lib/sstring.h

   1 /* sstring.h - Declaration of "static strings" functions */
   2
   3 #ifndef __SSTRING_H
   4 #define __SSTRING_H
   5
   6 #define SSTRING_COMPAT
   7
   8 #ifdef COMPILING_SSTRING
   9
  10 #ifdef SSTRING_NEW
  11
  12 /* this is here for compatibility reasons with old sstring */
  13 /* this should be used when old sstring is removed entirely */
  14 #ifdef SSTRING_COMPAT
  15
  16 typedef struct sstring {
  17   char *content;
  18   short length;
  19   short alloc;
  20   struct sstring *next;
  21 #ifdef USE_VALGRIND
  22   void *block;
  23 #endif
  24   unsigned long refcount;
  25   char __content[];
  26 } sstring;
  27
  28 #define sstring_content(x) (x)->__content
  29
  30 #else /* SSTRING_COMPAT */
  31
  32 typedef struct sstring {
  33   short length;
  34   short alloc;
  35   struct sstring *next;
  36 #ifdef USE_VALGRIND
  37   void *block;
  38 #endif
  39   unsigned long refcount;
  40   char content[];
  41 } sstring;
  42
  43 #define sstring_content(x) (x)->content
  44
  45 #endif /* SSTRING_COMPAT */
  46
  47 #else /* SSTRING_NEW */
  48
  49 /* this is the old format */
  50
  51 /* Internal version of structure */
  52 typedef struct {
  53   char *content;
  54   union {
  55     struct {
  56       short length;
  57       short alloc;
  58     } l;
  59     void *next;
  60   } u;
  61 } sstring;
  62
  63 #endif /* SSTRING_NEW */
  64
  65 /* Internal defines */
  66
  67 /* SSTRING_MAXLEN is the internal version of SSTRING_MAX which includes
  68  * space for the trailing NUL */
  69 #define SSTRING_MAXLEN      (SSTRING_MAX + 1)
  70 #define SSTRING_SLACK       8
  71
  72 /* new sstring defines */
  73 #define SSTRING_ALLOC       16384
  74
  75 #define SSTRING_HASHSIZE    85243
  76
  77 /* old sstring defines */
  78 #define SSTRING_STRUCTALLOC 4096
  79 #define SSTRING_DATAALLOC   4096
  80
  81 #else
  82
  83 typedef struct sstring {
  84   char *content;
  85   short length;
  86 } sstring;
  87
  88 #endif /* COMPILING_SSTRING */
  89
  90 /* Externally visibly max string length */
  91 #define SSTRING_MAX     512
  92
  93 sstring *getsstring(const char *, int);
  94 void freesstring(sstring *);
  95 int sstringcompare(sstring *ss1, sstring *ss2);
  96 void initsstring();
  97 void finisstring();
  98
  99 #endif /* __SSTRING_H */