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/* Output to stdout / stderr for GNU Make
Copyright (C) 2013-2023 Free Software Foundation, Inc.
This file is part of GNU Make.
GNU Make is free software; you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation; either version 3 of the License, or (at your option) any later
version.
GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE. See the GNU General Public License for more details.
You should have received a copy of the GNU General Public License along with
this program. If not, see <https://www.gnu.org/licenses/>. */
struct output
{
int out;
int err;
unsigned int syncout:1; /* True if we want to synchronize output. */
};
extern struct output *output_context;
extern unsigned int stdio_traced;
#define FD_STDIN (fileno (stdin))
#define FD_STDOUT (fileno (stdout))
#define FD_STDERR (fileno (stderr))
#define OUTPUT_SET(_new) do{ output_context = (_new)->syncout ? (_new) : NULL; }while(0)
#define OUTPUT_UNSET() do{ output_context = NULL; }while(0)
#define OUTPUT_TRACED() do{ stdio_traced = 1; }while(0)
#define OUTPUT_IS_TRACED() (!!stdio_traced)
/* Write a buffer directly to the given file descriptor.
This handles errors etc. */
int output_write (int fd, const void *buffer, size_t len);
/* Initialize and close a child output structure: if NULL do this program's
output (this should only be done once). */
void output_init (struct output *out);
void output_close (struct output *out);
/* In situations where output may be about to be displayed but we're not
sure if we've set it up yet, call this. */
void output_start (void);
/* Show a message on stdout or stderr. Will start the output if needed. */
void outputs (int is_err, const char *msg);
#if defined(NO_OUTPUT_SYNC)
# define output_dump(_o) (void)(0)
#else
/* Dump any child output content to stdout, and reset it. */
void output_dump (struct output *out);
#endif
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