@atomist/automation-client/project/util/jsonUtils.js

Atomist API for software low-level client

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const logger_1 = require("../../internal/util/logger");
const projectUtils_1 = require("./projectUtils");
/**
 * Manipulate the contents of the given JSON file within the project,
 * using its object form and writing back using the same formatting.
 * See the manipulate function.
 * @param {P} p
 * @param {string} jsonPath JSON file path. This function will do nothing
 * without error if the file is ill-formed or not found.
 * @param {JsonManipulation} manipulation
 * @return {Promise<P extends ProjectAsync>}
 */
function doWithJson(p, jsonPath, manipulation) {
    return projectUtils_1.doWithFiles(p, jsonPath, file => {
        return file.getContent()
            .then(content => {
            const newContent = manipulate(content, manipulation, jsonPath);
            return file.setContent(newContent)
                .then(() => p);
        });
    });
}
exports.doWithJson = doWithJson;
const spacePossibilities = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, " ", "  ", "\t"];
/**
 * Update the object form of the given JSON content and write
 * it back with minimal changes
 * @param {string} jsonIn
 * @param {(jsonObj: any) => Object} manipulation
 * @return {string}
 */
function manipulate(jsonIn, manipulation, context = "") {
    if (!jsonIn) {
        return jsonIn;
    }
    try {
        const newline = jsonIn.endsWith("\n"); // does this work on Windows?
        const jsonToCompare = newline ? jsonIn.replace(/\n$/, "") : jsonIn;
        const obj = JSON.parse(jsonIn);
        let space = 2;
        for (const sp of spacePossibilities) {
            const maybe = JSON.stringify(obj, null, sp);
            if (jsonToCompare === maybe) {
                logger_1.logger.debug(`Definitely inferred space as [${sp}]`);
                space = sp;
                break;
            }
        }
        logger_1.logger.debug(`Inferred space is [${space}]`);
        manipulation(obj);
        return JSON.stringify(obj, null, space) + (newline ? "\n" : "");
    }
    catch (e) {
        logger_1.logger.warn("Syntax error parsing supposed JSON (%s). Context:[%s]. Alleged JSON:\n%s", e, context, jsonIn);
        return jsonIn;
    }
}
exports.manipulate = manipulate;
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