campo-sirio/cb5/r4reinde.c
alex a0f5e0898b This commit was generated by cvs2svn to compensate for changes in r975,
which included commits to RCS files with non-trunk default branches.

git-svn-id: svn://10.65.10.50/trunk@976 c028cbd2-c16b-5b4b-a496-9718f37d4682
1995-02-06 15:33:45 +00:00

1668 lines
55 KiB
C
Executable File

/* r4reinde.c (c)Copyright Sequiter Software Inc., 1990-1994. All rights reserved. */
#include "d4all.h"
#ifndef S4OFF_WRITE
#ifndef S4INDEX_OFF
#ifndef N4OTHER
#ifndef S4UNIX
#ifdef __TURBOC__
#pragma hdrstop
#endif /* __TURBOC__ */
#endif /* S4UNIX */
#include "r4reinde.h"
int S4FUNCTION i4reindex( INDEX4 *i4 )
{
R4REINDEX reindex ;
int rc ;
#ifndef S4OPTIMIZE_OFF
int has_opt ;
#endif
#ifdef S4FOX
TAG4 *tag_on ;
B4BLOCK *block ;
long r_node, go_to ;
char tag_name[11] ;
int i, len ;
#ifdef S4BYTE_SWAP
char *swap_ptr ;
S4LONG long_val ;
short short_val ;
#endif
#endif /* S4FOX */
#ifdef S4VBASIC
if ( c4parm_check( i4, 0, E4_I4REINDEX ) )
return -1 ;
#endif /* S4VBASIC */
#ifdef S4DEBUG
if ( i4 == 0 )
e4severe( e4parm, E4_I4REINDEX ) ;
#endif
if ( i4->code_base->error_code < 0 )
return -1 ;
#ifndef S4OPTIMIZE_OFF
#ifndef S4DETECT_OFF
i4->code_base->mode |= 0x40 ;
#endif /* S4DETECT_OFF */
has_opt = i4->code_base->has_opt ;
d4opt_suspend( i4->code_base ) ;
#endif /* not S4OPTIMIZE_OFF */
#ifndef S4SINGLE
rc = i4lock( i4 ) ;
if ( rc )
return rc ;
#endif /* S4SINGLE */
if ( r4reindex_init( &reindex, i4 ) < 0 )
return -1 ;
if ( r4reindex_tag_headers_calc( &reindex ) < 0 )
return -1 ;
if ( r4reindex_blocks_alloc(&reindex) < 0 )
return -1 ;
#ifndef S4SINGLE
#ifdef S4FOX
if ( i4->file.is_exclusive == 0 )
i4->tag_index->header.version = i4->version_old+1 ;
#endif
#endif
#ifdef S4FOX
reindex.n_blocks_used = 0 ;
tag_name[10] = '\0' ;
if ( i4->tag_index->header.type_code >= 64 ) /* if .cdx */
{
reindex.tag = i4->tag_index ;
if ( sort4init( &reindex.sort, i4->code_base, i4->tag_index->header.key_len, 0 ) < 0 )
return -1 ;
reindex.sort.cmp = (S4CMP_FUNCTION *)u4memcmp ;
for( tag_on = 0, i = 1 ; ; i++ )
{
tag_on = (TAG4 *)l4next( &i4->tags, tag_on ) ;
if ( tag_on == 0 )
break ;
len = strlen( tag_on->alias ) ;
memset( tag_name, ' ', 10 ) ;
memcpy( tag_name, tag_on->alias, len ) ;
if ( sort4put( &reindex.sort, 2 * B4BLOCK_SIZE * i, tag_name, "" ) < 0)
return -1 ;
#ifdef S4DEBUG
reindex.key_count++ ;
#endif /* S4DEBUG */
}
if ( (rc = r4reindex_write_keys(&reindex)) != 0 )
{
r4reindex_free( &reindex ) ;
return rc ;
}
}
else
if ( reindex.n_tags > 1 ) /* should only be 1 tag in an .idx */
return e4( i4->code_base, e4index, E4_INFO_BDI ) ;
#endif /* S4FOX */
for( reindex.tag = 0 ;; )
{
reindex.tag = (TAG4 *) l4next(&i4->tags, reindex.tag) ;
if ( reindex.tag == 0 )
break ;
#ifdef S4FOX
reindex.n_blocks_used = 0 ;
#else /* S4MDX */
reindex.tag->header.version++ ;
#endif /* S4FOX */
rc = r4reindex_supply_keys( &reindex ) ;
if ( rc )
{
r4reindex_free( &reindex ) ;
return rc ;
}
rc = r4reindex_write_keys( &reindex ) ;
if ( rc )
{
r4reindex_free( &reindex ) ;
return rc ;
}
}
rc = r4reindex_tag_headers_write( &reindex ) ;
#ifdef S4FOX
/* now must fix the right node branches for all blocks by moving leftwards */
for( tag_on = 0 ; ; )
{
tag_on = (TAG4 *)l4next( &i4->tags, tag_on ) ;
if ( tag_on == 0 )
break ;
for( t4rl_bottom( tag_on ) ; tag_on->blocks.last_node ; t4up( tag_on ) )
{
block = t4block( tag_on ) ;
r_node = block->header.left_node ;
go_to = block->header.left_node ;
while ( go_to != -1 )
{
r_node = block->file_block ;
if ( block->changed )
if ( b4flush( block ) < 0 )
return -1 ;
if ( file4read_all( &tag_on->index->file, I4MULTIPLY*go_to, &block->header, B4BLOCK_SIZE) < 0 )
return -1 ;
#ifdef S4BYTE_SWAP
block->header.node_attribute = x4reverse_short( (void *)&block->header.node_attribute ) ;
block->header.n_keys = x4reverse_short( (void *)&block->header.n_keys ) ;
block->header.left_node = x4reverse_long( (void *)&block->header.left_node ) ;
block->header.right_node = x4reverse_long( (void *)&block->header.right_node ) ;
/* if block is a leaf */
if (block->header.node_attribute >= 2 )
{
block->node_hdr.free_space = x4reverse_short( (void *)&block->node_hdr.free_space ) ;
long_val = x4reverse_long( (void *)&block->node_hdr.rec_num_mask[0] ) ;
memcpy( (void *)&block->node_hdr.rec_num_mask[0], (void *)&long_val, sizeof(S4LONG) ) ;
}
else /* if block is a branch */
{
short_val = block->tag->header.key_len + sizeof(S4LONG) ;
/* position swap_ptr to end of first key expression */
swap_ptr = (char *) &block->node_hdr.free_space + block->tag->header.key_len ;
/* move through all B4KEY's to swap 'long's */
for ( i = 0 ; i < (int) block->header.n_keys ; i++ )
{
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += short_val ;
}
}
#endif
block->file_block = go_to ;
if ( block->header.right_node != r_node ) /* if a bad value */
{
block->header.right_node = r_node ;
block->changed = 1 ;
}
go_to = block->header.left_node ;
}
block->built_on = -1 ;
b4top( block ) ;
}
}
#endif /* S4FOX */
r4reindex_free( &reindex ) ;
#ifndef S4OPTIMIZE_OFF
if ( has_opt )
d4opt_restart( i4->code_base ) ;
#endif /* not S4OPTIMIZE_OFF */
return rc ;
}
int r4reindex_init( R4REINDEX *r4, INDEX4 *i4 )
{
memset( (void *)r4, 0, sizeof( R4REINDEX ) ) ;
r4->index = i4 ;
r4->data = i4->data ;
r4->code_base = i4->code_base ;
r4->min_keysmax = INT_MAX ;
r4->start_block = 0 ;
#ifndef S4FOX
r4->blocklen = i4->header.block_rw ;
#endif /* S4FOX */
r4->buffer_len = i4->code_base->mem_size_sort_buffer ;
if ( r4->buffer_len < 1024 )
r4->buffer_len = 1024 ;
r4->buffer = (char *)u4alloc_er( i4->code_base, r4->buffer_len ) ;
if ( r4->buffer == 0 )
return e4memory ;
#ifdef S4FOX
r4->lastblock = 1024 ; /* leave space for the index header block */
#endif /* S4FOX */
return 0 ;
}
void r4reindex_free( R4REINDEX *r4 )
{
u4free( r4->buffer ) ;
u4free( r4->start_block ) ;
sort4free( &r4->sort ) ;
}
int r4reindex_blocks_alloc( R4REINDEX *r4 )
{
long on_count ;
#ifdef S4DEBUG
if ( (unsigned) r4->min_keysmax > INT_MAX )
e4severe( e4info, E4_I4REINDEX_BA ) ;
#endif /* S4DEBUG */
/* Calculate the block stack height */
on_count = d4reccount( r4->data ) ;
for ( r4->n_blocks = 2; on_count != 0L; r4->n_blocks++ )
on_count /= r4->min_keysmax ;
if ( r4->start_block == 0 )
{
#ifdef S4FOX
r4->start_block = (R4BLOCK_DATA *)u4alloc_er( r4->code_base, (long)B4BLOCK_SIZE * r4->n_blocks ) ;
#endif /* S4FOX */
#ifdef S4MDX
r4->start_block = (R4BLOCK_DATA *)u4alloc_er( r4->code_base, (long)r4->blocklen * r4->n_blocks ) ;
#endif /* S4MDX */
}
if ( r4->start_block == 0 )
return e4memory ;
return 0 ;
}
int r4reindex_supply_keys( R4REINDEX *r4 )
{
FILE4SEQ_READ seq_read ;
EXPR4 *filter ;
char *key_result ;
int i, *filter_result ;
long count, i_rec ;
DATA4 *d4 ;
TAG4 *t4 ;
d4 = r4->data ;
t4 = r4->tag ;
#ifdef S4DEBUG
r4->key_count = 0L ;
#endif /* S4DEBUG */
file4seq_read_init( &seq_read, &d4->file, d4record_position(d4,1L), r4->buffer, r4->buffer_len) ;
if ( sort4init( &r4->sort, r4->code_base, t4->header.key_len, 0 ) < 0 )
return -1 ;
#ifdef S4FOX
r4->sort.cmp = (S4CMP_FUNCTION *)u4memcmp ;
#endif /* S4FOX */
#ifdef S4MDX
r4->sort.cmp = t4->cmp ;
#endif /* S4MDX */
filter = t4->filter ;
count = d4reccount( d4 ) ;
for ( i_rec = 1L; i_rec <= count; i_rec++ )
{
if ( file4seq_read_all( &seq_read, d4->record, d4->record_width ) < 0 )
return -1 ;
d4->rec_num = i_rec ;
#ifndef S4MEMO_OFF
for ( i = 0; i < d4->n_fields_memo; i++ )
f4memo_reset( d4->fields_memo[i].field ) ;
#endif /* S4MEMO_OFF */
if ( filter )
{
expr4vary( filter, (char **)&filter_result ) ;
#ifdef S4DEBUG
if ( expr4type( filter ) != r4log )
e4severe( e4result, E4_I4REINDEX_SK ) ;
#endif /* S4DEBUG */
if ( ! *filter_result )
continue ;
t4->has_keys = 1 ;
#ifdef S4MDX
t4->had_keys = 0 ;
#endif
}
t4expr_key( t4, &key_result ) ;
if ( sort4put( &r4->sort, i_rec, key_result, "" ) < 0)
return -1 ;
#ifdef S4DEBUG
r4->key_count++ ;
#endif /* S4DEBUG */
}
return 0 ;
}
int r4reindex_tag_headers_calc( R4REINDEX *r4 )
{
TAG4 *tag ;
#ifdef S4FOX
int keysmax, expr_type ;
#endif /* S4FOX */
r4->n_tags = 0 ;
for( tag = 0 ;; )
{
tag = (TAG4 *) l4next( &r4->index->tags, tag ) ;
if ( tag == 0 )
break ;
if ( t4free_all(tag) < 0 )
return -1 ;
tag->header.key_len = (short) expr4key_len( tag->expr ) ;
#ifdef S4FOX
expr_type = expr4type( tag->expr ) ;
if ( expr_type < 0 )
return -1 ;
t4init_seek_conv( tag, expr_type ) ;
if ( tag->header.key_len < 0 )
return -1 ;
keysmax = ( B4BLOCK_SIZE - sizeof(B4STD_HEADER) ) / ( tag->header.key_len + 2*sizeof(long) ) ;
if ( keysmax < r4->min_keysmax )
r4->min_keysmax = keysmax ;
#endif /* S4FOX */
#ifdef S4MDX
if ( tag->header.key_len < 0 )
return -1 ;
tag->header.type = (char) expr4type( tag->expr ) ;
if ( tag->header.type == r4date_doub )
tag->header.type = r4date ;
if ( tag->header.type == r4num_doub )
tag->header.type = r4num ;
t4init_seek_conv( tag, tag->header.type ) ;
tag->header.group_len = (short)(tag->header.key_len+ 2*sizeof(S4LONG)-1) ;
tag->header.group_len-= (short)(tag->header.group_len % sizeof(S4LONG)) ;
tag->header.keys_max = (short)((r4->index->header.block_rw - sizeof(short)
- 6 - sizeof(S4LONG)) / tag->header.group_len) ;
if ( tag->header.keys_max < r4->min_keysmax )
r4->min_keysmax = tag->header.keys_max ;
tag->has_keys = 0 ;
tag->had_keys = 1 ;
#endif /* S4MDX */
r4->n_tags++ ;
}
#ifdef S4FOX
if ( r4->index->tag_index->header.type_code >= 64 )
{
r4->lastblock += ((long)r4->n_tags-1)*2*B4BLOCK_SIZE + B4BLOCK_SIZE ;
t4init_seek_conv( r4->index->tag_index, r4str ) ;
}
else
r4->lastblock -= B4BLOCK_SIZE ;
#endif /* S4FOX */
#ifdef S4MDX
r4->lastblock_inc = r4->index->header.block_rw/ 512 ;
r4->lastblock = 4 + (r4->n_tags-1)*r4->lastblock_inc ;
#endif /* S4MDX */
return 0 ;
}
TAG4 *r4reindex_find_i_tag( R4REINDEX *r4, int i_tag )
{
/* First 'i_tag' starts at '1' for this specific routine */
TAG4 *tag_on ;
tag_on = (TAG4 *) l4first( &r4->index->tags ) ;
while ( --i_tag >= 1 )
{
tag_on = (TAG4 *) l4next( &r4->index->tags, tag_on ) ;
if ( tag_on == 0 )
return 0 ;
}
return tag_on ;
}
#ifdef S4MDX
#define GARBAGE_LEN 518
int r4reindex_tag_headers_write( R4REINDEX *r4 )
{
/* First, calculate the T4DESC.left_chld, T4DESC.right_chld values, T4DESC.parent values */
int higher[49], lower[49], parent[49] ;
TAG4 *tag_on, *tag_ptr ;
INDEX4 *i4 ;
DATA4 *d4 ;
int n_tag, i_tag, j_field, len, save_code ;
T4DESC tag_info ;
char *ptr ;
#ifdef S4BYTE_SWAP
I4HEADER swap_header ;
T4HEADER swap_tag_header ;
#endif /* S4BYTE_SWAP */
memset( (void *)higher, 0, sizeof(higher) ) ;
memset( (void *)lower, 0, sizeof(lower) ) ;
memset( (void *)parent, 0, sizeof(parent) ) ;
i4 = r4->index ;
d4 = r4->data ;
tag_on = (TAG4 *) l4first( &i4->tags ) ;
if ( tag_on != 0 )
{
n_tag = 1 ;
for ( ;; )
{
tag_on = (TAG4 *)l4next( &i4->tags, tag_on) ;
if ( tag_on == 0 )
break ;
n_tag++ ;
i_tag = 1 ;
for (;;)
{
tag_ptr = r4reindex_find_i_tag( r4, i_tag ) ;
#ifdef S4DEBUG
if ( tag_ptr == 0 || i_tag < 0 || i_tag >= 48 || n_tag > 48 )
e4severe( e4result, E4_I4REINDEX_THW ) ;
#endif /* S4DEBUG */
if ( u4memcmp( tag_on->alias, tag_ptr->alias, sizeof(tag_on->alias)) < 0)
{
if ( lower[i_tag] == 0 )
{
lower[i_tag] = n_tag ;
parent[n_tag] = i_tag ;
break ;
}
else
i_tag = lower[i_tag] ;
}
else
{
if ( higher[i_tag] == 0 )
{
higher[i_tag] = n_tag ;
parent[n_tag] = i_tag ;
break ;
}
else
i_tag = higher[i_tag] ;
}
}
}
}
/* Now write the headers */
file4seq_write_init( &r4->seqwrite, &i4->file, 0L, r4->buffer, r4->buffer_len ) ;
i4->header.eof = r4->lastblock + r4->lastblock_inc ;
i4->header.free_list = 0L ;
u4yymmdd( i4->header.yymmdd ) ;
#ifdef S4BYTE_SWAP
memcpy( (void *)&swap_header, (void *)&i4->header, sizeof(I4HEADER) ) ;
swap_header.block_chunks = x4reverse_short( (void *)&swap_header.block_chunks ) ;
swap_header.block_rw = x4reverse_short( (void *)&swap_header.block_rw ) ;
swap_header.slot_size = x4reverse_short( (void *)&swap_header.slot_size ) ;
swap_header.num_tags = x4reverse_short( (void *)&swap_header.num_tags ) ;
swap_header.eof = x4reverse_long( (void *)&swap_header.eof ) ;
swap_header.free_list = x4reverse_long( (void *)&swap_header.free_list ) ;
file4seq_write( &r4->seqwrite, &swap_header, sizeof(I4HEADER) ) ;
#else
file4seq_write( &r4->seqwrite, &i4->header, sizeof(I4HEADER) ) ;
#endif /* S4BYTE_SWAP */
file4seq_write_repeat( &r4->seqwrite, 512-sizeof(I4HEADER)+17, 0 ) ;
/* There is a 0x01 on byte 17 of the first 32 bytes. */
file4seq_write( &r4->seqwrite, "\001", 1 ) ;
file4seq_write_repeat( &r4->seqwrite, 14, 0 ) ;
tag_on = (TAG4 *) l4first( &i4->tags ) ;
for ( i_tag = 0; i_tag < 47; i_tag++ )
{
memset( (void *)&tag_info, 0, sizeof(tag_info) ) ;
if ( i_tag < r4->n_tags )
{
tag_info.header_pos = 4 + (long) i_tag * r4->lastblock_inc ;
tag_on->header_offset = tag_info.header_pos * 512 ;
memcpy( (void *)tag_info.tag, tag_on->alias, sizeof(tag_info.tag) ) ;
tag_info.index_type = tag_on->header.type ;
#ifdef S4BYTE_SWAP
tag_info.header_pos = x4reverse_long( (void *)&tag_info.header_pos ) ;
tag_info.x1000 = 0x0010 ;
#else
tag_info.x1000 = 0x1000 ;
#endif /* S4BYTE_SWAP */
tag_info.x2 = 2 ;
tag_info.left_chld = (char) lower[i_tag+1] ;
tag_info.right_chld = (char) higher[i_tag+1] ;
tag_info.parent = (char) parent[i_tag+1] ;
if ( i4->header.is_production )
{
save_code = i4->code_base->field_name_error ;
i4->code_base->field_name_error = 0 ;
j_field = d4field_number( d4, tag_on->expr->source ) ;
i4->code_base->field_name_error = save_code ;
if ( j_field > 0 )
file4write( &d4->file, (j_field+1)*sizeof(FIELD4IMAGE)-1, "\001", 1 ) ;
}
tag_on = (TAG4 *) l4next( &i4->tags, tag_on ) ;
}
if ( file4seq_write( &r4->seqwrite, &tag_info, sizeof(T4DESC)) < 0 )
return -1 ;
}
for (tag_on = 0 ;; )
{
tag_on = (TAG4 *)l4next( &i4->tags, tag_on ) ;
if ( tag_on == 0 )
break ;
#ifdef S4BYTE_SWAP
memcpy( (void *)&swap_tag_header, (void *)&tag_on->header, sizeof(T4HEADER) ) ;
swap_tag_header.root = x4reverse_long( (void *)&swap_tag_header.root ) ;
swap_tag_header.key_len = x4reverse_short( (void *)&swap_tag_header.key_len ) ;
swap_tag_header.keys_max = x4reverse_short( (void *)&swap_tag_header.keys_max ) ;
swap_tag_header.group_len = x4reverse_short( (void *)&swap_tag_header.group_len ) ;
swap_tag_header.unique = x4reverse_short( (void *)&swap_tag_header.unique ) ;
if ( file4seq_write( &r4->seqwrite, &swap_tag_header, sizeof(T4HEADER)) < 0 )
return -1 ;
#else
if ( file4seq_write( &r4->seqwrite, &tag_on->header, sizeof(T4HEADER)) < 0 )
return -1 ;
#endif /* S4BYTE_SWAP */
ptr = tag_on->expr->source ;
len = strlen(ptr) ;
file4seq_write( &r4->seqwrite, ptr, len) ;
file4seq_write_repeat( &r4->seqwrite, 221-len, 0 ) ;
if( tag_on->filter != 0 )
{
file4seq_write_repeat( &r4->seqwrite, 1, 1 ) ;
if (tag_on->has_keys)
file4seq_write_repeat( &r4->seqwrite, 1, 1 ) ;
else
file4seq_write_repeat( &r4->seqwrite, 1, 0 ) ;
}
else
file4seq_write_repeat( &r4->seqwrite, 2, 0 ) ;
/* write extra space up to filter write point */
file4seq_write_repeat( &r4->seqwrite, GARBAGE_LEN-3 , 0 ) ;
if ( tag_on->filter == 0 )
len = 0 ;
else
{
ptr = tag_on->filter->source ;
len = strlen(ptr) ;
file4seq_write( &r4->seqwrite, ptr, len ) ;
}
file4seq_write_repeat( &r4->seqwrite,
r4->blocklen - GARBAGE_LEN - len - 220 - sizeof(tag_on->header), 0 );
}
file4len_set( &i4->file, i4->header.eof * 512) ;
if ( file4seq_write_flush(&r4->seqwrite) < 0 )
return -1 ;
return 0 ;
}
int r4reindex_write_keys( R4REINDEX *r4 )
{
TAG4 *t4 ;
char last_key[I4MAX_KEY_SIZE], *key_data ;
int is_unique, rc, is_first ;
void *dummy_ptr ;
long key_rec ;
t4 = r4->tag ;
r4->grouplen = t4->header.group_len ;
r4->valuelen = t4->header.key_len ;
r4->keysmax = t4->header.keys_max ;
memset( (void *)r4->start_block, 0, r4->n_blocks*r4->blocklen ) ;
if ( sort4get_init( &r4->sort ) < 0 )
return -1 ;
file4seq_write_init( &r4->seqwrite, &r4->index->file, (r4->lastblock+r4->lastblock_inc)*512, r4->buffer,r4->buffer_len) ;
#ifdef S4DEBUG
if ( I4MAX_KEY_SIZE < r4->sort.sort_len )
e4severe( e4info, E4_INFO_EXK ) ;
#endif /* S4DEBUG */
is_first = 1 ;
is_unique = t4->header.unique ;
for(;;) /* For each key to write */
{
rc = sort4get( &r4->sort, &key_rec, (void **) &key_data, &dummy_ptr) ;
if ( rc < 0 )
return -1 ;
#ifdef S4DEBUG
if ( r4->key_count < 0L || r4->key_count == 0L && rc != 1
|| r4->key_count > 0L && rc == 1 )
e4severe( e4info, E4_I4REINDEX_WK ) ;
r4->key_count-- ;
#endif /* S4DEBUG */
if ( rc == 1 ) /* No more keys */
{
if ( r4reindex_finish(r4) < 0 )
return -1 ;
if ( file4seq_write_flush(&r4->seqwrite) < 0 )
return -1 ;
break ;
}
if ( is_unique )
{
if( is_first )
is_first = 0 ;
else
if ( (*t4->cmp)( key_data, last_key, r4->sort.sort_len) == 0 )
{
switch( t4->unique_error )
{
case e4unique:
return e4describe( r4->code_base, e4unique, E4_UNIQUE, t4->alias, (char *) 0 ) ;
case r4unique:
return r4unique ;
default:
continue ;
}
}
memcpy( last_key, key_data, r4->sort.sort_len ) ;
}
/* Add the key */
if ( r4reindex_add( r4, key_rec, key_data) < 0 )
return -1 ;
}
/* Now complete the tag header info. */
t4->header.root = r4->lastblock ;
return 0 ;
}
int r4reindex_add( R4REINDEX *r4, long rec, char *key_value )
{
B4KEY_DATA *key_to ;
R4BLOCK_DATA *start_block ;
#ifdef S4DEBUG
long dif ;
#endif /* S4DEBUG */
start_block = r4->start_block ;
if ( start_block->n_keys >= r4->keysmax )
{
if ( r4reindex_todisk(r4) < 0 )
return -1 ;
memset( (void *)start_block, 0, r4->blocklen ) ;
}
key_to = (B4KEY_DATA *)
(start_block->info + (start_block->n_keys++) * r4->grouplen) ;
#ifdef S4DEBUG
dif = (char *) key_to - (char *) start_block ;
if ( ((unsigned)dif + r4->grouplen) > r4->blocklen || dif < 0 )
e4severe( e4result, E4_I4REINDEX_ADD ) ;
#endif /* S4DEBUG */
key_to->num = rec ;
memcpy( (void *)key_to->value, key_value, r4->valuelen ) ;
return 0 ;
}
int r4reindex_finish( R4REINDEX *r4 )
{
R4BLOCK_DATA *block ;
int i_block ;
B4KEY_DATA *key_to ;
#ifdef S4DEBUG
long dif ;
#endif /* S4DEBUG */
#ifdef S4BYTE_SWAP
char *swap, *swap_ptr ;
int i ;
S4LONG long_val ;
short short_val ;
swap = (char *) u4alloc_er( r4->code_base, r4->blocklen ) ;
if ( swap == 0 )
return -1 ;
memcpy( (void *)swap, (void *)r4->start_block, r4->blocklen ) ;
/* position swap_ptr at beginning of B4KEY's */
swap_ptr = swap ;
swap_ptr += 6 + sizeof(short) ;
/* move through all B4KEY's to swap 'long' */
for ( i = 0 ; i < (* (short *)swap) ; i++ )
{
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += r4->grouplen ;
}
/* swap the num_keys value */
short_val = x4reverse_short( (void *)swap ) ;
memcpy( swap, (void *) &short_val, sizeof(short) ) ;
if ( file4seq_write(&r4->seqwrite, swap ,r4->blocklen) < 0 )
{
u4free( swap ) ;
return -1 ;
}
#else
if ( file4seq_write(&r4->seqwrite, r4->start_block, r4->blocklen) < 0 )
return -1 ;
#endif /* S4BYTE_SWAP */
r4->lastblock += r4->lastblock_inc ;
block = r4->start_block ;
for( i_block=1; i_block < r4->n_blocks; i_block++ )
{
block = (R4BLOCK_DATA *) ((char *)block + r4->blocklen) ;
if ( block->n_keys >= 1 )
{
key_to = (B4KEY_DATA *) (block->info + block->n_keys*r4->grouplen) ;
#ifdef S4DEBUG
dif = (char *) key_to - (char *) block ;
if ( ( (unsigned)dif + sizeof( long ) ) > r4->blocklen || dif < 0 )
e4severe( e4result, E4_I4REINDEX_FN ) ;
#endif /* S4DEBUG */
key_to->num = r4->lastblock ;
#ifdef S4BYTE_SWAP
memcpy( (void *)swap, (void *)block, r4->blocklen ) ;
/* position swap_ptr at beginning of B4KEY's */
swap_ptr = swap ;
swap_ptr += 6 + sizeof(short) ;
/* move through all B4KEY's to swap 'long' */
for ( i = 0 ; i < (*(short *)swap) ; i++ )
{
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += r4->grouplen ;
}
/* this is a branch */
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
/* swap the num_keys value */
short_val = x4reverse_short( (void *)swap ) ;
memcpy( swap, (void *) &short_val, sizeof(short) ) ;
if ( file4seq_write( &r4->seqwrite, swap, r4->blocklen) < 0)
{
u4free( swap ) ;
return -1 ;
}
#else
if ( file4seq_write( &r4->seqwrite, block, r4->blocklen) < 0 )
return -1;
#endif /* S4BYTE_SWAP */
r4->lastblock += r4->lastblock_inc ;
}
}
#ifdef S4BYTE_SWAP
u4free( swap ) ;
#endif /* S4BYTE_SWAP */
return 0 ;
}
int r4reindex_todisk( R4REINDEX *r4 )
{
R4BLOCK_DATA *block ;
int i_block ;
B4KEY_DATA *key_on, *keyto ;
#ifdef S4DEBUG
long dif ;
#endif /* S4DEBUG */
#ifdef S4BYTE_SWAP
char *swap, *swap_ptr ;
int i ;
S4LONG long_val ;
short short_val ;
#endif /* S4BYTE_SWAP */
/* Writes out the current block and adds references to higher blocks */
block = r4->start_block ;
i_block= 0 ;
key_on = (B4KEY_DATA *) (block->info + (block->n_keys-1) * r4->grouplen) ;
#ifdef S4DEBUG
dif = (char *) key_on - (char *) block ;
if ( ( (unsigned)dif + r4->grouplen ) > r4->blocklen || dif < 0 )
e4severe( e4result, E4_I4REINDEX_TD ) ;
#endif /* S4DEBUG */
for(;;)
{
#ifdef S4BYTE_SWAP
swap = (char *) u4alloc_er( r4->code_base, r4->blocklen + sizeof(S4LONG) ) ;
if ( swap == 0 )
return -1 ;
memcpy( (void *)swap, (void *)block, r4->blocklen ) ;
/* position swap_ptr at beginning of B4KEY's */
swap_ptr = swap ;
swap_ptr += 6 + sizeof(short) ;
/* move through all B4KEY's to swap 'long' */
for ( i = 0 ; i < (*(short *)swap) ; i++ )
{
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += r4->grouplen ;
}
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
/* swap the num_keys value */
short_val = x4reverse_short( (void *)swap ) ;
memcpy( swap, (void *) &short_val, sizeof(short) ) ;
i = file4seq_write( &r4->seqwrite, swap, r4->blocklen) ;
u4free( swap ) ;
if ( i < 0 )
return -1 ;
#else
if ( file4seq_write( &r4->seqwrite, block, r4->blocklen) < 0 )
return -1 ;
#endif /* S4BYTE_SWAP */
if ( i_block )
memset( (void *)block, 0, r4->blocklen ) ;
r4->lastblock += r4->lastblock_inc ;
block = (R4BLOCK_DATA *) ((char *)block + r4->blocklen) ;
i_block++ ;
#ifdef S4DEBUG
if ( i_block >= r4->n_blocks )
e4severe( e4info, E4_I4REINDEX_TD ) ;
#endif /* S4DEBUG */
keyto = (B4KEY_DATA *) (block->info + block->n_keys * r4->grouplen) ;
#ifdef S4DEBUG
dif = (char *) keyto - (char *) block ;
if ( ( (unsigned)dif + sizeof( long ) ) > r4->blocklen || dif < 0 )
e4severe( e4result, E4_I4REINDEX_TD ) ;
#endif /* S4DEBUG */
keyto->num = r4->lastblock ;
if ( block->n_keys < r4->keysmax )
{
block->n_keys++ ;
#ifdef S4DEBUG
if ( ((unsigned)dif+r4->grouplen) > r4->blocklen )
e4severe( e4result, E4_I4REINDEX_TD ) ;
#endif /* S4DEBUG */
memcpy( keyto->value, key_on->value, r4->valuelen ) ;
return 0 ;
}
}
}
#endif /* ifdef S4MDX */
#ifdef S4FOX
int r4reindex_tag_headers_write( R4REINDEX *r4 )
{
TAG4 *tag_on ;
INDEX4 *i4 ;
int tot_len, expr_hdr_len ;
int i_tag = 2 ;
char *ptr ;
#ifdef S4BYTE_SWAP
T4HEADER swap_tag_header ;
#endif
i4 = r4->index ;
/* Now write the headers */
file4seq_write_init( &r4->seqwrite, &i4->file, 0L, r4->buffer, r4->buffer_len ) ;
i4->tag_index->header.free_list = 0L ;
expr_hdr_len = 5*sizeof(short) ;
i4->eof = r4->lastblock + B4BLOCK_SIZE ;
if ( i4->tag_index->header.type_code >= 64 )
{
#ifdef S4BYTE_SWAP
memcpy( (void *)&swap_tag_header, (void *)&i4->tag_index->header, sizeof(T4HEADER) ) ;
swap_tag_header.root = x4reverse_long( (void *)&swap_tag_header.root ) ;
swap_tag_header.free_list = x4reverse_long( (void *)&swap_tag_header.free_list ) ;
swap_tag_header.version = x4reverse_long( (void *)&swap_tag_header.version ) ;
swap_tag_header.key_len = x4reverse_short( (void *)&swap_tag_header.key_len ) ;
swap_tag_header.descending = x4reverse_short( (void *)&swap_tag_header.descending ) ;
swap_tag_header.filter_pos = x4reverse_short( (void *)&swap_tag_header.filter_pos ) ;
swap_tag_header.filter_len = x4reverse_short( (void *)&swap_tag_header.filter_len ) ;
swap_tag_header.expr_pos = x4reverse_short( (void *)&swap_tag_header.expr_pos ) ;
swap_tag_header.expr_len = x4reverse_short( (void *)&swap_tag_header.expr_len ) ;
file4seq_write( &r4->seqwrite, &swap_tag_header, T4HEADER_WR_LEN ) ; /* write first header part */
#else
file4seq_write( &r4->seqwrite, &i4->tag_index->header, T4HEADER_WR_LEN ) ; /* write first header part */
#endif
file4seq_write_repeat( &r4->seqwrite, 486, 0 ) ;
#ifdef S4BYTE_SWAP
file4seq_write( &r4->seqwrite, &swap_tag_header.descending, expr_hdr_len ) ;
#else
file4seq_write( &r4->seqwrite, &i4->tag_index->header.descending, expr_hdr_len ) ;
#endif
file4seq_write_repeat( &r4->seqwrite, 512, 0 ) ; /* no expression */
}
for ( tag_on = 0 ;; )
{
tag_on = (TAG4 *)l4next( &i4->tags, tag_on ) ;
if ( tag_on == 0 )
break ;
if ( i4->tag_index->header.type_code >= 64 )
tag_on->header_offset = ((long)i_tag) * B4BLOCK_SIZE ;
else
tag_on->header_offset = 0L ;
#ifdef S4BYTE_SWAP
memcpy( (void *)&swap_tag_header, (void *)&tag_on->header, sizeof(T4HEADER) ) ;
swap_tag_header.root = x4reverse_long( (void *)&swap_tag_header.root ) ;
swap_tag_header.free_list = x4reverse_long( (void *)&swap_tag_header.free_list ) ;
swap_tag_header.version = x4reverse_long( (void *)&swap_tag_header.version ) ;
swap_tag_header.key_len = x4reverse_short( (void *)&swap_tag_header.key_len ) ;
swap_tag_header.descending = x4reverse_short( (void *)&swap_tag_header.descending ) ;
swap_tag_header.filter_pos = x4reverse_short( (void *)&swap_tag_header.filter_pos ) ;
swap_tag_header.filter_len = x4reverse_short( (void *)&swap_tag_header.filter_len ) ;
swap_tag_header.expr_pos = x4reverse_short( (void *)&swap_tag_header.expr_pos ) ;
swap_tag_header.expr_len = x4reverse_short( (void *)&swap_tag_header.expr_len ) ;
if ( file4seq_write( &r4->seqwrite, &swap_tag_header, T4HEADER_WR_LEN) < 0 )
return -1 ;
#else
if ( file4seq_write( &r4->seqwrite, &tag_on->header, T4HEADER_WR_LEN) < 0 )
return -1 ;
#endif
file4seq_write_repeat( &r4->seqwrite, 486, 0 ) ;
#ifdef S4BYTE_SWAP
file4seq_write( &r4->seqwrite, &swap_tag_header.descending, expr_hdr_len ) ;
#else
file4seq_write( &r4->seqwrite, &tag_on->header.descending, expr_hdr_len ) ;
#endif
ptr = tag_on->expr->source ;
tot_len = tag_on->header.expr_len ;
file4seq_write( &r4->seqwrite, ptr, tag_on->header.expr_len ) ;
if ( tag_on->filter != 0 )
{
ptr = tag_on->filter->source ;
file4seq_write( &r4->seqwrite, ptr, tag_on->header.filter_len ) ;
tot_len += tag_on->header.filter_len ;
}
file4seq_write_repeat( &r4->seqwrite, B4BLOCK_SIZE - tot_len, 0 );
i_tag += 2 ;
}
file4len_set( &i4->file, i4->eof ) ;
if ( file4seq_write_flush(&r4->seqwrite) < 0 )
return -1 ;
return 0 ;
}
int r4reindex_write_keys( R4REINDEX *r4 )
{
char last_key[I4MAX_KEY_SIZE], *key_data ;
int is_unique, rc, c_len, t_len, last_trail ;
int on_count, is_first ;
unsigned int k_len ;
void *dummy_ptr ;
long key_rec ;
TAG4 *t4 ;
unsigned long ff, r_len ;
R4BLOCK_DATA *r4block ;
t4 = r4->tag ;
k_len = t4->header.key_len ;
ff = 0xFFFFFFFF ;
is_first = 1 ;
memset( last_key, r4->tag->p_char, k_len ) ;
for ( c_len = 0 ; k_len ; k_len >>= 1, c_len++ ) ;
k_len = t4->header.key_len ; /* reset the key length */
r4->node_hdr.trail_cnt_len = r4->node_hdr.dup_cnt_len = (unsigned char)c_len ;
r4->node_hdr.trail_byte_cnt = (unsigned char)(0xFF >> ( 8 - ((c_len / 8) * 8 + c_len % 8))) ;
r4->node_hdr.dup_byte_cnt = r4->node_hdr.trail_byte_cnt ;
r_len = d4reccount( r4->data ) ;
for ( c_len = 0 ; r_len ; r_len>>=1, c_len++ ) ;
r4->node_hdr.rec_num_len = (unsigned char) c_len ;
if ( r4->node_hdr.rec_num_len < 12 )
r4->node_hdr.rec_num_len = 12 ;
for( t_len = r4->node_hdr.rec_num_len + r4->node_hdr.trail_cnt_len + r4->node_hdr.dup_cnt_len ;
(t_len / 8)*8 != t_len ; t_len++, r4->node_hdr.rec_num_len++ ) ; /* make at an 8-bit offset */
r_len = ff >> ( sizeof(long)*8 - r4->node_hdr.rec_num_len ) ;
memcpy( (void *)&r4->node_hdr.rec_num_mask[0], (void *)&r_len, sizeof(long) ) ;
r4->node_hdr.info_len = (unsigned char)((unsigned int)(r4->node_hdr.rec_num_len + r4->node_hdr.trail_cnt_len + r4->node_hdr.dup_cnt_len) / 8) ;
r4->valuelen = t4->header.key_len ;
r4->grouplen = t4->header.key_len + 2*sizeof(long) ;
memset( (void *)r4->start_block, 0, r4->n_blocks * B4BLOCK_SIZE ) ;
#ifdef S4FOX
for ( r4block = r4->start_block, on_count = 0 ; on_count < r4->n_blocks;
r4block = (R4BLOCK_DATA *) ( (char *)r4block + B4BLOCK_SIZE), on_count++ )
{
memset( (void *)r4block, 0, B4BLOCK_SIZE ) ;
r4block->header.left_node = -1 ;
r4block->header.right_node = -1 ;
}
#endif /* S4FOX */
r4->node_hdr.free_space = B4BLOCK_SIZE - sizeof( B4STD_HEADER ) - sizeof( B4NODE_HEADER ) ;
r4->keysmax = (B4BLOCK_SIZE - sizeof( B4STD_HEADER ) ) / r4->grouplen ;
#ifdef S4DEBUG
if ( r4->node_hdr.free_space <= 0 || r4->keysmax <= 0 )
e4severe( e4info, E4_I4REINDEX_WK ) ;
#endif
if ( sort4get_init( &r4->sort ) < 0 )
return -1 ;
file4seq_write_init( &r4->seqwrite, &r4->index->file, r4->lastblock+B4BLOCK_SIZE, r4->buffer,r4->buffer_len) ;
#ifdef S4DEBUG
if ( I4MAX_KEY_SIZE < r4->sort.sort_len )
e4severe( e4info, E4_I4REINDEX_WK ) ;
#endif /* S4DEBUG */
last_trail = k_len ; /* default is no available duplicates */
is_unique = t4->header.type_code & 0x01 ;
for(;;) /* For each key to write */
{
if ( (rc = sort4get( &r4->sort, &key_rec, (void **) &key_data, &dummy_ptr)) < 0 )
return -1 ;
#ifdef S4DEBUG
if ( r4->key_count < 0L || r4->key_count == 0L && rc != 1 || r4->key_count > 0L && rc == 1 )
e4severe( e4info, E4_I4REINDEX_WK ) ;
r4->key_count-- ;
#endif /* S4DEBUG */
if ( rc == 1 ) /* No more keys */
{
if ( r4reindex_finish(r4, last_key ) < 0 )
return -1 ;
if ( file4seq_write_flush(&r4->seqwrite) < 0 )
return -1 ;
break ;
}
if ( is_unique )
{
if( is_first )
is_first = 0 ;
else
if ( (u4memcmp)( key_data, last_key, r4->sort.sort_len) == 0 )
{
switch( t4->unique_error )
{
case e4unique:
return e4describe( r4->code_base, e4unique, E4_UNIQUE, t4->alias, (char *) 0 ) ;
case r4unique:
return r4unique ;
default:
continue ;
}
}
}
/* Add the key */
if ( r4reindex_add( r4, key_rec, key_data, last_key, &last_trail ) < 0 )
return -1 ;
memcpy( last_key, key_data, r4->sort.sort_len ) ;
}
/* Now complete the tag header info. */
t4->header.root = r4->lastblock ;
return 0 ;
}
/* for compact leaf nodes only */
int r4reindex_add( R4REINDEX *r4, long rec, char *key_value, char *last_key, int *last_trail )
{
R4BLOCK_DATA *start_block ;
int dup_cnt, trail, k_len, i_len, len ;
unsigned char buffer[6] ;
char *info_pos ;
start_block = r4->start_block ;
k_len = r4->valuelen ;
i_len = r4->node_hdr.info_len ;
if ( start_block->header.n_keys == 0 ) /* reset */
{
dup_cnt = 0 ;
r4->cur_pos = ((char *)start_block) + B4BLOCK_SIZE ;
memcpy( ((char *)start_block) + sizeof( B4STD_HEADER ), (void *)&r4->node_hdr, sizeof( B4NODE_HEADER ) ) ;
start_block->header.node_attribute |= 2 ; /* leaf block */
*last_trail = k_len ;
}
else
dup_cnt = b4calc_dups( key_value, last_key, k_len ) ;
if ( dup_cnt > k_len - *last_trail ) /* don't allow duplicating trail bytes */
dup_cnt = k_len - *last_trail ;
if ( dup_cnt == k_len ) /* duplicate key */
trail = 0 ;
else
trail = b4calc_blanks( key_value, k_len, r4->tag->p_char ) ;
*last_trail = trail ;
if ( dup_cnt > k_len - *last_trail ) /* watch for case where < ' ' exissts */
dup_cnt = k_len - *last_trail ;
len = k_len - dup_cnt - trail ;
if ( r4->node_hdr.free_space < i_len + len )
{
if ( r4reindex_todisk(r4, last_key) < 0 )
return -1 ;
r4->node_hdr.free_space = B4BLOCK_SIZE - sizeof( B4STD_HEADER ) - sizeof( B4NODE_HEADER ) ;
dup_cnt = 0 ;
r4->cur_pos = ((char *)start_block) + B4BLOCK_SIZE ;
memcpy( ((char *)&start_block->header) + sizeof( B4STD_HEADER ), (void *)&r4->node_hdr, sizeof( B4NODE_HEADER ) ) ;
start_block->header.node_attribute |= 2 ; /* leaf block */
trail = b4calc_blanks( key_value, k_len, r4->tag->p_char ) ;
len = k_len - trail ;
}
r4->cur_pos -= len ;
memcpy( r4->cur_pos, key_value + dup_cnt, len ) ;
info_pos = ((char *)&start_block->header) + sizeof(B4STD_HEADER) +
sizeof(B4NODE_HEADER) + start_block->header.n_keys*i_len ;
x4put_info( &r4->node_hdr, buffer, rec, trail, dup_cnt ) ;
memcpy( info_pos, (void *)buffer, i_len ) ;
r4->node_hdr.free_space -= (unsigned char) ( len + i_len ) ;
start_block->header.n_keys++ ;
return 0 ;
}
int r4reindex_finish( R4REINDEX *r4, char *key_value )
{
R4BLOCK_DATA *block ;
int i_block ;
long rev_lb ;
char *keyto ;
long l_recno ;
#ifdef S4UNIX
long long_temp ;
#endif
#ifdef S4BYTE_SWAP
char swap[B4BLOCK_SIZE] ;
char *swap_ptr ;
int i ;
S4LONG long_val ;
short short_val ;
#endif
block = r4->start_block ;
if ( r4->n_blocks_used <= 1 ) /* just output first block */
{
memcpy( ((char *)block) + sizeof( B4STD_HEADER ), (void *)&r4->node_hdr, sizeof( B4NODE_HEADER ) ) ;
block->header.node_attribute |= (short)3 ; /* leaf and root block */
#ifdef S4BYTE_SWAP
memcpy( (void *)swap, (void *)block, B4BLOCK_SIZE ) ;
/* position at either B4NODE_HEADER (leaf) or data (branch) */
swap_ptr = swap + 2 * sizeof( short) + 2 * sizeof(S4LONG) ;
/* if block is a leaf */
if (block->header.node_attribute >= 2 )
{
/* swap B4NODE_HEADER members */
short_val = x4reverse_short( (void *)swap_ptr ) ; /* free_space */
memcpy( swap_ptr, (void *) &short_val, sizeof(short) ) ;
swap_ptr += sizeof(short) ;
long_val = x4reverse_long( (void *)swap_ptr ) ; /* rec_num_mask */
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
}
else /* if block is a branch */
{
short_val = r4->tag->header.key_len + sizeof(S4LONG) ;
/* position swap_ptr to end of first key expression */
swap_ptr += r4->tag->header.key_len ;
/* move through all B4KEY's to swap 'long's */
for ( i = 0 ; i < (int)block->header.n_keys ; i++ )
{
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += short_val ;
}
}
/* reposition to B4STD_HEADER and swap members */
swap_ptr = swap ;
short_val = x4reverse_short( (void *)swap_ptr ) ; /* node_attribute */
memcpy( swap_ptr, (void *) &short_val, sizeof(short) ) ;
swap_ptr += sizeof(short) ;
short_val = x4reverse_short( (void *)swap_ptr ) ; /* n_keys */
memcpy( swap_ptr, (void *) &short_val, sizeof(short) ) ;
swap_ptr += sizeof(short) ;
long_val = x4reverse_long( (void *)swap_ptr ) ; /* left_node */
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
long_val = x4reverse_long( (void *)swap_ptr ) ; /* right_node */
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
if ( file4seq_write( &r4->seqwrite, swap,B4BLOCK_SIZE) < 0 )
return -1;
#else
if ( file4seq_write( &r4->seqwrite, block,B4BLOCK_SIZE) < 0 )
return -1;
#endif
r4->lastblock += B4BLOCK_SIZE ;
}
else
{
memcpy( (void *)&l_recno, (void *) (((char *) (&block->header)) + sizeof(B4STD_HEADER)
+ sizeof(B4NODE_HEADER) + (block->header.n_keys - 1) * r4->node_hdr.info_len), sizeof( long ) ) ;
#ifdef S4DO_BYTEORDER
l_recno = x4reverse_long( (void *)&l_recno ) ;
#endif
#ifdef S4UNIX
memcpy( (void *)&long_temp, (void *)&r4->node_hdr.rec_num_mask[0], sizeof(S4LONG) ) ;
l_recno &= long_temp ;
#else
l_recno &= *(long *)&r4->node_hdr.rec_num_mask[0] ;
#endif
if ( block->header.node_attribute >= 2 ) /* if leaf, record free_space */
memcpy( ((char *)block) + sizeof( B4STD_HEADER ), (void *)&r4->node_hdr, sizeof( B4NODE_HEADER ) ) ;
#ifdef S4BYTE_SWAP
memcpy( (void *)swap, (void *)r4->start_block, B4BLOCK_SIZE ) ;
/* position at either B4NODE_HEADER (leaf) or data (branch) */
swap_ptr = swap + 2 * sizeof( short) + 2 * sizeof(S4LONG) ;
/* if block is a leaf */
if (block->header.node_attribute >= 2 )
{
/* swap B4NODE_HEADER members */
short_val = x4reverse_short( (void *)swap_ptr ) ; /* free_space */
memcpy( swap_ptr, (void *) &short_val, sizeof(short) ) ;
swap_ptr += sizeof(short) ;
long_val = x4reverse_long( (void *)swap_ptr ) ; /* rec_num_mask */
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
}
else /* if block is a branch */
{
short_val = r4->tag->header.key_len + sizeof(S4LONG) ;
/* position swap_ptr to end of first key expression */
swap_ptr += r4->tag->header.key_len ;
/* move through all B4KEY's to swap 'long's */
for ( i = 0 ; i < (int) block->header.n_keys ; i++ )
{
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += short_val ;
}
}
/* reposition to B4STD_HEADER and swap members */
swap_ptr = swap ;
short_val = x4reverse_short( (void *)swap_ptr ) ; /* node_attribute */
memcpy( swap_ptr, (void *) &short_val, sizeof(short) ) ;
swap_ptr += sizeof(short) ;
short_val = x4reverse_short( (void *)swap_ptr ) ; /* n_keys */
memcpy( swap_ptr, (void *) &short_val, sizeof(short) ) ;
swap_ptr += sizeof(short) ;
long_val = x4reverse_long( (void *)swap_ptr ) ; /* left_node */
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
long_val = x4reverse_long( (void *)swap_ptr ) ; /* right_node */
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
if ( file4seq_write( &r4->seqwrite, swap,B4BLOCK_SIZE) < 0 )
return -1;
#else
if ( file4seq_write(&r4->seqwrite, r4->start_block,B4BLOCK_SIZE) < 0 )
return -1 ;
#endif
r4->lastblock += B4BLOCK_SIZE ;
l_recno = x4reverse_long( (void *)&l_recno ) ;
for( i_block=1; i_block < r4->n_blocks_used ; i_block++ )
{
block = (R4BLOCK_DATA *) ((char *)block + B4BLOCK_SIZE) ;
/* if ( block->header.n_keys >= 1 ) */
/* { */
keyto = ((char *) (&block->header)) + sizeof(B4STD_HEADER) + block->header.n_keys * r4->grouplen ;
block->header.n_keys++ ;
#ifdef S4DEBUG
if ( (char *) keyto - (char *) block + r4->grouplen > B4BLOCK_SIZE ||
(char *) keyto - (char *) block < 0 )
e4severe( e4result, E4_I4REINDEX_FN ) ;
#endif /* S4DEBUG */
memcpy( keyto, (void *)key_value, r4->valuelen ) ;
keyto += r4->valuelen ;
memcpy( keyto, (void *)&l_recno, sizeof( long ) ) ;
rev_lb = x4reverse_long( (void *)&r4->lastblock ) ;
memcpy( keyto + sizeof( long ), (void *)&rev_lb, sizeof( long ) ) ;
if ( i_block == r4->n_blocks_used - 1 )
block->header.node_attribute = 1 ; /* root block */
#ifdef S4BYTE_SWAP
memcpy( (void *)swap, (void *)block, B4BLOCK_SIZE ) ;
/* position at either B4NODE_HEADER (leaf) or data (branch) */
swap_ptr = swap + 2 * sizeof( short) + 2 * sizeof(S4LONG) ;
/* if block is a leaf */
if (block->header.node_attribute >= 2 )
{
/* swap B4NODE_HEADER members */
short_val = x4reverse_short( (void *)swap_ptr ) ; /* free_space */
memcpy( swap_ptr, (void *) &short_val, sizeof(short) ) ;
swap_ptr += sizeof(short) ;
long_val = x4reverse_long( (void *)swap_ptr ) ; /* rec_num_mask */
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
}
else /* if block is a branch */
{
short_val = r4->tag->header.key_len + sizeof(S4LONG) ;
/* position swap_ptr to end of first key expression */
swap_ptr += r4->tag->header.key_len ;
/* move through all B4KEY's to swap 'long's */
for ( i = 0 ; i < (int) block->header.n_keys ; i++ )
{
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += short_val ;
}
}
/* reposition to B4STD_HEADER and swap members */
swap_ptr = swap ;
short_val = x4reverse_short( (void *)swap_ptr ) ; /* node_attribute */
memcpy( swap_ptr, (void *) &short_val, sizeof(short) ) ;
swap_ptr += sizeof(short) ;
short_val = x4reverse_short( (void *)swap_ptr ) ; /* n_keys */
memcpy( swap_ptr, (void *) &short_val, sizeof(short) ) ;
swap_ptr += sizeof(short) ;
long_val = x4reverse_long( (void *)swap_ptr ) ; /* left_node */
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
long_val = x4reverse_long( (void *)swap_ptr ) ; /* right_node */
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
if ( file4seq_write( &r4->seqwrite, swap, B4BLOCK_SIZE) < 0)
return -1;
#else
if ( file4seq_write( &r4->seqwrite, block, B4BLOCK_SIZE) < 0)
return -1;
#endif
r4->lastblock += B4BLOCK_SIZE ;
/* } */
}
}
return 0 ;
}
/* Writes out the current block and adds references to higher blocks */
int r4reindex_todisk( R4REINDEX *r4, char* key_value )
{
R4BLOCK_DATA *block ;
long l_recno, rev_lb ;
int tn_used ;
char *keyto ;
#ifdef S4UNIX
long long_temp ;
#endif
#ifdef S4BYTE_SWAP
char swap[B4BLOCK_SIZE] ;
char *swap_ptr ;
int i ;
S4LONG long_val ;
short short_val ;
#endif
#ifdef S4DEBUG
int i_block = 0 ;
i_block = 0 ;
#endif
block = r4->start_block ;
tn_used = 1 ;
memcpy( (void *)&l_recno, ((unsigned char *) (&block->header)) + sizeof(B4STD_HEADER)
+ sizeof(B4NODE_HEADER) + (block->header.n_keys - 1) * r4->node_hdr.info_len, sizeof( long ) ) ;
#ifdef S4DO_BYTEORDER
l_recno = x4reverse_long( (void *)&l_recno ) ;
#endif
#ifdef S4UNIX
memcpy( (void *)&long_temp, (void *)&r4->node_hdr.rec_num_mask[0], sizeof(S4LONG) ) ;
l_recno &= long_temp ;
#else
l_recno &= *(long *)&r4->node_hdr.rec_num_mask[0] ;
#endif
l_recno = x4reverse_long( (void *)&l_recno ) ;
for(;;)
{
tn_used++ ;
r4->lastblock += B4BLOCK_SIZE ;
/* next line only works when on leaf branches... */
block->header.right_node = r4->lastblock + B4BLOCK_SIZE ;
if ( block->header.node_attribute >= 2 ) /* if leaf, record free_space */
memcpy( ((char *)block) + sizeof( B4STD_HEADER ), (void *)&r4->node_hdr.free_space, sizeof( r4->node_hdr.free_space ) ) ;
#ifdef S4BYTE_SWAP
memcpy( (void *)swap, (void *)block, B4BLOCK_SIZE ) ;
/* position at either B4NODE_HEADER (leaf) or data (branch) */
swap_ptr = swap + 2 * sizeof( short) + 2 * sizeof(S4LONG) ;
/* if block is a leaf */
if (r4->start_block->header.node_attribute >= 2 )
{
/* swap B4NODE_HEADER members */
short_val = x4reverse_short( (void *)swap_ptr ) ; /* free_space */
memcpy( swap_ptr, (void *) &short_val, sizeof(short) ) ;
swap_ptr += sizeof(short) ;
long_val = x4reverse_long( (void *)swap_ptr ) ; /* rec_num_mask */
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
}
else /* if block is a branch */
{
short_val = r4->tag->header.key_len + sizeof(S4LONG) ;
/* position swap_ptr to end of first key expression */
swap_ptr += r4->tag->header.key_len ;
/* move through all B4KEY's to swap 'long's */
for ( i = 0 ; i < (int) block->header.n_keys ; i++ )
{
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
long_val = x4reverse_long( (void *)swap_ptr ) ;
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += short_val ;
}
}
/* reposition to B4STD_HEADER and swap members */
swap_ptr = swap ;
short_val = x4reverse_short( (void *)swap_ptr ) ; /* node_attribute */
memcpy( swap_ptr, (void *) &short_val, sizeof(short) ) ;
swap_ptr += sizeof(short) ;
short_val = x4reverse_short( (void *)swap_ptr ) ; /* n_keys */
memcpy( swap_ptr, (void *) &short_val, sizeof(short) ) ;
swap_ptr += sizeof(short) ;
long_val = x4reverse_long( (void *)swap_ptr ) ; /* left_node */
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
long_val = x4reverse_long( (void *)swap_ptr ) ; /* right_node */
memcpy( swap_ptr, (void *) &long_val, sizeof(S4LONG) ) ;
swap_ptr += sizeof(S4LONG) ;
if ( file4seq_write( &r4->seqwrite, swap, B4BLOCK_SIZE) < 0)
return -1;
#else
if ( file4seq_write( &r4->seqwrite, block, B4BLOCK_SIZE) < 0 )
return -1 ;
#endif
memset( (void *)block, 0, B4BLOCK_SIZE ) ;
block->header.left_node = r4->lastblock ;
block->header.right_node = -1 ;
block = (R4BLOCK_DATA *) ((char *)block + B4BLOCK_SIZE) ;
#ifdef S4DEBUG
i_block++ ;
if ( i_block >= r4->n_blocks )
e4severe( e4info, E4_I4REINDEX_TD ) ;
#endif /* S4DEBUG */
if ( block->header.n_keys < r4->keysmax )
{
keyto = ((char *) (&block->header)) + sizeof(B4STD_HEADER) + block->header.n_keys * r4->grouplen ;
block->header.n_keys++ ;
#ifdef S4DEBUG
if ( (char *) keyto - (char *) block + r4->grouplen > B4BLOCK_SIZE || (char *) keyto - (char *) block < 0 )
e4severe( e4result, E4_I4REINDEX_TD ) ;
#endif /* S4DEBUG */
memcpy( keyto, (void *)key_value, r4->valuelen ) ;
keyto += r4->valuelen ;
memcpy( keyto, (void *)&l_recno, sizeof( long ) ) ;
rev_lb = x4reverse_long( (void *)&r4->lastblock ) ;
memcpy( keyto + sizeof( long ), (void *)&rev_lb, sizeof( long ) ) ;
if ( block->header.n_keys < r4->keysmax ) /* then done, else do next one up */
{
if ( tn_used > r4->n_blocks_used )
r4->n_blocks_used = tn_used ;
return 0 ;
}
}
#ifdef S4DEBUG
else /* should never occur */
e4severe( e4result, E4_I4REINDEX_TD ) ;
#endif /* S4DEBUG */
}
}
#endif /* S4FOX */
#endif /* N4OTHER */
#endif /* S4INDEX_OFF */
#endif /* S4WRITE_OFF */