How to use the clang-format.spawnClangFormat function in clang-format
To help you get started, we’ve selected a few clang-format examples, based on popular ways it is used in public projects.
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appcelerator / titanium_mobile / Gruntfile.js View on Github 
async.mapLimit(src, EXEC_LIMIT, function (filepath, cb) {
let stdout = '';
const proc = clangFormat.spawnClangFormat([ '-style=file', '-output-replacements-xml', filepath ], function () {}, 'pipe');
proc.stdout.on('data', function (data) {
stdout += data.toString();
});
proc.on('close', function (exit) {
if (exit) {
grunt.log.warn('Exit code: ' + exit);
grunt.fail.fatal(stdout);
cb(exit);
}
const modified = stdout.replace(/\r?\n/g, '');
if (modified !== '') {
// Record failure, because formatting is bad.
// TODO Get the correctly formatted source? Give more details on the bad sections?
errors.push(new Error('Formatting incorrect on "' + filepath + '", proposed changes: ' + stdout));
}
