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Diffstat (limited to 'src/u8c/u32fndpat.c')
-rw-r--r-- | src/u8c/u32fndpat.c | 51 |
1 files changed, 51 insertions, 0 deletions
diff --git a/src/u8c/u32fndpat.c b/src/u8c/u32fndpat.c new file mode 100644 index 0000000..05071e5 --- /dev/null +++ b/src/u8c/u32fndpat.c @@ -0,0 +1,51 @@ +/* + 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/seterr.h> +# include <u8c/u32cmp.h> +# include <u8c/u32fndpat.h> +# include <u8c/u32free.h> +# include <u8c/u32substr.h> +# include <u8c/u32sz.h> +bool u8c_u32fndpat(size_t * const _pos,char32_t const * const _in,char32_t const * const _pat) { + assert(_pos != NULL); + assert(_in != NULL); + size_t insz = SIZE_C(0x0); + size_t patsz = SIZE_C(0x0); + u8c_u32sz(&insz,_in); + u8c_u32sz(&patsz,_pat); + if(insz == SIZE_C(0x1) || insz < patsz) { + *_pos = SIZE_C(-0x1); + return false; + } + for(register size_t n = SIZE_C(0x0);n < insz - patsz;n += SIZE_C(0x1)) { + char32_t const * str = NULL; + u8c_u32substr(&str,n,patsz - SIZE_C(0x1),_in); + uint_least8_t cmpres = UINT8_C(0x0); + u8c_u32cmp(&cmpres,str,_pat); + u8c_u32free(&str); + if(cmpres == UINT8_C(0x1)) { + *_pos = n; + return false; + } + } + *_pos = SIZE_C(-0x1); + return false; +} |