first commit

2023-05-19 00:42:48 +08:00
commit 53de9c6c51
243 changed files with 39485 additions and 0 deletions
--- a/client/bin_decoder.js
+++ b/client/bin_decoder.js
@@ -0,0 +1,104 @@
+'use strict';
+
+function ArrayBufferSer(arrayBuffer) {
+  this.buffer = arrayBuffer;
+  this.offset = 0;
+  this.sections = this.readArray();
+  this.headers = this.sections[0];
+  this._headersIndex = {};
+  for(var i = 0; i < this.headers.length; ++i) {
+    this._headersIndex[this.headers[i]] = i;
+  }
+  if(this.sections.length > 1) {
+    this.length = this.sections[1].length;
+  }
+}
+
+ArrayBufferSer.INT8 = 1;
+ArrayBufferSer.UINT8 = 2;
+ArrayBufferSer.UINT8_CLAMP = 3;
+ArrayBufferSer.INT16 = 4;
+ArrayBufferSer.UINT16 = 5;
+ArrayBufferSer.INT32 = 6;
+ArrayBufferSer.UINT32 = 7;
+ArrayBufferSer.FLOAT32 = 8;
+//ArrayBufferSer.FLOAT64 = 9; not supported
+ArrayBufferSer.STRING = 10;
+ArrayBufferSer.BUFFER = 11;
+
+
+ArrayBufferSer.prototype = {
+
+   sizes: [NaN, 1, 1, 1, 2, 2, 4, 4, 4, 8],
+
+   types: [
+    null,
+    Int8Array,
+    Uint8Array,
+    Uint8ClampedArray,
+    Int16Array,
+    Uint16Array,
+    Int32Array,
+    Uint32Array,
+    Float32Array,
+    Float64Array
+   ],
+
+  get: function(columnName) {
+    var i = this._headersIndex[columnName]
+    if(i != undefined) {
+      return this.sections[i + 1]
+    }
+    return;
+  },
+
+  _paddingFor: function(offset, type) {
+    var s = this.sizes[type]
+    if(s) {
+      var r = offset % s;
+      return r == 0 ? 0 : s - r;
+    }
+    return 0;
+  },
+
+  readUInt32: function() {
+    var i = new DataView(this.buffer).getUint32(this.offset);
+    this.offset += 4;
+    return i
+  },
+
+  readArray: function() {
+    var type = this.readUInt32();
+    var size = this.readUInt32();
+    if(type < ArrayBufferSer.STRING) {
+      var a = new this.types[type](this.buffer, this.offset, size/this.sizes[type]);
+      this.offset += size;
+      return a;
+    } else if(type == ArrayBufferSer.STRING) {
+      var target = this.offset + size;
+      var b = [];
+      while(this.offset < target) {
+        this.offset += this._paddingFor(this.offset, ArrayBufferSer.INT32);
+        var arr = this.readArray();
+        if(arr) {
+          var str = '';
+          for(var i = 0; i < arr.length; ++i) {
+            str += String.fromCharCode(arr[i]);
+          }
+          b.push(str);
+        }
+        // parse sttring
+      }
+      return b;
+    } else if(type == ArrayBufferSer.BUFFER) {
+      var b = [];
+      var target = this.offset + size;
+      while(this.offset < target) {
+        this.offset += this._paddingFor(this.offset, ArrayBufferSer.INT32);
+        b.push(this.readArray());
+      }
+      return b;
+    }
+  }
+
+};
--- a/client/test.html
+++ b/client/test.html
@@ -0,0 +1,32 @@
+
+<html>
+  <body>
+    <script src="bin_decoder.js"></script>
+    <script>
+      function get(url, callback) {
+        var req = new XMLHttpRequest();
+        req.onreadystatechange = function() {
+          if (req.readyState == 4){
+            if (req.status == 200){
+              callback(req);
+            } else {
+              callback(null);
+            }
+          }
+        };
+        req.open("GET", url, true)
+        req.responseType = 'arraybuffer';
+        req.send(null)
+        return req;
+      }
+
+      var q = 'select%20owner,%20array_agg(lat::integer)%20as%20arr_lat__int8,%20array_agg(long)%20as%20arr_long%20%20%20from%20antenas%20%20group%20by%20owner,%20lat,%20long%20limit%2020';
+
+      get('http://development.localhost.lan:8080/api/v1/sql?q=' + q+ '&format=bin', function(req) {
+        var b = new ArrayBufferSer(req.response);
+        console.log(b.length);
+        window.b = b;
+      });
+    </script>
+  </body>
+</html>