In the merge of 20210215, I left two merge conflicts #if 0'd by mistake to check later rather than resolve them as part of the merge. This code turns out to be from the original one-true-awk import and not FreeBSD specific, so remove them. Remove a extra definition of HAT. Remove a stylistic change that also appears to be a mismerge along the way. Remove FREEBSD-upgrade. Nobody has updated it since the original 2007 cvs import. It talks about old CVS branches that never made it into svn, let alone git. New imports will follow the standard practices now, so there's nothing left to document. Move README to README.md and copy the README.md from upstream over. This leaves just the $FreeBSD$ lines (which remain for the stable/12 merge) and the strcoll part of ru@'s r201989/d98dd8e5f94c as the only diffs with upstream. FreeBSD also still has its own man page, which I don't plan on changing. Once this commit is merged to stable/12, I plan no further merges to stable/12. Sometime after that I'll remove the $FreeBSD$ lines to reduce the diffs even more (though i want to make sure plans won't change first). I also plan to talk to upstream about this change... MFC After: 2 weeks Sponsored by: Netflix |
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.. | ||
bugs-fixed | ||
awk.1 | ||
awk.h | ||
awkgram.y | ||
b.c | ||
ChangeLog | ||
FIXES | ||
lex.c | ||
lib.c | ||
LICENSE | ||
main.c | ||
makefile | ||
maketab.c | ||
parse.c | ||
proctab.c | ||
proto.h | ||
README.md | ||
REGRESS | ||
run.c | ||
tran.c |
The One True Awk
This is the version of awk
described in The AWK Programming Language,
by Al Aho, Brian Kernighan, and Peter Weinberger
(Addison-Wesley, 1988, ISBN 0-201-07981-X).
Copyright
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.
Distribution and Reporting Problems
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 bwk@cs.princeton.edu. Please also open an issue in the GitHub issue tracker, to make it easy to track issues. Thanks.
Submitting Pull Requests
Pull requests are welcome. Some guidelines:
-
Please do not use functions or facilities that are not standard (e.g.,
strlcpy()
,fpurge()
). -
Please run the test suite and make sure that your changes pass before posting the pull request. To do so:
- Save the previous version of
awk
somewhere in your path. Call itnawk
(for example). - Run
oldawk=nawk make check > check.out 2>&1
. - Search for
BAD
orerror
in the result. In general, look over it manually to make sure there are no errors.
- Save the previous version of
-
Please create the pull request with a request to merge into the
staging
branch instead of into themaster
branch. This allows us to do testing, and to make any additional edits or changes after the merge but before merging tomaster
.
Building
The program itself is created by
make
which should produce a sequence of messages roughly like this:
yacc -d awkgram.y
conflicts: 43 shift/reduce, 85 reduce/reduce
mv y.tab.c ytab.c
mv y.tab.h ytab.h
cc -c ytab.c
cc -c b.c
cc -c main.c
cc -c parse.c
cc maketab.c -o maketab
./maketab >proctab.c
cc -c proctab.c
cc -c tran.c
cc -c lib.c
cc -c run.c
cc -c lex.c
cc ytab.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.
NOTE: This version uses ANSI C (C 99), 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.
The version of malloc
that comes with some systems is sometimes
astonishly slow. If awk
seems slow, you might try fixing that.
More generally, turning on optimization can significantly improve
awk
's speed, perhaps by 1/3 for highest levels.
A Note About Maintenance
NOTICE! Maintenance of this program is on a ``best effort'' basis. We try to get to issues and pull requests as quickly as we can. Unfortunately, however, keeping this program going is not at the top of our priority list.
Last Updated
Fri Dec 25 16:53:34 EST 2020