change license, improve makefile, remove info manual, misc

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 0 insertions, 484 deletions

diff --git a/src/rq.c b/src/rq.c
deleted file mode 100644
index 349e6d5..0000000
--- a/src/rq.c
+++ /dev/null
@@ -1,484 +0,0 @@
-/**
- * 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 <signal.h>
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-
-#define t(...) do { if (__VA_ARGS__) goto fail; } while (0)
-
-
-
-/**
- * The default word rate.
- */
-#ifndef DEFAULT_RATE
-# define DEFAULT_RATE  120  /* 2 hz */
-#endif
-
-/**
- * Delta-value of rate increment and rate decrement.
- */
-#ifndef RATE_DELTA
-# define RATE_DELTA  10  /* 10/min */
-#endif
-
-
-
-/**
- * The a word.
- */
-struct word {
-	/**
-	 * The word.
-	 */
-	const char *word;
-
-	/**
-	 * Should reverse video be applied?
-	 */
-	int reverse_video;
-};
-
-/**
- * The name of the process.
- */
-static const char *argv0;
-
-/**
- * Have the terminal been resized?
- */
-static volatile sig_atomic_t caught_sigwinch = 1;
-
-/**
- * Has the timer expired?
- */
-static volatile sig_atomic_t caught_sigalrm = 0;
-
-/**
- * The width of the terminal.
- */
-static size_t width = 80;
-
-/**
- * The height of the terminal.
- */
-static size_t height = 30;
-
-/**
- * The number of words.
- */
-static size_t word_count = 0;
-
-/**
- * All loaded words. Refer to `word_count`
- * for the number of contained words.
- */
-static struct word *words;
-
-
-
-/**
- * Signal handler for SIGWINCH.
- * Invoked when the terminal resizes.
- */
-static void sigwinch(int signo)
-{
-	signal(signo, sigwinch);
-	caught_sigwinch = 1;
-}
-
-
-/**
- * Signal handler for SIGALRM.
- * Invoked when the timer expires.
- */
-static void sigalrm(int signo)
-{
-	signal(signo, sigalrm);
-	caught_sigalrm = 1;
-}
-
-
-/**
- * Get the size of the terminal.
- */
-static void get_terminal_size(void)
-{
-	struct winsize winsize;
-
-	if (!caught_sigwinch)
-		return;
-
-	caught_sigwinch = 0;
-
-	while (ioctl(STDOUT_FILENO, (unsigned long)TIOCGWINSZ, &winsize) < 0)
-		if (errno != EINTR)
-			return;
-
-	height = winsize.ws_row;
-	width = winsize.ws_col;
-}
-
-
-/**
- * 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;
-}
-
-
-/**
- * Count the number of character in a string.
- * 
- * Possible improvement:
- *   Figure out how many columns the terminal is
- *   likely to used to display the each character,
- *   and sum it.
- * 
- * @param   s  The string.
- * @return     The number of characters in `s`.
- */
-static size_t display_len(const char *s)
-{
-	size_t r = 0;
-	for (; *s; s++)
-		r += (((int)*s & 0xC0) != 0x80);
-	return r;
-}
-
-
-/**
- * Load the file and do some preparsing.
- * 
- * @param   fd  The file descriptor to the file, -1 to clean up instead.
- * @return      0 on success, -1 on error.
- */
-static int load_file(int fd)
-{
-	static char *buffer = NULL;
-	size_t ptr = 0;
-	size_t size = 0;
-	void *new;
-	int saved_errno;
-	char *s;
-	char *end;
-	size_t i;
-	ssize_t n;
-
-	if (fd == -1)
-		return free(buffer), 0;
-
-	/* Load file. */
-	for (;;) {
-		if (ptr == size) {
-			size = size ? (size << 1) : (8 << 10);
-			new = realloc(buffer, size);
-			t (new == NULL);
-			buffer = new;
-		}
-		n = read(fd, buffer + ptr, size - ptr);
-		if (n < 0) {
-			t (errno != EINTR);
-			continue;
-		} else if (n == 0) {
-			break;
-		}
-		ptr += (size_t)n;
-	}
-	if (buffer == NULL)
-		return 0;
-	if (ptr == size) {
-		new = realloc(buffer, size += 2);
-		t (new == NULL);
-		buffer = new;
-	}
-	buffer[ptr++] = '\0';
-	buffer[ptr++] = '\0';
-
-	/* Split words. */
-	size = 0;
-	for (s = buffer; *s; s = end + 1) {
-		if (word_count == size) {
-			size = size ? (size << 1) : 512;
-			new = realloc(words, size * sizeof(*words));
-			t (new == NULL);
-			words = new;
-		}
-		while (isspace(*s))
-			s++;
-		end = strpbrk(s, " \f\n\r\t\v");
-		if (end == NULL)
-			end = strchr(s, '\0');
-		*end = '\0';
-		words[word_count].word = s;
-		words[word_count].reverse_video = 0;
-		word_count++;
-	}
-
-	/* Figure out which words should have reverse video. */
-	for (i = 1; i < word_count; i++)
-		if (!strcmp(words[i].word, words[i - 1].word))
-			words[i].reverse_video = words[i - 1].reverse_video ^ 1;
-
-	return 0;
-fail:
-	saved_errno = errno;
-	free(buffer), buffer = NULL;
-	errno = saved_errno;
-	return -1;
-}
-
-
-/**
- * Display a file word by word.
- * 
- * @param   ttyfd  File descriptor for reading from the terminal.
- * @param   rate   The number of words per minute to display.
- * @return         0 on success, -1 on error.
- */
-static int display_file(int ttyfd, long rate)
-{
-#define SET_RATE \
-	(interval.it_value.tv_usec = 60000000L / rate, \
-	 interval.it_value.tv_sec = interval.it_value.tv_usec / 1000000L, \
-	 interval.it_value.tv_usec %= 1000000L)
-
-	ssize_t n;
-	int timer_set = 1;
-	char c;
-	size_t i;
-	struct itimerval interval;
-	memset(&interval, 0, sizeof(interval));
-
-	SET_RATE;
-	for (i = 0; i < word_count; i++) {
-		t (setitimer(ITIMER_REAL, &interval, NULL));
-	rewait:
-		n = read(ttyfd, &c, sizeof(c));
-		if (n < 0) {
-			t (errno != EINTR);
-			c = 0;
-		} else if (n == 0) {
-			break;
-		}
-		switch (c) {
-		case '+': /* plus */
-		case '-': /* hyphen */
-			rate += (c == '+' ? RATE_DELTA : -RATE_DELTA);
-			rate = (rate <= 0 ? 1 : rate);
-			SET_RATE;
-			goto rewait;
-		case 'p': /* P */
-			if (timer_set)
-				memset(&interval, 0, sizeof(interval));
-			else
-				SET_RATE;
-			t (setitimer(ITIMER_REAL, &interval, NULL));
-			timer_set ^= 1;
-			goto rewait;
-		case 'q': /* Q */
-			goto done;
-		case 'B': /* down */
-		case 'C': /* right */
-			break;
-		case 'A': /* up */
-		case 'D': /* left */
-			i = (i < 2 ? 0 : (i - 2));
-			break;
-		case 0:
-			if (!caught_sigalrm)
-				goto rewait;
-			caught_sigalrm = 0;
-			break;
-		default:
-			goto rewait;
-		}
-
-		get_terminal_size();
-		t (fprintf(stdout, "\033[H\033[2J\033[%zu;%zuH%s%s%s",
-			   (height + 1) / 2,
-			   (width - display_len(words[i].word)) / 2 + 1,
-			   words[i].reverse_video ? "\033[7m" : "",
-			   words[i].word,
-			   words[i].reverse_video ? "\033[27m" : "") < 0);
-		t (fflush(stdout));
-	}
-
-	t (setitimer(ITIMER_REAL, &interval, NULL));
-	(void) read(ttyfd, &c, sizeof(c));
-
-done:
-	return 0;
-
-fail:
-	return -1;
-}
-
-
-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);
-	}
-
-	/* Load file. */
-	t (load_file(fd));
-
-	/* We do not need the file anymore. */
-	close(fd), 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;
-
-	/* Display file. */
-	signal(SIGALRM, sigalrm);
-	signal(SIGWINCH, sigwinch);
-	t (display_file(ttyfd, rate));
-
-	/* Restore terminal configurations. */
-	tcsetattr(ttyfd, TCSAFLUSH, &saved_stty);
-	fprintf(stdout, "\033[?25h\033[?1049l");
-	fflush(stdout);
-	tty_configured = 0;
-
-	free(words);
-	load_file(-1);
-	close(ttyfd);
-	return 0;
-
-fail:
-	perror(argv0);
-	free(words);
-	load_file(-1);
-	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 rq'.\n", argv0);
-	return 2;
-}
-