first commit

node_modules/adbkit-logcat/lib/logcat/parser/binary.js

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+(function() {
+  var Binary, Entry, Parser, Priority,
+    extend = function(child, parent) { for (var key in parent) { if (hasProp.call(parent, key)) child[key] = parent[key]; } function ctor() { this.constructor = child; } ctor.prototype = parent.prototype; child.prototype = new ctor(); child.__super__ = parent.prototype; return child; },
+    hasProp = {}.hasOwnProperty;
+
+  Parser = require('../parser');
+
+  Entry = require('../entry');
+
+  Priority = require('../priority');
+
+  Binary = (function(superClass) {
+    var HEADER_SIZE_MAX, HEADER_SIZE_V1;
+
+    extend(Binary, superClass);
+
+    HEADER_SIZE_V1 = 20;
+
+    HEADER_SIZE_MAX = 100;
+
+    function Binary() {
+      this.buffer = new Buffer('');
+    }
+
+    Binary.prototype.parse = function(chunk) {
+      var cursor, data, entry, headerSize, length, nsec, sec;
+      this.buffer = Buffer.concat([this.buffer, chunk]);
+      while (this.buffer.length > 4) {
+        cursor = 0;
+        length = this.buffer.readUInt16LE(cursor);
+        cursor += 2;
+        headerSize = this.buffer.readUInt16LE(cursor);
+        if (headerSize < HEADER_SIZE_V1 || headerSize > HEADER_SIZE_MAX) {
+          headerSize = HEADER_SIZE_V1;
+        }
+        cursor += 2;
+        if (this.buffer.length < headerSize + length) {
+          break;
+        }
+        entry = new Entry;
+        entry.setPid(this.buffer.readInt32LE(cursor));
+        cursor += 4;
+        entry.setTid(this.buffer.readInt32LE(cursor));
+        cursor += 4;
+        sec = this.buffer.readInt32LE(cursor);
+        cursor += 4;
+        nsec = this.buffer.readInt32LE(cursor);
+        entry.setDate(new Date(sec * 1000 + nsec / 1000000));
+        cursor += 4;
+        cursor = headerSize;
+        data = this.buffer.slice(cursor, cursor + length);
+        cursor += length;
+        this.buffer = this.buffer.slice(cursor);
+        this._processEntry(entry, data);
+      }
+      if (this.buffer.length) {
+        this.emit('wait');
+      } else {
+        this.emit('drain');
+      }
+    };
+
+    Binary.prototype._processEntry = function(entry, data) {
+      var cursor, length;
+      entry.setPriority(data[0]);
+      cursor = 1;
+      length = data.length;
+      while (cursor < length) {
+        if (data[cursor] === 0) {
+          entry.setTag(data.slice(1, cursor).toString());
+          entry.setMessage(data.slice(cursor + 1, length - 1).toString());
+          this.emit('entry', entry);
+          return;
+        }
+        cursor += 1;
+      }
+      this.emit('error', new Error("Unprocessable entry data '" + data + "'"));
+    };
+
+    return Binary;
+
+  })(Parser);
+
+  module.exports = Binary;
+
+}).call(this);