From b266bd971ea01d4361176dcce9273711844df73d Mon Sep 17 00:00:00 2001 From: Mattias Andrée Date: Sun, 21 Feb 2021 01:23:38 +0100 Subject: change license, improve makefile, remove info manual, misc MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Signed-off-by: Mattias Andrée --- .gitignore | 14 +- LICENSE | 31 ++-- Makefile | 160 ++-------------- README | 1 - TODO | 12 +- config.mk | 8 + doc/info/fdl.texinfo | 505 --------------------------------------------------- doc/info/rq.texinfo | 143 --------------- doc/man/rq.1 | 85 --------- rq.1 | 92 ++++++++++ rq.c | 481 ++++++++++++++++++++++++++++++++++++++++++++++++ src/rq.c | 484 ------------------------------------------------ 12 files changed, 620 insertions(+), 1396 deletions(-) create mode 100644 config.mk delete mode 100644 doc/info/fdl.texinfo delete mode 100644 doc/info/rq.texinfo delete mode 100644 doc/man/rq.1 create mode 100644 rq.1 create mode 100644 rq.c delete mode 100644 src/rq.c diff --git a/.gitignore b/.gitignore index 3be48fa..5347c08 100644 --- a/.gitignore +++ b/.gitignore @@ -1,16 +1,6 @@ -_/ -/bin/ -/obj/ -\#*\# +*\#* .* -!.git* *~ -*.bak -*.new -*.swo -*.swp -*.out *.o *.su -*.gch - +/rq diff --git a/LICENSE b/LICENSE index b253b5b..f8472d1 100644 --- a/LICENSE +++ b/LICENSE @@ -1,22 +1,15 @@ -MIT/X Consortium License +ISC License -Copyright © 2015 Mattias Andrée +© 2015, 2021 Mattias Andrée -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. diff --git a/Makefile b/Makefile index 5dc0ed8..eedff0a 100644 --- a/Makefile +++ b/Makefile @@ -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 diff --git a/README b/README index 8a29efa..0208765 100644 --- a/README +++ b/README @@ -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. - diff --git a/TODO b/TODO index 7ad8c44..c50c828 100644 --- a/TODO +++ b/TODO @@ -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. 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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 - diff --git a/doc/man/rq.1 b/doc/man/rq.1 deleted file mode 100644 index 9c7d087..0000000 --- a/doc/man/rq.1 +++ /dev/null @@ -1,85 +0,0 @@ -.TH RQ 1 RQ -.SH NAME -rq \- read quickly -.SH SYNOPSIS -.B rq -.RI [ FILE ] -.SH DESCRIPTION -Displays a plain-text file 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. -.PP -Escape sequences are printed as-is. -.PP -If no file is specified, or if \- i specified, -stdin will be paged. -.PP -.B rq -uses a method called rapid serial visual presentation. -.SH OPTIONS -None. -.SH ENVIRONMENT -.TP -.B RQ_RATE -The rate at which the words will be printed. -Defaults to 120 words per minute. -.br -.br -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. -.PP -.B \ \ \ \ \ \ \ wpsec -.B \ \ \ \ \ \ \ w/sec -.B \ \ \ \ \ \ \ /sec -.B \ \ \ \ \ \ \ wps -.B \ \ \ \ \ \ \ w/s -.B \ \ \ \ \ \ \ /s -.BR \ \ \ \ \ \ \ Hz\ \ \ \ \ \ Words\ per\ second. -.fi -.SH COMMANDS -.TP -.B \+ -Increase word rate. -.TP -.B \- -Decrease word rate. -.TP -.B p -Pause/resume. -.TP -.B q -Exit. -.TP -.BR left ,\ up -Go to the previous word. -.TP -.BR right ,\ down -Go to next previous word. -.SH RATIONALE -This should be obvious. -.SH SEE ALSO -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 diff --git a/rq.1 b/rq.1 new file mode 100644 index 0000000..86298dc --- /dev/null +++ b/rq.1 @@ -0,0 +1,92 @@ +.TH RQ 1 RQ +.SH NAME +rq \- read quickly +.SH SYNOPSIS +.B rq +.RI [ file ] +.SH DESCRIPTION +Displays a plain-text file 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. +.PP +Escape sequences are printed as-is. +.PP +If no file is specified, or if \- i specified, +stdin will be paged. +.PP +.B rq +uses a method called rapid serial visual presentation. +.SH OPTIONS +None. +.SH ENVIRONMENT +.TP +.B RQ_RATE +The rate at which the words will be printed. +Defaults to 120 words per minute. +.br +.br +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): +.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 +.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 +.B \+ +Increase word rate. +.TP +.B \- +Decrease word rate. +.TP +.B p +Pause/resume. +.TP +.B q +Exit. +.TP +.BR left ,\ up +Go to the previous word. +.TP +.BR right ,\ down +Go to next previous word. +.SH RATIONALE +This should be obvious. +.SH SEE ALSO +No similar or otherwise related work known. +Please inform me if you know any. There probably +is a bunch. diff --git a/rq.c b/rq.c new file mode 100644 index 0000000..936709c --- /dev/null +++ b/rq.c @@ -0,0 +1,481 @@ +/* See LICENSE file for copyright and license details. */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + + + +/** + * 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) + 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, *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); + if (!new) + goto fail; + buffer = new; + } + n = read(fd, buffer + ptr, size - ptr); + if (n < 0) { + if (errno != EINTR) + goto fail; + continue; + } else if (n == 0) { + break; + } + ptr += (size_t)n; + } + if (buffer == NULL) + return 0; + if (ptr == size) { + new = realloc(buffer, size += 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 == 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++) { + 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(); + char *file = NULL; + 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 (!file || !strcmp(file, "-")) { + fd = STDIN_FILENO; + } else { + fd = open(file, O_RDONLY); + if (fd < 0) + goto fail; + } + + /* 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; +} 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 - * - * 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 -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include -#include - -#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; -} - -- cgit v1.2.3-70-g09d2