Mercurial > libbuf
view buf-resize.c @ 13:3e1c384e0d3f
buf_puts: uses memcpy as it may be optimized
author | David Demelier <markand@malikania.fr> |
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date | Sat, 12 Dec 2020 21:50:23 +0100 |
parents | b1991ee4451d |
children | 939fe74cd80a |
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/* * buf-resize.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 <string.h> #include "buf.h" #include "buf-int.h" bool buf_resize(struct buf *b, size_t size, char ch) { assert(b); /* New size is smaller than curren't length, just update it. */ if (size < b->length) { b->data[b->length = size] = 0; return true; } /* New size is bigger, data may be reallocated. */ if (!_buf_grow(b, size - b->length)) return false; memset(&b->data[b->length], ch, size - b->length); b->length = size; b->data[b->length] = 0; return true; }