diff options
| author | Mattias Andrée <maandree@kth.se> | 2021-02-23 01:11:51 +0100 |
|---|---|---|
| committer | Mattias Andrée <maandree@kth.se> | 2021-02-23 01:12:15 +0100 |
| commit | 33d0ee66d80d664aec3511b1827049e538642658 (patch) | |
| tree | fa3e0ae6a88ff139bb37923d348562b9d851420c | |
| parent | update dist (diff) | |
| download | median-2.0.tar.gz median-2.0.tar.bz2 median-2.0.tar.xz | |
Change license, rewrite in C, remove info manual, remove dist2.0
Signed-off-by: Mattias Andrée <maandree@kth.se>
| -rw-r--r-- | .gitignore | 21 | ||||
| -rw-r--r-- | COPYING | 15 | ||||
| -rw-r--r-- | LICENSE | 683 | ||||
| -rw-r--r-- | Makefile | 170 | ||||
| -rw-r--r-- | README | 21 | ||||
| -rw-r--r-- | config.mk | 6 | ||||
| -rw-r--r-- | dist/archlinux/stable/.gitignore | 6 | ||||
| -rw-r--r-- | dist/archlinux/stable/PKGBUILD | 27 | ||||
| -rw-r--r-- | dist/archlinux/stable/median.install | 20 | ||||
| -rw-r--r-- | doc/info/fdl.texinfo | 505 | ||||
| -rw-r--r-- | doc/info/median.texinfo | 128 | ||||
| -rw-r--r-- | doc/man/median.1 | 64 | ||||
| -rwxr-xr-x | median | bin | 0 -> 27752 bytes | |||
| -rw-r--r-- | median.1 | 60 | ||||
| -rw-r--r-- | median.c | 308 | ||||
| -rwxr-xr-x | src/median | 85 |
16 files changed, 443 insertions, 1676 deletions
@@ -1,19 +1,4 @@ -_/ -/bin/ -/obj/ -__pycache__/ -\#*\# -.* -!.git* +*\#* *~ -*.new -*.bak -*.swo -*.swp -*.pyc -*.pyo -*.info -*.pdf -*.dvi -*.ps - +*.o +/median diff --git a/COPYING b/COPYING deleted file mode 100644 index 959b0d7..0000000 --- a/COPYING +++ /dev/null @@ -1,15 +0,0 @@ -median — Calculate the median values for a set of groups -Copyright © 2014, 2015 Mattias Andrée (maandree@member.fsf.org) - -This program is free software: you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation, either version 3 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program. If not, see <http://www.gnu.org/licenses/>. @@ -1,674 +1,15 @@ - GNU GENERAL PUBLIC LICENSE - Version 3, 29 June 2007 +ISC License - Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/> - Everyone is permitted to copy and distribute verbatim copies - of this license document, but changing it is not allowed. +© 2014, 2015, 2021 Mattias Andrée <maandree@kth.se> - Preamble +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 GNU General Public License is a free, copyleft license for -software and other kinds of works. - - The licenses for most software and other practical works are designed -to take away your freedom to share and change the works. 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It is safest -to attach them to the start of each source file to most effectively -state the exclusion of warranty; and each file should have at least -the "copyright" line and a pointer to where the full notice is found. - - <one line to give the program's name and a brief idea of what it does.> - Copyright (C) <year> <name of author> - - This program is free software: you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation, either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see <http://www.gnu.org/licenses/>. - -Also add information on how to contact you by electronic and paper mail. - - If the program does terminal interaction, make it output a short -notice like this when it starts in an interactive mode: - - <program> Copyright (C) <year> <name of author> - This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. - This is free software, and you are welcome to redistribute it - under certain conditions; type `show c' for details. - -The hypothetical commands `show w' and `show c' should show the appropriate -parts of the General Public License. Of course, your program's commands -might be different; for a GUI interface, you would use an "about box". - - You should also get your employer (if you work as a programmer) or school, -if any, to sign a "copyright disclaimer" for the program, if necessary. -For more information on this, and how to apply and follow the GNU GPL, see -<http://www.gnu.org/licenses/>. - - The GNU General Public License does not permit incorporating your program -into proprietary programs. If your program is a subroutine library, you -may consider it more useful to permit linking proprietary applications with -the library. If this is what you want to do, use the GNU Lesser General -Public License instead of this License. But first, please read -<http://www.gnu.org/philosophy/why-not-lgpl.html>. +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. @@ -1,136 +1,44 @@ -# 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: + +CONFIGFILE = config.mk +include $(CONFIGFILE) + +all: median + +median: median.o + $(CC) -o $@ median.o $(LDFLAGS) + +median.o: median.c + $(CC) -c -o $@ median.c $(CFLAGS) $(CPPFLAGS) + +check: median + test "$$(printf '%s\n' 1 5 2 | ./median)" = 2 + test "$$(printf '%s\n' 1 2 | ./median)" = 1.5 + test "$$(printf '%s\n' '1 a' '2 a' | ./median)" = '1.5 a' + test "$$(printf '%s\n' '1 a' '2 b' | ./median)" = "$$(printf '%s\n' '1 a' '2 b')" + test "$$(printf '%s\n' '1 a' '2 b' '3 a' | ./median)" = "$$(printf '%s\n' '2 a' '2 b')" + test "$$(printf '%s\n' '1 a' '2 b' '3 a' '10 a' | ./median)" = "$$(printf '%s\n' '3 a' '2 b')" + test "$$(printf '%s\n' '1' '2 ' | ./median)" = "$$(printf '%s\n' '1' '2 ')" + test "$$(printf '1\ta\n3 a\n' | ./median)" = "$$(printf '1\ta\n3 a\n')" + test "$$(printf '%s\n' a c d | ./median)" = c + test "$$(printf '%s\n' a d c | ./median)" = c + test "$$(printf '%s\n' a b | ./median)" = a + test "$$(printf '%s\n' a b b | ./median)" = b + +install: + mkdir -p -- "$(DESTDIR)$(PREFIX)/bin" + mkdir -p -- "$(DESTDIR)$(MANPREFIX)/man1" + cp -- median "$(DESTDIR)$(PREFIX)/bin/" + cp -- median.1 "$(DESTDIR)$(MANPREFIX)/man1/" - -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 - -COMMAND = median -PKGNAME = median - - - -.PHONY: default -default: info - -.PHONY: all -all: doc - -.PHONY: doc -doc: info pdf dvi ps - -.PHONY: info -info: bin/median.info -bin/%.info: doc/info/%.texinfo doc/info/fdl.texinfo - @mkdir -p bin - makeinfo $< - mv $*.info $@ - -.PHONY: pdf -pdf: bin/median.pdf -bin/%.pdf: doc/info/%.texinfo doc/info/fdl.texinfo - @mkdir -p obj/pdf bin - cd obj/pdf ; texi2pdf ../../$< < /dev/null - mv obj/pdf/$*.pdf $@ - -.PHONY: dvi -dvi: bin/median.dvi -bin/%.dvi: doc/info/%.texinfo doc/info/fdl.texinfo - @mkdir -p obj/dvi bin - cd obj/dvi ; $(TEXI2DVI) ../../$< < /dev/null - mv obj/dvi/$*.dvi $@ - -.PHONY: ps -ps: bin/median.ps -bin/%.ps: doc/info/%.texinfo doc/info/fdl.texinfo - @mkdir -p obj/ps bin - cd obj/ps ; texi2pdf --ps ../../$< < /dev/null - mv obj/ps/$*.ps $@ - - - -.PHONY: install -install: install-base install-info install-man - -.PHONY: install -install-all: install-base install-doc - -.PHONY: install-base -install-base: install-command install-copyright - -.PHONY: install-command -install-command: - install -dm755 -- "$(DESTDIR)$(BINDIR)" - install -m755 src/median -- "$(DESTDIR)$(BINDIR)/$(COMMAND)" - -.PHONY: install-copyright -install-copyright: install-copying install-license - -.PHONY: install-copying -install-copying: - install -dm755 -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - install -m644 COPYING -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - -.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-ps install-dvi install-man - -.PHONY: install-info -install-info: bin/median.info - install -dm755 -- "$(DESTDIR)$(INFODIR)" - install -m644 $< -- "$(DESTDIR)$(INFODIR)/$(PKGNAME).info" - -.PHONY: install-pdf -install-pdf: bin/median.pdf - install -dm755 -- "$(DESTDIR)$(DOCDIR)" - install -m644 $< -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).pdf" - -.PHONY: install-ps -install-ps: bin/median.ps - install -dm755 -- "$(DESTDIR)$(DOCDIR)" - install -m644 $< -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).ps" - -.PHONY: install-dvi -install-dvi: bin/median.dvi - install -dm755 -- "$(DESTDIR)$(DOCDIR)" - install -m644 $< -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).dvi" - -.PHONY: install-man -install-man: doc/man/median.1 - install -dm755 -- "$(DESTDIR)$(MAN1DIR)" - install -m644 $< -- "$(DESTDIR)$(MAN1DIR)/$(COMMAND).1" - - - -.PHONY: uninstall uninstall: - -rm -- "$(DESTDIR)$(BINDIR)/$(COMMAND)" - -rm -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/COPYING" - -rm -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)/LICENSE" - -rmdir -- "$(DESTDIR)$(LICENSEDIR)/$(PKGNAME)" - -rm -- "$(DESTDIR)$(INFODIR)/$(PKGNAME).info" - -rm -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).pdf" - -rm -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).ps" - -rm -- "$(DESTDIR)$(DOCDIR)/$(PKGNAME).dvi" - -rm -- "$(DESTDIR)$(MAN1DIR)/$(COMMAND).1" - + -rm -f -- "$(DESTDIR)$(PREFIX)/bin/median" + -rm -f -- "$(DESTDIR)$(MANPREFIX)/man1/median.1" - -.PHONY: clean clean: - -rm -r obj bin + -rm -f -- median *.o + +.SUFFIXES: +.SUFFIXES: .c .o +.PHONY: all check install uninstall clean @@ -2,13 +2,25 @@ NAME median - Calculate the median values for a set of groups SYNOPSIS - median < INPUT + median DESCRIPTION median takes the first blank space-separated column values and the remainder as keys. It will then print the median for - each key. As a side effect median will print the result - sorted by the keys. + each key. Lines with the same key form a group. + + median outputs the median value for each key, no order of + the output lines are prescribed. No order is prescribed for + the input lines. + + Lines without a blank space are parsed as having the empty + string as the key, for lines with a blank space, the first + blank space is parsed as part of the key. + + For groups with an even number of elements, if the mean of + the middle two values are used as the median if all values + in the group are numerical, otherwise the lower value is + used as the median. EXAMPLES $ cat <<EOF | median @@ -38,6 +50,3 @@ RATIONALE SEE ALSO sort(1), expr(1), sets(1) - - Full documentation available locally via: info '(median)' - diff --git a/config.mk b/config.mk new file mode 100644 index 0000000..2e90419 --- /dev/null +++ b/config.mk @@ -0,0 +1,6 @@ +PREFIX = /usr +MANPREFIX = $(PREFIX)/share/man + +CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700 +CFLAGS = -std=c99 -Wall -O2 +LDFLAGS = -s diff --git a/dist/archlinux/stable/.gitignore b/dist/archlinux/stable/.gitignore deleted file mode 100644 index dcaac12..0000000 --- a/dist/archlinux/stable/.gitignore +++ /dev/null @@ -1,6 +0,0 @@ -* -!/.git* -*~ -!/PKGBUILD -!/median.install - diff --git a/dist/archlinux/stable/PKGBUILD b/dist/archlinux/stable/PKGBUILD deleted file mode 100644 index 959abf6..0000000 --- a/dist/archlinux/stable/PKGBUILD +++ /dev/null @@ -1,27 +0,0 @@ -# Maintainer: Mattias Andrée <`base64 -d`(bWFhbmRyZWUK)@member.fsf.org> - -pkgname=median -pkgver=1.2 -pkgrel=1 -pkgdesc="Calculate the median values for a set of groups" -arch=(any) -url="https://github.com/maandree/median" -license=(GPL3) -depends=(python3) -makedepends=(make coreutils texinfo) -install=$pkgname.install -source=($url/archive/$pkgver.tar.gz) -sha256sums=(e988111e206ecfb7fae08218997f919179d25be6a88d9c8cbbc1388bb6e665d9) - - -build() { - cd "$srcdir/$pkgname-$pkgver" - make PREFIX=/usr -} - - -package() { - cd "$srcdir/$pkgname-$pkgver" - make PREFIX=/usr install DESTDIR="$pkgdir" -} - diff --git a/dist/archlinux/stable/median.install b/dist/archlinux/stable/median.install deleted file mode 100644 index e5eade9..0000000 --- a/dist/archlinux/stable/median.install +++ /dev/null @@ -1,20 +0,0 @@ -_file="median" - -infodir="usr/share/info" -file="${_file}.info" - - -post_install() { - [[ -x "usr/bin/install-info" ]] || return 0 - install-info -- "${infodir}/${file}" "${infodir}/dir" 2> /dev/null -} - -post_upgrade() { - post_install "$1" -} - -pre_remove() { - [[ -x "usr/bin/install-info" ]] || return 0 - install-info --delete -- "${infodir}/${file}" "${infodir}/dir" 2> /dev/null -} - 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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Calculate the median values for a set of groups -@end direntry - - -@copying -Copyright @copyright{} 2014 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 median -- Calculate the median values for a set of groups -@insertcopying -@end ifnottex - -@titlepage -@title median -@subtitle Calculate the median values for a set of groups -@author by Mattias Andrée (maandree) - -@page -@c @center `' -@vskip 0pt plus 1filll -@insertcopying -@end titlepage - -@contents - - - -@menu -* Overview:: Brief overview of @command{median}. -* Invoking:: Invocation of @command{median}. -* GNU Free Documentation License:: Copying and sharing this manual. -@end menu - - - -@node Overview -@chapter Overview - -@command{median} is command line tool for getting the median -values of groups. For each input line it parses the first -column, separated by a blank space, as a value and the remainder -of the line as a key. If the line does not contain a blank -space and entire line is parsed as a value and the key is an -empty string. If the line however contains a blank space it is -included in the key, thus a line contain only a value and a line -contain a value followed by a blank space is not interpreted has -having the same key. @command{median} outputs the median value -for each key. In @command{median}'s current implementation the -keys will be sorted in the output. Keys do not have to be sorted -or groups. @command{median} will do its best to print the median -of in the same format as the input values. The input for a group -is of even number and is numerical the mean value of the two -middle values is used, otherwise the lower of the two middle -values is is used. Of course, if the number of values is odd, -the middle value is always used and it does not matter whether -the input is numerical or not. - - - -@node Invoking -@chapter Invoking - -@command{median} is command line filter that does not take any -arguments. See @ref{Overview} for detail about the input and -output format. - -Simple example: -@example -$ cat <<EOF | median -> -10 -> 2 -> 4 -> 3 -> 50 -> EOF -3 -@end example - -Example with 3 groups, one non-numerical: -@example -$ cat <<EOF | median -> 10 group 1 -> 20 group 1 -> 01 group 2 -> 02 group 2 -> a group 3 -> b group 3 -> c group 3 -> d group 3 -> EOF -15 group 1 -01.5 group 2 -b group 3 -@end example - - - -@node GNU Free Documentation License -@appendix GNU Free Documentation License -@include fdl.texinfo - -@bye - diff --git a/doc/man/median.1 b/doc/man/median.1 deleted file mode 100644 index b684304..0000000 --- a/doc/man/median.1 +++ /dev/null @@ -1,64 +0,0 @@ -.TH MEDIAN 1 MEDIAN -.SH NAME -median - Calculate the median values for a set of groups -.SH SYNOPSIS -.B median -< -.I INPUT -.SH DESCRIPTION -.B median -takes the first blank space-separated column values and the remainder -as keys. It will then print the median for each key. As a side effect -median will print the result sorted by the keys. -.SH EXAMPLES -.nf -$ cat <<EOF | median -\-10 -2 -4 -3 -50 -EOF -3 -.fi -.PP -.nf -$ cat <<EOF | median -\+003 c -\&.001 a -\-002 b -\+001 c -\-001 b -\+002 c -EOF -\&.001 a -\-001.5 b -\+002 c -.fi -.SH RATIONALE -Combining -.BR sort (1), -.BR sed (1), -.BR wc (1), -.BR expr (1) -to do this is too much work to do on a regular basis. -.SH "SEE ALSO" -.BR sort (1), -.BR expr (1), -.BR sets (1) -.PP -Full documentation available locally via: info \(aq(median)\(aq -.SH AUTHORS -Principal author, Mattias Andrée. See the COPYING file for the full -list of authors. -.SH LICENSE -Copyright \(co 2014, 2015 Mattias Andrée -.br -License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>. -.br -This is free software: you are free to change and redistribute it. -.br -There is NO WARRANTY, to the extent permitted by law. -.SH BUGS -Please report bugs to https://github.com/maandree/median/issues or to -maandree@member.fsf.org Binary files differdiff --git a/median.1 b/median.1 new file mode 100644 index 0000000..f4756af --- /dev/null +++ b/median.1 @@ -0,0 +1,60 @@ +.TH MEDIAN 1 MEDIAN +.SH NAME +median - Calculate the median values for a set of groups +.SH SYNOPSIS +.B median +.SH DESCRIPTION +.B median +takes the first blank space-separated column values and +the remainder as keys. It will then print the median +for each key. Lines with the same key form a group. +.PP +.B median +outputs the median value for each key, no order of the +output lines are prescribed. No order is prescribed for +the input lines. +.PP +Lines without a blank space are parsed as having the empty +string as the key, for lines with a blank space, the first +blank space is parsed as part of the key. +.PP +For groups with an even number of elements, if the mean of +the middle two values are used as the median if all values +in the group are numerical, otherwise the lower value is +used as the median. +.SH EXAMPLES +.nf +$ cat <<EOF | median +\-10 +2 +4 +3 +50 +EOF +3 +.fi +.PP +.nf +$ cat <<EOF | median +\+003 c +\&.001 a +\-002 b +\+001 c +\-001 b +\+002 c +EOF +\&.001 a +\-001.5 b +\+002 c +.fi +.SH RATIONALE +Combining +.BR sort (1), +.BR sed (1), +.BR wc (1), +.BR expr (1) +to do this is too much work to do on a regular basis. +.SH "SEE ALSO" +.BR sort (1), +.BR expr (1), +.BR sets (1) diff --git a/median.c b/median.c new file mode 100644 index 0000000..d282426 --- /dev/null +++ b/median.c @@ -0,0 +1,308 @@ +/* See LICENSE file for copyright and license details. */ +#include <ctype.h> +#include <errno.h> +#include <stdint.h> +#include <stdio.h> +#include <stdlib.h> +#include <string.h> + + +struct group { + char *key; + struct group *next; + struct group *prev; + char **elems; + size_t nelems; + size_t elems_size; + int numerical; +}; + + +static const char *argv0 = "median"; + +static struct group groups_head; +static struct group groups_tail; + + +static int +isnumerical(const char *s) +{ + if (*s == '+' || *s == '-') + s++; + if (s[0] == '.' && !s[1]) + return 0; + while (isdigit(*s)) + s++; + if (*s == '.') { + s++; + while (isdigit(*s)) + s++; + } + return *s ? 0 : 1; +} + + +static int +cmp_num(const void *apv, const void *bpv) +{ + const char *a = *(const char **)apv; + const char *b = *(const char **)bpv; + int mul = 1; + size_t an = 0, bn = 0, i; + + if (*a == '-' || *b == '-') { + mul = -1; + a = &a[1]; + b = &b[1]; + } else if (*a == '-') { + return -1; + } else if (*b == '-') { + return +1; + } else { + a = &a[*a == '+']; + b = &b[*b == '+']; + } + + while (*a == '0') a++; + while (*b == '0') b++; + + while (a[an] && a[an] != '.') an++; + while (b[bn] && b[bn] != '.') bn++; + + if (an != bn) + return an < bn ? -mul : mul; + + for (i = 0; a[i] && a[i] == b[i]; i++); + a = &a[i]; + b = &b[i]; + + if (i > an) { + if (!*a) + while (*b == '0') b++; + if (!*b) + while (*a == '0') a++; + } + + if (!*a && !*b) { + return 0; + } else if (!*a) { + return -mul; + } else if (!*b) { + return mul; + } else if (*a < *b) { + return -mul; + } else { + return mul; + } +} + + +static int +cmp_str(const void *apv, const void *bpv) +{ + const char *a = *(const char **)apv; + const char *b = *(const char **)bpv; + return strcmp(a, b); +} + + +static int +avg(char *a, const char *b) +{ + size_t i; + int carry = 0, val; + for (i = 0; a[i]; i++) { + val = (a[i] & 15) + (b[i] & 15); + carry = val & 1; + a[i] = (val >> 1) | '0'; + } + return carry; +} + + +static int +subavg(char *a, const char *b) +{ + size_t i; + int carry = 0, val; + for (i = 0; a[i]; i++) { + val = (a[i] & 15) - (b[i] & 15); + carry = val & 1; + a[i] = (val >> 1) | '0'; + } + return carry; +} + + +static void +median2(const char *low, const char *high, const char *key) +{ + int low_plus = *low == '+', low_minus = *low == '-', low_dot; + int high_plus = *high == '+', high_minus = *high == '-', high_dot; + size_t low_int, low_frac = 0, high_int, high_frac = 0; + size_t max_int, max_frac, i; + char *low2, *high2, *tmp; + const char *prefix; + int carry; + + for (low_int = 0; low[low_int] && low[low_int] != '.'; low_int++); + for (high_int = 0; high[high_int] && high[high_int] != '.'; high_int++); + low_dot = low[low_int] == '.'; + high_dot = high[high_int] == '.'; + + low = &low[low_plus | low_minus]; + high = &high[high_plus | high_minus]; + + if (low_dot) + low_frac = strlen(&low[low_int + 1]); + if (high_dot) + high_frac = strlen(&high[high_int + 1]); + + max_int = low_int > high_int ? low_int : high_int; + max_frac = low_frac > high_frac ? low_frac : high_frac; + + low2 = malloc(max_int + max_frac + 1); + high2 = malloc(max_int + max_frac + 1); + if (!low2 || !high2) { + perror(argv0); + exit(1); + } + low2[max_int + max_frac] = '\0'; + high2[max_int + max_frac] = '\0'; + + memset(low2, '0', max_int - low_int); + memcpy(&low2[max_int - low_int], low, low_int); + memcpy(&low2[max_int], &low[low_int + 1], low_frac); + memset(&low2[max_int + low_frac], '0', max_frac - low_frac); + + memset(high2, '0', max_int - high_int); + memcpy(&high2[max_int - high_int], high, high_int); + memcpy(&high2[max_int], &high[high_int + 1], high_frac); + memset(&high2[max_int + high_frac], '0', max_frac - high_frac); + + if (low_minus && high_minus) { + prefix = "-"; + carry = avg(high2, low2); + } else if (low_minus) { + for (i = 0; low2[i] && low2[i] == high2[i]; i++); + if (low2[i] <= high2[i]) { + prefix = "+"; + carry = subavg(high2, low2); + } else { + prefix = "-"; + carry = subavg(low2, high2); + tmp = low2, low2 = high2, high2 = tmp; + } + } else { + prefix = (low_plus || high_plus) ? "+" : ""; + carry = avg(high2, low2); + } + + printf("%s%.*s%s""%s%s%s\n", + prefix, (int)max_int, high2, + (carry || max_frac) ? "." : "", &high2[max_int], carry ? "5" : "", key); + + free(low2); + free(high2); +} + + +int +main(int argc, char *argv[]) +{ + char *line = NULL, *key; + struct group *group = NULL; + size_t size = 0; + ssize_t len; + + groups_head.next = &groups_tail; + groups_tail.prev = &groups_head; + + if (argc) { + argv0 = *argv++, argc--; + if (argc && argv[0][0] == '-' && argv[0][1] == '-' && !argv[0][2]) + argv++, argc--; + if (argc) { + fprintf(stderr, "usage: %s\n", argv0); + return 1; + } + } + + while ((len = getdelim(&line, &size, '\n', stdin)) > 0) { + if (len && line[--len] == '\n') + line[len] = '\0'; + + for (key = line; *key && !isspace(*key); key++); + if (group && !strcmp(group->key, key)) + goto found_group; + for (group = groups_head.next; group->key; group = group->next) + if (!strcmp(group->key, key)) + goto found_group; + group = calloc(1, sizeof(*group)); + if (!group) { + perror(argv0); + return 1; + } + group->key = strdup(key); + if (!group->key) { + perror(argv0); + return 1; + } + group->numerical = 1; + group->prev = groups_tail.prev; + group->next = &groups_tail; + groups_tail.prev->next = group; + groups_tail.prev = group; + + found_group: + if (group->nelems == group->elems_size) { + if (group->elems_size > SIZE_MAX / 2 / sizeof(*group->elems)) { + errno = ENOMEM; + perror(argv0); + return 1; + } + group->elems_size = group->elems_size ? group->elems_size * 2 : 16; + group->elems = realloc(group->elems, group->elems_size * sizeof(*group->elems)); + if (!group->elems) { + perror(argv0); + return 1; + } + } + *key = '\0'; + group->elems[group->nelems] = strdup(line); + if (!group->elems[group->nelems]) { + perror(argv0); + return 1; + } + if (group->numerical) + if (!isnumerical(line)) + group->numerical = 0; + group->nelems++; + } + + if (ferror(stdin)) { + perror(argv0); + return 1; + } + + free(line); + while ((group = groups_head.next)->key) { + qsort(group->elems, group->nelems, sizeof(*group->elems), group->numerical ? cmp_num : cmp_str); + if (group->nelems % 2 || !group->numerical) + printf("%s%s\n", group->elems[(group->nelems - 1) / 2], group->key); + else if (group->nelems) + median2(group->elems[group->nelems / 2 - 1], group->elems[group->nelems / 2 - 0], group->key); + groups_head.next = group->next; + while (group->nelems--) + free(group->elems[group->nelems]); + free(group->elems); + free(group->key); + free(group); + } + + if (fflush(stdout) || ferror(stdout) || fclose(stdout)) { + perror(argv0); + return 1; + } + return 0; +} diff --git a/src/median b/src/median deleted file mode 100755 index 8684cef..0000000 --- a/src/median +++ /dev/null @@ -1,85 +0,0 @@ -#!/usr/bin/env python3 -# -*- python -*- -''' -median — Calculate the median values for a set of groups -Copyright © 2014 Mattias Andrée (maandree@member.fsf.org) - -This program is free software: you can redistribute it and/or modify -it under the terms of the GNU General Public License as published by -the Free Software Foundation, either version 3 of the License, or -(at your option) any later version. - -This program is distributed in the hope that it will be useful, -but WITHOUT ANY WARRANTY; without even the implied warranty of -MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -GNU General Public License for more details. - -You should have received a copy of the GNU General Public License -along with this program. If not, see <http://www.gnu.org/licenses/>. -''' - -lines = [] -try: - while True: - lines.append(input()) -except: - pass - -get_key = lambda x : x[x.index(' '):] if ' ' in x else '' -get_value = lambda x : x[:x.index(' ')] if ' ' in x else x -lines = [(get_value(line), get_key(line)) for line in lines if not line == ''] - -lines.sort(key = lambda x : x[1]); - -last, values = None, None -lines.append((..., ...)) -for value, key in lines: - if last != key: - if last is not None: - try: - values.sort(key = lambda x : float(x)) - except: - values.sort() - if len(values) % 2 == 1: - median = values[len(values) // 2] - else: - low = values[len(values) // 2 - 1] - high = values[len(values) // 2 - 0] - try: - low_plus, low_minus, low_dot = (low[0] == '+'), (low[0] == '-'), ('.' in low) - high_plus, high_minus, high_dot = (high[0] == '+'), (high[0] == '-'), ('.' in high) - if low_plus or low_minus: low = low[1:] - if high_plus or high_minus: high = high[1:] - if not low_dot: low += '.' - if not high_dot: high += '.' - lowi , lowd = [len(x) for x in low.split('.')] - highi, highd = [len(x) for x in high.split('.')] - if lowd < highd: low += '0' - if lowd > highd: high += '0' - mediani = max(lowi, highi) - mediand = max(lowd, highd) - median = float(low) * (-1 if low_minus else 1) - median += float(high) * (-1 if high_minus else 1) - negative, median = median < 0, abs(median) / 2 - if (int(low.replace('.', '')[-1]) + int(high.replace('.', '')[-1])) % 2 == 1: - mediand += 1 - if mediand == 0: - median = '%%0%ii' % mediani % median - if low_dot or high_dot: - median += '.' - else: - median = '%%0%i.%if' % (max(1, mediani) + mediand + 1, mediand) % median - if mediani == 0: - median = median[1:] - if low_minus and high_minus: prefix = '-' - elif negative: prefix = '-' - elif low_plus or high_plus: prefix = '+' - elif low_minus or high_minus: prefix = '0' - else: prefix = '' - median = prefix + median - except: - median = values[len(values) // 2 - 1] - print(median + last) - last, values = key, [] - values.append(value) - |