cosv/inc/cosv/str_types.hxx

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  27
  28 #ifndef COSV_STR_TYPES_HXX
  29 #define COSV_STR_TYPES_HXX
  30
  31
  32 namespace csv
  33 {
  34
  35 /** Provides some generally used constants.
  36 */
  37 struct str
  38 {
  39   public:
  40     typedef ::size_t    position;
  41     typedef ::size_t    size;
  42
  43     enum constants
  44     {
  45         npos = position(-1),
  46         maxsize = size(-1)
  47     };
  48
  49     enum insert_mode
  50     {
  51         overwrite = 0,
  52         insert = 1
  53     };
  54 };
  55
  56
  57 /** Is used for string comparisons.
  58
  59     @collab String
  60     @collab various csv::compare(...) functions
  61 */
  62 class CharOrder_Table
  63 {
  64   public:
  65     /** @precond
  66         Parameter i_pCharWeightsArray
  67         must have size of 256.
  68     */
  69                         CharOrder_Table(
  70                             const int *         i_pCharWeightsArray );
  71
  72     /** @return the weight of the char i_c.
  73         @precond
  74         Even with unusual implementations, where char has more than 8 bit,
  75         there must be true: 0 <= i_c < 256.
  76     */
  77     int                 operator()(
  78                             char                i_c ) const;
  79   private:
  80     int                 cWeights[256];
  81 };
  82
  83
  84 // IMPLEMENTATION
  85
  86 inline int
  87 CharOrder_Table::operator()( char i_c ) const
  88     { return cWeights[ UINT8(i_c) ]; }
  89
  90
  91
  92 }   // namespace csv
  93
  94 #endif