function ReplaceStringTransform(str, value) {
if (!(this instanceof ReplaceStringTransform)) {
return new ReplaceStringTransform(options);
}
Transform.call(this);
this._str = str;
this._length = this._str.length;
this._value = value == null ? '' : value + '';
this._rest = '';
}
function FileWriterTransform(writer, source, isRaw, req) {
if (!(this instanceof FileWriterTransform)) {
return new FileWriterTransform(options);
}
var self = this;
Transform.call(self);
self._writer = writer;
source.on('error', function() {
writer.end();
});
isRaw && writer.write(getRawData(source, req));
}
function SpeedTransform(options) {
if (!(this instanceof SpeedTransform)) {
return new SpeedTransform(options);
}
Transform.call(this);
options = options || {};
var value = parseInt(options.speed * 1000 / 8);
if (value > 0) {
this._speed = value;
}
if ((value = parseInt(options.delay)) > 0) {
this._delay = value;
}
}
function WhistleTransform(options) {
if (!(this instanceof WhistleTransform)) {
return new WhistleTransform(options);
}
Transform.call(this);
options = options || {};
var value = parseInt(options.speed * 1000 / 8);
if (value > 0) {
this._speed = value;
}
if ((value = parseInt(options.delay)) > 0) {
this._delay = value;
}
var charset = options.charset && String(options.charset);
if (!iconv.encodingExists(charset)) {
charset = 'utf8';
}
this._body = getBuffer(options, 'body', charset);
this._top = getBuffer(options, 'top', charset);
this._bottom = getBuffer(options, 'bottom', charset);
}
function ReplacePatternTransform(pattern, value) {
Transform.call(this);
this._pattern = pattern;
this._value = value == null ? '' : value + '';
this._rest = '';
}