path.h

   1 //uchime by Robert C. Edgar http://drive5.com/uchime This code is donated to the public domain.\r
   2 \r
   3 #ifndef path_h\r
   4 #define path_h\r
   5 \r
   6 struct PathData\r
   7         {\r
   8 private:\r
   9         PathData(PathData &);\r
  10         PathData &operator=(PathData &);\r
  11 \r
  12 public:\r
  13         char *Start;\r
  14         char *Front;\r
  15         char *Back;\r
  16         unsigned Bytes;\r
  17 \r
  18 public:\r
  19         PathData()\r
  20                 {\r
  21                 Clear(true);\r
  22                 }\r
  23         ~PathData()\r
  24                 {\r
  25                 Free();\r
  26                 }\r
  27         void Free();\r
  28         void Alloc(unsigned MaxLen);\r
  29         void Clear(bool ctor = false)\r
  30                 {\r
  31                 Start = 0;\r
  32                 if (ctor)\r
  33                         {\r
  34                         Front = 0;\r
  35                         Back = 0;\r
  36                         Bytes = 0;\r
  37                         }\r
  38                 else\r
  39                         Free();\r
  40                 }\r
  41         void Copy(const PathData &rhs);\r
  42         void FromStr(const char *PathStr);\r
  43         void Reverse()\r
  44                 {\r
  45                 asserta(Start != 0);\r
  46                 unsigned L = (unsigned) strlen(Start);\r
  47                 for (unsigned k = 0; k < L/2; ++k)\r
  48                         {\r
  49                         char c = Start[k];\r
  50                         Start[k] = Start[L-k-1];\r
  51                         Start[L-k-1] = c;\r
  52                         }\r
  53                 }\r
  54         void SetEmpty()\r
  55                 {\r
  56                 Start = 0;\r
  57                 }\r
  58 \r
  59         bool IsEmpty() const\r
  60                 {\r
  61                 return Start == 0;\r
  62                 }\r
  63         };\r
  64 \r
  65 #endif // path_h\r