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'use strict';
var path = require('path');
var isNegated = require('is-negated-glob');
module.exports = function (glob, options) {
// default options
var opts = options || {};
// ensure cwd is absolute
var cwd = unescape(opts.cwd ? opts.cwd : process.cwd());
cwd = path.resolve(cwd);
cwd = unixify(cwd);
cwd = escape(cwd);
var rootDir = opts.root;
// if `options.root` is defined, ensure it's absolute
if (rootDir) {
rootDir = unescape(rootDir);
rootDir = unixify(rootDir);
if (process.platform === 'win32' || !path.isAbsolute(rootDir)) {
rootDir = unixify(path.resolve(rootDir));
}
rootDir = escape(rootDir);
}
// store last character before glob is modified
var suffix = glob.slice(-1);
// check to see if glob is negated (and not a leading negated-extglob)
var ing = isNegated(glob);
glob = ing.pattern;
// trim starting ./ from glob patterns
if (glob.slice(0, 2) === './') {
glob = glob.slice(2);
}
// when the glob pattern is only a . use an empty string
if (glob.length === 1 && glob === '.') {
glob = '';
}
// make glob absolute
if (rootDir && glob.charAt(0) === '/') {
glob = join(rootDir, glob);
} else if (!path.isAbsolute(glob) || glob.slice(0, 1) === '\\') {
glob = join(cwd, glob);
}
// if glob had a trailing `/`, re-add it now in case it was removed
if (suffix === '/' && glob.slice(-1) !== '/') {
glob += '/';
}
// re-add leading `!` if it was removed
return ing.negated ? '!' + glob : glob;
};
function escape(path) {
return path.replace(/([({[\]})*?!])/g, '\\$1');
}
function unescape(path) {
return path.replace(/\\([({[\]})*?!])/g, '$1');
}
// Before calling unixify, we remove the escapes and then
// we add them back afterwards to avoid double-escaping
function unixify(filepath) {
return filepath.replace(/\\/g, '/');
}
function join(dir, glob) {
if (dir.charAt(dir.length - 1) === '/') {
dir = dir.slice(0, -1);
}
if (glob.charAt(0) === '/') {
glob = glob.slice(1);
}
if (!glob) return dir;
// Resolve `../` segements in the glob
while (glob.slice(0, 3) === '../') {
dir = dir.slice(0, dir.lastIndexOf('/'));
glob = glob.slice(3);
}
return dir + '/' + glob;
}
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