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Add libpq function PQconninfo()

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This allows a caller to get back the exact conninfo array that was
used to create a connection, including parameters read from the
environment.

In doing this, restructure how options are copied from the conninfo
to the actual connection.

Zoltan Boszormenyi and Magnus Hagander
This commit is contained in:
Magnus Hagander
2012-11-30 15:09:18 +09:00
parent 4af446e7cd
commit 65c3bf19fd
4 changed files with 194 additions and 106 deletions
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3
src/interfaces/libpq/libpq-fe.h
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@@ -262,6 +262,9 @@ extern PQconninfoOption *PQconndefaults(void);
/* parse connection options in same way as PQconnectdb */
extern PQconninfoOption *PQconninfoParse(const char *conninfo, char **errmsg);
/* return the connection options used by a live connection */
extern PQconninfoOption *PQconninfo(PGconn *conn);
/* free the data structure returned by PQconndefaults() or PQconninfoParse() */
extern void PQconninfoFree(PQconninfoOption *connOptions);