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/*******************************************************************************
* Copyright (c) 2013-2021, Andrés Martinelli <andmarti@gmail.com> *
* All rights reserved. *
* *
* This file is a part of SC-IM *
* *
* SC-IM is a spreadsheet program that is based on SC. The original authors *
* of SC are James Gosling and Mark Weiser, and mods were later added by *
* Chuck Martin. *
* *
* 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. *
* 3. All advertising materials mentioning features or use of this software *
* must display the following acknowledgement: *
* This product includes software developed by Andrés Martinelli *
* <andmarti@gmail.com>. *
* 4. Neither the name of the Andrés Martinelli nor the *
* names of other contributors may be used to endorse or promote products *
* derived from this software without specific prior written permission. *
* *
* THIS SOFTWARE IS PROVIDED BY ANDRES MARTINELLI ''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 ANDRES MARTINELLI 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 *
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. *
*******************************************************************************/
/**
* \file exec.c
* \author Andrés Martinelli <andmarti@gmail.com>
* \date 2017-07-18
* \brief TODO Write a brief file description.
*/
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <string.h>
#include <sys/wait.h> // for wait
#include <errno.h>
#include "macros.h"
#include "conf.h"
#include "utils/string.h"
#include "tui.h"
#include "sc.h"
#include "main.h" // exit_app
/**
* \brief TODO Document exec_cmd()
*
* \param[in] line
*
* \return none
*/
int exec_cmd (char * line) {
#ifdef NCURSES
int waitres;
ui_pause();
int my_pipe[2];
if (pipe(my_pipe) == -1) {
sc_error("Error creating pipe");
getchar();
ui_resume();
ui_update(TRUE);
return -1;
}
pid_t child_id = fork();
if (child_id == -1) {
sc_error("Fork error");
getchar();
ui_resume();
ui_update(TRUE);
return -1;
}
if (child_id == 0) { // we are in the child process
close(my_pipe[0]); // child doesn't read
dup2(my_pipe[1], 1); // redirect stdout
int argc = 1;
char * p;
for (p = line; *p; p++)
argc += (*p == ' ');
char ** argv = calloc(argc+1, sizeof(char*));
int i;
for (i = 0; i < argc; i++)
argv[i] = strsep(&line, " ");
execvp(argv[0], argv);
free(argv);
sc_error("Error executing command. ");
exit_app(-1);
} else { // we are in parent process
close(my_pipe[1]); // parent doesn't write
char reading_buf[2];
while (read(my_pipe[0], reading_buf, 1) > 0) {
if (!write(1, reading_buf, 1)) {
sc_error("Failed to read command output: %s", strerror(errno));
exit_app(-1);
}
}
close(my_pipe[0]);
wait(&waitres);
if (system("echo -n 'Press ENTER to return.'") == -1) {
sc_error("Failed to show ENTER prompt: %s", strerror(errno));
exit_app(-1);
}
getchar();
ui_resume();
ui_update(TRUE);
}
#endif
return 0;
}
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