52bf5abd92
break mixed form dialogs in conjunction with the FreeBSD termcap, making the bsdinstall partition editor Add dialog, among other things, completely nonfunctional. This restores dialog 20110707.
110 lines
2.6 KiB
C
110 lines
2.6 KiB
C
/*
|
|
* $Id: prgbox.c,v 1.7 2011/06/30 20:44:13 tom Exp $
|
|
*
|
|
* prgbox.c -- implements the prg box
|
|
*
|
|
* Copyright 2011 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>
|
|
|
|
/*
|
|
* 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];
|
|
int pid;
|
|
const char *argv[4];
|
|
|
|
if ((*type == 'r' || *type != 'w') && pipe(fd) == 0) {
|
|
switch (pid = 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.
|
|
*/
|
|
argv[0] = "sh";
|
|
argv[1] = "-c";
|
|
argv[2] = command;
|
|
argv[3] = NULL;
|
|
execvp("sh", (char **)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;
|
|
|
|
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);
|
|
|
|
return code;
|
|
}
|