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// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var assert = require('assert');
var inherits = require('util').inherits;
var net = require('net');
var TTY = process.binding('tty_wrap').TTY;
var isTTY = process.binding('tty_wrap').isTTY;
var util = require('util');
exports.isatty = function(fd) {
return isTTY(fd);
};
// backwards-compat
exports.setRawMode = util.deprecate(function(flag) {
if (!process.stdin.isTTY) {
throw new Error('can\'t set raw mode on non-tty');
}
process.stdin.setRawMode(flag);
}, 'tty.setRawMode: Use `process.stdin.setRawMode()` instead.');
function ReadStream(fd, options) {
if (!(this instanceof ReadStream))
return new ReadStream(fd, options);
options = util._extend({
highWaterMark: 0,
readable: true,
writable: false,
handle: new TTY(fd, true)
}, options);
net.Socket.call(this, options);
this.isRaw = false;
this.isTTY = true;
}
inherits(ReadStream, net.Socket);
exports.ReadStream = ReadStream;
ReadStream.prototype.setRawMode = function(flag) {
flag = !!flag;
this._handle.setRawMode(flag);
this.isRaw = flag;
};
function WriteStream(fd) {
if (!(this instanceof WriteStream)) return new WriteStream(fd);
net.Socket.call(this, {
handle: new TTY(fd, false),
readable: false,
writable: true
});
var winSize = this._handle.getWindowSize();
if (winSize) {
this.columns = winSize[0];
this.rows = winSize[1];
}
}
inherits(WriteStream, net.Socket);
exports.WriteStream = WriteStream;
WriteStream.prototype.isTTY = true;
WriteStream.prototype._refreshSize = function() {
var oldCols = this.columns;
var oldRows = this.rows;
var winSize = this._handle.getWindowSize();
if (!winSize) {
this.emit('error', errnoException(process._errno, 'getWindowSize'));
return;
}
var newCols = winSize[0];
var newRows = winSize[1];
if (oldCols !== newCols || oldRows !== newRows) {
this.columns = newCols;
this.rows = newRows;
this.emit('resize');
}
};
// backwards-compat
WriteStream.prototype.cursorTo = function(x, y) {
require('readline').cursorTo(this, x, y);
};
WriteStream.prototype.moveCursor = function(dx, dy) {
require('readline').moveCursor(this, dx, dy);
};
WriteStream.prototype.clearLine = function(dir) {
require('readline').clearLine(this, dir);
};
WriteStream.prototype.clearScreenDown = function() {
require('readline').clearScreenDown(this);
};
WriteStream.prototype.getWindowSize = function() {
return [this.columns, this.rows];
};
// TODO share with net_uv and others
function errnoException(errorno, syscall) {
var e = new Error(syscall + ' ' + errorno);
e.errno = e.code = errorno;
e.syscall = syscall;
return e;
}