Refactoring.

src/core/utils/c_str.h

@@ -0,0 +1,94 @@
+/* XMRig
+ * Copyright 2010      Jeff Garzik <jgarzik@pobox.com>
+ * Copyright 2012-2014 pooler      <pooler@litecoinpool.org>
+ * Copyright 2014      Lucas Jones <https://github.com/lucasjones>
+ * Copyright 2014-2016 Wolf9466    <https://github.com/OhGodAPet>
+ * Copyright 2016      Jay D Dee   <jayddee246@gmail.com>
+ * Copyright 2017-2018 XMR-Stak    <https://github.com/fireice-uk>, <https://github.com/psychocrypt>
+ * Copyright 2016-2018 XMRig       <https://github.com/xmrig>, <support@xmrig.com>
+ *
+ *   This program is free software: you can redistribute it and/or modify
+ *   it under the terms of the GNU General Public License as published by
+ *   the Free Software Foundation, either version 3 of the License, or
+ *   (at your option) any later version.
+ *
+ *   This program is distributed in the hope that it will be useful,
+ *   but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ *   GNU General Public License for more details.
+ *
+ *   You should have received a copy of the GNU General Public License
+ *   along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __C_STR_H__
+#define __C_STR_H__
+
+
+#include <string.h>
+#include <stdlib.h>
+
+#include <stdio.h>
+
+
+namespace xmrig {
+
+
+/**
+ * @brief Simple C string wrapper.
+ *
+ * 1. I know about std:string.
+ * 2. For some reason I prefer don't use std:string in miner, eg because of file size of MSYS2 builds.
+ */
+class c_str
+{
+public:
+    inline c_str() : m_data(nullptr)                {}
+    inline c_str(const char *str) : m_data(nullptr) { set(str); }
+    inline ~c_str()                                 { free(m_data); }
+
+
+    inline void set(const char *str)
+    {
+        free(m_data);
+
+        m_data = str != nullptr ? strdup(str) : nullptr;
+    }
+
+
+    inline void set(char *str)
+    {
+        free(m_data);
+
+        m_data = str;
+    }
+
+
+    inline bool isEqual(const char *str) const
+    {
+        return (m_data != nullptr && str != nullptr && strcmp(m_data, str)) || (m_data == nullptr && m_data == nullptr);
+    }
+
+
+    inline bool isNull() const           { return m_data == nullptr; }
+    inline const char *data() const      { return m_data; }
+    inline size_t size() const           { return m_data == nullptr ? 0 : strlen(m_data); }
+
+
+    inline bool operator!=(const c_str &str) const { return !isEqual(str.data()); }
+    inline bool operator!=(const char *str) const  { return !isEqual(str); }
+    inline bool operator==(const c_str &str) const { return isEqual(str.data()); }
+    inline bool operator==(const char *str) const  { return isEqual(str); }
+    inline c_str &operator=(char *str)             { set(str); return *this; }
+    inline c_str &operator=(const c_str &str)      { set(str.data()); return *this; }
+    inline c_str &operator=(const char *str)       { set(str); return *this; }
+
+
+private:
+    char *m_data;
+};
+
+
+} /* namespace xmrig */
+
+#endif /* __C_STR_H__ */