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/*
* Main program entry point - read the command line options, then perform
* the appropriate actions.
*
* Copyright 2012 Andrew Wood, distributed under the Artistic License 2.0.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "options.h"
#include "pv.h"
/* #undef MAKE_STDOUT_NONBLOCKING */
#include <unistd.h>
#include <fcntl.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <sys/types.h>
int remote_set(opts_t opts);
void remote_sig_init(opts_t opts);
/*
* Process command-line arguments and set option flags, then call functions
* to initialise, and finally enter the main loop.
*/
int main(int argc, char **argv)
{
struct termios t, t_save;
opts_t opts;
int retcode = 0;
#ifdef ENABLE_NLS
setlocale(LC_ALL, "");
bindtextdomain(PACKAGE, LOCALEDIR);
textdomain(PACKAGE);
#endif
opts = opts_parse(argc, argv);
if (!opts)
return 1;
if (opts->do_nothing) {
opts_free(opts);
return 0;
}
if (opts->remote > 0) {
if (opts->width < 0)
opts->width = 80;
if (opts->height < 0)
opts->height = 25;
if (opts->width > 999999)
opts->width = 999999;
if (opts->height > 999999)
opts->height = 999999;
if ((opts->interval != 0) && (opts->interval < 0.1))
opts->interval = 0.1;
if (opts->interval > 600)
opts->interval = 600;
retcode = remote_set(opts);
opts_free(opts);
return retcode;
}
/*
* If no files were given, pretend "-" was given (stdin).
*/
if (opts->argc == 0) {
opts->argv[opts->argc++] = "-";
}
if (opts->size == 0) {
pv_calc_total_size(opts);
}
if (opts->size < 1)
opts->eta = 0;
if ((isatty(STDERR_FILENO) == 0)
&& (opts->force == 0)
&& (opts->numeric == 0)) {
opts->no_op = 1;
}
if (opts->width == 0) {
int tmpheight;
tmpheight = opts->height;
pv_screensize(opts);
if (tmpheight > 0)
opts->height = tmpheight;
}
if (opts->height == 0) {
int tmpwidth;
tmpwidth = opts->width;
pv_screensize(opts);
if (tmpwidth > 0)
opts->width = tmpwidth;
}
/*
* Width and height bounds checking (and defaults).
*/
if (opts->width < 1)
opts->width = 80;
if (opts->height < 1)
opts->height = 25;
if (opts->width > 999999)
opts->width = 999999;
if (opts->height > 999999)
opts->height = 999999;
/*
* Interval must be at least 0.1 second, and at most 10 minutes.
*/
if (opts->interval < 0.1)
opts->interval = 0.1;
if (opts->interval > 600)
opts->interval = 600;
#ifdef MAKE_STDOUT_NONBLOCKING
/*
* Try and make standard output use non-blocking I/O.
*
* Note that this can cause problems with (broken) applications
* such as dd.
*/
fcntl(STDOUT_FILENO, F_SETFL,
O_NONBLOCK | fcntl(STDOUT_FILENO, F_GETFL));
#endif /* MAKE_STDOUT_NONBLOCKING */
/*
* Set terminal option TOSTOP so we get signal SIGTTOU if we try to
* write to the terminal while backgrounded.
*
* Also, save the current terminal attributes for later restoration.
*/
tcgetattr(STDERR_FILENO, &t);
t_save = t;
t.c_lflag |= TOSTOP;
tcsetattr(STDERR_FILENO, TCSANOW, &t);
opts->current_file = "(stdin)";
pv_sig_init();
remote_sig_init(opts);
retcode = pv_main_loop(opts);
opts_free(opts);
tcsetattr(STDERR_FILENO, TCSANOW, &t_save);
return retcode;
}
/* EOF */
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