={key} height={1} />);
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}
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}
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}
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});
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// Handle unclosed code block at the end of the input
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if (inCodeBlock) {
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contentBlocks.push(MarkdownRenderer._renderCodeBlock(`line-eof`, codeBlockContent, codeBlockLang));
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// 2. Determine type of match and render accordingly
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try {
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if (
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fullMatch.startsWith('**') &&
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fullMatch.endsWith('**') &&
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fullMatch.length > 4
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) {
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renderedNode = (
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<Text key={key} bold>
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{fullMatch.slice(2, -2)}
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</Text>
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);
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} else if (
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((fullMatch.startsWith('*') && fullMatch.endsWith('*')) ||
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(fullMatch.startsWith('_') && fullMatch.endsWith('_'))) &&
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fullMatch.length > 2
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) {
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renderedNode = (
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<Text key={key} italic>
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{fullMatch.slice(1, -1)}
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</Text>
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);
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} else if (
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fullMatch.startsWith('~~') &&
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fullMatch.endsWith('~~') &&
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fullMatch.length > 4
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) {
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// Strikethrough as gray text
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renderedNode = (
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<Text key={key} strikethrough>
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{fullMatch.slice(2, -2)}
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</Text>
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);
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} else if (
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fullMatch.startsWith('`') &&
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fullMatch.endsWith('`') &&
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fullMatch.length > 1
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) {
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// Code: Try to match varying numbers of backticks
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const codeMatch = fullMatch.match(/^(`+)(.+?)\1$/s);
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if (codeMatch && codeMatch[2]) {
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renderedNode = (
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<Text key={key} color="yellow">
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{codeMatch[2]}
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</Text>
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);
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} else {
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// Fallback for simple or non-matching cases
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renderedNode = (
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<Text key={key} color="yellow">
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{fullMatch.slice(1, -1)}
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</Text>
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);
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}
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} else if (
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fullMatch.startsWith('[') &&
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fullMatch.includes('](') &&
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fullMatch.endsWith(')')
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) {
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// Link: Extract text and URL
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const linkMatch = fullMatch.match(/\[(.*?)\]\((.*?)\)/);
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if (linkMatch) {
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const linkText = linkMatch[1];
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const url = linkMatch[2];
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// Render link text then URL slightly dimmed/colored
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renderedNode = (
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<Text key={key}>
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{linkText}
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<Text color="blue"> ({url})</Text>
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</Text>
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);
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}
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} else if (
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fullMatch.startsWith('<u>') &&
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fullMatch.endsWith('</u>') &&
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fullMatch.length > 6
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) {
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// ***** NEW: Handle underline tag *****
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// Use slice(3, -4) to remove <u> and </u>
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renderedNode = (
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<Text key={key} underline>
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{fullMatch.slice(3, -4)}
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</Text>
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);
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}
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} catch (e) {
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// In case of regex or slicing errors, fallback to literal rendering
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console.error('Error parsing inline markdown part:', fullMatch, e);
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renderedNode = null; // Ensure fallback below is used
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}
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return contentBlocks;
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// 3. Add the rendered node or the literal text if parsing failed
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nodes.push(renderedNode ?? <Text key={key}>{fullMatch}</Text>);
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lastIndex = inlineRegex.lastIndex; // Move index past the current match
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}
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}
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// 4. Add any remaining plain text after the last match
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if (lastIndex < text.length) {
|
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nodes.push(<Text key={`t-${lastIndex}`}>{text.slice(lastIndex)}</Text>);
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}
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|
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// Filter out potential nulls if any error occurred without fallback
|
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return nodes.filter((node) => node !== null);
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}
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|
||||
/**
|
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* Helper to render a code block.
|
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*/
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private static _renderCodeBlock(
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key: string,
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content: string[],
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||||
lang: string | null,
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): React.ReactNode {
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// Basic styling for code block
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return (
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<Box
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||||
key={key}
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||||
borderStyle="round"
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||||
paddingX={1}
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||||
borderColor="gray"
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||||
flexDirection="column"
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>
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||||
{lang && <Text dimColor> {lang}</Text>}
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||||
{/* Render each line preserving whitespace (within Text component) */}
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||||
{content.map((line, idx) => (
|
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<Text key={idx}>{line}</Text>
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||||
))}
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</Box>
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||||
);
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}
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/**
|
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* Helper to render a list item (ordered or unordered).
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||||
*/
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private static _renderListItem(
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key: string,
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text: string,
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type: 'ul' | 'ol',
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marker: string,
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||||
): React.ReactNode {
|
||||
const renderedText = MarkdownRenderer._renderInline(text); // Allow inline styles in list items
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||||
const prefix = type === 'ol' ? `${marker} ` : `${marker} `; // e.g., "1. " or "* "
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const prefixWidth = prefix.length;
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|
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return (
|
||||
<Box key={key} paddingLeft={1} flexDirection="row">
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||||
<Box width={prefixWidth}>
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||||
<Text>{prefix}</Text>
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</Box>
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<Box flexGrow={1}>
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||||
<Text wrap="wrap">{renderedText}</Text>
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</Box>
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</Box>
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||||
);
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}
|
||||
|
||||
/**
|
||||
* Renders a full markdown string, handling block elements (headers, lists, code blocks)
|
||||
* and applying inline styles. This is the main public static method.
|
||||
* @param text The full markdown string to render.
|
||||
* @returns An array of React nodes representing markdown blocks.
|
||||
*/
|
||||
public static render(text: string): React.ReactNode[] {
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||||
if (!text) return [];
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||||
|
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const lines = text.split('\n');
|
||||
// Regexes for block elements
|
||||
const headerRegex = /^ *(#{1,4}) +(.*)/;
|
||||
const codeFenceRegex = /^ *(`{3,}|~{3,}) *(\S*?) *$/; // ```lang or ``` or ~~~
|
||||
const ulItemRegex = /^ *([-*+]) +(.*)/; // Unordered list item, captures bullet and text
|
||||
const olItemRegex = /^ *(\d+)\. +(.*)/; // Ordered list item, captures number and text
|
||||
const hrRegex = /^ *([-*_] *){3,} *$/; // Horizontal rule
|
||||
|
||||
const contentBlocks: React.ReactNode[] = [];
|
||||
// State for parsing across lines
|
||||
let inCodeBlock = false;
|
||||
let codeBlockContent: string[] = [];
|
||||
let codeBlockLang: string | null = null;
|
||||
let codeBlockFence = ''; // Store the type of fence used (``` or ~~~)
|
||||
let inListType: 'ul' | 'ol' | null = null; // Track current list type to group items
|
||||
|
||||
lines.forEach((line, index) => {
|
||||
const key = `line-${index}`;
|
||||
|
||||
// --- State 1: Inside a Code Block ---
|
||||
if (inCodeBlock) {
|
||||
const fenceMatch = line.match(codeFenceRegex);
|
||||
// Check for closing fence, matching the opening one and length
|
||||
if (
|
||||
fenceMatch &&
|
||||
fenceMatch[1].startsWith(codeBlockFence[0]) &&
|
||||
fenceMatch[1].length >= codeBlockFence.length
|
||||
) {
|
||||
// End of code block - render it
|
||||
contentBlocks.push(
|
||||
MarkdownRenderer._renderCodeBlock(
|
||||
key,
|
||||
codeBlockContent,
|
||||
codeBlockLang,
|
||||
),
|
||||
);
|
||||
// Reset state
|
||||
inCodeBlock = false;
|
||||
codeBlockContent = [];
|
||||
codeBlockLang = null;
|
||||
codeBlockFence = '';
|
||||
inListType = null; // Ensure list context is reset
|
||||
} else {
|
||||
// Add line to current code block content
|
||||
codeBlockContent.push(line);
|
||||
}
|
||||
return; // Process next line
|
||||
}
|
||||
|
||||
// --- State 2: Not Inside a Code Block ---
|
||||
// Check for block element starts in rough order of precedence/commonness
|
||||
const codeFenceMatch = line.match(codeFenceRegex);
|
||||
const headerMatch = line.match(headerRegex);
|
||||
const ulMatch = line.match(ulItemRegex);
|
||||
const olMatch = line.match(olItemRegex);
|
||||
const hrMatch = line.match(hrRegex);
|
||||
|
||||
if (codeFenceMatch) {
|
||||
inCodeBlock = true;
|
||||
codeBlockFence = codeFenceMatch[1];
|
||||
codeBlockLang = codeFenceMatch[2] || null;
|
||||
inListType = null; // Starting code block breaks list
|
||||
} else if (hrMatch) {
|
||||
// Render Horizontal Rule (simple dashed line)
|
||||
// Use box with height and border character, or just Text with dashes
|
||||
contentBlocks.push(
|
||||
<Box key={key}>
|
||||
<Text dimColor>---</Text>
|
||||
</Box>,
|
||||
);
|
||||
inListType = null; // HR breaks list
|
||||
} else if (headerMatch) {
|
||||
const level = headerMatch[1].length;
|
||||
const headerText = headerMatch[2];
|
||||
const renderedHeaderText = MarkdownRenderer._renderInline(headerText);
|
||||
let headerNode: React.ReactNode = null;
|
||||
switch (level /* ... (header styling as before) ... */) {
|
||||
case 1:
|
||||
headerNode = (
|
||||
<Text bold color="cyan">
|
||||
{renderedHeaderText}
|
||||
</Text>
|
||||
);
|
||||
break;
|
||||
case 2:
|
||||
headerNode = (
|
||||
<Text bold color="blue">
|
||||
{renderedHeaderText}
|
||||
</Text>
|
||||
);
|
||||
break;
|
||||
case 3:
|
||||
headerNode = <Text bold>{renderedHeaderText}</Text>;
|
||||
break;
|
||||
case 4:
|
||||
headerNode = (
|
||||
<Text italic color="gray">
|
||||
{renderedHeaderText}
|
||||
</Text>
|
||||
);
|
||||
break;
|
||||
}
|
||||
if (headerNode) contentBlocks.push(<Box key={key}>{headerNode}</Box>);
|
||||
inListType = null; // Header breaks list
|
||||
} else if (ulMatch) {
|
||||
const marker = ulMatch[1]; // *, -, or +
|
||||
const itemText = ulMatch[2];
|
||||
// If previous line was not UL, maybe add spacing? For now, just render item.
|
||||
contentBlocks.push(
|
||||
MarkdownRenderer._renderListItem(key, itemText, 'ul', marker),
|
||||
);
|
||||
inListType = 'ul'; // Set/maintain list context
|
||||
} else if (olMatch) {
|
||||
const marker = olMatch[1]; // The number
|
||||
const itemText = olMatch[2];
|
||||
contentBlocks.push(
|
||||
MarkdownRenderer._renderListItem(key, itemText, 'ol', marker),
|
||||
);
|
||||
inListType = 'ol'; // Set/maintain list context
|
||||
} else {
|
||||
// --- Regular line (Paragraph or Empty line) ---
|
||||
inListType = null; // Any non-list line breaks the list sequence
|
||||
|
||||
// Render line content if it's not blank, applying inline styles
|
||||
const renderedLine = MarkdownRenderer._renderInline(line);
|
||||
if (renderedLine.length > 0 || line.length > 0) {
|
||||
// Render lines with content or only whitespace
|
||||
contentBlocks.push(
|
||||
<Box key={key}>
|
||||
<Text wrap="wrap">{renderedLine}</Text>
|
||||
</Box>,
|
||||
);
|
||||
} else if (line.trim().length === 0) {
|
||||
// Handle specifically empty lines
|
||||
// Add minimal space for blank lines between paragraphs/blocks
|
||||
if (contentBlocks.length > 0 && !inCodeBlock) {
|
||||
// Avoid adding space inside code block state (handled above)
|
||||
const previousBlock = contentBlocks[contentBlocks.length - 1];
|
||||
// Avoid adding multiple blank lines consecutively easily - check if previous was also blank?
|
||||
// For now, add a minimal spacer for any blank line outside code blocks.
|
||||
contentBlocks.push(<Box key={key} height={1} />);
|
||||
}
|
||||
}
|
||||
}
|
||||
});
|
||||
|
||||
// Handle unclosed code block at the end of the input
|
||||
if (inCodeBlock) {
|
||||
contentBlocks.push(
|
||||
MarkdownRenderer._renderCodeBlock(
|
||||
`line-eof`,
|
||||
codeBlockContent,
|
||||
codeBlockLang,
|
||||
),
|
||||
);
|
||||
}
|
||||
|
||||
return contentBlocks;
|
||||
}
|
||||
}
|
||||
|
||||
Reference in New Issue
Block a user