初始化

uni_modules/UniDevTools/node_modules/licia/vlq.js

@@ -0,0 +1,69 @@
+var toArr = require('./toArr');
+
+exports = {
+    encode: function(arr) {
+        arr = toArr(arr);
+        var ret = '';
+        for (var i = 0, len = arr.length; i < len; i++) {
+            ret += encode(arr[i]);
+        }
+        return ret;
+    },
+    decode: function(str) {
+        var ret = [];
+        var i = 0;
+        var len = str.length;
+        while (i < len) {
+            var value = 0;
+            var continuation = false;
+            var shift = 0;
+            do {
+                var digit = charToInt[str[i++]];
+                continuation = (digit & VLQ_CONTINUATION_BIT) !== 0;
+                digit &= VLQ_BASE_MASK;
+                value = value + (digit << shift);
+                shift = shift + VLQ_BASE_SHIFT;
+            } while (continuation);
+            ret.push(fromVLQSigned(value));
+        }
+        return ret;
+    }
+};
+var charToInt = {};
+var intToChar = {};
+var chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/=';
+for (var i = 0, len = chars.length; i < len; i++) {
+    charToInt[chars[i]] = i;
+    intToChar[i] = chars[i];
+}
+var VLQ_BASE_SHIFT = 5;
+var VLQ_BASE = 1 << VLQ_BASE_SHIFT;
+var VLQ_BASE_MASK = VLQ_BASE - 1;
+var VLQ_CONTINUATION_BIT = VLQ_BASE;
+function encode(value) {
+    var ret = '';
+    value = toVLQSigned(value);
+    do {
+        var digit = value & VLQ_BASE_MASK;
+        value >>>= VLQ_BASE_SHIFT;
+        if (value > 0) {
+            digit |= VLQ_CONTINUATION_BIT;
+        }
+        ret += intToChar[digit];
+    } while (value > 0);
+    return ret;
+}
+function toVLQSigned(value) {
+    if (value < 0) {
+        return (-value << 1) + 1;
+    } else {
+        return (value << 1) + 0;
+    }
+}
+function fromVLQSigned(value) {
+    var negate = (value & 1) === 1;
+    value = value >> 1;
+    return negate ? -value : value;
+}
+
+module.exports = exports;