f7cc73afc8
- correctly handle error output in $(builtin 2>&1), clarify out1/out2 vs output/errout in the code - treat all builtins as regular builtins so errors do not abort the shell and variable assignments do not persist - respect the caller's INTOFF Some bugs still exist: - expansion errors may still abort the shell - some side effects of expansions and builtins persist
79 lines
3.0 KiB
C
79 lines
3.0 KiB
C
/*-
|
|
* 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.
|
|
*
|
|
* @(#)output.h 8.2 (Berkeley) 5/4/95
|
|
* $FreeBSD$
|
|
*/
|
|
|
|
#ifndef OUTPUT_INCL
|
|
|
|
#include <stdarg.h>
|
|
|
|
struct output {
|
|
char *nextc;
|
|
int nleft;
|
|
char *buf;
|
|
int bufsize;
|
|
short fd;
|
|
short flags;
|
|
};
|
|
|
|
extern struct output output; /* to fd 1 */
|
|
extern struct output errout; /* to fd 2 */
|
|
extern struct output memout;
|
|
extern struct output *out1; /* &memout if backquote, otherwise &output */
|
|
extern struct output *out2; /* &memout if backquote with 2>&1, otherwise
|
|
&errout */
|
|
|
|
void out1str(const char *);
|
|
void out1qstr(const char *);
|
|
void out2str(const char *);
|
|
void out2qstr(const char *);
|
|
void outstr(const char *, struct output *);
|
|
void outqstr(const char *, struct output *);
|
|
void emptyoutbuf(struct output *);
|
|
void flushall(void);
|
|
void flushout(struct output *);
|
|
void freestdout(void);
|
|
void outfmt(struct output *, const char *, ...) __printflike(2, 3);
|
|
void out1fmt(const char *, ...) __printflike(1, 2);
|
|
void out2fmt_flush(const char *, ...) __printflike(1, 2);
|
|
void fmtstr(char *, int, const char *, ...) __printflike(3, 4);
|
|
void doformat(struct output *, const char *, va_list) __printflike(2, 0);
|
|
int xwrite(int, const char *, int);
|
|
|
|
#define outc(c, file) (--(file)->nleft < 0? (emptyoutbuf(file), *(file)->nextc++ = (c)) : (*(file)->nextc++ = (c)))
|
|
#define out1c(c) outc(c, out1);
|
|
#define out2c(c) outc(c, out2);
|
|
|
|
#define OUTPUT_INCL
|
|
#endif
|