include/xmlreader/span.hxx

   1 /* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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   9  * This file incorporates work covered by the following license notice:
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  14  *   ownership. The ASF licenses this file to you under the Apache
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  17  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  18  */
  19
  20 #ifndef INCLUDED_XMLREADER_SPAN_HXX
  21 #define INCLUDED_XMLREADER_SPAN_HXX
  22
  23 #include <sal/config.h>
  24
  25 #include <cstddef>
  26
  27 #include <sal/types.h>
  28 #include <xmlreader/detail/xmlreaderdllapi.hxx>
  29
  30 namespace rtl { class OUString; }
  31
  32 namespace xmlreader {
  33
  34 struct SAL_WARN_UNUSED OOO_DLLPUBLIC_XMLREADER Span {
  35     char const * begin;
  36     sal_Int32 length;
  37
  38     Span(): begin(nullptr), length(0) {}
  39         // init length to avoid compiler warnings
  40
  41     Span(char const * theBegin, sal_Int32 theLength):
  42         begin(theBegin), length(theLength) {}
  43
  44     template< std::size_t N > explicit Span(char const (& literal)[N]):
  45         begin(literal), length(N - 1)
  46     {}
  47
  48     void clear() throw() { begin = nullptr; }
  49
  50     bool is() const { return begin != nullptr; }
  51
  52     bool equals(Span const & text) const {
  53         return length == text.length
  54             && (rtl_str_compare_WithLength(
  55                     begin, length, text.begin, text.length)
  56                 == 0);
  57     }
  58
  59     bool equals(char const * textBegin, sal_Int32 textLength) const {
  60         return equals(Span(textBegin, textLength));
  61     }
  62
  63     template< std::size_t N > bool equals(char const (& literal)[N])
  64         const
  65     {
  66         return equals(Span(literal, N - 1));
  67     }
  68
  69     rtl::OUString convertFromUtf8() const;
  70 };
  71
  72 }
  73
  74 #endif
  75
  76 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */