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campo-sirio/cb5/d4append.c
alex ce1bdeb801 This commit was generated by cvs2svn to compensate for changes in r2520, 
which included commits to RCS files with non-trunk default branches.

git-svn-id: svn://10.65.10.50/trunk@2521 c028cbd2-c16b-5b4b-a496-9718f37d4682
1996-01-29 13:22:31 +00:00

324 lines
7.7 KiB
C
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/* d4append.c (c)Copyright Sequiter Software Inc., 1990-1994. All rights reserved. */
#include "d4all.h"
#ifndef S4UNIX
#ifdef __TURBOC__
#pragma hdrstop
#endif /* __TUROBC__ */
#endif /* S4UNIX */
#ifndef S4OFF_WRITE
int S4FUNCTION d4append( DATA4 *data )
{
int rc, save_error, i , ntag;
long new_id ;
#ifndef S4INDEX_OFF
TAG4 *tag_on ;
#ifndef S4SINGLE
int index_locked ;
#endif
#endif
#ifndef S4MEMO_OFF
F4MEMO *mfield ;
#endif /* not S4MEMO_OFF */
#ifdef S4VBASIC
if ( c4parm_check( data, 2, E4_D4APPEND ) )
return -1 ;
#endif /* S4VBASIC */
if ( data == 0 )
#ifdef S4DEBUG
e4severe( e4parm, E4_D4APPEND ) ;
#else
return -1 ;
#endif
if ( data->code_base->error_code < 0 )
return -1 ;
#ifdef S4DEBUG
if ( data->rec_num )
{
e4describe( data->code_base, e4result, E4_D4APPEND, E4_RESULT_D4A, 0 ) ;
return -1 ;
}
#endif /* S4DEBUG */
/* 0. Lock record count bytes
1. Update index file
2. Update memo File
3. Update data file */
#ifndef S4OPTIMIZE_OFF
#ifndef S4DETECT_OFF
data->code_base->mode |= 0x10 ;
#endif /* S4DETECT_OFF */
#endif
#ifndef S4SINGLE
rc = d4lock_append( data ) ;
if ( rc )
return rc ;
data->num_recs = -1 ;
#ifndef S4OPTIMIZE_OFF
data->code_base->opt.force_current = 1 ; /* force the reccount to be current */
#endif
rc = d4lock( data, d4reccount( data ) + 1 ) ;
#ifndef S4OPTIMIZE_OFF
data->code_base->opt.force_current = 0 ;
#endif
if ( rc )
{
d4unlock_append( data ) ;
return rc ;
}
#endif /* S4SINGLE */
data->bof_flag = data->eof_flag = 0 ;
data->record_changed = 0 ;
data->rec_num = d4reccount( data ) + 1 ;
#ifndef S4INDEX_OFF
#ifndef S4SINGLE
index_locked = d4lock_test_index( data ) ;
if ( !index_locked )
{
rc = d4lock_index( data ) ;
if ( rc )
{
d4unlock_append( data ) ;
return rc ;
}
}
#endif /* not S4SINGLE */
for( tag_on = 0, ntag = 0;; ntag++)
{
tag_on = d4tag_next( data, tag_on ) ;
if ( !tag_on )
break ;
rc = t4add_calc( tag_on, data->rec_num ) ;
if ( rc < 0 || rc == r4unique )
{
save_error = e4set( data->code_base, 0 ) ;
/* Remove the keys which were just added */
for(;;)
{
tag_on = d4tag_prev( data, tag_on ) ;
if ( !tag_on )
break ;
t4remove_calc( tag_on, data->rec_num ) ;
}
e4set( data->code_base, save_error ) ;
data->rec_num = 0;
#ifndef S4SINGLE
d4unlock_append( data ) ;
if ( !index_locked )
d4unlock_index( data ) ;
#endif
if (rc == e4unique)
data->rec_num = ntag; /* 2nd hammer shot */
return rc ;
}
}
#ifndef S4SINGLE
if ( !index_locked )
d4unlock_index( data ) ;
#endif /* not S4SINGLE */
#endif /* not S4INDEX_OFF */
#ifndef S4MEMO_OFF
for ( i = 0 ; i < data->n_fields_memo ; i++ )
{
mfield = data->fields_memo+i ;
mfield->is_changed = 0 ;
if ( mfield->len > 0 )
{
new_id = 0L ;
if ( memo4file_write( &data->memo_file, &new_id, mfield->contents, mfield->len ) ) /* positive value means fail, so don't update field, but append record */
break ;
f4assign_long( mfield->field, new_id ) ;
}
else
f4assign( mfield->field, " " ) ;
}
#endif /* S4MEMO_OFF */
rc = d4append_data( data ) ;
if ( !rc )
rc = d4update_header( data, 1, 1 ) ;
#ifndef S4SINGLE
d4unlock_append( data ) ;
#endif /* S4SINGLE */
return rc ;
}
int S4FUNCTION d4append_blank( DATA4 *data )
{
int rc ;
#ifdef S4VBASIC
if ( c4parm_check( data, 2, E4_D4APPEND_BL ) )
return -1 ;
#endif /* S4VBASIC */
if ( data == 0 )
#ifdef S4DEBUG
e4severe( e4parm, E4_D4APPEND_BL ) ;
#else
return -1 ;
#endif
#ifdef S4DEMO
if ( d4reccount( data ) >= 200L)
{
e4( data->code_base, e4demo, 0 ) ;
d4close( data ) ;
return 0 ;
}
#endif /* S4DEMO */
rc = d4append_start( data, 0 ) ; /* updates the record, returns -1 if code_base->error_code < 0 */
if ( rc )
return rc ;
memset( data->record, ' ', data->record_width ) ;
return d4append( data ) ;
}
int S4FUNCTION d4append_data( DATA4 *data )
{
long count, pos ;
int rc ;
if ( data == 0 )
#ifdef S4DEBUG
e4severe( e4parm, E4_D4APPEND_DATA ) ;
#else
return -1 ;
#endif
#ifdef S4DEMO
if ( d4reccount( data ) >= 200L)
{
e4( data->code_base, e4demo, 0 ) ;
d4close( data ) ;
return 0 ;
}
#endif /* S4DEMO */
count = d4reccount( data ) ; /* returns -1 if code_base->error_code < 0 */
if ( count < 0L )
return -1 ;
data->file_changed = 1 ;
pos = d4record_position( data, count + 1L ) ;
data->record[data->record_width] = 0x1A ;
rc = file4write( &data->file, pos, data->record, ( data->record_width + 1 ) ) ;
if ( rc >= 0 )
{
data->rec_num = count + 1L ;
data->record_changed = 0 ;
#ifndef S4SINGLE
if ( d4lock_test_append( data ) )
#endif /* S4SINGLE */
data->num_recs = count + 1L ;
}
data->record[data->record_width] = 0 ;
return rc ;
}
int S4FUNCTION d4append_start( DATA4 *data, int use_memo_entries )
{
int rc, i ;
char *save_ptr ;
#ifdef S4VBASIC
if ( c4parm_check( data, 2, E4_D4APPEND_STRT ) )
return -1 ;
#endif /* S4VBASIC */
if ( data == 0 )
#ifdef S4DEBUG
e4severe( e4parm, E4_D4APPEND_STRT ) ;
#else
return -1 ;
#endif
#ifdef S4DEMO
if ( d4reccount( data ) >= 200L)
{
e4( data->code_base, e4demo, 0 ) ;
d4close( data ) ;
return 0 ;
}
#endif /* S4DEMO */
rc = d4update_record( data, 1 ) ; /* returns -1 if code_base->error_code < 0 */
if ( rc )
return rc ;
if ( data->rec_num <= 0 )
use_memo_entries = 0 ;
#ifndef S4MEMO_OFF
if ( use_memo_entries && data->n_fields_memo > 0 )
{
#ifdef S4DEBUG
if ( !file4open_test( &data->memo_file.file ) )
e4severe( e4data, E4_DATA_MEM ) ;
#endif /* S4DEBUG */
/* Read in the current memo entries of the current record */
#ifndef S4SINGLE
rc = d4lock( data, data->rec_num ) ;
if ( rc )
return rc ;
#endif /* S4SINGLE */
save_ptr = data->record ;
data->record = data->record_old ;
d4go_data( data, data->rec_num ) ;
for ( i = 0 ; i < data->n_fields_memo ; i++ )
{
f4memo_read_low( data->fields_memo[i].field ) ;
data->fields_memo[i].status = 0 ;
}
data->record = save_ptr ;
if ( data->code_base->error_code < 0 )
return -1 ;
}
for ( i = 0 ; i < data->n_fields_memo ; i++ )
f4assign_long( data->fields_memo[i].field, 0 ) ;
#endif /* not S4MEMO_OFF */
#ifndef S4SINGLE
if ( d4lock_test_file( data ) != 1 )
{
rc = d4unlock_data( data ) ;
if ( rc )
return rc ;
}
#endif
data->rec_num = 0 ;
return 0 ;
}
#endif /* S4OFF_WRITE */
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