'use strict';
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var brackets = require('expand-brackets');
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/**
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* Extglob compilers
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*/
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module.exports = function(extglob) {
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function star() {
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if (typeof extglob.options.star === 'function') {
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return extglob.options.star.apply(this, arguments);
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}
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if (typeof extglob.options.star === 'string') {
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return extglob.options.star;
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}
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return '.*?';
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}
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/**
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* Use `expand-brackets` compilers
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*/
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extglob.use(brackets.compilers);
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extglob.compiler
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/**
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* Escaped: "\\*"
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*/
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.set('escape', function(node) {
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return this.emit(node.val, node);
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})
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/**
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* Dot: "."
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*/
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.set('dot', function(node) {
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return this.emit('\\' + node.val, node);
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})
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/**
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* Question mark: "?"
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*/
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.set('qmark', function(node) {
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var val = '[^\\\\/.]';
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var prev = this.prev();
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if (node.parsed.slice(-1) === '(') {
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var ch = node.rest.charAt(0);
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if (ch !== '!' && ch !== '=' && ch !== ':') {
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return this.emit(val, node);
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}
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return this.emit(node.val, node);
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}
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if (prev.type === 'text' && prev.val) {
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return this.emit(val, node);
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}
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if (node.val.length > 1) {
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val += '{' + node.val.length + '}';
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}
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return this.emit(val, node);
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})
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/**
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* Plus: "+"
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*/
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.set('plus', function(node) {
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var prev = node.parsed.slice(-1);
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if (prev === ']' || prev === ')') {
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return this.emit(node.val, node);
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}
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var ch = this.output.slice(-1);
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if (!this.output || (/[?*+]/.test(ch) && node.parent.type !== 'bracket')) {
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return this.emit('\\+', node);
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}
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if (/\w/.test(ch) && !node.inside) {
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return this.emit('+\\+?', node);
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}
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return this.emit('+', node);
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})
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/**
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* Star: "*"
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*/
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.set('star', function(node) {
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var prev = this.prev();
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var prefix = prev.type !== 'text' && prev.type !== 'escape'
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? '(?!\\.)'
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: '';
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return this.emit(prefix + star.call(this, node), node);
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})
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/**
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* Parens
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*/
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.set('paren', function(node) {
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return this.mapVisit(node.nodes);
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})
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.set('paren.open', function(node) {
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var capture = this.options.capture ? '(' : '';
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switch (node.parent.prefix) {
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case '!':
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case '^':
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return this.emit(capture + '(?:(?!(?:', node);
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case '*':
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case '+':
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case '?':
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case '@':
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return this.emit(capture + '(?:', node);
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default: {
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var val = node.val;
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if (this.options.bash === true) {
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val = '\\' + val;
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} else if (!this.options.capture && val === '(' && node.parent.rest[0] !== '?') {
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val += '?:';
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}
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return this.emit(val, node);
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}
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}
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})
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.set('paren.close', function(node) {
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var capture = this.options.capture ? ')' : '';
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switch (node.prefix) {
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case '!':
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case '^':
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var prefix = /^(\)|$)/.test(node.rest) ? '$' : '';
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var str = star.call(this, node);
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// if the extglob has a slash explicitly defined, we know the user wants
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// to match slashes, so we need to ensure the "star" regex allows for it
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if (node.parent.hasSlash && !this.options.star && this.options.slash !== false) {
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str = '.*?';
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}
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return this.emit(prefix + ('))' + str + ')') + capture, node);
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case '*':
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case '+':
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case '?':
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return this.emit(')' + node.prefix + capture, node);
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case '@':
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return this.emit(')' + capture, node);
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default: {
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var val = (this.options.bash === true ? '\\' : '') + ')';
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return this.emit(val, node);
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}
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}
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})
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/**
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* Text
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*/
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.set('text', function(node) {
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var val = node.val.replace(/[\[\]]/g, '\\$&');
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return this.emit(val, node);
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});
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};
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