json-property-filter/lib/cli.js

JavaScript library and application to filter a JSON object by including and excluding properties.

"use strict";
var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
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        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;
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            if (y = 0, t) op = [op[0] & 2, t.value];
            switch (op[0]) {
                case 0: case 1: t = op; break;
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Object.defineProperty(exports, "__esModule", { value: true });
var fs = require("fs");
var commander = require("commander");
var _1 = require(".");
var debug_1 = require("debug");
var log = debug_1.default("json-property-filter:cli");
function readFile(file) {
    return new Promise(function (resolve, reject) {
        return fs.readFile(file, function (error, data) { return (error ? reject(error) : resolve(data)); });
    });
}
function writeFileAsync(file, data) {
    return new Promise(function (resolve, reject) { return fs.writeFile(file, data, function (error) { return (error ? reject(error) : resolve()); }); });
}
function handle(file, options) {
    return __awaiter(this, void 0, void 0, function () {
        var buffer, content, jsonContent, result, data;
        return __generator(this, function (_a) {
            switch (_a.label) {
                case 0:
                    log("Read file: %s", file);
                    return [4, readFile(file)];
                case 1:
                    buffer = _a.sent();
                    content = buffer.toString(options.encoding);
                    jsonContent = JSON.parse(content);
                    log("Apply filters: %o", options.filters);
                    result = _1.apply(jsonContent, options.filters);
                    data = options.pretty ? JSON.stringify(result, void 0, +options.prettySpace) : JSON.stringify(result);
                    if (!options.out) return [3, 3];
                    log("Write file: %s", file);
                    return [4, writeFileAsync(options.out, data)];
                case 2:
                    _a.sent();
                    return [3, 4];
                case 3:
                    process.stdout.write(data);
                    _a.label = 4;
                case 4: return [2];
            }
        });
    });
}
commander
    .version("2.0.0")
    .description("Filter a JSON object by including and excluding properties.")
    .requiredOption("--in <file>", "File to filter.")
    .requiredOption("-f, --filters <filters...>", "Add include and exclude filters.")
    .option("--out <file>", "Specifies the output file.")
    .option("-p, --pretty", "Display results in an easy-to-read format.", false)
    .option("--pretty-space <number>", "Specifies the space.", "4")
    .option("--encoding", "Specifies encodage.", "utf8")
    .option("--debug", "Enable debug mode.", false)
    .parse(process.argv);
if (commander.debug) {
    debug_1.default.enable("json-property-filter:*");
}
handle(commander.in, {
    encoding: commander.encoding,
    filters: commander.filters,
    out: commander.out,
    pretty: commander.pretty,
    prettySpace: commander.prettySpace,
});