greenplumn varlena 源码
greenplumn varlena 代码
文件路径：/src/include/utils/varlena.h
/*-------------------------------------------------------------------------
*
* varlena.h
* Functions for the variable-length built-in types.
*
* Portions Copyright (c) 1996-2019, 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, void *regexp,
text *replace_text, bool glob);
#endif
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