update stringutils

core/components/string_util.cpp

@@ -96,4 +96,29 @@ bool StringUtil::hexStringToBytes(string in, string delims, vector<uint8_t>& byt
     return false;
   }
   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

@@ -21,24 +21,24 @@ class StringUtil {
 
   /**
    * @brief 替换字符串中的字符，如果new_value="",则删除旧字符
-   * 
-   * @param str 
-   * @param old_value 
-   * @param new_value 
-   * @return string& 
+   *
+   * @param str
+   * @param old_value
+   * @param new_value
+   * @return string&
    */
   string& replaceAllDistinct(string& str, const string& old_value, const string& new_value);
   /**
    * @brief 转换HEX字符串成Bytes数组例如
-   * 
+   *
    * // string("12,0a,2a,ab") ===> char buf[] = {0x12,0x0a,0x2a,0xab}
    * vector<uint8_t> tobytes;
    * hexStringToBytes("12,0a,2a,ab",",",tobytes);
-   * 
+   *
    * // string("120a2aab")    ===> char buf[] = {0x12,0x0a,0x2a,0xab}
    * vector<uint8_t> tobytes;
    * hexStringToBytes("120a2aab","",tobytes);
-   * 
+   *
    * @param in 输入字符串
    * @param delims 分割符
    * @param byteTable 输出的byte数组
@@ -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