diff options
| -rw-r--r-- | Makefile.am | 1 | ||||
| -rw-r--r-- | src/util/StringPointer.hxx | 64 |
2 files changed, 65 insertions, 0 deletions
diff --git a/Makefile.am b/Makefile.am index 1422c97f2..a607de4fe 100644 --- a/Makefile.am +++ b/Makefile.am @@ -377,6 +377,7 @@ libutil_a_SOURCES = \ src/util/UTF8.cxx src/util/UTF8.hxx \ src/util/CharUtil.hxx \ src/util/NumberParser.hxx \ + src/util/StringPointer.hxx \ src/util/StringUtil.cxx src/util/StringUtil.hxx \ src/util/WStringUtil.cxx src/util/WStringUtil.hxx \ src/util/StringAPI.hxx \ diff --git a/src/util/StringPointer.hxx b/src/util/StringPointer.hxx new file mode 100644 index 000000000..4859d8265 --- /dev/null +++ b/src/util/StringPointer.hxx @@ -0,0 +1,64 @@ +/* + * Copyright (C) 2015 Max Kellermann <max@duempel.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the + * distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR + * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, + * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) + * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED + * OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef STRING_POINTER_HXX +#define STRING_POINTER_HXX + +/** + * Simple OO wrapper for a const string pointer. + */ +template<typename T=char> +class StringPointer { +public: + typedef T value_type; + typedef T *pointer; + typedef const T *const_pointer; + +private: + const_pointer value; + +public: + StringPointer() = default; + constexpr StringPointer(const_pointer _value) + :value(_value) {} + + /** + * Check if this is a "nulled" instance. A "nulled" instance + * must not be used. + */ + constexpr bool IsNull() const { + return value == nullptr; + } + + constexpr const_pointer c_str() const { + return value; + } +}; + +#endif |