You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
135 lines
3.3 KiB
135 lines
3.3 KiB
'use strict';
|
|
const TEMPLATE_REGEX = /(?:\\(u(?:[a-f\d]{4}|\{[a-f\d]{1,6}\})|x[a-f\d]{2}|.))|(?:\{(~)?(\w+(?:\([^)]*\))?(?:\.\w+(?:\([^)]*\))?)*)(?:[ \t]|(?=\r?\n)))|(\})|((?:.|[\r\n\f])+?)/gi;
|
|
const STYLE_REGEX = /(?:^|\.)(\w+)(?:\(([^)]*)\))?/g;
|
|
const STRING_REGEX = /^(['"])((?:\\.|(?!\1)[^\\])*)\1$/;
|
|
const ESCAPE_REGEX = /\\(u(?:[a-f\d]{4}|{[a-f\d]{1,6}})|x[a-f\d]{2}|.)|([^\\])/gi;
|
|
|
|
const ESCAPES = new Map([
|
|
['n', '\n'],
|
|
['r', '\r'],
|
|
['t', '\t'],
|
|
['b', '\b'],
|
|
['f', '\f'],
|
|
['v', '\v'],
|
|
['0', '\0'],
|
|
['\\', '\\'],
|
|
['e', '\u001B'],
|
|
['a', '\u0007']
|
|
]);
|
|
|
|
function unescape(c) {
|
|
const u = c[0] === 'u';
|
|
const bracket = c[1] === '{';
|
|
|
|
if ((u && !bracket && c.length === 5) || (c[0] === 'x' && c.length === 3)) {
|
|
return String.fromCharCode(parseInt(c.slice(1), 16));
|
|
}
|
|
|
|
if (u && bracket) {
|
|
return String.fromCodePoint(parseInt(c.slice(2, -1), 16));
|
|
}
|
|
|
|
return ESCAPES.get(c) || c;
|
|
}
|
|
|
|
function parseArguments(name, arguments_) {
|
|
const results = [];
|
|
const chunks = arguments_.trim().split(/\s*,\s*/g);
|
|
let matches;
|
|
|
|
for (const chunk of chunks) {
|
|
const number = Number(chunk);
|
|
if (!Number.isNaN(number)) {
|
|
results.push(number);
|
|
} else if ((matches = chunk.match(STRING_REGEX))) {
|
|
results.push(matches[2].replace(ESCAPE_REGEX, (m, escape, character) => escape ? unescape(escape) : character));
|
|
} else {
|
|
throw new Error(`Invalid Chalk template style argument: ${chunk} (in style '${name}')`);
|
|
}
|
|
}
|
|
|
|
return results;
|
|
}
|
|
|
|
function parseStyle(style) {
|
|
STYLE_REGEX.lastIndex = 0;
|
|
|
|
const results = [];
|
|
let matches;
|
|
|
|
while ((matches = STYLE_REGEX.exec(style)) !== null) {
|
|
const name = matches[1];
|
|
|
|
if (matches[2]) {
|
|
const args = parseArguments(name, matches[2]);
|
|
results.push([name].concat(args));
|
|
} else {
|
|
results.push([name]);
|
|
}
|
|
}
|
|
|
|
return results;
|
|
}
|
|
|
|
function buildStyle(chalk, styles) {
|
|
const enabled = {};
|
|
|
|
for (const layer of styles) {
|
|
for (const style of layer.styles) {
|
|
enabled[style[0]] = layer.inverse ? null : style.slice(1);
|
|
}
|
|
}
|
|
|
|
let current = chalk;
|
|
for (const [styleName, styles] of Object.entries(enabled)) {
|
|
if (!Array.isArray(styles)) {
|
|
continue;
|
|
}
|
|
|
|
if (!(styleName in current)) {
|
|
throw new Error(`Unknown Chalk style: ${styleName}`);
|
|
}
|
|
|
|
current = styles.length > 0 ? current[styleName](...styles) : current[styleName];
|
|
}
|
|
|
|
return current;
|
|
}
|
|
|
|
module.exports = (chalk, temporary) => {
|
|
const styles = [];
|
|
const chunks = [];
|
|
let chunk = [];
|
|
|
|
// eslint-disable-next-line max-params
|
|
temporary.replace(TEMPLATE_REGEX, (m, escapeCharacter, inverse, style, close, character) => {
|
|
if (escapeCharacter) {
|
|
chunk.push(unescape(escapeCharacter));
|
|
} else if (style) {
|
|
const string = chunk.join('');
|
|
chunk = [];
|
|
chunks.push(styles.length === 0 ? string : buildStyle(chalk, styles)(string));
|
|
styles.push({inverse, styles: parseStyle(style)});
|
|
} else if (close) {
|
|
if (styles.length === 0) {
|
|
throw new Error('Found extraneous } in Chalk template literal');
|
|
}
|
|
|
|
chunks.push(buildStyle(chalk, styles)(chunk.join('')));
|
|
chunk = [];
|
|
styles.pop();
|
|
} else {
|
|
chunk.push(character);
|
|
}
|
|
});
|
|
|
|
chunks.push(chunk.join(''));
|
|
|
|
if (styles.length > 0) {
|
|
const errMessage = `Chalk template literal is missing ${styles.length} closing bracket${styles.length === 1 ? '' : 's'} (\`}\`)`;
|
|
throw new Error(errMessage);
|
|
}
|
|
|
|
return chunks.join('');
|
|
};
|