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freebsd-dev/bin/sh/input.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.
* 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.
*
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
* @(#)input.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
*/
/* PEOF (the end of file marker) is defined in syntax.h */
/*
* The input line number. Input.c just defines this variable, and saves
* and restores it when files are pushed and popped. The user of this
* package must set its value.
*/
extern int plinno;
extern int parsenleft; /* number of characters left in input buffer */
extern char *parsenextc; /* next character in input buffer */
extern int init_editline; /* 0 == not setup, 1 == OK, -1 == failed */
sh: Ensure the same command input file is on top after executing a builtin. This avoids weirdness when 'fc -e vi' or the like is done and there is a syntax error in the file. Formerly an interactive shell tried to execute stuff after the syntax error and exited. This should also avoid similar issues with 'command eval' and 'command .' when 'command' is implemented properly as in NetBSD sh. Special builtins did not have this problem since errors in them cause the shell to exit or to reset various state such as the current command input file.
2009-11-22 14:04:20 +00:00
struct parsefile;
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
char *pfgets(char *, int);
int pgetc(void);
int preadbuffer(void);
Avoid leaving unnecessary waiting shells in many forms of sh -c COMMAND. This change only affects strings passed to -c, when the -s option is not used. The approach is to check if there may be additional data in the string after parsing each command. If there is none, use the EV_EXIT flag so that a fork may be omitted in specific cases. If there are empty lines after the command, the check will not see the end and forks will not be omitted. The same thing seems to happen in bash. Example: sh -c 'ps lT' No longer shows a shell process waiting for ps to finish. PR: bin/113860 Reviewed by: stefanf Approved by: ed (mentor)
2009-06-13 21:17:45 +00:00
int preadateof(void);
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 pungetc(void);
void pushstring(char *, int, void *);
void popstring(void);
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
void setinputfile(const char *, int);
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 setinputfd(int, int);
void setinputstring(char *, int);
void popfile(void);
sh: Ensure the same command input file is on top after executing a builtin. This avoids weirdness when 'fc -e vi' or the like is done and there is a syntax error in the file. Formerly an interactive shell tried to execute stuff after the syntax error and exited. This should also avoid similar issues with 'command eval' and 'command .' when 'command' is implemented properly as in NetBSD sh. Special builtins did not have this problem since errors in them cause the shell to exit or to reset various state such as the current command input file.
2009-11-22 14:04:20 +00:00
struct parsefile *getcurrentfile(void);
void popfilesupto(struct parsefile *);
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 popallfiles(void);
void closescript(void);
BSD 4.4 Lite bin Sources
1994-05-26 06:18:55 +00:00
#define pgetc_macro() (--parsenleft >= 0? *parsenextc++ : preadbuffer())
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