Diff: mbed-client/mbed-client/m2mstring.h

Revision:

11:cada08fc8a70

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-client/mbed-client/m2mstring.h	Thu Jun 09 17:08:36 2016 +0000
@@ -0,0 +1,124 @@
+/*
+ * Copyright (c) 2015 ARM Limited. All rights reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ * Licensed under the Apache License, Version 2.0 (the License); you may
+ * not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an AS IS BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include <stddef.h> // size_t
+#include <stdexcept>
+
+class Test_M2MString;
+
+namespace m2m
+{
+
+  /** @brief Simple C++ string class, used as replacement for
+   std::string.
+   */
+  class String
+  {
+    char*     p;           ///< The data
+    size_t    allocated_;  ///< The allocated memory size (including trailing NULL)
+    size_t    size_;       ///< The currently used memory size (excluding trailing NULL)
+
+  public:
+    typedef size_t size_type;
+    static const   size_type npos;
+
+    String();
+    virtual ~String();
+    String(const String&);
+    String(const char*);
+
+    String&  operator=(const char*);
+    String&  operator=(const String&);
+
+    String&  operator+=(const String&);
+    String&  operator+=(const char*);
+    String&  operator+=(char);
+    void     push_back(char);
+
+    //No need for this += is
+    //friend String operator+(const String& lhs, const String& rhs);
+
+    bool     operator==(const char*) const;
+    bool     operator==(const String&) const;
+
+    void     clear();       // set string to empty string (memory remains reserved)
+
+    size_type size()   const   { return size_; }   ///< size without terminating NULL
+    size_type length() const   { return size_; }   ///< as size()
+
+    /// size if fully used
+    size_type capacity() const { return allocated_-1; }
+
+    bool      empty() const    { return size_ == 0; }
+
+    const char*  c_str() const { return p; } ///< raw data
+
+    /** Reserve internal string memory so that n characters can be put into the
+        string (plus 1 for the NULL char). If there is already enough memory,
+        nothing happens, if not, the memory will be realloated to exactly this
+        amount.
+        */
+    void reserve( size_type n);
+
+    /** Resize string. If n is less than the current size, the string will be truncated.
+        If n is larger, the memory will be reallocated to exactly this amount, and
+        the additional characters will be NULL characters.
+        */
+    void resize( size_type n);
+
+    /** Resize string. If n is less than the current size, the string will be truncated.
+        If n is larger, the memory will be reallocated to exactly this amount, and
+        the additional characters will be c characters.
+        */
+    void resize( size_type n, char c);
+
+    /// swap contents
+    void swap( String& );
+
+    String   substr(const size_type pos, size_type length) const;
+
+    // unchecked access:
+    char&    operator[](const size_type i)       { return p[i]; }
+    char     operator[](const size_type i) const { return p[i]; }
+    // checked access:
+    char&    at(const size_type i);
+    char     at(const size_type i) const;
+
+    /// erase len characters at position pos
+    String& erase(size_type pos, size_type len);
+    /// Append n characters of a string
+    String& append(const char* str, size_type n);
+
+    int     compare( size_type pos, size_type len, const String& str ) const;
+    int     compare( size_type pos, size_type len, const char*   str ) const;
+
+    int     find_last_of(char c) const;
+
+  private:
+    // reallocate the internal memory
+    void  new_realloc( size_type n);
+    char* strdup_never_null(const char* other);
+
+    char _return_value;
+
+    friend class ::Test_M2MString;
+
+  };
+  // class
+
+  bool
+  operator<(const String&, const String&);
+
+} // namespace