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- /* Copyright (c) 1989 Citadel */
- /* All Rights Reserved */
-
- /* #ident "@(#)cbdelcur.c 1.5 - 91/09/23" */
-
- #include <ansi.h>
-
- /* ansi headers */
- #include <errno.h>
- #ifdef AC_STDDEF
- #include <stddef.h>
- #endif
- #ifdef AC_STDLIB
- #include <stdlib.h>
- #endif
- #ifdef AC_STRING
- #include <string.h>
- #endif
-
- /* local headers */
- #include "cbase_.h"
-
- /*man---------------------------------------------------------------------------
- NAME
- cbdelcur - delete current cbase record
-
- SYNOPSIS
- #include <cbase.h>
-
- int cbdelcur(cbp)
- cbase_t *cbp;
-
- DESCRIPTION
- The cbdelcur function deletes the current record of cbase cbp.
- The record cursor is set to the record following the deleted
- record. All key cursors are set to null.
-
- cbdelcur will fail if one or more of the following is true:
-
- [EINVAL] cbp is not a valid cbase pointer.
- [CBELOCK] cbp is not write locked.
- [CBENOPEN] cbp is not open.
- [CBENREC] The record cursor of cbp is null.
-
- SEE ALSO
- cbinsert, cbrcursor.
-
- DIAGNOSTICS
- Upon successful completion, a value of 0 is returned. Otherwise,
- a value of -1 is returned, and errno set to indicate the error.
-
- ------------------------------------------------------------------------------*/
- #ifdef AC_PROTO
- int cbdelcur(cbase_t * cbp)
- #else
- int cbdelcur(cbp)
- cbase_t * cbp;
- #endif
- {
- lspos_t lspos = NIL;
- cbrpos_t cbrpos = NIL;
- void * buf = NULL;
- int i = 0;
-
- /* validate arguments */
- if (!cb_valid(cbp)) {
- errno = EINVAL;
- return -1;
- }
-
- /* check if not open */
- if (!(cbp->flags & CBOPEN)) {
- errno = CBENOPEN;
- return -1;
- }
-
- /* check if not write locked */
- if (!(cbp->flags & CBWRLCK)) {
- errno = CBELOCK;
- return -1;
- }
-
- /* check if record cursor is null */
- if (lscursor(cbp->lsp) == NULL) {
- errno = CBENREC;
- return -1;
- }
-
- /* get record position */
- if (lsgetcur(cbp->lsp, &lspos) == -1) {
- CBEPRINT;
- return -1;
- }
- cbrpos = lspos;
-
- /* delete keys */
- for (i = 0; i < cbp->fldc; ++i) {
- if (cbp->fldv[i].flags & CB_FKEY) {
- buf = calloc((size_t)1, cbp->fldv[i].len + sizeof(cbrpos_t));
- if (buf == NULL) {
- CBEPRINT;
- errno = ENOMEM;
- return -1;
- }
- if (lsgetrf(cbp->lsp, cbp->fldv[i].offset, buf, cbp->fldv[i].len) == -1) {
- CBEPRINT;
- free(buf);
- return -1;
- }
- memcpy((char *)buf + cbp->fldv[i].len, &cbrpos, sizeof(cbrpos_t));
- if (btdelete(cbp->btpv[i], buf) == -1) {
- CBEPRINT;
- free(buf);
- return -1;
- }
- free(buf);
- buf = NULL;
- }
- }
-
- /* delete current record */
- if (lsdelcur(cbp->lsp) == -1) {
- CBEPRINT;
- return -1;
- }
-
- return 0;
- }