diff --git a/lib/utils.js b/lib/utils.js new file mode 100644 index 00000000000..1c44567400a --- /dev/null +++ b/lib/utils.js @@ -0,0 +1,69 @@ +exports.print = function (x) { + node.stdio.write(x); +}; + +exports.puts = function (x) { + node.stdio.write(x.toString() + "\n"); +}; + +exports.debug = function (x) { + node.stdio.writeError("DEBUG: " + x.toString() + "\n"); +}; + +exports.error = function (x) { + node.stdio.writeError(x.toString() + "\n"); +}; + +/** + * Echos the value of a value. Trys to print the value out + * in the best way possible given the different types. + * + * @param {Object} value The object to print out + */ +exports.inspect = function (value) { + if (value === 0) return "0"; + if (value === false) return "false"; + if (value === "") return '""'; + if (typeof(value) == "function") return "[Function]"; + if (value === undefined) return; + + try { + return JSON.stringify(value); + } catch (e) { + // TODO make this recusrive and do a partial JSON output of object. + if (e.message.search("circular")) { + return "[Circular Object]"; + } else { + throw e; + } + } +}; + +exports.p = function (x) { + exports.error(exports.inspect(x)); +}; + +exports.exec = function (command) { + var child = node.createChildProcess(command); + var stdout = ""; + var stderr = ""; + var promise = new node.Promise(); + + child.addListener("output", function (chunk) { + if (chunk) stdout += chunk; + }); + + child.addListener("error", function (chunk) { + if (chunk) stderr += chunk; + }); + + child.addListener("exit", function (code) { + if (code == 0) { + promise.emitSuccess(stdout, stderr); + } else { + promise.emitError(code, stdout, stderr); + } + }); + + return promise; +};