eve/dist/src/cli/dev/tui/markdown.js

Filesystem-first framework for durable backend AI agents that run anywhere.

import{visibleLength}from"./terminal-text.js";const ansi={bold:`\x1B[1m`,boldOff:`\x1B[22m`,italic:`\x1B[3m`,italicOff:`\x1B[23m`};function renderMarkdown(e){let t=e.split(`
`),n=[];for(let e=0;e<t.length;e+=1){let r=parseTable(t,e);if(r!=null){n.push(...renderTable(r)),e=r.endIndex-1;continue}n.push(renderMarkdownLine(t[e]??``))}return n.join(`
`)}function renderMarkdownLine(e){if(e.startsWith(`### `))return renderInlineMarkdown(`▶ ${e.slice(4)}`);if(e.startsWith(`## `))return renderInlineMarkdown(`■ ${e.slice(3)}`);if(e.startsWith(`# `))return renderInlineMarkdown(`█ ${e.slice(2)}`);let t=e.match(/^(\s*)[-+*]\s+(.*)$/);if(t){let[,e,n=``]=t;return renderInlineMarkdown(`${e}•${n.length>0?` ${n}`:``}`)}return/^\d+\. /.test(e)?renderInlineMarkdown(e.replace(/^(\d+)\. /,`$1. `)):e.startsWith(`> `)?renderInlineMarkdown(`│ ${e.slice(2)}`):renderInlineMarkdown(e)}function renderInlineMarkdown(e){let n=[];return e.replaceAll(/https?:\/\/\S+/g,e=>{let t=`\uE000${n.length}\uE001`;return n.push(e),t}).replaceAll(/`([^`]+)`/g,`$1`).replaceAll(/\*\*([^*\n]+)\*\*/g,`${ansi.bold}$1${ansi.boldOff}`).replaceAll(/__([^_\n]+)__/g,`${ansi.bold}$1${ansi.boldOff}`).replaceAll(/\*([^*\n]+)\*/g,`${ansi.italic}$1${ansi.italicOff}`).replaceAll(/_([^_\n]+)_/g,`${ansi.italic}$1${ansi.italicOff}`).replaceAll(/\uE000(\d+)\uE001/g,(e,t)=>n[Number(t)]??``)}function parseTable(e,t){let n=parseTableCells(e[t]??``);if(n==null||n.length<2)return;let r=parseTableCells(e[t+1]??``);if(r==null||r.length!==n.length)return;let i=parseTableAlignments(r);if(i==null)return;let a=[],o=t+2;for(;o<e.length;){let t=parseTableCells(e[o]??``);if(t==null)break;a.push(normalizeTableRow(t,n.length)),o+=1}return{alignments:i,endIndex:o,header:n,rows:a}}function parseTableCells(e){if(!e.includes(`|`))return;let t=e.trim();t.startsWith(`|`)&&(t=t.slice(1)),t.endsWith(`|`)&&!t.endsWith(`\\|`)&&(t=t.slice(0,-1));let n=[],r=``;for(let e=0;e<t.length;e+=1){let i=t[e],a=t[e+1];if(i===`\\`&&a===`|`){r+=`|`,e+=1;continue}if(i===`|`){n.push(r.trim()),r=``;continue}r+=i}return n.push(r.trim()),n}function parseTableAlignments(e){let t=[];for(let n of e){let e=n.match(/^(:)?-{3,}(:)?$/);if(e==null)return;let[,r,i]=e;t.push(r!=null&&i!=null?`center`:i==null?`left`:`right`)}return t}function normalizeTableRow(e,t){return Array.from({length:t},(t,n)=>e[n]??``)}function renderTable(n){let r=n.header.map(e=>`${ansi.bold}${renderInlineMarkdown(e)}${ansi.boldOff}`),i=n.rows.map(e=>e.map(renderInlineMarkdown)),a=[r,...i],o=n.alignments.map((t,n)=>Math.max(3,...a.map(t=>visibleLength(t[n]??``))));return[formatTableRow(r,o,n.alignments),o.map(e=>`─`.repeat(e)).join(`  `),...i.map(e=>formatTableRow(e,o,n.alignments))]}function formatTableRow(e,t,n){return e.map((e,r)=>alignTableCell(e,t[r]??0,n[r]??`left`)).join(`  `)}function alignTableCell(t,n,r){let i=Math.max(0,n-visibleLength(t));if(r===`right`)return`${` `.repeat(i)}${t}`;if(r===`center`){let e=Math.floor(i/2),n=i-e;return`${` `.repeat(e)}${t}${` `.repeat(n)}`}return`${t}${` `.repeat(i)}`}export{renderMarkdown};