94 lines
1.9 KiB
JavaScript
94 lines
1.9 KiB
JavaScript
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// A reader for when we don't yet know what kind of thing
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// the thing is.
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module.exports = ProxyReader
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var Reader = require("./reader.js")
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, getType = require("./get-type.js")
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, inherits = require("inherits")
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, fs = require("graceful-fs")
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inherits(ProxyReader, Reader)
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function ProxyReader (props) {
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var me = this
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if (!(me instanceof ProxyReader)) throw new Error(
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"ProxyReader must be called as constructor.")
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me.props = props
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me._buffer = []
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me.ready = false
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Reader.call(me, props)
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}
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ProxyReader.prototype._stat = function () {
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var me = this
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, props = me.props
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// stat the thing to see what the proxy should be.
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, stat = props.follow ? "stat" : "lstat"
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fs[stat](props.path, function (er, current) {
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var type
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if (er || !current) {
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type = "File"
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} else {
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type = getType(current)
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}
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props[type] = true
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props.type = me.type = type
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me._old = current
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me._addProxy(Reader(props, current))
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})
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}
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ProxyReader.prototype._addProxy = function (proxy) {
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var me = this
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if (me._proxyTarget) {
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return me.error("proxy already set")
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}
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me._proxyTarget = proxy
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proxy._proxy = me
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; [ "error"
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, "data"
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, "end"
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, "close"
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, "linkpath"
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, "entry"
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, "entryEnd"
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, "child"
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, "childEnd"
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, "warn"
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, "stat"
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].forEach(function (ev) {
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// console.error("~~ proxy event", ev, me.path)
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proxy.on(ev, me.emit.bind(me, ev))
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})
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me.emit("proxy", proxy)
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proxy.on("ready", function () {
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// console.error("~~ proxy is ready!", me.path)
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me.ready = true
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me.emit("ready")
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})
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var calls = me._buffer
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me._buffer.length = 0
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calls.forEach(function (c) {
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proxy[c[0]].apply(proxy, c[1])
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})
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}
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ProxyReader.prototype.pause = function () {
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return this._proxyTarget ? this._proxyTarget.pause() : false
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}
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ProxyReader.prototype.resume = function () {
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return this._proxyTarget ? this._proxyTarget.resume() : false
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}
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