src/include/tsearch/ts_locale.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * ts_locale.h
   4  *              locale compatibility layer for tsearch
   5  *
   6  * Copyright (c) 1998-2025, PostgreSQL Global Development Group
   7  *
   8  * src/include/tsearch/ts_locale.h
   9  *
  10  *-------------------------------------------------------------------------
  11  */
  12 #ifndef __TSLOCALE_H__
  13 #define __TSLOCALE_H__
  14
  15 #include <ctype.h>
  16 #include <limits.h>
  17 #include <wctype.h>
  18
  19 #include "lib/stringinfo.h"
  20 #include "mb/pg_wchar.h"
  21 #include "utils/pg_locale.h"
  22
  23 /* working state for tsearch_readline (should be a local var in caller) */
  24 typedef struct
  25 {
  26         FILE       *fp;
  27         const char *filename;
  28         int                     lineno;
  29         StringInfoData buf;                     /* current input line, in UTF-8 */
  30         char       *curline;            /* current input line, in DB's encoding */
  31         /* curline may be NULL, or equal to buf.data, or a palloc'd string */
  32         ErrorContextCallback cb;
  33 } tsearch_readline_state;
  34
  35 #define TOUCHAR(x)      (*((const unsigned char *) (x)))
  36
  37 /* The second argument of t_iseq() must be a plain ASCII character */
  38 #define t_iseq(x,c)             (TOUCHAR(x) == (unsigned char) (c))
  39
  40 #define COPYCHAR(d,s)   memcpy(d, s, pg_mblen(s))
  41
  42 extern int      t_isalpha(const char *ptr);
  43 extern int      t_isalnum(const char *ptr);
  44
  45 extern bool tsearch_readline_begin(tsearch_readline_state *stp,
  46                                                                    const char *filename);
  47 extern char *tsearch_readline(tsearch_readline_state *stp);
  48 extern void tsearch_readline_end(tsearch_readline_state *stp);
  49
  50 #endif                                                  /* __TSLOCALE_H__ */