| /* Functions for JISX0213 conversion. |
| Copyright (C) 2002-2018 Free Software Foundation, Inc. |
| This file is part of the GNU C Library. |
| Contributed by Bruno Haible <bruno@clisp.org>, 2002. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, see |
| <http://www.gnu.org/licenses/>. */ |
| |
| #ifndef _JISX0213_H |
| #define _JISX0213_H 1 |
| |
| #include <stdint.h> |
| |
| extern const uint16_t __jisx0213_to_ucs_combining[][2]; |
| extern const uint16_t __jisx0213_to_ucs_main[120 * 94]; |
| extern const uint32_t __jisx0213_to_ucs_pagestart[]; |
| extern const int16_t __jisx0213_from_ucs_level1[2715]; |
| extern const uint16_t __jisx0213_from_ucs_level2[]; |
| |
| #define NELEMS(arr) (sizeof (arr) / sizeof (arr[0])) |
| |
| static inline uint32_t |
| __attribute ((always_inline)) |
| jisx0213_to_ucs4 (unsigned int row, unsigned int col) |
| { |
| uint32_t val; |
| |
| if (row >= 0x121 && row <= 0x17e) |
| row -= 289; |
| else if (row == 0x221) |
| row -= 451; |
| else if (row >= 0x223 && row <= 0x225) |
| row -= 452; |
| else if (row == 0x228) |
| row -= 454; |
| else if (row >= 0x22c && row <= 0x22f) |
| row -= 457; |
| else if (row >= 0x26e && row <= 0x27e) |
| row -= 519; |
| else |
| return 0x0000; |
| |
| if (col >= 0x21 && col <= 0x7e) |
| col -= 0x21; |
| else |
| return 0x0000; |
| |
| val = __jisx0213_to_ucs_main[row * 94 + col]; |
| val = __jisx0213_to_ucs_pagestart[val >> 8] + (val & 0xff); |
| if (val == 0xfffd) |
| val = 0x0000; |
| return val; |
| } |
| |
| static inline uint16_t |
| __attribute ((always_inline)) |
| ucs4_to_jisx0213 (uint32_t ucs) |
| { |
| if (ucs < NELEMS (__jisx0213_from_ucs_level1) << 6) |
| { |
| int index1 = __jisx0213_from_ucs_level1[ucs >> 6]; |
| if (index1 >= 0) |
| return __jisx0213_from_ucs_level2[(index1 << 6) + (ucs & 0x3f)]; |
| } |
| return 0x0000; |
| } |
| |
| static inline int |
| __attribute ((always_inline)) |
| jisx0213_added_in_2004_p (uint16_t val) |
| { |
| /* From JISX 0213:2000 to JISX 0213:2004, 10 characters were added to |
| plane 1, and plane 2 was left unchanged. See ISO-IR-233. */ |
| switch (val >> 8) |
| { |
| case 0x2e: |
| return val == 0x2e21; |
| case 0x2f: |
| return val == 0x2f7e; |
| case 0x4f: |
| return val == 0x4f54 || val == 0x4f7e; |
| case 0x74: |
| return val == 0x7427; |
| case 0x7e: |
| return val >= 0x7e7a && val <= 0x7e7e; |
| default: |
| return 0; |
| } |
| } |
| |
| #endif /* _JISX0213_H */ |
