Mercurial > libbuf
view buf-sub.c @ 14:1297027290b9
misc: add CHANGES.md
author | David Demelier <markand@malikania.fr> |
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date | Wed, 16 Dec 2020 15:41:26 +0100 |
parents | cf8cb4a0729e |
children | 939fe74cd80a |
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/* * buf-sub.c -- simple string buffer for C * * Copyright (c) 2019-2020 David Demelier <markand@malikania.fr> * * Permission to use, copy, modify, and/or distribute this software for any * purpose with or without fee is hereby granted, provided that the above * copyright notice and this permission notice appear in all copies. * * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ #include <assert.h> #include <stdlib.h> #include <string.h> #include "buf.h" bool buf_sub(struct buf *b, const struct buf *src, size_t pos, size_t count) { assert(b); assert(src); assert(pos <= src->length); if (count >= src->length) count = src->length - pos; if (!(b->data = BUF_MALLOC(count + 1))) return false; strncpy(b->data, &src->data[pos], count); b->length = count; b->capacity = count; b->data[b->length] = 0; return true; }