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var through = require('through2');
var Stream = require('stream');
// Consts
const PLUGIN_NAME = 'gulp-stream';
function gulpStream() {
var stream = through.obj(function(file, enc, callback) {
// keep null files as-is
if (file.isNull()) {
this.push(file);
return callback();
}
// keep stream files as-is
if (file.isStream()) {
this.push(file);
return callback();
}
// transform buffer files into buffers
if (file.isBuffer()) {
var cstream = Readable(file.contents);
cstream.on('error', this.emit.bind(this, 'error'));
file.contents = cstream;
this.push(file);
return callback();
}
});
return stream;
};
function Readable(buffer){
var readable = new Stream.Readable();
var idx = 0;
readable._read = function(size) {
var chunk = buffer.slice(0, size);
buffer = buffer.slice(size);
var finished = (chunk.length == 0 && buffer.length == 0);
this.push(finished ? null : chunk);
};
return readable;
}
module.exports = gulpStream;
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