command.js•1.19 kB
'use strict';
const normalizeArgs = (file, args = []) => {
if (!Array.isArray(args)) {
return [file];
}
return [file, ...args];
};
const NO_ESCAPE_REGEXP = /^[\w.-]+$/;
const DOUBLE_QUOTES_REGEXP = /"/g;
const escapeArg = arg => {
if (typeof arg !== 'string' || NO_ESCAPE_REGEXP.test(arg)) {
return arg;
}
return `"${arg.replace(DOUBLE_QUOTES_REGEXP, '\\"')}"`;
};
const joinCommand = (file, args) => {
return normalizeArgs(file, args).join(' ');
};
const getEscapedCommand = (file, args) => {
return normalizeArgs(file, args).map(arg => escapeArg(arg)).join(' ');
};
const SPACES_REGEXP = / +/g;
// Handle `execa.command()`
const parseCommand = command => {
const tokens = [];
for (const token of command.trim().split(SPACES_REGEXP)) {
// Allow spaces to be escaped by a backslash if not meant as a delimiter
const previousToken = tokens[tokens.length - 1];
if (previousToken && previousToken.endsWith('\\')) {
// Merge previous token with current one
tokens[tokens.length - 1] = `${previousToken.slice(0, -1)} ${token}`;
} else {
tokens.push(token);
}
}
return tokens;
};
module.exports = {
joinCommand,
getEscapedCommand,
parseCommand
};