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'use strict';
var nanomatch = require('nanomatch');
var extglob = require('extglob');
module.exports = function(snapdragon) {
var compilers = snapdragon.compiler.compilers;
var opts = snapdragon.options;
// register nanomatch compilers
snapdragon.use(nanomatch.compilers);
// get references to some specific nanomatch compilers before they
// are overridden by the extglob and/or custom compilers
var escape = compilers.escape;
var qmark = compilers.qmark;
var slash = compilers.slash;
var star = compilers.star;
var text = compilers.text;
var plus = compilers.plus;
var dot = compilers.dot;
// register extglob compilers or escape exglobs if disabled
if (opts.extglob === false || opts.noext === true) {
snapdragon.compiler.use(escapeExtglobs);
} else {
snapdragon.use(extglob.compilers);
}
snapdragon.use(function() {
this.options.star = this.options.star || function(/*node*/) {
return '[^\\\\/]*?';
};
});
// custom micromatch compilers
snapdragon.compiler
// reset referenced compiler
.set('dot', dot)
.set('escape', escape)
.set('plus', plus)
.set('slash', slash)
.set('qmark', qmark)
.set('star', star)
.set('text', text);
};
function escapeExtglobs(compiler) {
compiler.set('paren', function(node) {
var val = '';
visit(node, function(tok) {
if (tok.val) val += (/^\W/.test(tok.val) ? '\\' : '') + tok.val;
});
return this.emit(val, node);
});
/**
* Visit `node` with the given `fn`
*/
function visit(node, fn) {
return node.nodes ? mapVisit(node.nodes, fn) : fn(node);
}
/**
* Map visit over array of `nodes`.
*/
function mapVisit(nodes, fn) {
var len = nodes.length;
var idx = -1;
while (++idx < len) {
visit(nodes[idx], fn);
}
}
}
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