mirror of https://github.com/lukechilds/node.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
89 lines
1.9 KiB
89 lines
1.9 KiB
// A reader for when we don't yet know what kind of thing
|
|
// the thing is.
|
|
|
|
module.exports = ProxyReader
|
|
|
|
var Reader = require("./reader.js")
|
|
, getType = require("./get-type.js")
|
|
, inherits = require("inherits")
|
|
, fs = require("graceful-fs")
|
|
|
|
inherits(ProxyReader, Reader)
|
|
|
|
function ProxyReader (props) {
|
|
var me = this
|
|
if (!(me instanceof ProxyReader)) throw new Error(
|
|
"ProxyReader must be called as constructor.")
|
|
|
|
me.props = props
|
|
me._buffer = []
|
|
me.ready = false
|
|
|
|
Reader.call(me, props)
|
|
}
|
|
|
|
ProxyReader.prototype._stat = function () {
|
|
var me = this
|
|
, props = me.props
|
|
// stat the thing to see what the proxy should be.
|
|
, stat = props.follow ? "stat" : "lstat"
|
|
|
|
fs[stat](props.path, function (er, current) {
|
|
var type
|
|
if (er || !current) {
|
|
type = "File"
|
|
} else {
|
|
type = getType(current)
|
|
}
|
|
|
|
props[type] = true
|
|
props.type = me.type = type
|
|
|
|
me._old = current
|
|
me._addProxy(Reader(props, current))
|
|
})
|
|
}
|
|
|
|
ProxyReader.prototype._addProxy = function (proxy) {
|
|
var me = this
|
|
if (me._proxyTarget) {
|
|
return me.error("proxy already set")
|
|
}
|
|
|
|
me._proxyTarget = proxy
|
|
proxy._proxy = me
|
|
|
|
; [ "error"
|
|
, "data"
|
|
, "end"
|
|
, "close"
|
|
, "linkpath"
|
|
, "entry"
|
|
, "warn"
|
|
].forEach(function (ev) {
|
|
// console.error("~~ proxy event", ev, me.path)
|
|
proxy.on(ev, me.emit.bind(me, ev))
|
|
})
|
|
|
|
me.emit("proxy", proxy)
|
|
|
|
proxy.on("ready", function () {
|
|
// console.error("~~ proxy is ready!", me.path)
|
|
me.ready = true
|
|
me.emit("ready")
|
|
})
|
|
|
|
var calls = me._buffer
|
|
me._buffer.length = 0
|
|
calls.forEach(function (c) {
|
|
proxy[c[0]].apply(proxy, c[1])
|
|
})
|
|
}
|
|
|
|
ProxyReader.prototype.pause = function () {
|
|
return this._proxyTarget ? this._proxyTarget.pause() : false
|
|
}
|
|
|
|
ProxyReader.prototype.resume = function () {
|
|
return this._proxyTarget ? this._proxyTarget.resume() : false
|
|
}
|
|
|