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111 lines
2.9 KiB
111 lines
2.9 KiB
5 months ago
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/* Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
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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, version 2.0,
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as published by the Free Software Foundation.
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This program is also distributed with certain software (including
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but not limited to OpenSSL) that is licensed under separate terms,
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as designated in a particular file or component or in included license
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documentation. The authors of MySQL hereby grant you an additional
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permission to link the program and your derivative works with the
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separately licensed software that they have included with MySQL.
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Without limiting anything contained in the foregoing, this file,
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which is part of C Driver for MySQL (Connector/C), is also subject to the
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Universal FOSS Exception, version 1.0, a copy of which can be found at
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http://oss.oracle.com/licenses/universal-foss-exception.
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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, version 2.0, 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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/**
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@file mysys/ptr_cmp.cc
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*/
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#include "my_config.h"
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#include <stddef.h>
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#include "my_byteorder.h"
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#include "my_dbug.h"
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#include "my_inttypes.h"
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#include "my_sys.h" // IWYU pragma: keep
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#include "myisampack.h"
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void my_store_ptr(uchar *buff, size_t pack_length, my_off_t pos) {
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switch (pack_length) {
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#if SIZEOF_OFF_T > 4
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case 8:
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mi_int8store(buff, pos);
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break;
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case 7:
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mi_int7store(buff, pos);
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break;
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case 6:
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mi_int6store(buff, pos);
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break;
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case 5:
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mi_int5store(buff, pos);
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break;
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#endif
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case 4:
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mi_int4store(buff, pos);
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break;
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case 3:
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mi_int3store(buff, pos);
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break;
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case 2:
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mi_int2store(buff, pos);
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break;
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case 1:
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buff[0] = (uchar)pos;
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break;
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default:
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DBUG_ASSERT(0);
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}
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return;
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}
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my_off_t my_get_ptr(uchar *ptr, size_t pack_length) {
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my_off_t pos;
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switch (pack_length) {
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#if SIZEOF_OFF_T > 4
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case 8:
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pos = (my_off_t)mi_uint8korr(ptr);
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break;
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case 7:
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pos = (my_off_t)mi_uint7korr(ptr);
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break;
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case 6:
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pos = (my_off_t)mi_uint6korr(ptr);
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break;
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case 5:
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pos = (my_off_t)mi_uint5korr(ptr);
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break;
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#endif
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case 4:
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pos = (my_off_t)mi_uint4korr(ptr);
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break;
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case 3:
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pos = (my_off_t)mi_uint3korr(ptr);
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break;
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case 2:
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pos = (my_off_t)mi_uint2korr(ptr);
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break;
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case 1:
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pos = (my_off_t) * (uchar *)ptr;
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break;
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default:
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DBUG_ASSERT(0);
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return 0;
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}
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return pos;
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}
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