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/* This file is part of the SvarCOM project and is published under the terms
* of the MIT license.
*
* Copyright (C) 2021 Mateusz Viste
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#ifndef REDIR_H
#define REDIR_H
#define REDIR_MAX_PIPES 15
struct redir_data {
char *pipes[REDIR_MAX_PIPES + 1];
char *stdinfile;
char *stdoutfile;
unsigned short stdout_openflag; /* 0x11 or 0x12, used for the 'extended open' call */
};
/* parse commandline and performs necessary redirections. cmdline is
* modified so all redirections are cut out.
* piped commands are move to awaitingcmd for later execution
* returns 0 on success, DOS err on failure */
unsigned short redir_parsecmd(struct redir_data *d, char *cmdline, char far *awaitingcmd);
/* apply stdin/stdout redirections defined in redir_data, returns 0 on success */
int redir_apply(const struct redir_data *d);
/* restores previous stdout/stdin handlers if they have been redirected */
void redir_revert(void);
#endif