projects / apple / shell_cmds.git / blame
| Commit | Line | Data |
|---|---|---|
| 71aad674 | 1 | /*- |
| 254f12f7 A |
2 | * SPDX-License-Identifier: BSD-3-Clause |
| 3 | * | |
| 71aad674 A |
4 | * Copyright (c) 1991, 1993 |
| 5 | * The Regents of the University of California. All rights reserved. | |
| 6 | * | |
| 7 | * This code is derived from software contributed to Berkeley by | |
| 8 | * Kenneth Almquist. | |
| 9 | * | |
| 10 | * Redistribution and use in source and binary forms, with or without | |
| 11 | * modification, are permitted provided that the following conditions | |
| 12 | * are met: | |
| 13 | * 1. Redistributions of source code must retain the above copyright | |
| 14 | * notice, this list of conditions and the following disclaimer. | |
| 15 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 16 | * notice, this list of conditions and the following disclaimer in the | |
| 17 | * documentation and/or other materials provided with the distribution. | |
| 254f12f7 | 18 | * 3. Neither the name of the University nor the names of its contributors |
| 71aad674 A |
19 | * may be used to endorse or promote products derived from this software |
| 20 | * without specific prior written permission. | |
| 21 | * | |
| 22 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
| 23 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 24 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 25 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
| 26 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 27 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 28 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 29 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 30 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 31 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 32 | * SUCH DAMAGE. | |
| 33 | * | |
| 34 | * @(#)memalloc.h 8.2 (Berkeley) 5/4/95 | |
| 254f12f7 | 35 | * $FreeBSD: head/bin/sh/memalloc.h 326025 2017-11-20 19:49:47Z pfg $ |
| 71aad674 A |
36 | */ |
| 37 | ||
| 38 | #include <string.h> | |
| 39 | ||
| 40 | struct stackmark { | |
| 41 | struct stack_block *stackp; | |
| 42 | char *stacknxt; | |
| 43 | int stacknleft; | |
| 44 | }; | |
| 45 | ||
| 46 | ||
| 47 | extern char *stacknxt; | |
| 48 | extern int stacknleft; | |
| 49 | extern char *sstrend; | |
| 50 | ||
| 51 | pointer ckmalloc(size_t); | |
| 52 | pointer ckrealloc(pointer, int); | |
| 53 | void ckfree(pointer); | |
| 54 | char *savestr(const char *); | |
| 55 | pointer stalloc(int); | |
| 56 | void stunalloc(pointer); | |
| 57 | char *stsavestr(const char *); | |
| 58 | void setstackmark(struct stackmark *); | |
| 59 | void popstackmark(struct stackmark *); | |
| 60 | char *growstackstr(void); | |
| 61 | char *makestrspace(int, char *); | |
| 62 | char *stputbin(const char *data, size_t len, char *p); | |
| 63 | char *stputs(const char *data, char *p); | |
| 64 | ||
| 65 | ||
| 66 | ||
| 67 | #define stackblock() stacknxt | |
| 68 | #define stackblocksize() stacknleft | |
| 69 | #define grabstackblock(n) stalloc(n) | |
| 70 | #define STARTSTACKSTR(p) p = stackblock() | |
| 71 | #define STPUTC(c, p) do { if (p == sstrend) p = growstackstr(); *p++ = (c); } while(0) | |
| 72 | #define CHECKSTRSPACE(n, p) { if ((size_t)(sstrend - p) < n) p = makestrspace(n, p); } | |
| 73 | #define USTPUTC(c, p) (*p++ = (c)) | |
| 74 | /* | |
| 75 | * STACKSTRNUL's use is where we want to be able to turn a stack | |
| 76 | * (non-sentinel, character counting string) into a C string, | |
| 77 | * and later pretend the NUL is not there. | |
| 78 | * Note: Because of STACKSTRNUL's semantics, STACKSTRNUL cannot be used | |
| 79 | * on a stack that will grabstackstr()ed. | |
| 80 | */ | |
| 81 | #define STACKSTRNUL(p) (p == sstrend ? (p = growstackstr(), *p = '\0') : (*p = '\0')) | |
| 82 | #define STUNPUTC(p) (--p) | |
| 83 | #define STTOPC(p) p[-1] | |
| 84 | #define STADJUST(amount, p) (p += (amount)) | |
| 85 | #define grabstackstr(p) stalloc((char *)p - stackblock()) | |
| 86 | #define ungrabstackstr(s, p) stunalloc((s)) | |
| 87 | #define STPUTBIN(s, len, p) p = stputbin((s), (len), p) | |
| 88 | #define STPUTS(s, p) p = stputs((s), p) |