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00020 #ifndef _tdsstring_h_
00021 #define _tdsstring_h_
00022 
00023 
00024 
00025 #if defined(__GNUC__) && __GNUC__ >= 4 && !defined(__MINGW32__)
00026 #pragma GCC visibility push(hidden)
00027 #endif
00028 
00029 extern const char tds_str_empty[1];
00030 
00031 
00032 
00037 #if ENABLE_EXTRA_CHECKS
00038 void tds_dstr_init(DSTR * s);
00039 int tds_dstr_isempty(DSTR * s);
00040 char *tds_dstr_buf(DSTR * s);
00041 size_t tds_dstr_len(DSTR * s);
00042 #else
00043 
00044 #define tds_dstr_init(s) \
00045         do { DSTR *_tds_s = (s); _tds_s->dstr_size = 0; _tds_s->dstr_s = (char*) tds_str_empty; } while(0)
00046 
00048 #define tds_dstr_isempty(s) \
00049         ((s)->dstr_size == 0)
00050 #define tds_dstr_buf(s) \
00051         ((s)->dstr_s)
00052 #define tds_dstr_len(s) \
00053         ((s)->dstr_size)
00054 #endif
00055 
00056 #define tds_dstr_cstr(s) \
00057         ((const char* ) tds_dstr_buf(s))
00058 
00059 void tds_dstr_zero(DSTR * s);
00060 void tds_dstr_free(DSTR * s);
00061 
00062 DSTR* tds_dstr_dup(DSTR * s, const DSTR * src);
00063 DSTR* tds_dstr_copy(DSTR * s, const char *src);
00064 DSTR* tds_dstr_copyn(DSTR * s, const char *src, size_t length);
00065 DSTR* tds_dstr_set(DSTR * s, char *src);
00066 
00068 DSTR* tds_dstr_setlen(DSTR *s, size_t length);
00070 DSTR* tds_dstr_alloc(DSTR *s, size_t length);
00071 
00074 #if defined(__GNUC__) && __GNUC__ >= 4 && !defined(__MINGW32__)
00075 #pragma GCC visibility pop
00076 #endif
00077 
00078 #endif