This is a fork of The One True Awk, as shipped with OpenBSD. It
includes changes not present in the upstream version because they
are OpenBSD-specific, are still open PRs, or were rejected by the
upstream maintainer. This version of awk relies on APIs that are
not present in some other systems, such as asprintf, pledge,
reallocarray, srandom_deterministic and strlcpy.
Upstream is the bsd-features branch of https://github.com/onetrueawk/awk.
This is the version of awk described in The AWK Programming Language,
Second Edition, by Al Aho, Brian Kernighan, and Peter Weinberger
(Addison-Wesley, 2024, ISBN-13 978-0138269722, ISBN-10 0138269726).
This version of Awk handles UTF-8 and comma-separated values (CSV) input.
Functions that process strings now count Unicode code points, not bytes;
this affects length, substr, index, match, split,
sub, gsub, and others. Note that code
points are not necessarily characters.
UTF-8 sequences may appear in literal strings and regular expressions.
Arbitrary characters may be included with \u followed by 1 to 8 hexadecimal digits.
Regular expressions may include UTF-8 code points, including \u.
The option --csv turns on CSV processing of input:
fields are separated by commas, fields may be quoted with
double-quote (") characters, quoted fields may contain embedded newlines.
Double-quotes in fields have to be doubled and enclosed in quoted fields.
In CSV mode, FS is ignored.
If no explicit separator argument is provided,
field-splitting in split is determined by CSV mode.
Copyright (C) Lucent Technologies 1997
All Rights Reserved
Permission to use, copy, modify, and distribute this software and its documentation for any purpose and without fee is hereby granted, provided that the above copyright notice appear in all copies and that both that the copyright notice and this permission notice and warranty disclaimer appear in supporting documentation, and that the name Lucent Technologies or any of its entities not be used in advertising or publicity pertaining to distribution of the software without specific, written prior permission.
LUCENT DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL LUCENT OR ANY OF ITS ENTITIES BE LIABLE FOR ANY SPECIAL, 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.
Changes, mostly bug fixes and occasional enhancements, are listed
in FIXES. If you distribute this code further, please please please
distribute FIXES with it.
If you find errors, please report them to [email protected] rather than the upstream maintainer unless you can also reproduce the problem with an unmodified version of the upstream awk.
Patches may be submitted to the [email protected] mailing list, or [email protected] if you are fixing a bug.
The program itself is created by
make
which should produce a sequence of messages roughly like this:
bison -d awkgram.y
awkgram.y: warning: 44 shift/reduce conflicts [-Wconflicts-sr]
awkgram.y: warning: 85 reduce/reduce conflicts [-Wconflicts-rr]
awkgram.y: note: rerun with option '-Wcounterexamples' to generate conflict counterexamples
gcc -g -Wall -pedantic -Wcast-qual -O2 -c -o awkgram.tab.o awkgram.tab.c
gcc -g -Wall -pedantic -Wcast-qual -O2 -c -o b.o b.c
gcc -g -Wall -pedantic -Wcast-qual -O2 -c -o main.o main.c
gcc -g -Wall -pedantic -Wcast-qual -O2 -c -o parse.o parse.c
gcc -g -Wall -pedantic -Wcast-qual -O2 maketab.c -o maketab
./maketab awkgram.tab.h >proctab.c
gcc -g -Wall -pedantic -Wcast-qual -O2 -c -o proctab.o proctab.c
gcc -g -Wall -pedantic -Wcast-qual -O2 -c -o tran.o tran.c
gcc -g -Wall -pedantic -Wcast-qual -O2 -c -o lib.o lib.c
gcc -g -Wall -pedantic -Wcast-qual -O2 -c -o run.o run.c
gcc -g -Wall -pedantic -Wcast-qual -O2 -c -o lex.o lex.c
gcc -g -Wall -pedantic -Wcast-qual -O2 awkgram.tab.o b.o main.o parse.o proctab.o tran.o lib.o run.o lex.o -lm
This produces an executable a.out; you will eventually want to
move this to some place like /usr/bin/awk.
If your system does not have yacc or bison (the GNU
equivalent), you need to install one of them first.
The default in the makefile is bison; you will have
to edit the makefile to use yacc.
NOTE: This version uses ISO/IEC C99, as you should also. We have
compiled this without any changes using gcc -Wall and/or local C
compilers on a variety of systems, but new systems or compilers
may raise some new complaint; reports of difficulties are
welcome.
This compiles without change on Macintosh OS X using gcc and
the standard developer tools.
You can also use make CC=g++ to build with the GNU C++ compiler,
should you choose to do so.
We don't usually do releases.
Mon 05 Feb 2024 08:46:55 IST