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#!/usr/bin/env node

const spawnSync = require('child_process').spawnSync;

const path = require('path');

const filesToCheck = ['*.h', '*.cc'];

const FORMAT_START = process.env.FORMAT_START || 'main';

const pythonVersionCheck = [

'-c',

'import sys; raise SystemExit(sys.version_info[0] != 3)'

];

function findPython () {

const candidates = [];

if (process.env.PYTHON) {

candidates.push({

command: process.env.PYTHON,

args: [],

name: process.env.PYTHON

});

}

if (process.platform === 'win32') {

candidates.push({ command: 'py', args: ['-3'], name: 'py -3' });

}

candidates.push(

{ command: 'python3', args: [], name: 'python3' },

{ command: 'python', args: [], name: 'python' }

);

for (const candidate of candidates) {

const result = spawnSync(

candidate.command,

[...candidate.args, ...pythonVersionCheck],

{ stdio: 'ignore' }

);

if (!result.error && result.status === 0) {

return candidate;

}

}

throw new Error([

'Could not find a usable Python 3 executable.',

`Tried: ${candidates.map(({ name }) => name).join(', ')}.`,

'Set the PYTHON environment variable to the path of a Python 3 executable.'

].join('\n'));

}

function main (args) {

let fix = false;

while (args.length > 0) {

switch (args[0]) {

case '-f':

case '--fix':

fix = true;

break;

default:

}

args.shift();

}

const clangFormatPath = path.dirname(require.resolve('clang-format'));

const binary = process.platform === 'win32'

? 'node_modules\\.bin\\clang-format.cmd'

: 'node_modules/.bin/clang-format';

const options = ['--binary=' + binary, '--style=file'];

if (fix) {

options.push(FORMAT_START);

} else {

options.push('--diff', FORMAT_START);

}

const gitClangFormatPath = path.join(clangFormatPath, 'bin/git-clang-format');

let python;

try {

python = findPython();

} catch (error) {

console.error(error.message);

return 2;

}

const result = spawnSync(

python.command,

[

...python.args,

gitClangFormatPath,

...options,

'--',

...filesToCheck

],

{ encoding: 'utf-8' }

);

if (result.error) {

console.error('Error running git-clang-format:', result.error.message);

return 2;

}

if (result.status !== 0 && result.status !== 1) {

const message = (

result.stderr ||

result.stdout ||

result.signal ||

`exit code ${result.status}`

).trim();

console.error(`Error running git-clang-format: ${message}`);

return 2;

}

if (result.stderr) {

process.stderr.write(result.stderr);

}

const clangFormatOutput = result.stdout.trim();

// Bail fast if in fix mode.

if (fix) {

console.log(clangFormatOutput);

return 0;

}

// Detect if there is any complains from clang-format

if (

clangFormatOutput !== '' &&

clangFormatOutput !== 'no modified files to format' &&

clangFormatOutput !== 'clang-format did not modify any files'

) {

console.error(clangFormatOutput);

const fixCmd = 'npm run lint:fix';

console.error(`

ERROR: please run "${fixCmd}" to format changes in your commit

Note that when running the command locally, please keep your local

main branch and working branch up to date with nodejs/node-addon-api

to exclude un-related complains.

Or you can run "env FORMAT_START=upstream/main ${fixCmd}".`);

return 1;

}

}

if (require.main === module) {

process.exitCode = main(process.argv.slice(2));

}