Adding upstream version 16.2.upstream/16.2

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 53 insertions, 0 deletions

diff --git a/src/include/utils/varlena.h b/src/include/utils/varlena.h
new file mode 100644
index 0000000..77f5b24
--- /dev/null
+++ b/src/include/utils/varlena.h
@@ -0,0 +1,53 @@
+/*-------------------------------------------------------------------------
+ *
+ * varlena.h
+ *	  Functions for the variable-length built-in types.
+ *
+ * Portions Copyright (c) 1996-2023, PostgreSQL Global Development Group
+ * Portions Copyright (c) 1994, Regents of the University of California
+ *
+ * src/include/utils/varlena.h
+ *
+ *-------------------------------------------------------------------------
+ */
+#ifndef VARLENA_H
+#define VARLENA_H
+
+#include "nodes/pg_list.h"
+#include "utils/sortsupport.h"
+
+extern int	varstr_cmp(const char *arg1, int len1, const char *arg2, int len2, Oid collid);
+extern void varstr_sortsupport(SortSupport ssup, Oid typid, Oid collid);
+extern int	varstr_levenshtein(const char *source, int slen,
+							   const char *target, int tlen,
+							   int ins_c, int del_c, int sub_c,
+							   bool trusted);
+extern int	varstr_levenshtein_less_equal(const char *source, int slen,
+										  const char *target, int tlen,
+										  int ins_c, int del_c, int sub_c,
+										  int max_d, bool trusted);
+extern List *textToQualifiedNameList(text *textval);
+extern bool SplitIdentifierString(char *rawstring, char separator,
+								  List **namelist);
+extern bool SplitDirectoriesString(char *rawstring, char separator,
+								   List **namelist);
+extern bool SplitGUCList(char *rawstring, char separator,
+						 List **namelist);
+extern text *replace_text_regexp(text *src_text, text *pattern_text,
+								 text *replace_text,
+								 int cflags, Oid collation,
+								 int search_start, int n);
+
+typedef struct ClosestMatchState
+{
+	const char *source;
+	int			min_d;
+	int			max_d;
+	const char *match;
+} ClosestMatchState;
+
+extern void initClosestMatch(ClosestMatchState *state, const char *source, int max_d);
+extern void updateClosestMatch(ClosestMatchState *state, const char *candidate);
+extern const char *getClosestMatch(ClosestMatchState *state);
+
+#endif