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db_include/tsearch/ts_locale.h

@@ -0,0 +1,63 @@
+/*-------------------------------------------------------------------------
+ *
+ * ts_locale.h
+ *		locale compatibility layer for tsearch
+ *
+ * Copyright (c) 1998-2021, PostgreSQL Global Development Group
+ *
+ * src/include/tsearch/ts_locale.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef __TSLOCALE_H__
+#define __TSLOCALE_H__
+
+#include <ctype.h>
+#include <limits.h>
+
+#include "lib/stringinfo.h"
+#include "mb/pg_wchar.h"
+#include "utils/pg_locale.h"
+
+/*
+ * towlower() and friends should be in <wctype.h>, but some pre-C99 systems
+ * declare them in <wchar.h>, so include that too.
+ */
+#include <wchar.h>
+#ifdef HAVE_WCTYPE_H
+#include <wctype.h>
+#endif
+
+/* working state for tsearch_readline (should be a local var in caller) */
+typedef struct
+{
+	FILE	   *fp;
+	const char *filename;
+	int			lineno;
+	StringInfoData buf;			/* current input line, in UTF-8 */
+	char	   *curline;		/* current input line, in DB's encoding */
+	/* curline may be NULL, or equal to buf.data, or a palloc'd string */
+	ErrorContextCallback cb;
+} tsearch_readline_state;
+
+#define TOUCHAR(x)	(*((const unsigned char *) (x)))
+
+/* The second argument of t_iseq() must be a plain ASCII character */
+#define t_iseq(x,c)		(TOUCHAR(x) == (unsigned char) (c))
+
+#define COPYCHAR(d,s)	memcpy(d, s, pg_mblen(s))
+
+extern int	t_isdigit(const char *ptr);
+extern int	t_isspace(const char *ptr);
+extern int	t_isalpha(const char *ptr);
+extern int	t_isprint(const char *ptr);
+
+extern char *lowerstr(const char *str);
+extern char *lowerstr_with_len(const char *str, int len);
+
+extern bool tsearch_readline_begin(tsearch_readline_state *stp,
+								   const char *filename);
+extern char *tsearch_readline(tsearch_readline_state *stp);
+extern void tsearch_readline_end(tsearch_readline_state *stp);
+
+#endif							/* __TSLOCALE_H__ */