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diffs.js
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diffs.js
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'use strict';
var fs = require('fs');
var path = require('path');
var diff = require('./diff');
var utils = require('./utils');
module.exports = function(file, next) {
var fp = path.resolve(file.dest, file.relative);
if (isBinary(fp, file.contents)) {
console.error(binaryDiff(fp, file.contents));
} else {
var str = fs.readFileSync(fp, 'utf8');
console.error(diff(str, file.contents.toString()));
}
next();
};
function isBinary(existingPath, fileContents) {
var header = utils.readChunk.sync(existingPath, 0, 512);
return utils.itob.isBinarySync(undefined, header)
|| utils.itob.isBinarySync(undefined, fileContents);
}
function binaryDiff(existingPath, fileContents) {
var existingStat = fs.statSync(existingPath);
var sizeDiff;
var table = new utils.Table({
head: ['', 'Existing', 'Replacement', 'Diff']
});
if (existingStat.size > fileContents.length) {
sizeDiff = '-';
} else {
sizeDiff = '+';
}
sizeDiff += utils.bytes(Math.abs(existingStat.size - fileContents.length));
table.push([
'Size',
utils.bytes(existingStat.size),
utils.bytes(fileContents.length),
sizeDiff
], [
'Last modified',
utils.dateFormat(existingStat.mtime),
'',
''
]);
return table.toString();
};