diff options
Diffstat (limited to 'REORG.TODO/iconvdata/cns11643l2.h')
-rw-r--r-- | REORG.TODO/iconvdata/cns11643l2.h | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/REORG.TODO/iconvdata/cns11643l2.h b/REORG.TODO/iconvdata/cns11643l2.h new file mode 100644 index 0000000000..2f48b845ca --- /dev/null +++ b/REORG.TODO/iconvdata/cns11643l2.h @@ -0,0 +1,86 @@ +/* Access functions for CNS 11643, plane 2 handling. + Copyright (C) 1998-2017 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998. + + 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/>. */ + +#include <stdint.h> +#include <gconv.h> + +/* Table for CNS 11643, plane 2 to UCS4 conversion. */ +extern const uint16_t __cns11643l2_to_ucs4_tab[]; + + +static inline uint32_t +__attribute ((always_inline)) +cns11643l2_to_ucs4 (const unsigned char **s, size_t avail, + unsigned char offset) +{ + unsigned char ch = *(*s); + unsigned char ch2; + int idx; + + if (ch < offset || (ch - offset) <= 0x20 || (ch - offset) > 0x7d) + return __UNKNOWN_10646_CHAR; + + if (avail < 2) + return 0; + + ch2 = (*s)[1]; + if ((ch2 - offset) <= 0x20 || (ch2 - offset) >= 0x7f) + return __UNKNOWN_10646_CHAR; + + idx = (ch - 0x21 - offset) * 94 + (ch2 - 0x21 - offset); + if (idx > 0x1de1) + return __UNKNOWN_10646_CHAR; + + (*s) += 2; + + return __cns11643l2_to_ucs4_tab[idx] ?: ((*s) -= 2, __UNKNOWN_10646_CHAR); +} + + +/* The table which contains the CNS 11643 level 2 mappings. */ +extern const char __cns11643_from_ucs4p0_tab[][3]; + + +static inline size_t +__attribute ((always_inline)) +ucs4_to_cns11643l2 (uint32_t wch, unsigned char *s, size_t avail) +{ + unsigned int ch = (unsigned int) wch; + const char *cp = NULL; + + if (ch >= 0x4e07 && ch <= 0x9fa4) + { + cp = __cns11643_from_ucs4p0_tab[ch - 0x3400]; + if (cp[0] == '\2') + ++cp; + else + cp = NULL; + } + + if (cp == NULL) + return __UNKNOWN_10646_CHAR; + + if (avail < 2) + return 0; + + s[0] = cp[0]; + s[1] = cp[1]; + + return 2; +} |