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/* Copyright (C) 2000-2006 MySQL AB
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; version 2 of the License.
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */
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This file defines all string functions
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Some string functions don't always put and end-null on a String.
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(This shouldn't be needed)
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#include <drizzled/query_id.h>
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#include <drizzled/error.h>
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#include <drizzled/function/str/strfunc.h>
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#include "drizzled/internal/my_static.h"
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Item_str_func::~Item_str_func() {}
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bool Item_str_func::fix_fields(Session *session, Item **ref)
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bool res= Item_func::fix_fields(session, ref);
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In Item_str_func::check_well_formed_result() we may set null_value
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flag on the same condition as in test() below.
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maybe_null= (maybe_null || true);
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my_decimal *Item_str_func::val_decimal(my_decimal *decimal_value)
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String *res, tmp(buff,sizeof(buff), &my_charset_bin);
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(void)str2my_decimal(E_DEC_FATAL_ERROR, (char*) res->ptr(),
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res->length(), res->charset(), decimal_value);
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double Item_str_func::val_real()
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char *end_not_used, buff[64];
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String *res, tmp(buff,sizeof(buff), &my_charset_bin);
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return res ? my_strntod(res->charset(), (char*) res->ptr(), res->length(),
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&end_not_used, &err_not_used) : 0.0;
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int64_t Item_str_func::val_int()
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String *res, tmp(buff,sizeof(buff), &my_charset_bin);
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my_strntoll(res->charset(), res->ptr(), res->length(), 10, NULL,
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void Item_str_func::left_right_max_length()
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max_length=args[0]->max_length;
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if (args[1]->const_item())
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int length=(int) args[1]->val_int()*collation.collation->mbmaxlen;
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set_if_smaller(max_length,(uint) length);
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String my_empty_string("",default_charset_info);
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} /* namespace drizzled */