mirror of
https://github.com/freebsd/freebsd-src
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1b65f0bd2b
o allow env var MAKE_OBJDIR_CHECK_WRITABLE=no to skip writable checks in InitObjdir. Explicit .OBJDIR target always allows read-only directory. o Fix building and unit-tests on non-BSD. o More code cleanup and refactoring. o More unit tests
133 lines
5.1 KiB
C
133 lines
5.1 KiB
C
/* $NetBSD: buf.h,v 1.36 2020/11/10 00:32:12 rillig Exp $ */
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/*
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* Copyright (c) 1988, 1989, 1990 The Regents of the University of California.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)buf.h 8.1 (Berkeley) 6/6/93
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*/
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/*
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* Copyright (c) 1988, 1989 by Adam de Boor
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* Copyright (c) 1989 by Berkeley Softworks
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* Adam de Boor.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)buf.h 8.1 (Berkeley) 6/6/93
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*/
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/* Automatically growing null-terminated buffers of characters. */
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#ifndef MAKE_BUF_H
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#define MAKE_BUF_H
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#include <stddef.h>
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/* An automatically growing null-terminated buffer of characters. */
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typedef struct Buffer {
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size_t cap; /* Allocated size of the buffer, including the null */
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size_t len; /* Number of bytes in buffer, excluding the null */
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char *data; /* The buffer itself (always null-terminated) */
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} Buffer;
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/* If we aren't on NetBSD, __predict_false() might not be defined. */
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#ifndef __predict_false
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#define __predict_false(x) (x)
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#endif
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void Buf_Expand_1(Buffer *);
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/* Buf_AddByte adds a single byte to a buffer. */
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MAKE_INLINE void
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Buf_AddByte(Buffer *buf, char byte)
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{
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size_t old_len = buf->len++;
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char *end;
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if (__predict_false(old_len + 1 >= buf->cap))
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Buf_Expand_1(buf);
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end = buf->data + old_len;
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end[0] = byte;
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end[1] = '\0';
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}
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MAKE_INLINE size_t
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Buf_Len(const Buffer *buf)
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{
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return buf->len;
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}
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MAKE_INLINE Boolean
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Buf_EndsWith(const Buffer *buf, char ch)
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{
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return buf->len > 0 && buf->data[buf->len - 1] == ch;
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}
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void Buf_AddBytes(Buffer *, const char *, size_t);
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void Buf_AddBytesBetween(Buffer *, const char *, const char *);
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void Buf_AddStr(Buffer *, const char *);
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void Buf_AddInt(Buffer *, int);
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char *Buf_GetAll(Buffer *, size_t *);
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void Buf_Empty(Buffer *);
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void Buf_Init(Buffer *);
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void Buf_InitSize(Buffer *, size_t);
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char *Buf_Destroy(Buffer *, Boolean);
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char *Buf_DestroyCompact(Buffer *);
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#endif /* MAKE_BUF_H */
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