Rename to read-quickly2.0

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

1 files changed, 0 insertions, 482 deletions

diff --git a/rq.c b/rq.c
deleted file mode 100644
index fbcec13..0000000
--- a/rq.c
+++ /dev/null
@@ -1,482 +0,0 @@
-/* See LICENSE file for copyright and license details. */
-#include <sys/ioctl.h>
-#include <sys/stat.h>
-#include <sys/time.h>
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <limits.h>
-#include <signal.h>
-#include <stdint.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <strings.h>
-#include <termios.h>
-#include <unistd.h>
-#include <wchar.h>
-
-
-
-/**
- * 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)
-{
-	caught_sigwinch = 1;
-	(void) signo;
-}
-
-
-/**
- * Signal handler for SIGALRM.
- * Invoked when the timer expires.
- */
-static void
-sigalrm(int signo)
-{
-	caught_sigalrm = 1;
-	(void) signo;
-}
-
-
-/**
- * Get the size of the terminal.
- */
-static void
-get_terminal_size(void)
-{
-	struct winsize winsize;
-	if (caught_sigwinch) {
-		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;
-	long r;
-
-	errno = 0;
-	s = getenv("RQ_RATE");
-	if (!s || !*s || !isdigit(*s))
-		return DEFAULT_RATE;
-
-	r = strtol(s, &s, 10);
-	if (r <= 0)
-		return DEFAULT_RATE;
-	while (*s == ' ')
-		s++;
-
-	if      (!*s)                      r *= 1;
-	else if (!strcasecmp(s, "wpm"))    r *= 1;
-	else if (!strcasecmp(s, "w/m"))    r *= 1;
-	else if (!strcasecmp(s, "/m"))     r *= 1;
-	else if (!strcasecmp(s, "wpmin"))  r *= 1;
-	else if (!strcasecmp(s, "w/min"))  r *= 1;
-	else if (!strcasecmp(s, "/min"))   r *= 1;
-	else if (!strcasecmp(s, "wps"))    r *= 60;
-	else if (!strcasecmp(s, "w/s"))    r *= 60;
-	else if (!strcasecmp(s, "/s"))     r *= 60;
-	else if (!strcasecmp(s, "wpsec"))  r *= 60;
-	else if (!strcasecmp(s, "w/sec"))  r *= 60;
-	else if (!strcasecmp(s, "/sec"))   r *= 60;
-	else if (!strcasecmp(s, "hz"))     r *= 60;
-	else
-		return DEFAULT_RATE;
-
-	return r;
-}
-
-
-/**
- * Count the number of character in a string.
- * 
- * @param   s  The string.
- * @return     The number of characters in `s`.
- */
-static size_t
-display_len(const char *s)
-{
-	size_t r = 0;
-	wchar_t wc;
-	int len, w;
-	for (; *s; s += len) {
-		len = mbtowc(&wc, s, SIZE_MAX);
-		if (len <= 0)
-			break;
-		w = wcwidth(wc);
-		if (w < 0)
-			break;
-		r += (size_t)w;
-	}
-	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);
-			if (!new)
-				goto fail;
-			buffer = new;
-		}
-		n = read(fd, buffer + ptr, size - ptr);
-		if (n <= 0) {
-			if (!n)
-				break;
-			if (errno == EINTR)
-				continue;
-			goto fail;
-		}
-		ptr += (size_t)n;
-	}
-	if (!buffer)
-		return 0;
-	new = realloc(buffer, ptr + 2);
-	if (!new)
-		goto fail;
-	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));
-			if (!new)
-				goto fail;
-			words = new;
-		}
-		while (isspace(*s))
-			s++;
-		end = strpbrk(s, " \f\n\r\t\v");
-		if (!end)
-			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++) {
-		if (setitimer(ITIMER_REAL, &interval, NULL))
-			goto fail;
-	rewait:
-		n = read(ttyfd, &c, sizeof(c));
-		if (n < 0) {
-			if (errno != EINTR)
-				goto fail;
-			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;
-			if (setitimer(ITIMER_REAL, &interval, NULL))
-				goto fail;
-			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();
-		if (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)
-			goto fail;
-		if (fflush(stdout))
-			goto fail;
-	}
-
-	if (setitimer(ITIMER_REAL, &interval, NULL))
-		goto fail;
-	(void) read(ttyfd, &c, sizeof(c));
-
-done:
-	return 0;
-
-fail:
-	return -1;
-}
-
-
-int
-main(int argc, char *argv[])
-{
-	long rate = get_word_rate();
-	int fd = -1, ttyfd = -1, tty_configured = 0;
-	struct termios stty, saved_stty;
-	struct stat _attr;
-	struct sigaction sa;
-
-	/* Parse arguments. */
-	argv0 = argv ? (argc--, *argv++) : "rq";
-	if (argc && argv[0][0] == '-') {
-		if (argv[0][1] == '-' && !argv[0][2]) {
-			argc--;
-			argv++;
-		} else if (argv[0][1]) {
-			goto usage;
-		}
-	}
-	if (argc > 1)
-		goto usage;
-
-	/* Check that we have a stdout. */
-	if (fstat(STDOUT_FILENO, &_attr))
-		if (errno == EBADF)
-			goto fail;
-
-	/* Open file. */
-	if (argc && strcmp(*argv, "-")) {
-		fd = open(*argv, O_RDONLY);
-		if (fd < 0)
-			goto fail;
-	} else {
-		fd = STDIN_FILENO;
-	}
-
-	/* Load file. */
-	if (load_file(fd))
-		goto fail;
-
-	/* 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);
-	if (ttyfd < 0)
-		goto fail;
-
-	/* Configure terminal. */
-	if (fprintf(stdout, "\033[?1049h\033[?25l") < 0)
-		goto fail;
-	if (fflush(stdout))
-		goto fail;
-	if (tcgetattr(ttyfd, &stty))
-		goto fail;
-	saved_stty = stty;
-	stty.c_lflag &= (tcflag_t)~(ICANON | ECHO | ISIG);
-	if (tcsetattr(ttyfd, TCSAFLUSH, &stty))
-		goto fail;
-	tty_configured = 1;
-
-	/* Display file. */
-	memset(&sa, 0, sizeof(sa));
-	sa.sa_handler = sigalrm;
-	sigaction(SIGALRM, &sa, NULL);
-	sa.sa_handler = sigwinch;
-	sigaction(SIGWINCH, &sa, NULL);
-	if (display_file(ttyfd, rate))
-		goto fail;
-
-	/* 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, "usage: %s [file].\n", argv0);
-	return 1;
-}