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CondStream to es6 class

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This commit is contained in:
斟酌 鵬兄 2016-02-19 23:44:03 +08:00
parent f3ba7a4a2d
commit 041b3fa508
1 changed files with 114 additions and 108 deletions
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62
utils/CondStream.js
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@ -1,12 +1,20 @@
"use strict";
var Dragonfly = global.Dragonfly;
var fs = require( "fs" );
var path = require( "path" );
var crypto = require( "crypto" );
var util = require( "util" );
var ReadStream = require( "stream" ).Readable;
var ConditionalStream = function( tmpPath, triggerLimit )
class ConditionalStream extends String
{
constructor( tmpPath, triggerLimit )
{
super();
// XXX: Dirty fix for incompat on node js v5
Object.setPrototypeOf( this, new.target.prototype );
if( !tmpPath )
{
throw new Error( "Temp path is not defined" );
@ -24,13 +32,10 @@ var ConditionalStream = function( tmpPath, triggerLimit )
this.__ended = false;
this.__finished = false;
};
}
util.inherits( ConditionalStream, String );
ConditionalStream.prototype.write = function( data )
{
write( data )
{
var _self = this;
this.size += data.length;
@ -48,14 +53,14 @@ ConditionalStream.prototype.write = function( data )
{
this.file = path.join( this.tmpPath, "ss_" + crypto.randomBytes( 8 ).toString( "hex" ) );
this.stream = fs.createWriteStream( this.file, { mode: 0600 } );
this.stream = fs.createWriteStream( this.file, { mode: "0600" } );
this.stream.addListener( "finish", this.__end.bind( this ) );
this.stream.write( this.hexData, "hex" );
}
};
}
ConditionalStream.prototype.end = function( handler )
{
end( handler )
{
var _self = this;
if( this.stream )
{
@ -73,10 +78,10 @@ ConditionalStream.prototype.end = function( handler )
handler( _self )
} , 0 );
}
};
}
ConditionalStream.prototype.discard = function()
{
discard()
{
var _self = this;
this.__discard = true;
@ -88,16 +93,10 @@ ConditionalStream.prototype.discard = function()
if( _self.__error ) throw new Error( _self.__error );
} );
}
};
}
ConditionalStream.prototype.__end = function()
{
this.__finished = true;
if( this.__discard ) this.discard();
};
ConditionalStream.prototype.toString = function( enc )
{
toString( enc )
{
if( this.stream )
{
this.discard();
@ -105,10 +104,10 @@ ConditionalStream.prototype.toString = function( enc )
}
return new Buffer( this.hexData, "hex" ).toString( enc );
};
}
ConditionalStream.prototype.resultStream = function()
{
resultStream()
{
var _self = this;
if( !this.__finished ) throw new Error( "Data is not finished yet" );
if( this.__discard ) throw new Error( "Data is discarded" );
@ -129,6 +128,13 @@ ConditionalStream.prototype.resultStream = function()
}, 0 );
return st;
};
}
__end()
{
this.__finished = true;
if( this.__discard ) this.discard();
}
}
module.exports = ConditionalStream;