mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-14 10:09:48 +00:00
118 lines
2.7 KiB
C
118 lines
2.7 KiB
C
/*
|
|
* $Id: prgbox.c,v 1.9 2012/12/02 23:40:30 tom Exp $
|
|
*
|
|
* prgbox.c -- implements the prg box
|
|
*
|
|
* Copyright 2011,2012 Thomas E. Dickey
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify
|
|
* it under the terms of the GNU Lesser General Public License, version 2.1
|
|
* as published by the Free Software Foundation.
|
|
*
|
|
* This program 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
|
|
* Lesser General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Lesser General Public
|
|
* License along with this program; if not, write to
|
|
* Free Software Foundation, Inc.
|
|
* 51 Franklin St., Fifth Floor
|
|
* Boston, MA 02110, USA.
|
|
*/
|
|
|
|
#include <dialog.h>
|
|
|
|
static void
|
|
reapchild(int sig)
|
|
{
|
|
(void) sig;
|
|
}
|
|
|
|
/*
|
|
* Open a pipe which ties stderr and stdout together.
|
|
*/
|
|
static FILE *
|
|
dlg_popen(const char *command, const char *type)
|
|
{
|
|
FILE *result = 0;
|
|
int fd[2];
|
|
char *blob;
|
|
char **argv;
|
|
|
|
if ((*type == 'r' || *type != 'w') && pipe(fd) == 0) {
|
|
switch (fork()) {
|
|
case -1: /* Error. */
|
|
(void) close(fd[0]);
|
|
(void) close(fd[1]);
|
|
break;
|
|
case 0: /* child. */
|
|
if (*type == 'r') {
|
|
if (fd[1] != STDOUT_FILENO) {
|
|
(void) dup2(fd[1], STDOUT_FILENO);
|
|
(void) close(fd[1]);
|
|
}
|
|
(void) dup2(STDOUT_FILENO, STDERR_FILENO);
|
|
(void) close(fd[0]);
|
|
} else {
|
|
if (fd[0] != STDIN_FILENO) {
|
|
(void) dup2(fd[0], STDIN_FILENO);
|
|
(void) close(fd[0]);
|
|
}
|
|
(void) close(fd[1]);
|
|
(void) close(STDERR_FILENO);
|
|
}
|
|
/*
|
|
* Bourne shell needs "-c" option to force it to use only the
|
|
* given command. Also, it needs the command to be parsed into
|
|
* tokens.
|
|
*/
|
|
if ((blob = malloc(4 + strlen(command))) != 0) {
|
|
sprintf(blob, "-c %s", command);
|
|
argv = dlg_string_to_argv(blob);
|
|
execvp("sh", argv);
|
|
}
|
|
_exit(127);
|
|
/* NOTREACHED */
|
|
default: /* parent */
|
|
if (*type == 'r') {
|
|
result = fdopen(fd[0], type);
|
|
(void) close(fd[1]);
|
|
} else {
|
|
result = fdopen(fd[1], type);
|
|
(void) close(fd[0]);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Display text from a pipe in a scrolling window.
|
|
*/
|
|
int
|
|
dialog_prgbox(const char *title,
|
|
const char *cprompt,
|
|
const char *command,
|
|
int height,
|
|
int width,
|
|
int pauseopt)
|
|
{
|
|
int code;
|
|
FILE *fp;
|
|
void (*oldreaper) (int) = signal(SIGCHLD, reapchild);
|
|
|
|
fp = dlg_popen(command, "r");
|
|
if (fp == NULL)
|
|
dlg_exiterr("pipe open failed: %s", command);
|
|
|
|
code = dlg_progressbox(title, cprompt, height, width, pauseopt, fp);
|
|
|
|
pclose(fp);
|
|
signal(SIGCHLD, oldreaper);
|
|
|
|
return code;
|
|
}
|