switch to vuepress

1 files changed, 53 insertions, 0 deletions

diff --git a/node_modules/stream-slice/index.js b/node_modules/stream-slice/index.js
new file mode 100644
index 00000000..44c4ae02
--- /dev/null
+++ b/node_modules/stream-slice/index.js
@@ -0,0 +1,53 @@
+
+var util = require('util');
+var Transform = require('stream').Transform;
+
+util.inherits(SliceStream, Transform);
+function SliceStream(start, end) {
+
+  if (!(this instanceof SliceStream)) {
+    return new SliceStream();
+  }
+
+  Transform.call(this);
+  this._start = start || 0;
+  this._end = end || Infinity;
+  this._offset = 0;
+  this._state = 0;
+
+  this._emitUp = false;
+  this._emitDown = false;
+}
+
+SliceStream.prototype._transform = function(chunk, encoding, done) {
+  this._offset += chunk.length;
+  if (!this._emitUp && this._offset >= this._start) {
+    this._emitUp = true;
+    var start = chunk.length - (this._offset - this._start);
+    if(this._offset > this._end)
+    {
+        var end = chunk.length - (this._offset - this._end);
+        this._emitDown = true;
+        this.push(chunk.slice(start, end));
+    }
+    else
+    {
+        this.push(chunk.slice(start, chunk.length));
+    }
+    return done();
+  }
+  if (this._emitUp && !this._emitDown) {
+    if (this._offset >= this._end) {
+      this._emitDown = true;
+      this.push(chunk.slice(0, chunk.length - (this._offset - this._end)));
+    } else {
+      this.push(chunk);
+    }
+    return done();
+  }
+  return done();
+}
+
+exports.slice = function(start, end) {
+  return new SliceStream(start, end);
+}