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Several CLI improvements #15

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Several CLI improvements #15

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27 changes: 21 additions & 6 deletions index.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -5,19 +5,24 @@ import * as path from 'path';

import {StreamWriter, NopWriter, Emitter} from './lib/index';

const argv = yargs.usage('Usage: $0 [options] inputFile rootName')
const argv = yargs.usage('Usage: $0 [options] inputFile [...] rootName')
.alias('i', 'interface-file')
.string('i')
.describe('i', 'Specify output file for interfaces')
.describe('i', 'Output file for interfaces')
.alias('p', 'proxy-file')
.string('p')
.describe('p', 'Specity output file for TypeScript proxy classes')
.describe('p', 'Output file for TypeScript proxy classes')
.help('h')
.alias('h', 'help')
.argv;

let interfaceWriter = new NopWriter();
let proxyWriter = interfaceWriter;
if (!argv.i && !argv.p) {
console.error('Please specify at least one of -i or -p to indicate desired output.');
yargs.showHelp();
process.exit(1);
}
if (argv.i && argv.p && path.resolve(argv.i) === path.resolve(argv.p)) {
console.error(`Interfaces and proxies cannot be written to same file.`);
yargs.showHelp();
Expand All @@ -29,12 +34,22 @@ if (argv.i) {
if (argv.p) {
proxyWriter = new StreamWriter(fs.createWriteStream(argv.p));
}
if (argv._.length !== 2) {
if (argv._.length < 2) {
console.error(`Please supply an input file with samples in a JSON array, and a symbol to use for the root interface / proxy.`);
yargs.showHelp();
process.exit(1);
}

const samples = JSON.parse(fs.readFileSync(argv._[0]).toString());
const samples: any[] = [];
for (const i of argv._.slice(0, -1)) {
const thisSample = JSON.parse(fs.readFileSync(i).toString());
if (Array.isArray(thisSample)) {
for (let j = 0; j < thisSample.length; j++) {
samples.push(thisSample[j]);
}
} else {
samples.push(thisSample);
}
}
const e = new Emitter(interfaceWriter, proxyWriter);
e.emit(samples, argv._[1]);
e.emit(samples, argv._[argv.length - 1]);