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Copy pathrender_html.js
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188 lines (153 loc) · 6.39 KB
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const PJSON = require("./pseudo_json")
let fs = require("fs"), mold = new (require("mold-template"))
let {transformTokens} = require("./transform")
let CodeMirror = require("codemirror/addon/runmode/runmode.node.js")
require("codemirror/mode/javascript/javascript.js")
require("codemirror/mode/xml/xml.js")
require("codemirror/mode/css/css.js")
require("codemirror/mode/htmlmixed/htmlmixed.js")
let file, epub = false
for (let arg of process.argv.slice(2)) {
if (arg == "--epub") epub = true
else if (file) throw new Error("Multiple input files")
else file = arg == "-" ? "/dev/stdin" : arg
}
if (!file) throw new Error("No input file")
let chapter = /^\d{2}_([^\.]+)/.exec(file) || [null, "hints"]
let {tokens, metadata} = transformTokens(require("./markdown").parse(fs.readFileSync(file, "utf8"), {}), {
defined: epub ? ["book", "html"] : ["interactive", "html"],
strip: epub ? "hints" : "",
takeTitle: true,
index: false
})
let close = epub ? "/" : ""
let chapters = fs.readdirSync(__dirname + "/..")
.filter(file => /^\d{2}_\w+\.md$/.test(file))
.sort()
.map(file => /^\d{2}_(\w+)\.md$/.exec(file)[1])
if (epub) chapters.push("hints")
function escapeChar(ch) {
return ch == "<" ? "<" : ch == ">" ? ">" : ch == "&" ? "&" : """
}
function escape(str) { return str.replace(/[<>&"]/g, escapeChar) }
function highlight(lang, text) {
if (lang == "html") lang = "text/html"
let result = ""
CodeMirror.runMode(text, lang, (text, style) => {
let esc = escape(text)
result += style ? `<span class="${style.replace(/^|\s+/g, "$&cm-")}">${esc}</span>` : esc
})
return result
}
function maybeSplitInlineCode(html) {
if (html.length <= 16) return html
return html.replace(/[.\/](?!\/)/g, `$&<wbr${close}>`)
}
const seenIDs = Object.create(null)
function anchor(token) {
let id = token.hashID
if (id in seenIDs) for (let i = 1;; i++) {
let ext = id + "_" + i
if (!(ext in seenIDs)) { id = ext; break }
}
seenIDs[id] = true
return `<a class="${id.charAt(0)}_ident" id="${id}" href="#${id}" tabindex="-1" role="presentation"></a>`
}
function attrs(token) {
return token.attrs ? token.attrs.map(([name, val]) => ` ${name}="${escape(String(val))}"`).join("") : ""
}
let linkedChapter = null
let renderer = {
fence(token) {
let config = /\S/.test(token.info) ? PJSON.parse(token.info) : {}
if (config.hidden) return "";
let lang = config.lang || "javascript"
return `\n\n<pre${attrs(token)} class="snippet cm-s-default" data-language="${lang}" ${config.focus ? " data-focus=\"true\"" : ""}${config.sandbox ? ` data-sandbox="${config.sandbox}"` : ""}${config.meta ? ` data-meta="${config.meta}"` : ""}>${anchor(token)}${highlight(lang, token.content.trimRight())}</pre>`
},
hardbreak() { return `<br${close}>` },
softbreak() { return " " },
text(token) {
let {content} = token
if (linkedChapter != null) content = content.replace(/\?/g, linkedChapter)
return escape(content)
},
paragraph_open(token) { return `\n\n<p${attrs(token)}>${anchor(token)}` },
paragraph_close() { return "</p>" },
heading_open(token) { return `\n\n<${token.tag}${attrs(token)}>${anchor(token)}` },
heading_close(token) { return `</${token.tag}>` },
bullet_list_open(token) { return `\n\n<ul${attrs(token)}>` },
bullet_list_close() { return `</ul>` },
ordered_list_open(token) { return `\n\n<ol${attrs(token)}>` },
ordered_list_close() { return `\n\n</ol>` },
list_item_open() { return "\n\n<li>" },
list_item_close() { return "</li>" },
table_open() { return "\n\n<table>" },
table_close() { return "\n\n</table>" },
tbody_open() { return "" },
tbody_close() { return "" },
tr_open() { return "\n\n<tr>" },
tr_close() { return "\n\n</tr>" },
td_open() { return "<td>" },
td_close() { return "</td>" },
html_block(token) { return token.content },
code_inline(token) { return `<code>${maybeSplitInlineCode(escape(token.content))}</code>` },
strong_open() { return "<strong>" },
strong_close() { return "</strong>" },
em_open() { return "<em>" },
em_close() { return "</em>" },
sub_open() { return "<sub>" },
sub_close() { return "</sub>" },
sup_open() { return "<sup>" },
sup_close() { return "</sup>" },
link_open(token) {
let alt = token.attrGet("alt"), href= token.attrGet("href")
let maybeChapter = /^(\w+)(#.*)?$/.exec(href)
if (maybeChapter && chapters.includes(maybeChapter[1])) {
let number = ""
if (maybeChapter[1] != "hints") {
linkedChapter = chapters.indexOf(maybeChapter[1])
number = pad(linkedChapter) + "_"
}
href = number + maybeChapter[1] + (epub ? ".xhtml" : ".html") + (maybeChapter[2] || "")
}
return `<a href="${escape(href)}"${alt ? ` alt="${escape(alt)}"` : ""}>`
},
link_close() { linkedChapter = null; return "</a>" },
inline(token) { return renderArray(token.children) },
meta_figure(token) {
let {url, alt, chapter} = token.args[0]
let className = !chapter ? null : "chapter" + (chapter == "true" ? "" : " " + chapter)
return `<figure${attrs(token)}${className ? ` class="${className}"` : ""}><img src="${escape(url)}" alt="${escape(alt)}"${close}></figure>`
},
meta_quote_open() { return "\n\n<blockquote>" },
meta_quote_close(token) {
let {author, title} = token.args[0] || {}
return (author ? `\n\n<footer>${escape(author)}${title ? `, <cite>${escape(title)}</cite>` : ""}</footer>` : "") +
"\n\n</blockquote>"
},
meta_keyname_open() { return "<span class=\"keyname\">" },
meta_keyname_close() { return "</span>" },
meta_hint_open() { return "\n\n<div class=\"solution\"><div class=\"solution-text\">" },
meta_hint_close() { return "\n\n</div></div>" }
}
function renderArray(tokens) {
let result = ""
for (let i = 0; i < tokens.length; i++) {
let token = tokens[i], f = renderer[token.type]
if (!f) throw new Error("No render function for " + token.type)
result += f(token)
}
return result
}
function pad(n) {
return (n < 10 ? "0" : "") + n
}
metadata.content = renderArray(tokens)
let index
if (chapter && (index = chapters.indexOf(chapter[1])) > -1) {
metadata.chap_num = index
if (index > 0) metadata.prev_link = `${pad(index - 1)}_${chapters[index - 1]}`
if (index < chapters.length - 1) metadata.next_link = `${pad(index + 1)}_${chapters[index + 1]}`
}
let template = mold.bake("chapter", fs.readFileSync(__dirname + `/${epub ? "epub_" : ""}chapter.html`, "utf8"))
console.log(template(metadata))