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Diffstat (limited to '20120831/buf.c')
| -rw-r--r-- | 20120831/buf.c | 291 |
1 files changed, 0 insertions, 291 deletions
diff --git a/20120831/buf.c b/20120831/buf.c deleted file mode 100644 index ac95c16..0000000 --- a/20120831/buf.c +++ /dev/null @@ -1,291 +0,0 @@ -/* $NetBSD: buf.c,v 1.25 2012/04/24 20:26:58 sjg Exp $ */ - -/* - * Copyright (c) 1988, 1989, 1990 The Regents of the University of California. - * All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Adam de Boor. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -/* - * Copyright (c) 1988, 1989 by Adam de Boor - * Copyright (c) 1989 by Berkeley Softworks - * All rights reserved. - * - * This code is derived from software contributed to Berkeley by - * Adam de Boor. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by the University of - * California, Berkeley and its contributors. - * 4. Neither the name of the University nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#ifndef MAKE_NATIVE -static char rcsid[] = "$NetBSD: buf.c,v 1.25 2012/04/24 20:26:58 sjg Exp $"; -#else -#include <sys/cdefs.h> -#ifndef lint -#if 0 -static char sccsid[] = "@(#)buf.c 8.1 (Berkeley) 6/6/93"; -#else -__RCSID("$NetBSD: buf.c,v 1.25 2012/04/24 20:26:58 sjg Exp $"); -#endif -#endif /* not lint */ -#endif - -/*- - * buf.c -- - * Functions for automatically-expanded buffers. - */ - -#include "make.h" -#include "buf.h" - -#ifndef max -#define max(a,b) ((a) > (b) ? (a) : (b)) -#endif - -#define BUF_DEF_SIZE 256 /* Default buffer size */ - -/*- - *----------------------------------------------------------------------- - * Buf_Expand_1 -- - * Extend buffer for single byte add. - * - *----------------------------------------------------------------------- - */ -void -Buf_Expand_1(Buffer *bp) -{ - bp->size += max(bp->size, 16); - bp->buffer = bmake_realloc(bp->buffer, bp->size); -} - -/*- - *----------------------------------------------------------------------- - * Buf_AddBytes -- - * Add a number of bytes to the buffer. - * - * Results: - * None. - * - * Side Effects: - * Guess what? - * - *----------------------------------------------------------------------- - */ -void -Buf_AddBytes(Buffer *bp, int numBytes, const Byte *bytesPtr) -{ - int count = bp->count; - Byte *ptr; - - if (__predict_false(count + numBytes >= bp->size)) { - bp->size += max(bp->size, numBytes + 16); - bp->buffer = bmake_realloc(bp->buffer, bp->size); - } - - ptr = bp->buffer + count; - bp->count = count + numBytes; - ptr[numBytes] = 0; - memcpy(ptr, bytesPtr, numBytes); -} - -/*- - *----------------------------------------------------------------------- - * Buf_GetAll -- - * Get all the available data at once. - * - * Results: - * A pointer to the data and the number of bytes available. - * - * Side Effects: - * None. - * - *----------------------------------------------------------------------- - */ -Byte * -Buf_GetAll(Buffer *bp, int *numBytesPtr) -{ - - if (numBytesPtr != NULL) - *numBytesPtr = bp->count; - - return (bp->buffer); -} - -/*- - *----------------------------------------------------------------------- - * Buf_Empty -- - * Throw away bytes in a buffer. - * - * Results: - * None. - * - * Side Effects: - * The bytes are discarded. - * - *----------------------------------------------------------------------- - */ -void -Buf_Empty(Buffer *bp) -{ - - bp->count = 0; - *bp->buffer = 0; -} - -/*- - *----------------------------------------------------------------------- - * Buf_Init -- - * Initialize a buffer. If no initial size is given, a reasonable - * default is used. - * - * Input: - * size Initial size for the buffer - * - * Results: - * A buffer to be given to other functions in this library. - * - * Side Effects: - * The buffer is created, the space allocated and pointers - * initialized. - * - *----------------------------------------------------------------------- - */ -void -Buf_Init(Buffer *bp, int size) -{ - if (size <= 0) { - size = BUF_DEF_SIZE; - } - bp->size = size; - bp->count = 0; - bp->buffer = bmake_malloc(size); - *bp->buffer = 0; -} - -/*- - *----------------------------------------------------------------------- - * Buf_Destroy -- - * Nuke a buffer and all its resources. - * - * Input: - * buf Buffer to destroy - * freeData TRUE if the data should be destroyed - * - * Results: - * Data buffer, NULL if freed - * - * Side Effects: - * The buffer is freed. - * - *----------------------------------------------------------------------- - */ -Byte * -Buf_Destroy(Buffer *buf, Boolean freeData) -{ - Byte *data; - - data = buf->buffer; - if (freeData) { - free(data); - data = NULL; - } - - buf->size = 0; - buf->count = 0; - buf->buffer = NULL; - - return data; -} - - -/*- - *----------------------------------------------------------------------- - * Buf_DestroyCompact -- - * Nuke a buffer and return its data. - * - * Input: - * buf Buffer to destroy - * - * Results: - * Data buffer - * - * Side Effects: - * If the buffer size is much greater than its content, - * a new buffer will be allocated and the old one freed. - * - *----------------------------------------------------------------------- - */ -#ifndef BUF_COMPACT_LIMIT -# define BUF_COMPACT_LIMIT 128 /* worthwhile saving */ -#endif - -Byte * -Buf_DestroyCompact(Buffer *buf) -{ -#if BUF_COMPACT_LIMIT > 0 - Byte *data; - - if (buf->size - buf->count >= BUF_COMPACT_LIMIT) { - /* We trust realloc to be smart */ - data = bmake_realloc(buf->buffer, buf->count + 1); - if (data) { - data[buf->count] = 0; - Buf_Destroy(buf, FALSE); - return data; - } - } -#endif - return Buf_Destroy(buf, FALSE); -} |
