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Add isEmpty method to Stream, DecodeStream and ChunkedStream

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This commit is contained in:
Jonas Jenwald 2014-05-18 00:31:47 +02:00
parent c0419d7dea
commit ea0453f106
2 changed files with 14 additions and 1 deletions
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4
src/core/chunked_stream.js
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@ -133,6 +133,10 @@ var ChunkedStream = (function ChunkedStreamClosure() {
return this.end - this.start; return this.end - this.start;
}, },
get isEmpty() {
return this.length === 0;
},
getByte: function ChunkedStream_getByte() { getByte: function ChunkedStream_getByte() {
var pos = this.pos; var pos = this.pos;
if (pos >= this.end) { if (pos >= this.end) {

11
src/core/stream.js
View file

@ -35,6 +35,9 @@ var Stream = (function StreamClosure() {
get length() { get length() {
return this.end - this.start; return this.end - this.start;
}, },
get isEmpty() {
return this.length === 0;
},
getByte: function Stream_getByte() { getByte: function Stream_getByte() {
if (this.pos >= this.end) { if (this.pos >= this.end) {
return -1; return -1;
@ -128,6 +131,12 @@ var DecodeStream = (function DecodeStreamClosure() {
} }
DecodeStream.prototype = { DecodeStream.prototype = {
get isEmpty() {
while (!this.eof && this.bufferLength === 0) {
this.readBlock();
}
return this.bufferLength === 0;
},
ensureBuffer: function DecodeStream_ensureBuffer(requested) { ensureBuffer: function DecodeStream_ensureBuffer(requested) {
var buffer = this.buffer; var buffer = this.buffer;
var current; var current;
@ -213,7 +222,7 @@ var DecodeStream = (function DecodeStreamClosure() {
} }
return new Stream(this.buffer, start, length, dict); return new Stream(this.buffer, start, length, dict);
}, },
skip: function Stream_skip(n) { skip: function DecodeStream_skip(n) {
if (!n) { if (!n) {
n = 1; n = 1;
} }