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Add new escaping functions PQescapeLiteral and PQescapeIdentifier.

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PQescapeLiteral is similar to PQescapeStringConn, but it relieves the
caller of the need to know how large the output buffer should be, and
it provides the appropriate quoting (in addition to escaping special
characers within the string).  PQescapeIdentifier provides similar
functionality for escaping identifiers.

Per recent discussion with Tom Lane.
This commit is contained in:
Robert Haas
2010-01-21 14:58:53 +00:00
parent ed1d3f5ecf
commit d66679672f
4 changed files with 254 additions and 16 deletions
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4
src/interfaces/libpq/libpq-fe.h
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@@ -7,7 +7,7 @@
* Portions Copyright (c) 1996-2010, PostgreSQL Global Development Group
* Portions Copyright (c) 1994, Regents of the University of California
*
* $PostgreSQL: pgsql/src/interfaces/libpq/libpq-fe.h,v 1.148 2010/01/02 16:58:12 momjian Exp $
* $PostgreSQL: pgsql/src/interfaces/libpq/libpq-fe.h,v 1.149 2010/01/21 14:58:53 rhaas Exp $
*
*-------------------------------------------------------------------------
*/
@@ -471,6 +471,8 @@ extern int PQsetvalue(PGresult *res, int tup_num, int field_num, char *value, in
extern size_t PQescapeStringConn(PGconn *conn,
char *to, const char *from, size_t length,
int *error);
extern char *PQescapeLiteral(PGconn *conn, const char *str, size_t len);
extern char *PQescapeIdentifier(PGconn *conn, const char *str, size_t len);
extern unsigned char *PQescapeByteaConn(PGconn *conn,
const unsigned char *from, size_t from_length,
size_t *to_length);