75 lines
2.2 KiB
C
75 lines
2.2 KiB
C
/*-------------------------------------------------------------------------
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*
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* ts_locale.h
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* locale compatibility layer for tsearch
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*
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* Copyright (c) 1998-2025, PostgreSQL Global Development Group
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*
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* src/include/tsearch/ts_locale.h
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*
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*-------------------------------------------------------------------------
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*/
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#ifndef __TSLOCALE_H__
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#define __TSLOCALE_H__
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#include <ctype.h>
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#include <limits.h>
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#include <wctype.h>
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#include "lib/stringinfo.h"
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#include "mb/pg_wchar.h"
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#include "utils/pg_locale.h"
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/* working state for tsearch_readline (should be a local var in caller) */
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typedef struct
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{
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FILE *fp;
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const char *filename;
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int lineno;
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StringInfoData buf; /* current input line, in UTF-8 */
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char *curline; /* current input line, in DB's encoding */
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/* curline may be NULL, or equal to buf.data, or a palloc'd string */
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ErrorContextCallback cb;
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} tsearch_readline_state;
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#define TOUCHAR(x) (*((const unsigned char *) (x)))
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/* The second argument of t_iseq() must be a plain ASCII character */
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#define t_iseq(x,c) (TOUCHAR(x) == (unsigned char) (c))
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/* Copy multibyte character of known byte length, return byte length. */
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static inline int
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ts_copychar_with_len(void *dest, const void *src, int length)
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{
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memcpy(dest, src, length);
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return length;
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}
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/* Copy multibyte character from null-terminated string, return byte length. */
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static inline int
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ts_copychar_cstr(void *dest, const void *src)
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{
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return ts_copychar_with_len(dest, src, pg_mblen_cstr((const char *) src));
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}
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/* Historical macro for the above. */
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#define COPYCHAR ts_copychar_cstr
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#define GENERATE_T_ISCLASS_DECL(character_class) \
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extern int t_is##character_class##_with_len(const char *ptr, int len); \
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extern int t_is##character_class##_cstr(const char *ptr); \
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extern int t_is##character_class##_unbounded(const char *ptr); \
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\
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/* deprecated */ \
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extern int t_is##character_class(const char *ptr);
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GENERATE_T_ISCLASS_DECL(alnum);
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GENERATE_T_ISCLASS_DECL(alpha);
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extern bool tsearch_readline_begin(tsearch_readline_state *stp,
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const char *filename);
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extern char *tsearch_readline(tsearch_readline_state *stp);
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extern void tsearch_readline_end(tsearch_readline_state *stp);
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#endif /* __TSLOCALE_H__ */
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