/**
* MIT/X Consortium License
*
* Copyright © 2015 Mattias Andrée <maandree@member.fsf.org>
*
* 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.
*/
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <string.h>
#include <strings.h>
#include <errno.h>
#include <unistd.h>
#include <fcntl.h>
#include <termios.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#define t(...) do { if (__VA_ARGS__) goto fail; } while (0)
/**
* The default word rate.
*/
#define DEFAULT_RATE 120 /* 2 hz */
/**
* The name of the process.
*/
static const char *argv0;
/**
* Get the selected word rate by reading
* the environment variable RQ_RATE.
*
* @return The rate in words per minute.
*/
static long get_word_rate(void)
{
char *s;
char *e;
long r;
errno = 0;
s = getenv("RQ_RATE");
if (!s || !*s || !isdigit(*s))
return DEFAULT_RATE;
r = strtol(s, &e, 10);
if (r <= 0)
return DEFAULT_RATE;
while (*e == ' ')
e++;
if (!*e) r *= 1;
else if (!strcasecmp(e, "wpm")) r *= 1;
else if (!strcasecmp(e, "w/m")) r *= 1;
else if (!strcasecmp(e, "/m")) r *= 1;
else if (!strcasecmp(e, "wpmin")) r *= 1;
else if (!strcasecmp(e, "w/min")) r *= 1;
else if (!strcasecmp(e, "/min")) r *= 1;
else if (!strcasecmp(e, "wps")) r *= 60;
else if (!strcasecmp(e, "w/s")) r *= 60;
else if (!strcasecmp(e, "/s")) r *= 60;
else if (!strcasecmp(e, "wpsec")) r *= 60;
else if (!strcasecmp(e, "w/sec")) r *= 60;
else if (!strcasecmp(e, "/sec")) r *= 60;
else if (!strcasecmp(e, "hz")) r *= 60;
else
return DEFAULT_RATE;
return r;
}
int main(int argc, char *argv[])
{
int dashed = 0;
long rate = get_word_rate();
char *file = NULL;
char *arg;
int fd = -1, ttyfd = -1, tty_configured = 0;
struct termios stty;
struct termios saved_stty;
struct stat _attr;
/* Check that we have a stdout. */
if (fstat(STDOUT_FILENO, &_attr))
t (errno == EBADF);
/* Parse arguments. */
argv0 = argv ? (argc--, *argv++) : "rq";
while (argc) {
if (!dashed && !strcmp(*argv, "--")) {
dashed = 1;
argv++;
argc--;
} else if (!dashed && **argv == '-') {
arg = *argv++;
argc--;
for (arg++; *arg; arg++) {
goto usage;
}
} else {
if (file)
goto usage;
file = *argv++;
argc--;
}
}
/* Open file. */
if (!file || !strcmp(file, "-")) {
fd = STDIN_FILENO;
} else {
fd = open(file, O_RDONLY);
t (fd == -1);
}
/* Get a readable file descriptor for the controlling terminal. */
ttyfd = open("/dev/tty", O_RDONLY);
t (ttyfd == -1);
/* Configure terminal. */
t (fprintf(stdout, "\033[?1049h\033[?25l") < 0);
t (fflush(stdout));
t (tcgetattr(ttyfd, &stty));
saved_stty = stty;
stty.c_lflag &= (tcflag_t)~(ICANON | ECHO | ISIG);
t (tcsetattr(ttyfd, TCSAFLUSH, &stty));
tty_configured = 1;
/* TODO Display file. */
/* Restore terminal configurations. */
tcsetattr(ttyfd, TCSAFLUSH, &saved_stty);
fprintf(stdout, "\033[?25h\033[?1049l");
fflush(stdout);
tty_configured = 0;
close(fd);
close(ttyfd);
return 0;
fail:
perror(argv0);
if (tty_configured) {
tcsetattr(ttyfd, TCSAFLUSH, &saved_stty);
fprintf(stdout, "\033[?25h\033[?1049l");
fflush(stdout);
}
if (fd >= 0)
close(fd);
if (ttyfd >= 0)
close(ttyfd);
return 1;
usage:
fprintf(stderr, "%s: Invalid arguments, see `man 1 rp'.\n", argv0);
return 2;
}
