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freebsd-nq/bin/sh/expand.h

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BSD 4.4 Lite bin Sources
1994-05-26 06:18:55 +00:00
/*-
* Copyright (c) 1991, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Kenneth Almquist.
*
* 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.
Renumber copyright clause 4 Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00
* 3. Neither the name of the University nor the names of its contributors
BSD 4.4 Lite bin Sources
1994-05-26 06:18:55 +00:00
* 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.
*
Merge of 4.4-Lite2 sh source, plus some gcc -Wall cleaning. This is a merge of parallel duplicate work by Steve Price and myself. :-] There are some changes to the build that are my fault... mkinit.c was trying (poorly) to duplicate some of the work that make(1) is designed to do. The Makefile hackery is my fault too, the depend list was incomplete because of some explicit OBJS+= entries, so mkdep wasn't picking up their source file #includes. This closes a pile of /bin/sh PR's, but not all of them.. Submitted by: Steve Price <steve@bonsai.hiwaay.net>, peter
1996-09-01 10:22:36 +00:00
* @(#)expand.h 8.2 (Berkeley) 5/4/95
$Id$ -> $FreeBSD$
1999-08-27 23:15:48 +00:00
* $FreeBSD$
BSD 4.4 Lite bin Sources
1994-05-26 06:18:55 +00:00
*/
struct arglist {
sh: Make struct arglist an array instead of a linked list. This simplifies the code (e.g. allowing use of qsort(3) instead of a hand-rolled mergesort) and should have better cache properties. The waste of unused args arrays after resizes is approximately the same as the savings from getting rid of the next pointers. At the same time, remove a piece of global state and move some duplicated code into a function.
2015-10-11 21:33:00 +00:00
char **args;
int count;
int capacity;
char *smallarg[1];
BSD 4.4 Lite bin Sources
1994-05-26 06:18:55 +00:00
};
/*
* expandarg() flags
*/
sh: Perform pathname generation during the first expansion phases. This avoids the need to add and remove CTLESC bytes if pathname generation will not be performed (set -f). Side effect: the order of operations is slightly different: pathname generation in ${$+* $(CMD)} will not see filesystem changes from CMD.
2015-12-31 18:47:54 +00:00
#define EXP_SPLIT 0x1 /* perform word splitting */
BSD 4.4 Lite bin Sources
1994-05-26 06:18:55 +00:00
#define EXP_TILDE 0x2 /* do normal tilde expansion */
#define EXP_VARTILDE 0x4 /* expand tildes in an assignment */
#define EXP_CASE 0x10 /* keeps quotes around for CASE pattern */
sh: Do IFS splitting on word in ${v+word} and ${v-word}. The code is inspired by NetBSD sh somewhat, but different because we preserve the old Almquist/Bourne/Korn ability to have an unquoted part in a quoted ${v+word}. For example, "${v-"*"}" expands to $v as a single field if v is set, but generates filenames otherwise. Note that this is the only place where we split text literally from the script (the similar ${v=word} assigns to v and then expands $v). The parser must now add additional markers to allow the expansion code to know whether arbitrary characters in substitutions are quoted. Example: for i in ${$+a b c}; do echo $i; done Exp-run done by: pav (with some other sh(1) changes)
2010-10-29 13:42:18 +00:00
#define EXP_SPLIT_LIT 0x20 /* IFS split literal text ${v+-a b c} */
#define EXP_LIT_QUOTED 0x40 /* for EXP_SPLIT_LIT, start off quoted */
sh: Perform pathname generation during the first expansion phases. This avoids the need to add and remove CTLESC bytes if pathname generation will not be performed (set -f). Side effect: the order of operations is slightly different: pathname generation in ${$+* $(CMD)} will not see filesystem changes from CMD.
2015-12-31 18:47:54 +00:00
#define EXP_GLOB 0x80 /* perform file globbing */
#define EXP_FULL (EXP_SPLIT | EXP_GLOB)
BSD 4.4 Lite bin Sources
1994-05-26 06:18:55 +00:00
sh: Make struct arglist an array instead of a linked list. This simplifies the code (e.g. allowing use of qsort(3) instead of a hand-rolled mergesort) and should have better cache properties. The waste of unused args arrays after resizes is approximately the same as the savings from getting rid of the next pointers. At the same time, remove a piece of global state and move some duplicated code into a function.
2015-10-11 21:33:00 +00:00
void emptyarglist(struct arglist *);
sh: Avoid copying argv for simple commands. Add dummy entries before and after so arglist's array is directly usable as argv.
2015-11-01 22:07:40 +00:00
void appendarglist(struct arglist *, char *);
BSD 4.4 Lite bin Sources
1994-05-26 06:18:55 +00:00
union node;
o __P has been reoved o Old-style K&R declarations have been converted to new C89 style o register has been removed o prototype for main() has been removed (gcc3 makes it an error) o int main(int argc, char *argv[]) is the preferred main definition. o Attempt to not break style(9) conformance for declarations more than they already are. o Change int foo() { ... to int foo(void) { ...
2002-02-02 06:50:57 +00:00
void expandarg(union node *, struct arglist *, int);
void rmescapes(char *);
sh: Constify various strings. Most of this is adding const keywords, but setvar() in var.c had to be changed somewhat more.
2009-12-24 18:41:14 +00:00
int casematch(union node *, const char *);
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