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run.js
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run.js
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#!/usr/bin/env node
var esprima = require('esprima-fb');
var FileFinder = require('node-find-files');
var fs = require('graceful-fs');
var jstransform = require('jstransform');
var path = require('path');
var visitReactTag = require('./transforms/react').visitReactTag;
var S = esprima.Syntax;
var USAGE =
'Read a file (or directory of files) from disk, transform it so that ' +
'React 0.9 will render it the same way as React 0.8 (whitespace-wise), and ' +
'write the result back to disk.';
function _visitFbt(node, path, state) {
return false;
}
_visitFbt.test = function(node, path, state) {
return node.type === S.XJSElement
&& node.openingElement.name.name === 'fbt';
};
var VISITORS_LIST = [
_visitFbt,
visitReactTag
];
function _transformSource(source) {
return jstransform.transform(VISITORS_LIST, source).code;
}
function transformDir(dirPath, exclude) {
var finder = new FileFinder({
rootFolder: dirPath,
filterFunction: function(path, stat) {
return /\.jsx?$/.test(path) && (!exclude || !exclude.test(path));
}
});
var numTransforms = 0;
var completeTransforms = 0;
var findingComplete = false;
function _printProgress() {
process.stdout.clearLine();
process.stdout.cursorTo(0);
process.stdout.write(
completeTransforms + '/' + numTransforms + ' transforms complete'
);
if (findingComplete && completeTransforms === numTransforms) {
console.log('\ndone!');
}
}
finder.on('match', function(pathStr, stat) {
fs.readFile(pathStr, 'utf8', function(err, data) {
if (err) {
err.message = err.message + ' (' + pathStr + ')';
throw err;
}
if (/@jsx React\.DOM/.test(data)) {
numTransforms++;
_printProgress();
var transformedData;
try {
transformedData = _transformSource(data);
} catch (e) {
e.message = e.message + ' (' + pathStr + ')';
throw e;
}
if (transformedData !== data) {
fs.writeFile(pathStr, transformedData, function(err) {
if (err) {
err.message = err.message + ' (' + pathStr + ')';
throw err;
}
completeTransforms++;
_printProgress();
});
} else {
completeTransforms++;
_printProgress();
}
}
});
});
finder.on('error', function(err) {
console.log('\nError: ', err.stack);
throw err;
});
finder.on('complete', function() {
findingComplete = true;
});
finder.startSearch();
}
function transformFile(pathStr) {
fs.readFile(pathStr, 'utf8', function(err, data) {
if (err) {
err.message = err.message + ' (' + pathStr + ')';
throw err;
}
if (/@jsx React\.DOM/.test(data)) {
var transformedData;
try {
transformedData = _transformSource(data);
} catch (e) {
e.message = e.message + ' (' + pathStr + ')';
throw e;
}
if (transformedData !== data) {
fs.writeFile(pathStr, transformedData, function(err) {
if (err) {
err.message = err.message + ' (' + pathStr + ')';
throw err;
}
console.log('done!');
});
} else {
console.log('done!');
}
} else {
console.error(pathStr + ' is not a JSX file!');
}
});
}
if (require.main === module) {
var argv = require('optimist')
.usage(USAGE)
.argv;
if (argv._.length === 0) {
throw new Error(
'Please specify a file or directory path as the first arg!'
);
}
argv._.forEach(function(arg) {
var absPath = path.resolve(arg);
fs.stat(absPath, function(err, stat) {
if (err) throw err;
if (stat.isFile()) {
transformFile(absPath);
} else if (stat.isDirectory()) {
var exclude = null;
if (argv.exclude) {
exclude = new RegExp(argv.exclude);
}
transformDir(absPath, exclude);
} else {
throw new Error('Unknown filesystem node type: ' + absPath);
}
});
});
}
exports.transformDir = transformDir;