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JS: Split node utils into their own file.

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This commit is contained in:
Arthur Britto
2012-10-11 16:19:24 -07:00
committed by Stefan Thomas
parent 9e60500e0d
commit dffa27a6e7
2 changed files with 88 additions and 87 deletions
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87
js/utils.js
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@@ -1,8 +1,3 @@
// YYY Should probably have two versions: node vs browser
var fs = require("fs");
var path = require("path");
Function.prototype.method = function(name,func) {
this.prototype[name] = func;
@@ -42,84 +37,6 @@ var mapOr = function(func, array, done) {
}
};
// Make a directory and sub-directories.
var mkPath = function(dirPath, mode, done) {
fs.mkdir(dirPath, typeof mode === "string" ? parseInt(mode, 8) : mode, function(e) {
if (!e || e.code === "EEXIST") {
// Created or already exists, done.
done();
}
else if (e.code === "ENOENT") {
// Missing sub dir.
mkPath(path.dirname(dirPath), mode, function(e) {
if (e) {
throw e;
}
else {
mkPath(dirPath, mode, done);
}
});
}
else {
throw e;
}
});
};
// Empty a directory.
var emptyPath = function(dirPath, done) {
fs.readdir(dirPath, function(err, files) {
if (err) {
done(err);
}
else {
mapOr(rmPath, files.map(function(f) { return path.join(dirPath, f); }), done);
}
});
};
// Remove path recursively.
var rmPath = function(dirPath, done) {
// console.log("rmPath: %s", dirPath);
fs.lstat(dirPath, function(err, stats) {
if (err && err.code == "ENOENT") {
done();
}
if (err) {
done(err);
}
else if (stats.isDirectory()) {
emptyPath(dirPath, function(e) {
if (e) {
done(e);
}
else {
// console.log("rmdir: %s", dirPath); done();
fs.rmdir(dirPath, done);
}
});
}
else {
// console.log("unlink: %s", dirPath); done();
fs.unlink(dirPath, done);
}
});
};
// Create directory if needed and empty if needed.
var resetPath = function(dirPath, mode, done) {
mkPath(dirPath, mode, function(e) {
if (e) {
done(e);
}
else {
emptyPath(dirPath, done);
}
});
};
var trace = function(comment, func) {
return function() {
console.log("%s: %s", trace, arguments.toString);
@@ -151,11 +68,7 @@ var stringToHex = function (s) {
}).join("");
};
exports.emptyPath = emptyPath;
exports.mapOr = mapOr;
exports.mkPath = mkPath;
exports.resetPath = resetPath;
exports.rmPath = rmPath;
exports.trace = trace;
exports.hexToString = hexToString;
exports.stringToHex = stringToHex;