src/include/tsearch/ts_locale.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * ts_locale.h
   4  *              locale compatibility layer for tsearch
   5  *
   6  * Copyright (c) 1998-2021, 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
  18 #include "lib/stringinfo.h"
  19 #include "mb/pg_wchar.h"
  20 #include "utils/pg_locale.h"
  21
  22 /*
  23  * towlower() and friends should be in <wctype.h>, but some pre-C99 systems
  24  * declare them in <wchar.h>, so include that too.
  25  */
  26 #include <wchar.h>
  27 #ifdef HAVE_WCTYPE_H
  28 #include <wctype.h>
  29 #endif
  30
  31 /* working state for tsearch_readline (should be a local var in caller) */
  32 typedef struct
  33 {
  34         FILE       *fp;
  35         const char *filename;
  36         int                     lineno;
  37         StringInfoData buf;                     /* current input line, in UTF-8 */
  38         char       *curline;            /* current input line, in DB's encoding */
  39         /* curline may be NULL, or equal to buf.data, or a palloc'd string */
  40         ErrorContextCallback cb;
  41 } tsearch_readline_state;
  42
  43 #define TOUCHAR(x)      (*((const unsigned char *) (x)))
  44
  45 /* The second argument of t_iseq() must be a plain ASCII character */
  46 #define t_iseq(x,c)             (TOUCHAR(x) == (unsigned char) (c))
  47
  48 #define COPYCHAR(d,s)   memcpy(d, s, pg_mblen(s))
  49
  50 extern int      t_isdigit(const char *ptr);
  51 extern int      t_isspace(const char *ptr);
  52 extern int      t_isalpha(const char *ptr);
  53 extern int      t_isprint(const char *ptr);
  54
  55 extern char *lowerstr(const char *str);
  56 extern char *lowerstr_with_len(const char *str, int len);
  57
  58 extern bool tsearch_readline_begin(tsearch_readline_state *stp,
  59                                                                    const char *filename);
  60 extern char *tsearch_readline(tsearch_readline_state *stp);
  61 extern void tsearch_readline_end(tsearch_readline_state *stp);
  62
  63 #endif                                                  /* __TSLOCALE_H__ */