initial commit: scaffolding

1 files changed, 226 insertions, 0 deletions

diff --git a/node_modules/shell-quote/parse.js b/node_modules/shell-quote/parse.js
new file mode 100644
index 0000000..71d2eea
--- /dev/null
+++ b/node_modules/shell-quote/parse.js
@@ -0,0 +1,226 @@
+'use strict';
+
+// '<(' is process substitution operator and
+// can be parsed the same as control operator
+var CONTROL = '(?:' + [
+	'\\|\\|',
+	'\\&\\&',
+	';;',
+	'\\|\\&',
+	'\\<\\(',
+	'\\<\\<\\<',
+	'>>',
+	'>\\&',
+	'<\\&',
+	'[&;()|<>]'
+].join('|') + ')';
+var controlRE = new RegExp('^' + CONTROL + '$');
+var META = '|&;()<> \\t';
+var SINGLE_QUOTE = '"((\\\\"|[^"])*?)"';
+var DOUBLE_QUOTE = '\'((\\\\\'|[^\'])*?)\'';
+var hash = /^#$/;
+
+var SQ = "'";
+var DQ = '"';
+var DS = '$';
+
+var TOKEN = '';
+var mult = 0x100000000; // Math.pow(16, 8);
+for (var i = 0; i < 4; i++) {
+	TOKEN += (mult * Math.random()).toString(16);
+}
+var startsWithToken = new RegExp('^' + TOKEN);
+
+function matchAll(s, r) {
+	var origIndex = r.lastIndex;
+
+	var matches = [];
+	var matchObj;
+
+	while ((matchObj = r.exec(s))) {
+		matches.push(matchObj);
+		if (r.lastIndex === matchObj.index) {
+			r.lastIndex += 1;
+		}
+	}
+
+	r.lastIndex = origIndex;
+
+	return matches;
+}
+
+function getVar(env, pre, key) {
+	var r = typeof env === 'function' ? env(key) : env[key];
+	if (typeof r === 'undefined' && key != '') {
+		r = '';
+	} else if (typeof r === 'undefined') {
+		r = '$';
+	}
+
+	if (typeof r === 'object') {
+		return pre + TOKEN + JSON.stringify(r) + TOKEN;
+	}
+	return pre + r;
+}
+
+function parseInternal(string, env, opts) {
+	if (!opts) {
+		opts = {};
+	}
+	var BS = opts.escape || '\\';
+	var BAREWORD = '(\\' + BS + '[\'"' + META + ']|[^\\s\'"' + META + '])+';
+
+	var chunker = new RegExp([
+		'(' + CONTROL + ')', // control chars
+		'(' + BAREWORD + '|' + SINGLE_QUOTE + '|' + DOUBLE_QUOTE + ')+'
+	].join('|'), 'g');
+
+	var matches = matchAll(string, chunker);
+
+	if (matches.length === 0) {
+		return [];
+	}
+	if (!env) {
+		env = {};
+	}
+
+	var commented = false;
+
+	return matches.map(function (match) {
+		var s = match[0];
+		if (!s || commented) {
+			return void undefined;
+		}
+		if (controlRE.test(s)) {
+			return { op: s };
+		}
+
+		// Hand-written scanner/parser for Bash quoting rules:
+		//
+		// 1. inside single quotes, all characters are printed literally.
+		// 2. inside double quotes, all characters are printed literally
+		//    except variables prefixed by '$' and backslashes followed by
+		//    either a double quote or another backslash.
+		// 3. outside of any quotes, backslashes are treated as escape
+		//    characters and not printed (unless they are themselves escaped)
+		// 4. quote context can switch mid-token if there is no whitespace
+		//     between the two quote contexts (e.g. all'one'"token" parses as
+		//     "allonetoken")
+		var quote = false;
+		var esc = false;
+		var out = '';
+		var isGlob = false;
+		var i;
+
+		function parseEnvVar() {
+			i += 1;
+			var varend;
+			var varname;
+			var char = s.charAt(i);
+
+			if (char === '{') {
+				i += 1;
+				if (s.charAt(i) === '}') {
+					throw new Error('Bad substitution: ' + s.slice(i - 2, i + 1));
+				}
+				varend = s.indexOf('}', i);
+				if (varend < 0) {
+					throw new Error('Bad substitution: ' + s.slice(i));
+				}
+				varname = s.slice(i, varend);
+				i = varend;
+			} else if ((/[*@#?$!_-]/).test(char)) {
+				varname = char;
+				i += 1;
+			} else {
+				var slicedFromI = s.slice(i);
+				varend = slicedFromI.match(/[^\w\d_]/);
+				if (!varend) {
+					varname = slicedFromI;
+					i = s.length;
+				} else {
+					varname = slicedFromI.slice(0, varend.index);
+					i += varend.index - 1;
+				}
+			}
+			return getVar(env, '', varname);
+		}
+
+		for (i = 0; i < s.length; i++) {
+			var c = s.charAt(i);
+			isGlob = isGlob || (!quote && (c === '*' || c === '?'));
+			if (esc) {
+				out += c;
+				esc = false;
+			} else if (quote) {
+				if (c === quote) {
+					quote = false;
+				} else if (quote == SQ) {
+					out += c;
+				} else { // Double quote
+					if (c === BS) {
+						i += 1;
+						c = s.charAt(i);
+						if (c === DQ || c === BS || c === DS) {
+							out += c;
+						} else {
+							out += BS + c;
+						}
+					} else if (c === DS) {
+						out += parseEnvVar();
+					} else {
+						out += c;
+					}
+				}
+			} else if (c === DQ || c === SQ) {
+				quote = c;
+			} else if (controlRE.test(c)) {
+				return { op: s };
+			} else if (hash.test(c)) {
+				commented = true;
+				var commentObj = { comment: string.slice(match.index + i + 1) };
+				if (out.length) {
+					return [out, commentObj];
+				}
+				return [commentObj];
+			} else if (c === BS) {
+				esc = true;
+			} else if (c === DS) {
+				out += parseEnvVar();
+			} else {
+				out += c;
+			}
+		}
+
+		if (isGlob) {
+			return { op: 'glob', pattern: out };
+		}
+
+		return out;
+	}).reduce(function (prev, arg) { // finalize parsed arguments
+		// TODO: replace this whole reduce with a concat
+		return typeof arg === 'undefined' ? prev : prev.concat(arg);
+	}, []);
+}
+
+module.exports = function parse(s, env, opts) {
+	var mapped = parseInternal(s, env, opts);
+	if (typeof env !== 'function') {
+		return mapped;
+	}
+	return mapped.reduce(function (acc, s) {
+		if (typeof s === 'object') {
+			return acc.concat(s);
+		}
+		var xs = s.split(RegExp('(' + TOKEN + '.*?' + TOKEN + ')', 'g'));
+		if (xs.length === 1) {
+			return acc.concat(xs[0]);
+		}
+		return acc.concat(xs.filter(Boolean).map(function (x) {
+			if (startsWithToken.test(x)) {
+				return JSON.parse(x.split(TOKEN)[1]);
+			}
+			return x;
+		}));
+	}, []);
+};