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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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* Copyright (C) 2008 Sun Microsystems
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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#include <drizzled/function/str/insert.h>
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#include <drizzled/error.h>
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#include <drizzled/session.h>
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String *Item_func_insert::val_str(String *str)
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int64_t start, length; /* must be int64_t to avoid truncation */
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res=args[0]->val_str(str);
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res2=args[3]->val_str(&tmp_value);
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start= args[1]->val_int() - 1;
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length= args[2]->val_int();
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if (args[0]->null_value || args[1]->null_value || args[2]->null_value ||
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if ((start < 0) || (start > res->length()))
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return res; // Wrong param; skip insert
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if ((length < 0) || (length > res->length()))
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length= res->length();
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/* start and length are now sufficiently valid to pass to charpos function */
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start= res->charpos((int) start);
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length= res->charpos((int) length, (uint32_t) start);
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/* Re-testing with corrected params */
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if (start > res->length())
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if (length > res->length() - start)
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length= res->length() - start;
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if ((uint64_t) (res->length() - length + res2->length()) >
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(uint64_t) session.variables.max_allowed_packet)
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push_warning_printf(&session, DRIZZLE_ERROR::WARN_LEVEL_WARN,
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ER_WARN_ALLOWED_PACKET_OVERFLOWED,
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ER(ER_WARN_ALLOWED_PACKET_OVERFLOWED),
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func_name(), session.variables.max_allowed_packet);
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res=copy_if_not_alloced(str,res,res->length());
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res->replace((uint32_t) start,(uint32_t) length,*res2);
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void Item_func_insert::fix_length_and_dec()
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uint64_t max_result_length;
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// Handle character set for args[0] and args[3].
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if (agg_arg_charsets(collation, &args[0], 2, MY_COLL_ALLOW_CONV, 3))
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max_result_length= ((uint64_t) args[0]->max_length+
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(uint64_t) args[3]->max_length);
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if (max_result_length >= MAX_BLOB_WIDTH)
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max_result_length= MAX_BLOB_WIDTH;
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max_length= (ulong) max_result_length;
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} /* namespace drizzled */