LCOV - code coverage report
Current view: top level - source/ps - utf16string.h (source / functions) Hit Total Coverage
Test: 0 A.D. test coverage report Lines: 3 6 50.0 %
Date: 2021-09-24 14:46:47 Functions: 0 1 0.0 %

          Line data    Source code
       1             : /* Copyright (C) 2020 Wildfire Games.
       2             :  * This file is part of 0 A.D.
       3             :  *
       4             :  * 0 A.D. is free software: you can redistribute it and/or modify
       5             :  * it under the terms of the GNU General Public License as published by
       6             :  * the Free Software Foundation, either version 2 of the License, or
       7             :  * (at your option) any later version.
       8             :  *
       9             :  * 0 A.D. is distributed in the hope that it will be useful,
      10             :  * but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             :  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
      12             :  * GNU General Public License for more details.
      13             :  *
      14             :  * You should have received a copy of the GNU General Public License
      15             :  * along with 0 A.D.  If not, see <http://www.gnu.org/licenses/>.
      16             :  */
      17             : 
      18             : /*
      19             :     A basic_string derivative that works with uint16_t as its underlying char
      20             :     type.
      21             : */
      22             : #ifndef INCLUDED_UTF16STRING
      23             : #define INCLUDED_UTF16STRING
      24             : 
      25             : // On Linux, wchar_t is 32-bit, so define a new version of it.
      26             : // We now use this code on Windows as well, because wchar_t is a
      27             : // native type and distinct from utf16_t.
      28             : #include <algorithm>
      29             : #include <cstring>
      30             : #include <memory>
      31             : #include <string>
      32             : 
      33             : 
      34             : typedef uint16_t utf16_t;
      35             : 
      36             : // jw: this was originally defined in the std namespace, which is at
      37             : // least frowned upon if not illegal. giving it a new name and passing it
      38             : // as a template parameter is the "correct" and safe way.
      39             : 
      40             : struct utf16_traits
      41             : {
      42             :     typedef utf16_t     char_type;
      43             :     typedef int         int_type;
      44             :     typedef std::streampos  pos_type;
      45             :     typedef std::streamoff  off_type;
      46             :     typedef std::mbstate_t  state_type;
      47             : 
      48           0 :     static void assign(char_type& c1, const char_type& c2)
      49      195303 :     { c1 = c2; }
      50             : 
      51             :     static bool eq(const char_type& c1, const char_type& c2)
      52             :     { return c1 == c2; }
      53             : 
      54             :     static bool lt(const char_type& c1, const char_type& c2)
      55             :     { return c1 < c2; }
      56             : 
      57             :     static int compare(const char_type* s1, const char_type* s2, size_t n)
      58             :     {
      59             :         return memcmp(s1, s2, n*sizeof(char_type));
      60             :     }
      61             : 
      62             :     static size_t length(const char_type* s)
      63             :     {
      64             :         const char_type* end=s;
      65             :         while (*end) end++;
      66             :         return (size_t)(end-s);
      67             :     }
      68             : 
      69             :     static const char_type* find(const char_type* s, size_t n, const char_type& a)
      70             :     {
      71             :         const char_type *end = s+n;
      72             :         const char_type *res = std::find(s, end, a);
      73             :         return (res != end)?res:NULL;
      74             :     }
      75             : 
      76             :     static char_type* move(char_type* s1, const char_type* s2, size_t n)
      77             :     {
      78           0 :         return (char_type *)memmove(s1, s2, n*sizeof(char_type));
      79             :     }
      80             : 
      81             :     static char_type* copy(char_type* s1, const char_type* s2, size_t n)
      82             :     {
      83           0 :         return (char_type *)memcpy(s1, s2, n*sizeof(char_type));
      84             :     }
      85             : 
      86             :     static char_type* assign(char_type* s, size_t n, char_type a)
      87             :     {
      88          24 :         while (n--)
      89             :         {
      90          18 :             s[n]=a;
      91             :         }
      92             :         return s;
      93             :     }
      94             : 
      95             :     static char_type to_char_type(const int_type& c)
      96             :     { return (char_type)c; }
      97             : 
      98             :     static int_type to_int_type(const char_type& c)
      99             :     { return (int_type)c; }
     100             : 
     101             :     static bool eq_int_type(const int_type& c1, const int_type& c2)
     102             :     { return c1 == c2; }
     103             : 
     104             :     static int_type eof()
     105             :     { return -1; }
     106             : 
     107             :     static int_type not_eof(const int_type& c)
     108             :     { return (c == -1) ? 0 : c; }
     109             : };
     110             : 
     111             : typedef std::basic_string<utf16_t, utf16_traits> utf16string;
     112             : typedef std::basic_stringstream<utf16_t, utf16_traits> utf16stringstream;
     113             : 
     114             : #endif

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