--- /dev/null
+'use strict';
+
+var regexNot = require('regex-not');
+var toRegex = require('to-regex');
+
+/**
+ * Characters to use in negation regex (we want to "not" match
+ * characters that are matched by other parsers)
+ */
+
+var cached;
+var NOT_REGEX = '[\\[!*+?$^"\'.\\\\/]+';
+var not = createTextRegex(NOT_REGEX);
+
+/**
+ * Nanomatch parsers
+ */
+
+module.exports = function(nanomatch, options) {
+ var parser = nanomatch.parser;
+ var opts = parser.options;
+
+ parser.state = {
+ slashes: 0,
+ paths: []
+ };
+
+ parser.ast.state = parser.state;
+ parser
+
+ /**
+ * Beginning-of-string
+ */
+
+ .capture('prefix', function() {
+ if (this.parsed) return;
+ var m = this.match(/^\.[\\/]/);
+ if (!m) return;
+ this.state.strictOpen = !!this.options.strictOpen;
+ this.state.addPrefix = true;
+ })
+
+ /**
+ * Escape: "\\."
+ */
+
+ .capture('escape', function() {
+ if (this.isInside('bracket')) return;
+ var pos = this.position();
+ var m = this.match(/^(?:\\(.)|([$^]))/);
+ if (!m) return;
+
+ return pos({
+ type: 'escape',
+ val: m[2] || m[1]
+ });
+ })
+
+ /**
+ * Quoted strings
+ */
+
+ .capture('quoted', function() {
+ var pos = this.position();
+ var m = this.match(/^["']/);
+ if (!m) return;
+
+ var quote = m[0];
+ if (this.input.indexOf(quote) === -1) {
+ return pos({
+ type: 'escape',
+ val: quote
+ });
+ }
+
+ var tok = advanceTo(this.input, quote);
+ this.consume(tok.len);
+
+ return pos({
+ type: 'quoted',
+ val: tok.esc
+ });
+ })
+
+ /**
+ * Negations: "!"
+ */
+
+ .capture('not', function() {
+ var parsed = this.parsed;
+ var pos = this.position();
+ var m = this.match(this.notRegex || /^!+/);
+ if (!m) return;
+ var val = m[0];
+
+ var isNegated = (val.length % 2) === 1;
+ if (parsed === '' && !isNegated) {
+ val = '';
+ }
+
+ // if nothing has been parsed, we know `!` is at the start,
+ // so we need to wrap the result in a negation regex
+ if (parsed === '' && isNegated && this.options.nonegate !== true) {
+ this.bos.val = '(?!^(?:';
+ this.append = ')$).*';
+ val = '';
+ }
+ return pos({
+ type: 'not',
+ val: val
+ });
+ })
+
+ /**
+ * Dot: "."
+ */
+
+ .capture('dot', function() {
+ var parsed = this.parsed;
+ var pos = this.position();
+ var m = this.match(/^\.+/);
+ if (!m) return;
+
+ var val = m[0];
+ this.state.dot = val === '.' && (parsed === '' || parsed.slice(-1) === '/');
+
+ return pos({
+ type: 'dot',
+ dotfiles: this.state.dot,
+ val: val
+ });
+ })
+
+ /**
+ * Plus: "+"
+ */
+
+ .capture('plus', /^\+(?!\()/)
+
+ /**
+ * Question mark: "?"
+ */
+
+ .capture('qmark', function() {
+ var parsed = this.parsed;
+ var pos = this.position();
+ var m = this.match(/^\?+(?!\()/);
+ if (!m) return;
+
+ this.state.metachar = true;
+ this.state.qmark = true;
+
+ return pos({
+ type: 'qmark',
+ parsed: parsed,
+ val: m[0]
+ });
+ })
+
+ /**
+ * Globstar: "**"
+ */
+
+ .capture('globstar', function() {
+ var parsed = this.parsed;
+ var pos = this.position();
+ var m = this.match(/^\*{2}(?![*(])(?=[,)/]|$)/);
+ if (!m) return;
+
+ var type = opts.noglobstar !== true ? 'globstar' : 'star';
+ var node = pos({type: type, parsed: parsed});
+ this.state.metachar = true;
+
+ while (this.input.slice(0, 4) === '/**/') {
+ this.input = this.input.slice(3);
+ }
+
+ node.isInside = {
+ brace: this.isInside('brace'),
+ paren: this.isInside('paren')
+ };
+
+ if (type === 'globstar') {
+ this.state.globstar = true;
+ node.val = '**';
+
+ } else {
+ this.state.star = true;
+ node.val = '*';
+ }
+
+ return node;
+ })
+
+ /**
+ * Star: "*"
+ */
+
+ .capture('star', function() {
+ var pos = this.position();
+ var starRe = /^(?:\*(?![*(])|[*]{3,}(?!\()|[*]{2}(?![(/]|$)|\*(?=\*\())/;
+ var m = this.match(starRe);
+ if (!m) return;
+
+ this.state.metachar = true;
+ this.state.star = true;
+ return pos({
+ type: 'star',
+ val: m[0]
+ });
+ })
+
+ /**
+ * Slash: "/"
+ */
+
+ .capture('slash', function() {
+ var pos = this.position();
+ var m = this.match(/^\//);
+ if (!m) return;
+
+ this.state.slashes++;
+ return pos({
+ type: 'slash',
+ val: m[0]
+ });
+ })
+
+ /**
+ * Backslash: "\\"
+ */
+
+ .capture('backslash', function() {
+ var pos = this.position();
+ var m = this.match(/^\\(?![*+?(){}[\]'"])/);
+ if (!m) return;
+
+ var val = m[0];
+
+ if (this.isInside('bracket')) {
+ val = '\\';
+ } else if (val.length > 1) {
+ val = '\\\\';
+ }
+
+ return pos({
+ type: 'backslash',
+ val: val
+ });
+ })
+
+ /**
+ * Square: "[.]"
+ */
+
+ .capture('square', function() {
+ if (this.isInside('bracket')) return;
+ var pos = this.position();
+ var m = this.match(/^\[([^!^\\])\]/);
+ if (!m) return;
+
+ return pos({
+ type: 'square',
+ val: m[1]
+ });
+ })
+
+ /**
+ * Brackets: "[...]" (basic, this can be overridden by other parsers)
+ */
+
+ .capture('bracket', function() {
+ var pos = this.position();
+ var m = this.match(/^(?:\[([!^]?)([^\]]+|\]-)(\]|[^*+?]+)|\[)/);
+ if (!m) return;
+
+ var val = m[0];
+ var negated = m[1] ? '^' : '';
+ var inner = (m[2] || '').replace(/\\\\+/, '\\\\');
+ var close = m[3] || '';
+
+ if (m[2] && inner.length < m[2].length) {
+ val = val.replace(/\\\\+/, '\\\\');
+ }
+
+ var esc = this.input.slice(0, 2);
+ if (inner === '' && esc === '\\]') {
+ inner += esc;
+ this.consume(2);
+
+ var str = this.input;
+ var idx = -1;
+ var ch;
+
+ while ((ch = str[++idx])) {
+ this.consume(1);
+ if (ch === ']') {
+ close = ch;
+ break;
+ }
+ inner += ch;
+ }
+ }
+
+ return pos({
+ type: 'bracket',
+ val: val,
+ escaped: close !== ']',
+ negated: negated,
+ inner: inner,
+ close: close
+ });
+ })
+
+ /**
+ * Text
+ */
+
+ .capture('text', function() {
+ if (this.isInside('bracket')) return;
+ var pos = this.position();
+ var m = this.match(not);
+ if (!m || !m[0]) return;
+
+ return pos({
+ type: 'text',
+ val: m[0]
+ });
+ });
+
+ /**
+ * Allow custom parsers to be passed on options
+ */
+
+ if (options && typeof options.parsers === 'function') {
+ options.parsers(nanomatch.parser);
+ }
+};
+
+/**
+ * Advance to the next non-escaped character
+ */
+
+function advanceTo(input, endChar) {
+ var ch = input.charAt(0);
+ var tok = { len: 1, val: '', esc: '' };
+ var idx = 0;
+
+ function advance() {
+ if (ch !== '\\') {
+ tok.esc += '\\' + ch;
+ tok.val += ch;
+ }
+
+ ch = input.charAt(++idx);
+ tok.len++;
+
+ if (ch === '\\') {
+ advance();
+ advance();
+ }
+ }
+
+ while (ch && ch !== endChar) {
+ advance();
+ }
+ return tok;
+}
+
+/**
+ * Create text regex
+ */
+
+function createTextRegex(pattern) {
+ if (cached) return cached;
+ var opts = {contains: true, strictClose: false};
+ var not = regexNot.create(pattern, opts);
+ var re = toRegex('^(?:[*]\\((?=.)|' + not + ')', opts);
+ return (cached = re);
+}
+
+/**
+ * Expose negation string
+ */
+
+module.exports.not = NOT_REGEX;
projects / dotfiles / .git / blobdiff