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/*-------------------------------------------------------------------------
*
* pg_backup_null.c
*
* Implementation of an archive that is never saved; it is used by
* pg_dump to output output a plain text SQL script instead of save
* a real archive.
*
* See the headers to pg_restore for more details.
*
* Copyright (c) 2000, Philip Warner
* Rights are granted to use this software in any way so long
* as this notice is not removed.
*
* The author is not responsible for loss or damages that may
* result from it's use.
*
*
* IDENTIFICATION
* $Header: /cvsroot/pgsql/src/bin/pg_dump/pg_backup_null.c,v 1.4 2001/03/19 02:35:28 pjw Exp $
*
* Modifications - 09-Jul-2000 - pjw@rhyme.com.au
*
* Initial version.
*
* Modifications - 04-Jan-2001 - pjw@rhyme.com.au
*
* - Check results of IO routines more carefully.
*
*
*-------------------------------------------------------------------------
*/
#include "pg_backup.h"
#include "pg_backup_archiver.h"
#include <stdlib.h>
#include <string.h>
#include <unistd.h> /* for dup */
static int _WriteData(ArchiveHandle* AH, const void* data, int dLen);
static void _EndData(ArchiveHandle* AH, TocEntry* te);
static int _WriteByte(ArchiveHandle* AH, const int i);
static int _WriteBuf(ArchiveHandle* AH, const void* buf, int len);
static void _CloseArchive(ArchiveHandle* AH);
static void _PrintTocData(ArchiveHandle* AH, TocEntry* te, RestoreOptions *ropt);
/*
* Initializer
*/
void InitArchiveFmt_Null(ArchiveHandle* AH)
{
/* Assuming static functions, this can be copied for each format. */
AH->WriteDataPtr = _WriteData;
AH->EndDataPtr = _EndData;
AH->WriteBytePtr = _WriteByte;
AH->WriteBufPtr = _WriteBuf;
AH->ClosePtr = _CloseArchive;
AH->PrintTocDataPtr = _PrintTocData;
/*
* Now prevent reading...
*/
if (AH->mode == archModeRead)
die_horribly(AH, "%s: This format can not be read\n");
}
/*
* - Start a new TOC entry
*/
/*------
* Called by dumper via archiver from within a data dump routine
* As at V1.3, this is only called for COPY FROM dfata, and BLOB data
*------
*/
static int _WriteData(ArchiveHandle* AH, const void* data, int dLen)
{
/* Just send it to output */
ahwrite(data, 1, dLen, AH);
return dLen;
}
static void _EndData(ArchiveHandle* AH, TocEntry* te)
{
ahprintf(AH, "\n\n");
}
/*------
* Called as part of a RestoreArchive call; for the NULL archive, this
* just sends the data for a given TOC entry to the output.
*------
*/
static void _PrintTocData(ArchiveHandle* AH, TocEntry* te, RestoreOptions *ropt)
{
if (*te->dataDumper)
{
AH->currToc = te;
(*te->dataDumper)((Archive*)AH, te->oid, te->dataDumperArg);
AH->currToc = NULL;
}
}
static int _WriteByte(ArchiveHandle* AH, const int i)
{
/* Don't do anything */
return 0;
}
static int _WriteBuf(ArchiveHandle* AH, const void* buf, int len)
{
/* Don't do anything */
return len;
}
static void _CloseArchive(ArchiveHandle* AH)
{
/* Nothing to do */
}
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