diff options
Diffstat (limited to 'deps/npm/node_modules/fstream/lib/proxy-writer.js')
-rw-r--r-- | deps/npm/node_modules/fstream/lib/proxy-writer.js | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/deps/npm/node_modules/fstream/lib/proxy-writer.js b/deps/npm/node_modules/fstream/lib/proxy-writer.js new file mode 100644 index 0000000000..2c78fc6736 --- /dev/null +++ b/deps/npm/node_modules/fstream/lib/proxy-writer.js @@ -0,0 +1,109 @@ +// A writer for when we don't know what kind of thing +// the thing is. That is, it's not explicitly set, +// so we're going to make it whatever the thing already +// is, or "File" +// +// Until then, collect all events. + +module.exports = ProxyWriter + +var Writer = require("./writer.js") + , getType = require("./get-type.js") + , inherits = require("inherits") + , collect = require("./collect.js") + , fs = require("fs") + +inherits(ProxyWriter, Writer) + +function ProxyWriter (props) { + var me = this + if (!(me instanceof ProxyWriter)) throw new Error( + "ProxyWriter must be called as constructor.") + + me.props = props + me._needDrain = false + + Writer.call(me, props) +} + +ProxyWriter.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(Writer(props, current)) + }) +} + +ProxyWriter.prototype._addProxy = function (proxy) { + // console.error("~~ set proxy", this.path) + var me = this + if (me._proxy) { + return me.error("proxy already set") + } + + me._proxy = proxy + ; [ "ready" + , "error" + , "close" + , "pipe" + , "drain" + , "warn" + ].forEach(function (ev) { + proxy.on(ev, me.emit.bind(me, ev)) + }) + + me.emit("proxy", proxy) + + var calls = me._buffer + calls.forEach(function (c) { + // console.error("~~ ~~ proxy buffered call", c[0], c[1]) + proxy[c[0]].call(proxy, c[1]) + }) + me._buffer.length = 0 + if (me._needsDrain) me.emit("drain") +} + +ProxyWriter.prototype.add = function (entry) { + // console.error("~~ proxy add") + collect(entry) + + if (!this._proxy) { + this._buffer.push(["add", [entry]]) + this._needDrain = true + return false + } + return this._proxy.add(entry) +} + +ProxyWriter.prototype.write = function (c) { + // console.error("~~ proxy write") + if (!this._proxy) { + this._buffer.push(["write", [c]]) + this._needDrain = true + return false + } + return this._proxy.write(c) +} + +ProxyWriter.prototype.end = function (c) { + // console.error("~~ proxy end") + if (!this._proxy) { + this._buffer.push(["end", c]) + return false + } + return this._proxy.end(c) +} |