datakit
Version:
Simple JavaScript toolkit for data transform across JSON, CSV and YAML.
107 lines • 5.45 kB
JavaScript
;
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
return new (P || (P = Promise))(function (resolve, reject) {
function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
step((generator = generator.apply(thisArg, _arguments || [])).next());
});
};
var __generator = (this && this.__generator) || function (thisArg, body) {
var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
function verb(n) { return function (v) { return step([n, v]); }; }
function step(op) {
if (f) throw new TypeError("Generator is already executing.");
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case 0: case 1: t = op; break;
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}
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.documentation = exports.main = void 0;
var io_1 = require("../lib/io");
var verify_1 = require("../lib/verify");
var help_1 = require("./lib/help");
function main(argv, flags) {
return __awaiter(this, void 0, void 0, function () {
var outputFileNamePrefix, outputFileNameSuffix, data, i, record;
return __generator(this, function (_a) {
switch (_a.label) {
case 0:
if (argv.length < 1) {
throw new Error("Expected <number> argument for output file name prefix.");
}
outputFileNamePrefix = argv.shift();
outputFileNameSuffix = "json";
if (argv.length > 0) {
outputFileNameSuffix = argv.shift();
}
return [4 /*yield*/, (0, io_1.inputData)(argv)];
case 1:
data = _a.sent();
(0, verify_1.verifyInputArray)(data, "split-to-files");
i = 0;
_a.label = 2;
case 2:
if (!(i < data.length)) return [3 /*break*/, 5];
record = data[i];
return [4 /*yield*/, (0, io_1.outputDataToFile)(record, "".concat(outputFileNamePrefix, "-").concat(i + 1, ".").concat(outputFileNameSuffix))];
case 3:
_a.sent();
_a.label = 4;
case 4:
i++;
return [3 /*break*/, 2];
case 5: return [2 /*return*/];
}
});
});
}
exports.main = main;
exports.documentation = {
name: "split-to-files",
desc: "Writes a separate file for each record in the dataset. This command does not write to standard output.",
syntax: "split-to-files [<output-file-prefix>] [<output-file-suffix>] [<input-file>]",
inputs: help_1.standardCmdInputs,
outputs: [
"JSON files",
"CSV files",
"YAML files",
],
args: [
{
name: "output-file-prefix",
desc: "Specifies the prefix for output files. Each file created is numbered sequentially, starting with 1.",
},
{
name: "output-file-suffix",
desc: "Specifies the suffix for output files. Either 'csv', 'json', 'yaml' or 'yml'. Defaults to 'json'.",
},
help_1.standardInputFileHelp,
],
examples: [
{
name: "Reads JSON data from standard input and writes each records to a set of JSON files my-output-1.json, my-output-2.json and so on. Replace 'json' with 'csv' or 'yaml' to write CSV or YAML files instead.",
cmd: 'command-that-produces-json | split-to-files my-output- json',
},
],
};
//# sourceMappingURL=split-to-files.js.map