usr/src/uts/common/sys/kiconv_sc.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 #ifndef _SYS_KICONV_SC_H
  27 #define _SYS_KICONV_SC_H
  28
  29 #pragma ident   "%Z%%M% %I%     %E% SMI"
  30
  31 #ifdef __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 #ifdef  _KERNEL
  36
  37 /* Valid first byte of GB18030 character or not. */
  38 #define KICONV_SC_IS_GBK_1st_BYTE(c)            ((c) >= 0x81 && (c) <= 0xfe)
  39
  40 /* Valid 2nd byte of 2 bytes GB18030 character or not. */
  41 #define KICONV_SC_IS_GBK_2nd_BYTE(c)                                    \
  42                 (((c) >= 0x40 && (c) <= 0x7E) || ((c) >= 0x80 && (c) <= 0xFE))
  43
  44 /* Valid 2nd byte of 4 bytes GB18030 character or not. */
  45 #define KICONV_SC_IS_GB18030_2nd_BYTE(c)        ((c) >= 0x30 && (c) <= 0x39)
  46
  47 /* Valid 3rd byte of 4 bytes GB18030 character or not. */
  48 #define KICONV_SC_IS_GB18030_3rd_BYTE(c)        ((c) >= 0x81 && (c) <= 0xfe)
  49
  50 /* Valid 4th byte of 4 bytes GB18030 character or not. */
  51 #define KICONV_SC_IS_GB18030_4th_BYTE(c)                        \
  52             KICONV_SC_IS_GB18030_2nd_BYTE((c))
  53
  54 /* Get the number of bytes of one GB character(uint32_t). */
  55 #define KICONV_SC_GET_GB_LEN(v, l)                              \
  56             if (((v) & 0xFFFF0000) != 0)                        \
  57                     (l) = 4;                                    \
  58             else if (((v) & 0xFF00) != 0)                       \
  59                     (l) = 2;                                    \
  60             else                                                \
  61                     (l) = 1
  62
  63 /* Valid GB2312 byte or not. */
  64 #define KICONV_SC_IS_GB2312_BYTE(b)             ((b) >= 0xA1 && (b) <= 0xFE)
  65
  66 /* UTF-8 value of Unicode Plane 1 start code point (U+10000). */
  67 #define KICONV_SC_PLANE1_UCS4_START             (0x10000)
  68 #define KICONV_SC_PLANE1_UTF8_START             (0xF0908080)
  69
  70 /* Start code point of GB18030 which maps to U+10000. */
  71 #define KICONV_SC_PLANE1_GB18030_START          (0x90308130)
  72
  73 #endif  /* _KERNEL */
  74
  75 #ifdef __cplusplus
  76 }
  77 #endif
  78
  79 #endif /* _SYS_KICONV_SC_H */