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/*!
* MlingDisplay — client-side port of mingling_cli/src/utils/display.rs
*
* Parses the same markdown-ish markup used by `display.rs` and returns HTML
* with the equivalent ANSI styling applied as CSS classes / inline colors.
*
* Supported syntax:
* - Bold: **text**
* - Italic: *text*
* - Underline: _text_
* - Cyan: <text>
* - Inline code: `text` (green)
* - Colors: [[color_name]] ... [[/]] (nested)
* - Escapes: \* \< \> \` \_
* - Headings: # Heading 1 ... ###### Heading 6
* - Blockquote: > text
*
* Exposes: window.MlingDisplay.parse(text) -> HTML string
*/
(function () {
"use strict";
function findMatch(chars, start, delimiter) {
var len = delimiter.length;
for (var j = start; j < chars.length; j++) {
if (len === 1) {
if (chars[j] === delimiter) return j;
} else if (
j + 1 < chars.length &&
chars[j] === delimiter[0] &&
chars[j + 1] === delimiter[1]
) {
return j;
}
}
return -1;
}
var COLOR_MAP = {
black: "#000",
red: "#ff7b72",
green: "#7ee787",
yellow: "#d4a84b",
blue: "#79c0ff",
magenta: "#d2a8ff",
cyan: "#79c0ff",
white: "#e8ddd0",
b_white: "#e8ddd0",
bright_gray: "#6a5a4a",
bright_grey: "#6a5a4a",
b_gray: "#6a5a4a",
b_grey: "#6a5a4a",
bright_black: "#6a5a4a",
b_black: "#6a5a4a",
gray: "#6a5a4a",
grey: "#6a5a4a",
bright_red: "#ff7b72",
b_red: "#ff7b72",
bright_green: "#7ee787",
b_green: "#7ee787",
bright_yellow: "#d4a84b",
b_yellow: "#d4a84b",
bright_blue: "#79c0ff",
b_blue: "#79c0ff",
bright_magenta: "#d2a8ff",
b_magenta: "#d2a8ff",
bright_cyan: "#79c0ff",
b_cyan: "#79c0ff",
bright_white: "#e8ddd0",
};
function applyColorStack(text, stack) {
var wrapped = text;
for (var k = stack.length - 1; k >= 0; k--) {
var css = COLOR_MAP[stack[k]];
if (css) {
wrapped =
'<span style="color:' + css + '">' + wrapped + "</span>";
}
}
return wrapped;
}
function escapeHtml(s) {
return s
.replace(/&/g, "&")
.replace(/</g, "<")
.replace(/>/g, ">");
}
function processLine(line) {
var chars = Array.from(line);
var result = "";
var colorStack = [];
var i = 0;
while (i < chars.length) {
var c = chars[i];
// Escape sequences \\* \\< \\> \\` \\_
if (
c === "\\" &&
i + 1 < chars.length &&
["*", "<", ">", "`", "_"].indexOf(chars[i + 1]) !== -1
) {
result += escapeHtml(chars[i + 1]);
i += 2;
continue;
}
// Color tags [[color]] / [[/]]
if (c === "[" && chars[i + 1] === "[") {
var tagEnd = -1;
for (var t = i + 2; t + 1 < chars.length; t++) {
if (chars[t] === "]" && chars[t + 1] === "]") {
tagEnd = t;
break;
}
}
if (tagEnd !== -1) {
var tag = chars.slice(i + 2, tagEnd).join("");
if (tag === "/") colorStack.pop();
else colorStack.push(tag);
i = tagEnd + 2;
continue;
}
}
// **bold**
if (c === "*" && chars[i + 1] === "*") {
var bEnd = findMatch(chars, i + 2, "**");
if (bEnd !== -1) {
var inner = processLine(chars.slice(i + 2, bEnd).join(""));
result += applyColorStack(
"<b>" + inner + "</b>",
colorStack,
);
i = bEnd + 2;
continue;
}
}
// *italic*
if (c === "*") {
var iEnd = findMatch(chars, i + 1, "*");
if (iEnd !== -1) {
var italic = processLine(chars.slice(i + 1, iEnd).join(""));
result += applyColorStack(
"<i>" + italic + "</i>",
colorStack,
);
i = iEnd + 1;
continue;
}
}
// _underline_
if (c === "_") {
var uEnd = findMatch(chars, i + 1, "_");
if (uEnd !== -1) {
var uText = processLine(chars.slice(i + 1, uEnd).join(""));
result += applyColorStack(
"<u>" + uText + "</u>",
colorStack,
);
i = uEnd + 1;
continue;
}
}
// <angle> cyan
if (c === "<") {
var cEnd = findMatch(chars, i + 1, ">");
if (cEnd !== -1) {
var angle = chars.slice(i, cEnd + 1).join("");
result += applyColorStack(
'<span class="t-cyan">' + escapeHtml(angle) + "</span>",
colorStack,
);
i = cEnd + 1;
continue;
}
}
// `code` green
if (c === "`") {
var gEnd = findMatch(chars, i + 1, "`");
if (gEnd !== -1) {
var codeText = chars.slice(i, gEnd + 1).join("");
result += applyColorStack(
'<span class="t-green">' +
escapeHtml(codeText) +
"</span>",
colorStack,
);
i = gEnd + 1;
continue;
}
}
// Regular character
result += applyColorStack(escapeHtml(c), colorStack);
i += 1;
}
return result;
}
function processLineWithQuote(line) {
var chars = Array.from(line);
if (chars.length && chars[0] === ">") {
if (chars.length > 1 && chars[1] === "\\") {
return processLine(line);
}
var rest = chars.length > 1 ? chars.slice(1).join("") : "";
return '<span class="t-quote"> </span>' + processLine(rest);
}
return processLine(line);
}
/**
* Parse display.rs-flavored markup into HTML.
* @param {string} text - Raw markup text.
* @returns {string} HTML with t-cyan / t-green / t-heading / t-quote classes
* and inline colors for [[color]] tags.
*/
function parse(text) {
var lines = String(text).split("\n");
var result = "";
var contentIndent = 0;
for (var n = 0; n < lines.length; n++) {
var line = lines[n];
var trimmed = line.trim();
var ls = line.trimStart();
var lineResult = "";
if (ls.startsWith("#")) {
var level = 0;
while (level < ls.length && level < 7 && ls[level] === "#") {
level++;
}
var effective = level > 6 ? 6 : level;
var start = level;
while (
start < ls.length &&
(ls[start] === " " || ls[start] === "\t")
) {
start++;
}
var content = start < ls.length ? ls.slice(start) : "";
var heading =
'<span class="t-heading"> ' +
processLine(content) +
" </span>";
var indent = " ".repeat(effective > 0 ? effective - 1 : 0);
lineResult = indent + heading;
contentIndent = effective;
} else if (trimmed !== "") {
lineResult =
" ".repeat(contentIndent) + processLineWithQuote(trimmed);
} else {
lineResult = " ";
}
result += lineResult + "\n";
}
return result;
}
window.MlingDisplay = { parse: parse };
})();
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