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Enhance user function API to support association of meta-data with constant

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arguments and the specification of text encoding preference. The LIKE
operator takes advantage of both. (CVS 1534)

FossilOrigin-Name: 92337d8f79b9754cd61c73e7db2e792a1f482f50
This commit is contained in:
danielk1977
2004-06-06 09:44:03 +00:00
parent 51c6d9633f
commit d02eb1fdf4
12 changed files with 491 additions and 189 deletions
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9
src/sqlite.h.in
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@@ -12,7 +12,7 @@
** This header file defines the interface that the SQLite library
** presents to client programs.
**
** @(#) $Id: sqlite.h.in,v 1.92 2004/06/05 10:22:18 danielk1977 Exp $
** @(#) $Id: sqlite.h.in,v 1.93 2004/06/06 09:44:04 danielk1977 Exp $
*/
#ifndef _SQLITE_H_
#define _SQLITE_H_
@@ -835,6 +835,13 @@ int sqlite3_reset(sqlite3_stmt *pStmt);
** aggregate takes. If this parameter is negative, then the function or
** aggregate may take any number of arguments.
**
** If the fourth parameter is non-zero, this indicates that the function is
** more likely to handle text in UTF-16 encoding than UTF-8. This does not
** change the behaviour of the programming interface. However, if two
** versions of the same function are registered, one with eTextRep non-zero
** and the other zero, SQLite invokes the version likely to minimize
** conversions between unicode encodings.
**
** The seventh, eighth and ninth parameters, xFunc, xStep and xFinal, are
** pointers to user implemented C functions that implement the user
** function or aggregate. A scalar function requires an implementation of