sql_dbcreator.c

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/*
 * This program is free software; you can redistribute it and/or
 * modify it under the terms of the GNU General Public License
 * as published by the Free Software Foundation; either version 2
 * of the License, or (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
 */

#include "common/setup_before.h"
#ifdef WITH_SQL
#include <stdio.h>

#ifdef STDC_HEADERS
# include <stdlib.h>
#else
# ifdef HAVE_MALLOC_H
#  include <malloc.h>
# endif
#endif

#ifdef HAVE_STRING_H
# include <string.h>
#else
# ifdef HAVE_STRINGS_H
#  include <strings.h>
# endif
#endif

#define  SQL_DBCREATOR_INTERNAL_ACCESS
#include "sql_dbcreator.h"
#undef   SQL_DBCREATOR_INTERNAL_ACCESS
#include "storage_sql.h"

#include "common/eventlog.h"
#include "common/util.h"

#include "compat/strdup.h"
#include "common/list.h"
#include "common/xalloc.h"
#include "common/xstr.h"
#include "prefs.h"
#include "common/setup_after.h"

t_elem  * curr_table  = NULL;
t_elem  * curr_column = NULL;
t_elem  * curr_cmd    = NULL;

t_db_layout * db_layout;

static void sql_escape_command(char *escape, const char *from, int len);

t_column * create_column(char * name, char * value, char * mode, char * extra_cmd)
{
  t_column * column;
  
  if (!(name))
    {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL column name");
      return NULL;
    }
  
  if (!(value))
    {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL column value");
      return NULL;
    }
  
  column = xmalloc(sizeof(t_column));
  column->name  = xstrdup(name);
  column->value = xstrdup(value);

  if (mode && extra_cmd)
  {
	  column->mode      = xstrdup(mode);
	  column->extra_cmd = xstrdup(extra_cmd);
  }
  else
  {
	  column->mode      = NULL;
	  column->extra_cmd = NULL;
  }

  return column;
};

void dispose_column(t_column * column)
{
  if (column)
    {
      if (column->name)      xfree((void *)column->name);
      if (column->value)     xfree((void *)column->value);
      if (column->mode)      xfree((void *)column->mode);
      if (column->extra_cmd) xfree((void *)column->extra_cmd);
      xfree((void *)column);
    }
}

t_sqlcommand * create_sqlcommand(char * sql_command, char * mode, char * extra_cmd)
{
  t_sqlcommand * sqlcommand;
  
  if (!(sql_command))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL sql_command");
    return NULL;
  }
  
  sqlcommand = xmalloc(sizeof(t_sqlcommand));
  sqlcommand->sql_command = xstrdup(sql_command);
  if (mode && extra_cmd)
  {
    sqlcommand->mode      = xstrdup(mode);
    sqlcommand->extra_cmd = xstrdup(extra_cmd);
  }
  else
  {
    sqlcommand->mode      = NULL;
    sqlcommand->extra_cmd = NULL;
  }

  return sqlcommand;
}

void dispose_sqlcommand(t_sqlcommand * sqlcommand)
{
  if (sqlcommand)
  {
    if (sqlcommand->sql_command) xfree((void *)sqlcommand->sql_command);
    if (sqlcommand->mode) xfree((void *)sqlcommand->mode);
    if (sqlcommand->extra_cmd) xfree((void *)sqlcommand->extra_cmd);
    xfree(sqlcommand);
  }
}

t_table * create_table(char * name)
{
  t_table * table;
  
  if (!(name))
    {
      eventlog(eventlog_level_error,__FUNCTION__,"got NULL table name");
      return NULL;
    }
  
  table = xmalloc(sizeof(t_table));
  table->name = xstrdup(name);

  table->columns = list_create();
  table->sql_commands = list_create();
  
  return table;
}

void dispose_table(t_table * table)
{
  t_elem * curr;
  t_column * column;
  t_sqlcommand * sql_command;
  
  if (table)
    {
      if (table->name) xfree((void *)table->name);
      // free list
      if (table->columns)
        {
          LIST_TRAVERSE(table->columns,curr)
	    {
	      if (!(column = elem_get_data(curr)))
		{
		  eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
		  continue;
		}
	      dispose_column(column);
	      list_remove_elem(table->columns,&curr);
	    }
	  
	  list_destroy(table->columns);
        }

      if (table->sql_commands)
        {
          LIST_TRAVERSE(table->sql_commands,curr)
	    {
	      if (!(sql_command = elem_get_data(curr)))
		{
		  eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
		  continue;
		}
	      dispose_sqlcommand(sql_command);
	      list_remove_elem(table->sql_commands,&curr);
	    }
	  
	  list_destroy(table->sql_commands);
        }
      
      
      xfree((void *)table);
    }
}

void table_add_column(t_table * table, t_column * column)
{
  if ((table) && (column))
    {
      list_append_data(table->columns,column);
    }
}

void table_add_sql_command(t_table * table, t_sqlcommand * sql_command)
{
  if ((table) && (sql_command))
    {
      list_append_data(table->sql_commands,sql_command);
    }
}

t_db_layout * create_db_layout()
{
  t_db_layout * db_layout;
  
  db_layout = xmalloc(sizeof(t_db_layout));

  db_layout->tables = list_create();
  
  return db_layout;
}

void dispose_db_layout(t_db_layout * db_layout)
{
  t_elem  * curr;
  t_table * table;
 

  if (db_layout)
    {
      if (db_layout->tables)
        {
          LIST_TRAVERSE(db_layout->tables,curr)
	    {
	      if (!(table = elem_get_data(curr)))
		{
		  eventlog(eventlog_level_error,__FUNCTION__,"found NULL entry in list");
		  continue;
		}
	      dispose_table(table);
	      list_remove_elem(db_layout->tables,&curr);
	    }
          list_destroy(db_layout->tables);
        }
      xfree((void *)db_layout);
    }
  
}

void db_layout_add_table(t_db_layout * db_layout, t_table * table)
{
  if ((db_layout) && (table))
    {
      list_append_data(db_layout->tables,table);
    }
}

t_table * db_layout_get_first_table(t_db_layout * db_layout)
{
  t_table * table;

  curr_column = NULL;

  if (!(db_layout))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL db_layout");
    return NULL;
  }

  if (!(db_layout->tables))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"found NULL db_layout->tables");
    return NULL;
  }

  if (!(curr_table = list_get_first(db_layout->tables)))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"db_layout has no tables");
    return NULL;
  }

  if (!(table = elem_get_data(curr_table)))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL elem in list");
    return NULL;
  }

  return table;
}

t_table * db_layout_get_next_table(t_db_layout * db_layout)
{
  t_table * table;

  curr_column = NULL;

  if (!(curr_table))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL curr_table");
    return NULL;
  }

  if (!(curr_table = elem_get_next(db_layout->tables, curr_table))) return NULL;

  if (!(table = elem_get_data(curr_table)))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL elem in list");
    return NULL;
  }

  return table;
}

t_column * table_get_first_column(t_table * table)
{
  t_column * column;

  if (!(table))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL table");
    return NULL;
  }

  if (!(table->columns))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL table->columns");
    return NULL;
  }

  if (!(curr_column = list_get_first(table->columns)))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"table has no columns");
    return NULL;
  }

  if (!(column = elem_get_data(curr_column)))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL elem in list");
    return NULL;
  }

  return column;
}

t_column * table_get_next_column(t_table * table)
{
  t_column * column;

  if (!(curr_column))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL curr_column");
    return NULL;
  }

  if (!(curr_column = elem_get_next(table->columns, curr_column))) return NULL;

  if (!(column = elem_get_data(curr_column)))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL elem in list");
    return NULL;
  }

  return column;
}

t_sqlcommand * table_get_first_sql_command(t_table * table)
{
  t_sqlcommand * sql_command;

  if (!(table))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL table");
    return NULL;
  }

  if (!(table->sql_commands))
  {
    eventlog(eventlog_level_error,__FUNCTION__,"got NULL table->sql_commands");
    return NULL;
  }

  if (!(curr_cmd = list_get_first(table->sql_commands)))
  {
    return NULL;