markmac/lib/index.js

> Markdown macros - embed program outputs in markdown

"use strict";
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    var desc = Object.getOwnPropertyDescriptor(m, k);
    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
      desc = { enumerable: true, get: function() { return m[k]; } };
    }
    Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
    if (k2 === undefined) k2 = k;
    o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
    Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
    o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
    if (mod && mod.__esModule) return mod;
    var result = {};
    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
    __setModuleDefault(result, mod);
    return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.markmac = void 0;
const child_process_1 = require("child_process");
const readline = __importStar(require("readline"));
/**
 * Reads markdown with `<!-- <macro exec="COMMAND"> -->` annotations from
 * `input`, expands it by executing `COMMAND` and writes to `output`.
 */
async function markmac(input = process.stdin, output = process.stdout) {
    const BEGIN_RE = /^<!-- <macro exec="(.*)"> -->$/;
    const END_RE = /^<!-- <\/macro> -->$/;
    let currentMacro;
    const ifc = readline.createInterface(input);
    ifc.on('line', line => {
        const begin = BEGIN_RE.exec(line);
        const end = END_RE.exec(line);
        if (!currentMacro) {
            output.write(line);
            output.write('\n');
            if (begin) {
                currentMacro = begin[1];
                const stdout = (0, child_process_1.execSync)(currentMacro);
                output.write(stdout);
            }
        }
        else {
            if (end) {
                currentMacro = undefined;
                output.write(line);
                output.write('\n');
            }
        }
    });
    return new Promise(done => {
        ifc.on('close', done);
    });
}
exports.markmac = markmac;
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