diff options
Diffstat (limited to '')
| -rw-r--r-- | .gitignore | 14 | ||||
| -rw-r--r-- | LICENSE | 31 | ||||
| -rw-r--r-- | Makefile | 160 | ||||
| -rw-r--r-- | README | 1 | ||||
| -rw-r--r-- | TODO | 12 | ||||
| -rw-r--r-- | config.mk | 8 | ||||
| -rw-r--r-- | doc/info/fdl.texinfo | 505 | ||||
| -rw-r--r-- | doc/info/rq.texinfo | 143 | ||||
| -rw-r--r-- | rq.1 (renamed from doc/man/rq.1) | 55 | ||||
| -rw-r--r-- | rq.c (renamed from src/rq.c) | 197 |
10 files changed, 175 insertions, 951 deletions
@@ -1,16 +1,6 @@ -_/ -/bin/ -/obj/ -\#*\# +*\#* .* -!.git* *~ -*.bak -*.new -*.swo -*.swp -*.out *.o *.su -*.gch - +/rq @@ -1,22 +1,15 @@ -MIT/X Consortium License +ISC License -Copyright © 2015 Mattias Andrée <maandree@member.fsf.org> +© 2015, 2021 Mattias Andrée <maandree@kth.se> -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. +Permission to use, copy, modify, and/or distribute this software for any +purpose with or without fee is hereby granted, provided that the above +copyright notice and this permission notice appear in all copies. +THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES +WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF +MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR +ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES +WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN +ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF +OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. @@ -1,150 +1,30 @@ -# Copying and distribution of this file, with or without modification, -# are permitted in any medium without royalty provided the copyright -# notice and this notice are preserved. This file is offered as-is, -# without any warranty. +.PHONY: -PREFIX = /usr -BIN = /bin -DATA = /share -BINDIR = $(PREFIX)$(BIN) -DATADIR = $(PREFIX)$(DATA) -DOCDIR = $(DATADIR)/doc -INFODIR = $(DATADIR)/info -MANDIR = $(DATADIR)/man -MAN1DIR = $(MANDIR)/man1 -LICENSEDIR = $(DATADIR)/licenses +CONFIGFILE = config.mk +include $(CONFIGFILE) -PKGNAME = rq -COMMAND = rq +all: rq -OPTIMISE = -O2 -WARN = -Wall -Wextra -pedantic -FLAGS = -std=c99 $(WARN) $(OPTIMISE) +rq: rq.o + $(CC) -o $@ $@.o $(LDFLAGS) +.c.o: + $(CC) -c -o $@ $< $(CFLAGS) $(CPPFLAGS) +install: rq + mkdir -p -- "$(DESTDIR)$(PREFIX)/bin" + mkdir -p -- "$(DESTDIR)$(MANPREFIX)/man1" + cp -- rq "$(DESTDIR)$(PREFIX)/bin/$(COMMAND)" + cp -- rq.1 "$(DESTDIR)$(MANPREFIX)/man1/$(COMMAND).1" -.PHONY: default -default: base info - -.PHONY: all -all: base doc - -.PHONY: bas -base: cmd - -.PHONY: command -cmd: bin/rq - -bin/rq: obj/rq.o - @mkdir -p bin - ${CC} ${FLAGS} -o $@ $^ ${LDFLAGS} - -obj/%.o: src/%.c - mkdir -p obj - ${CC} ${FLAGS} -c -o $@ ${CPPFLAGS} ${CFLAGS} $< - -.PHONY: doc -doc: info pdf dvi ps - -.PHONY: info -info: bin/rq.info -bin/%.info: doc/info/%.texinfo - @mkdir -p bin - $(MAKEINFO) $< - mv $*.info $@ - -.PHONY: pdf -pdf: bin/rq.pdf -bin/%.pdf: doc/info/%.texinfo - @! test -d obj/pdf || rm -rf obj/pdf - @mkdir -p bin obj/pdf - cd obj/pdf && texi2pdf ../../"$<" < /dev/null - mv obj/pdf/$*.pdf $@ - -.PHONY: dvi -dvi: bin/rq.dvi -bin/%.dvi: doc/info/%.texinfo - @! test -d obj/dvi || rm -rf obj/dvi - @mkdir -p bin obj/dvi - cd obj/dvi && $(TEXI2DVI) ../../"$<" < /dev/null - mv obj/dvi/$*.dvi $@ - -.PHONY: ps -ps: bin/rq.ps -bin/%.ps: doc/info/%.texinfo - @! test -d obj/ps || rm -rf obj/ps - @mkdir -p bin obj/ps - cd obj/ps && texi2pdf --ps ../../"$<" < /dev/null - mv obj/ps/$*.ps $@ - - - -.PHONY: install -install: install-base install-info install-man - -.PHONY: install-all -install-all: install-base install-doc - -.PHONY: install-base -install-base: install-cmd install-copyright - -.PHONY: install-cmd -install-cmd: bin/rq - install -dm755 -- "$(DESTDIR)$(BINDIR)" - install -m755 $< -- "$(DESTDIR)$(BINDIR)/$(COMMAND)" - -.PHONY: install-copyright -install-copyright: install-license - -.PHONY: install-license -install-license: - install -dm755 -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - install -m644 LICENSE -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - -.PHONY: install-doc -install-doc: install-info install-pdf install-dvi install-ps install-man - -.PHONY: install-info -install-info: bin/rq.info - install -dm755 -- "$(DESTDIR)$(INFODIR)" - install -m644 $< -- "$(DESTDIR)$(INFODIR)/$(PKGNAME).info" - -.PHONY: install-pdf -install-pdf: bin/rq.pdf - install -dm755 -- "$(DESTDIR)$(DOCDIR)" - install -m644 -- "$<" "$(DESTDIR)$(DOCDIR)/$(PKGNAME).pdf" - -.PHONY: install-dvi -install-dvi: bin/rq.dvi - install -dm755 -- "$(DESTDIR)$(DOCDIR)" - install -m644 -- "$<" "$(DESTDIR)$(DOCDIR)/$(PKGNAME).dvi" - -.PHONY: install-ps -install-ps: bin/rq.ps - install -dm755 -- "$(DESTDIR)$(DOCDIR)" - install -m644 -- "$<" "$(DESTDIR)$(DOCDIR)/$(PKGNAME).ps" - -.PHONY: install-man -install-man: doc/man/rq.1 - install -dm755 -- "$(DESTDIR)$(MAN1DIR)" - install -m644 "$<" -- "$(DESTDIR)$(MAN1DIR)/$(COMMAND).1" - - - -.PHONY: uninstall uninstall: - -rm -- "$(DESTDIR)$(BINDIR)/$(COMMAND)" - -rm -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/LICENSE" - -rmdir -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - -rm -- "$(DESTDIR)$(INFODIR)/$(PKGNAME).info" - -rm -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).pdf" - -rm -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).dvi" - -rm -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).ps" - -rm -- "$(DESTDIR)$(MAN1DIR)/$(COMMAND).1" + -rm -f -- "$(DESTDIR)$(PREFIX)/$(COMMAND)" + -rm -f -- "$(DESTDIR)$(MANPREFIX)/man1/$(COMMAND).1" - - -.PHONY: clean clean: - -rm -r bin obj + -rm -rf -- rq *.o + +.SUFFIXES: +.SUFFIXES: .o .c +.PHONY: all install uninstall clean @@ -65,4 +65,3 @@ SEE ALSO No similar or otherwise related work known. Please inform me if you know any. There probably is a bunch. - @@ -1,7 +1,5 @@ -The text shall not be centred. Rather, the position -that is to be centred is the position where it reader -is most likely to recognised the word quickest when -focusing there. This point should be highlighted. -Determining this position requires a dictionary to -be processed. - +The text shall not be centred. Rather, the position that is +to be centred is the position where it reader is most likely +to recognised the word quickest when focusing there. This +point should be highlighted. Determining this position +requires a dictionary to be processed. diff --git a/config.mk b/config.mk new file mode 100644 index 0000000..7997417 --- /dev/null +++ b/config.mk @@ -0,0 +1,8 @@ +PREFIX = /usr +MANPREFIX = $(PREFIX)/share/man + +CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700 +CFLAGS = -std=c99 -O2 -Wall -pedantic +LDFLAGS = -s + +COMMAND = rq diff --git a/doc/info/fdl.texinfo b/doc/info/fdl.texinfo deleted file mode 100644 index cb71f05..0000000 --- a/doc/info/fdl.texinfo +++ /dev/null @@ -1,505 +0,0 @@ -@c The GNU Free Documentation License. -@center Version 1.3, 3 November 2008 - -@c This file is intended to be included within another document, -@c hence no sectioning command or @node. - -@display -Copyright @copyright{} 2000, 2001, 2002, 2007, 2008 Free Software Foundation, Inc. -@uref{http://fsf.org/} - -Everyone is permitted to copy and distribute verbatim copies -of this license document, but changing it is not allowed. -@end display - -@enumerate 0 -@item -PREAMBLE - -The purpose of this License is to make a manual, textbook, or other -functional and useful document @dfn{free} in the sense of freedom: to -assure everyone the effective freedom to copy and redistribute it, -with or without modifying it, either commercially or noncommercially. -Secondarily, this License preserves for the author and publisher a way -to get credit for their work, while not being considered responsible -for modifications made by others. - -This License is a kind of ``copyleft'', which means that derivative -works of the document must themselves be free in the same sense. It -complements the GNU General Public License, which is a copyleft -license designed for free software. - -We have designed this License in order to use it for manuals for free -software, because free software needs free documentation: a free -program should come with manuals providing the same freedoms that the -software does. But this License is not limited to software manuals; -it can be used for any textual work, regardless of subject matter or -whether it is published as a printed book. We recommend this License -principally for works whose purpose is instruction or reference. - -@item -APPLICABILITY AND DEFINITIONS - -This License applies to any manual or other work, in any medium, that -contains a notice placed by the copyright holder saying it can be -distributed under the terms of this License. Such a notice grants a -world-wide, royalty-free license, unlimited in duration, to use that -work under the conditions stated herein. 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A copy of the license is included in the section entitled ``GNU - Free Documentation License''. -@end group -@end smallexample - -If you have Invariant Sections, Front-Cover Texts and Back-Cover Texts, -replace the ``with@dots{}Texts.''@: line with this: - -@smallexample -@group - with the Invariant Sections being @var{list their titles}, with - the Front-Cover Texts being @var{list}, and with the Back-Cover Texts - being @var{list}. -@end group -@end smallexample - -If you have Invariant Sections without Cover Texts, or some other -combination of the three, merge those two alternatives to suit the -situation. - -If your document contains nontrivial examples of program code, we -recommend releasing these examples in parallel under your choice of -free software license, such as the GNU General Public License, -to permit their use in free software. - -@c Local Variables: -@c ispell-local-pdict: "ispell-dict" -@c End: diff --git a/doc/info/rq.texinfo b/doc/info/rq.texinfo deleted file mode 100644 index de34eed..0000000 --- a/doc/info/rq.texinfo +++ /dev/null @@ -1,143 +0,0 @@ -\input texinfo @c -*-texinfo-*- - -@c %**start of header -@setfilename rq.info -@settitle rq -@afourpaper -@documentencoding UTF-8 -@documentlanguage en -@finalout -@c %**end of header - - -@dircategory Pagers -@direntry -* rq: (rq). Read quickly -@end direntry - - -@copying -Copyright @copyright{} 2015 Mattias Andrée - -@quotation -Permission is granted to copy, distribute and/or modify this document -under the terms of the GNU Free Documentation License, Version 1.3 or -any later version published by the Free Software Foundation; with no -Invariant Sections, with no Front-Cover Texts, and with no Back-Cover -Texts. A copy of the license is included in the section entitled -``GNU Free Documentation License''. -@end quotation -@end copying - -@ifnottex -@node Top -@top rq -- Read quickly -@insertcopying -@end ifnottex - -@titlepage -@title rq -@subtitle Read quickly -@author by Mattias Andrée (maandree) - -@page -@vskip 0pt plus 1filll -@insertcopying -@page -@end titlepage - -@contents - - - -@menu -* Overview:: Brief overview of @command{rq}. -* Invoking:: Invocation of @command{rq}. -* Commands:: Interacting with @command{rq}. -* GNU Free Documentation License:: Copying and sharing this manual. -@end menu - - - -@node Overview -@chapter Overview - -@command{rq} displays a plain-text word-by-word in the middle -of the terminal. Words are automatically paged in a -specifiable rate, by default 2 words per second. -This is a bit slow, you should turn it up when -gradually until your performance has been optimised. -Repeated words will be indicated by alternating reverse -video highlighting. - -Escape sequences are printed as-is. - -@command{rq} uses a method called rapid serial visual -presentation. - - - -@node Invoking -@chapter Invoking - -@command{rq} optionally takes the name of the file to -display. If the file has been specified, or if @code{-} -is specified, stdin will be display. - -@command{rq} does not recognise any options. - -The word rate is configured via the environment -variable @env{RQ_RATE}. It should be a positive -integer optionally followed by a unit. If no unit -is specified, words per minute will be used. -Valid units are (case-insensitive): - -@table @code -@item wpm -@itemx w/m -@itemx /m -@itemx wpmin -@itemx w/min -@itemx /min -Words per minute. -@item wpsec -@itemx w/sec -@itemx /sec -@itemx wps -@itemx w/s -@itemx /s -@itemx Hz -Words per second. -@end table - - - -@node Commands -@chapter Commands - -@command{rq} responds to the following keys: -@table @kbd -@item + -Increase word rate. -@item - -Decrease word rate. -@item p -Toggle pause. -@item right -@itemx down -Go to the previous word. -@item left -@itemx up -Go to next previous word. -@item q -Exit. -@end table - - - -@node GNU Free Documentation License -@appendix GNU Free Documentation License -@include fdl.texinfo - -@bye - @@ -3,7 +3,7 @@ rq \- read quickly .SH SYNOPSIS .B rq -.RI [ FILE ] +.RI [ file ] .SH DESCRIPTION Displays a plain-text file word-by-word in the middle of the terminal. Words are automatically paged in a @@ -33,22 +33,37 @@ This should a positive integer, optionally followed by a unit. If no unit is specified, words per minute will be used. Valid units are (case-insensitive): -.nf -.PP -.B \ \ \ \ \ \ \ wpm -.B \ \ \ \ \ \ \ w/m -.B \ \ \ \ \ \ \ m -.B \ \ \ \ \ \ \ wpmin -.B \ \ \ \ \ \ \ w/min -.BR \ \ \ \ \ \ \ /min\ \ \ \ Words\ per\ minute. +.RS 14 +.TP +.B wpm +.TQ +.B w/m +.TQ +.B m +.TQ +.B wpmin +.TQ +.B w/min +.TQ +.B /min +Words per minute. .PP -.B \ \ \ \ \ \ \ wpsec -.B \ \ \ \ \ \ \ w/sec -.B \ \ \ \ \ \ \ /sec -.B \ \ \ \ \ \ \ wps -.B \ \ \ \ \ \ \ w/s -.B \ \ \ \ \ \ \ /s -.BR \ \ \ \ \ \ \ Hz\ \ \ \ \ \ Words\ per\ second. +.TP +.B wpsec +.TQ +.B w/sec +.TQ +.B sec +.TQ +.B wps +.TQ +.B w/s +.TQ +.B /s +.TQ +.B Hz +Words per second. +.Re .fi .SH COMMANDS .TP @@ -75,11 +90,3 @@ This should be obvious. No similar or otherwise related work known. Please inform me if you know any. There probably is a bunch. -.SH AUTHORS -Principal author, Mattias Andrée. See the LICENSE file for the full -list of authors. -.SH LICENSE -MIT/X Consortium License. -.SH BUGS -Please report bugs to https://github.com/maandree/rq/issues or to -maandree@member.fsf.org @@ -1,41 +1,17 @@ -/** - * 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. - */ +/* 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 <signal.h> #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) +#include <unistd.h> @@ -112,10 +88,11 @@ static struct word *words; * Signal handler for SIGWINCH. * Invoked when the terminal resizes. */ -static void sigwinch(int signo) +static void +sigwinch(int signo) { - signal(signo, sigwinch); caught_sigwinch = 1; + (void) signo; } @@ -123,17 +100,19 @@ static void sigwinch(int signo) * Signal handler for SIGALRM. * Invoked when the timer expires. */ -static void sigalrm(int signo) +static void +sigalrm(int signo) { - signal(signo, sigalrm); caught_sigalrm = 1; + (void) signo; } /** * Get the size of the terminal. */ -static void get_terminal_size(void) +static void +get_terminal_size(void) { struct winsize winsize; @@ -157,10 +136,10 @@ static void get_terminal_size(void) * * @return The rate in words per minute. */ -static long get_word_rate(void) +static long +get_word_rate(void) { - char *s; - char *e; + char *s, *e; long r; errno = 0; @@ -206,7 +185,8 @@ static long get_word_rate(void) * @param s The string. * @return The number of characters in `s`. */ -static size_t display_len(const char *s) +static size_t +display_len(const char *s) { size_t r = 0; for (; *s; s++) @@ -221,7 +201,8 @@ static size_t display_len(const char *s) * @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 int +load_file(int fd) { static char *buffer = NULL; size_t ptr = 0; @@ -241,12 +222,14 @@ static int load_file(int fd) if (ptr == size) { size = size ? (size << 1) : (8 << 10); new = realloc(buffer, size); - t (new == NULL); + if (!new) + goto fail; buffer = new; } n = read(fd, buffer + ptr, size - ptr); if (n < 0) { - t (errno != EINTR); + if (errno != EINTR) + goto fail; continue; } else if (n == 0) { break; @@ -257,7 +240,8 @@ static int load_file(int fd) return 0; if (ptr == size) { new = realloc(buffer, size += 2); - t (new == NULL); + if (!new) + goto fail; buffer = new; } buffer[ptr++] = '\0'; @@ -269,7 +253,8 @@ static int load_file(int fd) if (word_count == size) { size = size ? (size << 1) : 512; new = realloc(words, size * sizeof(*words)); - t (new == NULL); + if (!new) + goto fail; words = new; } while (isspace(*s)) @@ -289,6 +274,7 @@ static int load_file(int fd) words[i].reverse_video = words[i - 1].reverse_video ^ 1; return 0; + fail: saved_errno = errno; free(buffer), buffer = NULL; @@ -304,7 +290,8 @@ fail: * @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) +static int +display_file(int ttyfd, long rate) { #define SET_RATE \ (interval.it_value.tv_usec = 60000000L / rate, \ @@ -316,15 +303,18 @@ static int display_file(int ttyfd, long rate) 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)); + if (setitimer(ITIMER_REAL, &interval, NULL)) + goto fail; rewait: n = read(ttyfd, &c, sizeof(c)); if (n < 0) { - t (errno != EINTR); + if (errno != EINTR) + goto fail; c = 0; } else if (n == 0) { break; @@ -332,8 +322,8 @@ static int display_file(int ttyfd, long rate) switch (c) { case '+': /* plus */ case '-': /* hyphen */ - rate += (c == '+' ? RATE_DELTA : -RATE_DELTA); - rate = (rate <= 0 ? 1 : rate); + rate += c == '+' ? RATE_DELTA : -RATE_DELTA; + rate = rate <= 0 ? 1 : rate; SET_RATE; goto rewait; case 'p': /* P */ @@ -341,7 +331,8 @@ static int display_file(int ttyfd, long rate) memset(&interval, 0, sizeof(interval)); else SET_RATE; - t (setitimer(ITIMER_REAL, &interval, NULL)); + if (setitimer(ITIMER_REAL, &interval, NULL)) + goto fail; timer_set ^= 1; goto rewait; case 'q': /* Q */ @@ -351,7 +342,7 @@ static int display_file(int ttyfd, long rate) break; case 'A': /* up */ case 'D': /* left */ - i = (i < 2 ? 0 : (i - 2)); + i = i < 2 ? 0 : i - 2; break; case 0: if (!caught_sigalrm) @@ -363,16 +354,19 @@ static int display_file(int ttyfd, long rate) } 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)); + 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; } - t (setitimer(ITIMER_REAL, &interval, NULL)); + if (setitimer(ITIMER_REAL, &interval, NULL)) + goto fail; (void) read(ttyfd, &c, sizeof(c)); done: @@ -383,73 +377,77 @@ fail: } -int main(int argc, char *argv[]) +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 termios stty, saved_stty; struct stat _attr; - - /* Check that we have a stdout. */ - if (fstat(STDOUT_FILENO, &_attr)) - t (errno == EBADF); + struct sigaction sa; /* 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++; + 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 (!file || !strcmp(file, "-")) { fd = STDIN_FILENO; } else { fd = open(file, O_RDONLY); - t (fd == -1); + if (fd < 0) + goto fail; } /* Load file. */ - t (load_file(fd)); + if (load_file(fd)) + goto fail; /* We do not need the file anymore. */ - close(fd), fd = -1; + close(fd); + fd = -1; /* Get a readable file descriptor for the controlling terminal. */ ttyfd = open("/dev/tty", O_RDONLY); - t (ttyfd == -1); + if (ttyfd < 0) + goto fail; /* Configure terminal. */ - t (fprintf(stdout, "\033[?1049h\033[?25l") < 0); - t (fflush(stdout)); - t (tcgetattr(ttyfd, &stty)); + 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); - t (tcsetattr(ttyfd, TCSAFLUSH, &stty)); + if (tcsetattr(ttyfd, TCSAFLUSH, &stty)) + goto fail; tty_configured = 1; /* Display file. */ - signal(SIGALRM, sigalrm); - signal(SIGWINCH, sigwinch); - t (display_file(ttyfd, rate)); + 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); @@ -478,7 +476,6 @@ fail: return 1; usage: - fprintf(stderr, "%s: Invalid arguments, see `man 1 rq'.\n", argv0); - return 2; + fprintf(stderr, "usage: %s [file].\n", argv0); + return 1; } - |