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574.3.4
by Lee
moving functions from item_strfunc to functions/str directory |
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/* -*- mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; -*-
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* vim:expandtab:shiftwidth=2:tabstop=2:smarttab:
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*
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* Copyright (C) 2008 Sun Microsystems
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*
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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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*
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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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*
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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 St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include <drizzled/server_includes.h> |
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#include CSTDINT_H
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670.1.20
by Monty Taylor
Renamed functions to function... everything else is singular. |
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#include <drizzled/function/str/right.h> |
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574.3.4
by Lee
moving functions from item_strfunc to functions/str directory |
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String *Item_func_right::val_str(String *str) |
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{
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assert(fixed == 1); |
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String *res= args[0]->val_str(str); |
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/* must be int64_t to avoid truncation */
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int64_t length= args[1]->val_int(); |
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if ((null_value=(args[0]->null_value || args[1]->null_value))) |
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return 0; /* purecov: inspected */ |
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/* if "unsigned_flag" is set, we have a *huge* positive number. */
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if ((length <= 0) && (!args[1]->unsigned_flag)) |
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return &my_empty_string; /* purecov: inspected */ |
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if (res->length() <= (uint64_t) length) |
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return res; /* purecov: inspected */ |
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uint32_t start=res->numchars(); |
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if (start <= (uint) length) |
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return res; |
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start=res->charpos(start - (uint) length); |
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tmp_value.set(*res,start,res->length()-start); |
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return &tmp_value; |
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}
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void Item_func_right::fix_length_and_dec() |
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{
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collation.set(args[0]->collation); |
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left_right_max_length(); |
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}
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