From 4d7b1da29e0957ac798ee8e6da8288cbd4ae5c79 Mon Sep 17 00:00:00 2001
From: LaG1924 <12997935+LaG1924@users.noreply.github.com>
Date: Thu, 18 May 2017 19:03:05 +0500
Subject: 2017-05-18

---
 src/utility/utility.cpp | 66 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 src/utility/utility.cpp

(limited to 'src/utility/utility.cpp')

diff --git a/src/utility/utility.cpp b/src/utility/utility.cpp
new file mode 100644
index 0000000..aa50e9f
--- /dev/null
+++ b/src/utility/utility.cpp
@@ -0,0 +1,66 @@
+#include "utility.h"
+
+int VarIntRead(unsigned char *data, size_t &readed) {
+    readed = 0;
+    int result = 0;
+    char read;
+    do {
+        read = data[readed];
+        int value = (read & 0b01111111);
+        result |= (value << (7 * readed));
+
+        readed++;
+        if (readed > 5) {
+            throw "VarInt is too big";
+        }
+    } while ((read & 0b10000000) != 0);
+
+    return result;
+}
+
+size_t VarIntWrite(unsigned int value, unsigned char *data) {
+    size_t len = 0;
+    do {
+        unsigned char temp = (unsigned char) (value & 0b01111111);
+        value >>= 7;
+        if (value != 0) {
+            temp |= 0b10000000;
+        }
+        data[len] = temp;
+        len++;
+    } while (value != 0);
+    return len;
+}
+
+long long int ReadVarLong(unsigned char *data, int &readed) {
+    readed = 0;
+    long long result = 0;
+    unsigned char read;
+    do {
+        read = data[readed];
+        long long value = (read & 0b01111111);
+        result |= (value << (7 * readed));
+
+        readed++;
+        if (readed > 10) {
+            throw "VarLong is too big";
+        }
+    } while ((read & 0b10000000) != 0);
+    return result;
+}
+
+unsigned char *WriteVarLong(unsigned long long int value, int &len) {
+    unsigned char *data = new unsigned char[10];
+    len = 0;
+    do {
+        unsigned char temp = (unsigned char) (value & 0b01111111);
+        value >>= 7;
+        if (value != 0) {
+            temp |= 0b10000000;
+        }
+        data[len] = temp;
+        len++;
+    } while (value != 0);
+
+    return data;
+}
\ No newline at end of file
-- 
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