diff options
Diffstat (limited to 'src/u8c/u8.h.d/u8dec.c')
| -rw-r--r-- | src/u8c/u8.h.d/u8dec.c | 108 |
1 files changed, 0 insertions, 108 deletions
diff --git a/src/u8c/u8.h.d/u8dec.c b/src/u8c/u8.h.d/u8dec.c deleted file mode 100644 index 4cba14f..0000000 --- a/src/u8c/u8.h.d/u8dec.c +++ /dev/null @@ -1,108 +0,0 @@ -/* - Copyright 2021 Gabriel Jensen - - This file is part of u8c. - - u8c is free software: you can redistribute it and/or modify it under the terms of the GNU Affero General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version. - - u8c 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 Affero General Public License for more details. - - You should have received a copy of the GNU Affero General Public License along with u8c. - - If not, see <https://www.gnu.org/licenses/>. -*/ -# include <assert.h> -# include <stdbool.h> -# include <stddef.h> -# include <stdint.h> -# include <u8c/SIZE_C.h> -# include <u8c/err.h> -# include <u8c/str.h> -# include <u8c/u8.h> -# include <uchar.h> -struct u8c_u8dec_tuple u8c_u8dec(unsigned char const * const restrict _in) { - struct u8c_u8dec_tuple ret = { - .stat = false, - }; - register size_t insz = SIZE_C(0x0); - for(register size_t n = SIZE_C(0x0);n <= SIZE_MAX;ret.strsz += SIZE_C(0x1)) { /* First pass: get size of input array and determine size of output array. */ - register unsigned char const tmp = _in[n]; - if(tmp == UINT8_C(0x0)) { /* Null-terminator: end of string has been reached. */ - insz = n; - goto nottoobig; - } - if(tmp >= UINT8_C(0b11111000)) { /* Too big. */ - u8c_seterr(u8c_errtyp_u8oor,U"u8c_u8dec: Character out of range (too big)."); - ret.stat = true; - return ret; - } - if(tmp >= UINT8_C(0b11110000)) { /* Four byte. */ - n += SIZE_C(0x4); - continue; - } - if(tmp >= UINT8_C(0b11100000)) { /* Three bytes. */ - n += SIZE_C(0x3); - continue; - } - if(tmp >= UINT8_C(0b11000000)) { /* Two bytes. */ - n += SIZE_C(0x2); - continue; - } - /* One byte. */ - n += SIZE_C(0x1); - } - /* Input is not null-terminated. */ - u8c_seterr(u8c_errtyp_untermin,U"u8c_u8dec: Unterminated input."); - ret.stat = true; - return ret; -nottoobig:; - uint_least32_t * out = NULL; - { - struct u8c_stralloc_tuple const tuple = u8c_stralloc(ret.strsz + SIZE_C(0x1)); - if(tuple.stat) { - ret.stat = true; - return ret; - } - out = tuple.str; - } - for(register size_t n = SIZE_C(0x0),outn = SIZE_C(0x0);n < insz;outn += SIZE_C(0x1)) { /* Second pass: decode UTF-8. */ - if(_in[n] >= UINT8_C(0b11110000)) { /* Four bytes. */ - uint_least32_t codep = (_in[n] ^ UINT32_C(0b11110000)) << UINT32_C(0x12); - n += SIZE_C(0x1); - codep += (_in[n] ^ UINT32_C(0b10000000)) << UINT32_C(0xC); - n += SIZE_C(0x1); - codep += (_in[n] ^ UINT32_C(0b10000000)) << UINT32_C(0x6); - n += SIZE_C(0x1); - codep += (uint_least32_t)(_in[n]) ^ SIZE_C(0b10000000); - n += SIZE_C(0x1); - out[outn] = codep; - continue; - } - if(_in[n] >= UINT8_C(0b11100000)) { /* Three bytes. */ - uint_least32_t codep = (_in[n] ^ UINT32_C(0b11100000)) << UINT32_C(0xC); - n += SIZE_C(0x1); - codep += (_in[n] ^ UINT32_C(0b10000000)) << UINT32_C(0x6); - n += SIZE_C(0x1); - codep += _in[n] ^ UINT32_C(0b10000000); - n += SIZE_C(0x1); - out[outn] = codep; - continue; - } - if(_in[n] >= UINT8_C(0b11000000)) { /* Two bytes. */ - uint_least32_t codep = (_in[n] ^ UINT32_C(0b11000000)) << UINT32_C(0x6); - n += SIZE_C(0x1); - codep += _in[n] ^ UINT32_C(0b10000000); - n += SIZE_C(0x1); - out[outn] = codep; - continue; - } - /* One byte. */ - out[outn] = (uint_least32_t)(_in[n]); - n += SIZE_C(0x1); - continue; - } - ret.str = out; - return ret; -} |