51 lines
1.0 KiB
C
51 lines
1.0 KiB
C
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// Copyright 2019 Lassi Kortela
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// SPDX-License-Identifier: BSD-3-Clause
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "buf.h"
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struct buf *buf_new(void) { return calloc(1, sizeof(struct buf)); }
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char *buf_resb(struct buf *buf, size_t nbyte)
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{
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char *place;
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while (buf->cap - buf->fill < nbyte) {
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if (!(buf->cap *= 2)) {
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buf->cap = 64;
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}
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}
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if (!(buf->bytes = realloc(buf->bytes, buf->cap))) {
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exit(1);
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}
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place = buf->bytes + buf->fill;
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buf->fill += nbyte;
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return place;
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}
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void buf_putc(struct buf *buf, int c) { buf_resb(buf, 1)[0] = c; }
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void buf_putb(struct buf *buf, const void *bytes, size_t nbyte)
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{
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memcpy(buf_resb(buf, nbyte), bytes, nbyte);
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}
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void buf_puts(struct buf *buf, const char *s) { buf_putb(buf, s, strlen(s)); }
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void buf_putu(struct buf *buf, uint64_t u)
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{
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char tmp[24];
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snprintf(tmp, sizeof(tmp), "%llu", u);
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buf_puts(buf, tmp);
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}
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void buf_free(struct buf *buf)
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{
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free(buf->bytes);
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free(buf);
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}
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