95 lines
2.5 KiB
C
95 lines
2.5 KiB
C
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/*
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===========================================================================
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Copyright (C) 2007 HermitWorks Entertainment Corporation
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This file is part of Space Trader source code.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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===========================================================================
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*/
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#include "../qcommon/q_shared.h"
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#include "../qcommon/qcommon.h"
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#include "sql.h"
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/*
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===============
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sql_alter_parse
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parses an alter statement.
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`ALTER TABLE <table> ADD <columns>;`
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===============
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*/
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stmtInfo_t * sql_alter_parse( sqlInfo_t * db, const char ** data_p )
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{
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const char * s = (char*)*data_p;
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tableInfo_t * table;
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char * n;
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// skip 'TABLE'
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parse_temp( &s );
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n = parse_temp( &s );
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table = find_table( db, n );
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if ( !table ) {
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Com_Error( ERR_FATAL, "table '%s' does not exist.", n );
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}
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n = parse_temp( &s );
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switch( SWITCHSTRING(n) )
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{
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case CS('a','d','d',0):
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{
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int count = table->column_count;
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sql_table_addcolumns( db, table, &s );
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// resize rows
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if ( table->row_count > 0 ) {
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int i;
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cellInfo_t * rows = sql_alloc( db, table->row_total * table->column_count * sizeof(cellInfo_t) );
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// copy rows into new table
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for ( i=0; i<table->row_count; i++ ) {
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memcpy( &rows[ i*table->column_count ], &table->rows[ i*count ], sizeof(cellInfo_t) * count );
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memset( &rows[ (i*table->column_count) + count ], 0, sizeof(cellInfo_t) * ( table->column_count-count ) );
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}
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sql_free( db, table->rows );
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table->rows = rows;
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}
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} break;
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}
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if ( table->sync ) {
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selectInfo_t * select = (selectInfo_t*)table->sync;
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if ( select->entire_row ) {
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int i;
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select->column_count = table->column_count;
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for ( i=0; i<table->column_count; i++ ) {
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select->column_type[ i ] = table->columns[ i ].format;
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select->column_name[ i ] = table->columns[ i ].name;
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}
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}
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}
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return 0;
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}
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