update stringutils

core/components/string_util.cpp

@@ -97,3 +97,28 @@ bool StringUtil::hexStringToBytes(string in, string delims, vector<uint8_t>& byt
   }
   return true;
 }
+
+/**
+ * @brief
+ *
+ * @param value
+ * @return string
+ */
+string StringUtil::bytet2Binary(uint32_t value, int bitCount, bool remoteZero) {
+  string ret;
+  for (int i = 0; i < bitCount; ++i) {
+    uint32_t bit = value & 0x01;
+    value = value >> 1;
+    if (bit == 0) {
+      ret = "0" + ret;
+    } else {
+      ret = "1" + ret;
+    }
+  }
+  if (remoteZero) {
+    while (ret[0] == '0') {
+      ret = ret.substr(1);
+    }
+  }
+  return ret;
+}

core/components/string_util.hpp

@@ -46,6 +46,21 @@ class StringUtil {
    * @return false 转换失败
    */
   bool hexStringToBytes(string in, string delims, vector<uint8_t>& byteTable);
+
+  /**
+   * @brief
+   *
+   * @param value 0x55
+   * @param bitCount 8
+   * @param remoteZero true/false
+   * @return string  01010101
+   *
+   * Demo:
+   *  StringUtil::bytet2Binary(0x55,8,true)  ===> 1010101
+   *  StringUtil::bytet2Binary(0x55,8,false) ===> 01010101
+   *
+   */
+  string bytet2Binary(uint32_t value, int bitCount, bool remoteZero = true);
 };
 
 }  // namespace core