src/include/tsearch/ts_locale.h

   1 /*-------------------------------------------------------------------------
   2  *
   3  * ts_locale.h
   4  *              locale compatibility layer for tsearch
   5  *
   6  * Copyright (c) 1998-2009, PostgreSQL Global Development Group
   7  *
   8  * $PostgreSQL$
   9  *
  10  *-------------------------------------------------------------------------
  11  */
  12 #ifndef __TSLOCALE_H__
  13 #define __TSLOCALE_H__
  14
  15 #include <ctype.h>
  16 #include <limits.h>
  17
  18 #include "utils/pg_locale.h"
  19 #include "mb/pg_wchar.h"
  20
  21 /*
  22  * towlower() and friends should be in <wctype.h>, but some pre-C99 systems
  23  * declare them in <wchar.h>.
  24  */
  25 #ifdef HAVE_WCHAR_H
  26 #include <wchar.h>
  27 #endif
  28 #ifdef HAVE_WCTYPE_H
  29 #include <wctype.h>
  30 #endif
  31
  32 /* working state for tsearch_readline (should be a local var in caller) */
  33 typedef struct
  34 {
  35         FILE       *fp;
  36         const char *filename;
  37         int                     lineno;
  38         char       *curline;
  39         ErrorContextCallback cb;
  40 } tsearch_readline_state;
  41
  42 #define TOUCHAR(x)      (*((const unsigned char *) (x)))
  43
  44 #ifdef USE_WIDE_UPPER_LOWER
  45
  46 extern int      t_isdigit(const char *ptr);
  47 extern int      t_isspace(const char *ptr);
  48 extern int      t_isalpha(const char *ptr);
  49 extern int      t_isprint(const char *ptr);
  50
  51 /* The second argument of t_iseq() must be a plain ASCII character */
  52 #define t_iseq(x,c)             (TOUCHAR(x) == (unsigned char) (c))
  53
  54 #define COPYCHAR(d,s)   memcpy(d, s, pg_mblen(s))
  55 #else                                                   /* not USE_WIDE_UPPER_LOWER */
  56
  57 #define t_isdigit(x)    isdigit(TOUCHAR(x))
  58 #define t_isspace(x)    isspace(TOUCHAR(x))
  59 #define t_isalpha(x)    isalpha(TOUCHAR(x))
  60 #define t_isprint(x)    isprint(TOUCHAR(x))
  61 #define t_iseq(x,c)             (TOUCHAR(x) == (unsigned char) (c))
  62
  63 #define COPYCHAR(d,s)   (*((unsigned char *) (d)) = TOUCHAR(s))
  64 #endif   /* USE_WIDE_UPPER_LOWER */
  65
  66 extern char *lowerstr(const char *str);
  67 extern char *lowerstr_with_len(const char *str, int len);
  68
  69 extern bool tsearch_readline_begin(tsearch_readline_state *stp,
  70                                            const char *filename);
  71 extern char *tsearch_readline(tsearch_readline_state *stp);
  72 extern void tsearch_readline_end(tsearch_readline_state *stp);
  73
  74 extern char *t_readline(FILE *fp);
  75
  76 #endif   /* __TSLOCALE_H__ */