первый

lib/strutil.h

@@ -0,0 +1,103 @@
+////////////////////////////////////////////////////////////////////////////////
+// @(#) strutil.h
+// Utilities for std::string
+// defined in namespace strutil
+// by James Fancy
+////////////////////////////////////////////////////////////////////////////////
+
+#pragma once
+
+#include <string>
+#include <vector>
+#include <sstream>
+#include <iomanip>
+
+// declaration
+namespace strutil {
+
+    std::string trimLeft(const std::string& str);
+    std::string trimRight(const std::string& str);
+    std::string trim(const std::string& str);
+
+    std::string toLower(const std::string& str);
+    std::string toUpper(const std::string& str);
+
+    std::string repeat(char c, int n);
+    std::string repeat(const std::string& str, int n);
+
+    bool startsWith(const std::string& str, const std::string& substr);
+    bool endsWith(const std::string& str, const std::string& substr);
+    bool equalsIgnoreCase(const std::string& str1, const std::string& str2);
+
+    template<class T> T parseString(const std::string& str);
+    template<class T> T parseHexString(const std::string& str);
+    template<bool> bool parseString(const std::string& str);
+
+    template<class T> std::string toString(const T& value);
+    template<class T> std::string toHexString(const T& value, int width = 0);
+    std::string toString(const bool& value);
+
+    std::vector<std::string> split(const std::string& str, const std::string& delimiters);
+}
+
+// Tokenizer class
+namespace strutil {
+    class Tokenizer {
+    public:
+        static const std::string DEFAULT_DELIMITERS;
+        Tokenizer(const std::string& str);
+        Tokenizer(const std::string& str, const std::string& delimiters);
+
+        bool nextToken();
+        bool nextToken(const std::string& delimiters);
+        const std::string getToken() const;
+
+        /**
+        * to reset the tokenizer. After reset it, the tokenizer can get
+        * the tokens from the first token.
+        */
+        void reset();
+
+    protected:
+        size_t m_Offset;
+        const std::string m_String;
+        std::string m_Token;
+        std::string m_Delimiters;
+    };
+
+}
+
+// implementation of template functions
+namespace strutil {
+
+    template<class T> T parseString(const std::string& str) {
+        T value;
+        std::istringstream iss(str);
+        iss >> value;
+        return value;
+    }
+
+    template<class T> T parseHexString(const std::string& str) {
+        T value;
+        std::istringstream iss(str);
+        iss >> hex >> value;
+        return value;
+    }
+
+    template<class T> std::string toString(const T& value) {
+        std::ostringstream oss;
+        oss << value;
+        return oss.str();
+    }
+
+    template<class T> std::string toHexString(const T& value, int width) {
+        std::ostringstream oss;
+        oss << hex;
+        if (width > 0) {
+            oss << setw(width) << setfill('0');
+        }
+        oss << value;
+        return oss.str();
+    }
+
+}