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96 lines
3.5 KiB
C++
96 lines
3.5 KiB
C++
/* -*- c-basic-offset: 2 -*- */
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/*
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Copyright(C) 2011-2013 Kentoku SHIBA
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Copyright(C) 2011-2012 Kouhei Sutou <kou@clear-code.com>
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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This library 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 GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1335 USA
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*/
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#include <mrn_mysql.h>
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#include "mrn_index_column_name.hpp"
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#define MRN_MIN_INDEX_COLUMN_NAME_LENGTH 65
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// for debug
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#define MRN_CLASS_NAME "mrn::IndexColumnName"
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namespace mrn {
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IndexColumnName::IndexColumnName(const char *table_name,
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const char *mysql_column_name)
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: table_name_(table_name),
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mysql_column_name_(mysql_column_name) {
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uchar encoded_mysql_column_name_multibyte[MRN_MAX_KEY_SIZE];
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const uchar *mysql_column_name_multibyte =
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reinterpret_cast<const uchar *>(mysql_column_name_);
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encode(encoded_mysql_column_name_multibyte,
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encoded_mysql_column_name_multibyte + MRN_MAX_KEY_SIZE,
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mysql_column_name_multibyte,
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mysql_column_name_multibyte + strlen(mysql_column_name_));
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snprintf(name_, MRN_MAX_KEY_SIZE,
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"%s-%s", table_name_, encoded_mysql_column_name_multibyte);
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length_ = strlen(name_);
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if (length_ < MRN_MIN_INDEX_COLUMN_NAME_LENGTH) {
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memset(name_ + length_, '-', MRN_MIN_INDEX_COLUMN_NAME_LENGTH - length_);
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length_ = MRN_MIN_INDEX_COLUMN_NAME_LENGTH;
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name_[length_] = '\0';
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}
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}
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const char *IndexColumnName::c_str() {
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return name_;
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}
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size_t IndexColumnName::length() {
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return length_;
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}
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uint IndexColumnName::encode(uchar *encoded_start,
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uchar *encoded_end,
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const uchar *mysql_string_start,
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const uchar *mysql_string_end) {
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MRN_DBUG_ENTER_METHOD();
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my_charset_conv_mb_wc mb_wc = system_charset_info->cset->mb_wc;
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my_charset_conv_wc_mb wc_mb = my_charset_filename.cset->wc_mb;
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DBUG_PRINT("info", ("mroonga: in=%s", mysql_string_start));
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encoded_end--;
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uchar *encoded = encoded_start;
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const uchar *mysql_string = mysql_string_start;
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while (mysql_string < mysql_string_end && encoded < encoded_end) {
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my_wc_t wc;
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int mb_wc_converted_length;
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int wc_mb_converted_length;
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mb_wc_converted_length =
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(*mb_wc)(NULL, &wc, mysql_string, mysql_string_end);
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if (mb_wc_converted_length > 0) {
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wc_mb_converted_length = (*wc_mb)(NULL, wc, encoded, encoded_end);
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if (wc_mb_converted_length <= 0) {
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break;
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}
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} else if (mb_wc_converted_length == MY_CS_ILSEQ) {
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*encoded = *mysql_string;
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mb_wc_converted_length = 1;
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wc_mb_converted_length = 1;
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} else {
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break;
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}
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mysql_string += mb_wc_converted_length;
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encoded += wc_mb_converted_length;
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}
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*encoded = '\0';
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DBUG_PRINT("info", ("mroonga: out=%s", encoded_start));
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DBUG_RETURN(encoded - encoded_start);
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}
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}
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