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'use strict';
var fs = require('fs');
var path = require('path');
var isString = require('lodash.isstring');
var isPlainObject = require('lodash.isplainobject');
var isEmpty = require('lodash.isempty');
var pick = require('lodash.pick');
var assignWith = require('lodash.assignwith');
var expandTilde = require('expand-tilde');
var parsePath = require('parse-filepath');
function assignNullish(objValue, srcValue) {
return (srcValue == null ? objValue : srcValue);
}
function defaults(mainObj, defaultObj) {
return assignWith({}, defaultObj, mainObj, assignNullish);
}
function fined(pathObj, defaultObj) {
var expandedPath = expandPath(pathObj, defaultObj);
return expandedPath ? findWithExpandedPath(expandedPath) : null;
}
function expandPath(pathObj, defaultObj) {
if (!isPlainObject(defaultObj)) {
defaultObj = {};
}
if (isString(pathObj)) {
pathObj = { path: pathObj };
}
if (!isPlainObject(pathObj)) {
pathObj = {};
}
pathObj = defaults(pathObj, defaultObj);
var filePath;
if (!isString(pathObj.path)) {
return null;
}
// Execution of toString is for a String object.
if (isString(pathObj.name) && pathObj.name) {
if (pathObj.path) {
filePath = expandTilde(pathObj.path.toString());
filePath = path.join(filePath, pathObj.name.toString());
} else {
filePath = pathObj.name.toString();
}
} else {
filePath = expandTilde(pathObj.path.toString());
}
var extArr = createExtensionArray(pathObj.extensions);
var extMap = createExtensionMap(pathObj.extensions);
var basedir = isString(pathObj.cwd) ? pathObj.cwd.toString() : '.';
basedir = path.resolve(expandTilde(basedir));
var findUp = !!pathObj.findUp;
var parsed = parsePath(filePath);
if (parsed.isAbsolute) {
filePath = filePath.slice(parsed.root.length);
findUp = false;
basedir = parsed.root;
} else if (parsed.root) { // Expanded path has a drive letter on Windows.
filePath = filePath.slice(parsed.root.length);
basedir = path.resolve(parsed.root);
}
return {
path: filePath,
basedir: basedir,
findUp: findUp,
extArr: extArr,
extMap: extMap,
};
}
function findWithExpandedPath(expanded) {
var found = expanded.findUp ?
findUpFile(expanded.basedir, expanded.path, expanded.extArr) :
findFile(expanded.basedir, expanded.path, expanded.extArr);
if (!found) {
return null;
}
if (expanded.extMap) {
found.extension = pick(expanded.extMap, found.extension);
}
return found;
}
function findFile(basedir, relpath, extArr) {
var noExtPath = path.resolve(basedir, relpath);
for (var i = 0, n = extArr.length; i < n; i++) {
var filepath = noExtPath + extArr[i];
try {
fs.statSync(filepath);
return { path: filepath, extension: extArr[i] };
} catch (e) {}
}
return null;
}
function findUpFile(basedir, filepath, extArr) {
var lastdir;
do {
var found = findFile(basedir, filepath, extArr);
if (found) {
return found;
}
lastdir = basedir;
basedir = path.dirname(basedir);
} while (lastdir !== basedir);
return null;
}
function createExtensionArray(exts) {
if (isString(exts)) {
return [exts];
}
if (Array.isArray(exts)) {
exts = exts.filter(isString);
return (exts.length > 0) ? exts : [''];
}
if (isPlainObject(exts)) {
exts = Object.keys(exts);
return (exts.length > 0) ? exts : [''];
}
return [''];
}
function createExtensionMap(exts) {
if (!isPlainObject(exts)) {
return null;
}
if (isEmpty(exts)) {
return { '': null };
}
return exts;
}
module.exports = fined;
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