coreutils/src/join.c, branch v8.7Mirror of https://https.git.savannah.gnu.org/git/coreutils.git/
https://git.shady.money/coreutils/atom?h=v8.72010-09-01T15:12:45Zjoin: improve performance when operating on whole lines2010-09-01T15:12:45ZPádraig BradyP@draigBrady.com2010-08-31T07:38:34Zurn:sha1:126d59542f89774a4c331a6a52b4c5dce4fce25e
Following on from commit f86bb696, 01-02-2010,
"join: make -t '' operate on the whole line".
Bypassing the delimiter search in this case,
gives about an 8% performance boost.
* src/join (xfields): Don't bother looking for '\n'
in the data, which we know won't be present.
provide POSIX_FADV_SEQUENTIAL hint to appropriate utils2010-07-22T00:04:47ZPádraig BradyP@draigBrady.com2010-07-20T17:51:01Zurn:sha1:47076e3c7c22fc7557f388ad3d47228b922da71e
Following on from commit dae35bac, 01-03-2010,
"sort: inform the system about our input access pattern"
apply the same hint to all appropriate utils.
This currently gives around a 5% speedup for reading
large files from fast flash devices on GNU/Linux.
* src/base64.c: Call fadvise (..., FADVISE_SEQUENTIAL);
* src/cat.c: Likewise.
* src/cksum.c: Likewise.
* src/comm.c: Likewise.
* src/cut.c: Likewise.
* src/expand.c: Likewise.
* src/fmt.c: Likewise.
* src/fold.c: Likewise.
* src/join.c: Likewise.
* src/md5sum.c: Likewise.
* src/nl.c: Likewise.
* src/paste.c: Likewise.
* src/pr.c: Likewise.
* src/ptx.c: Likewise.
* src/shuf.c: Likewise.
* src/sum.c: Likewise.
* src/tee.c: Likewise.
* src/tr.c: Likewise.
* src/tsort.c: Likewise.
* src/unexpand.c: Likewise.
* src/uniq.c: Likewise.
* src/wc.c: Likewise, unless we don't actually read().
maint: add a space before open-paren, where lacking2010-03-17T17:28:28ZJim Meyeringmeyering@redhat.com2010-03-17T17:27:52Zurn:sha1:46e01372773a9ca265009ca085a28aea313a3d73
* src/copy.c (copy_reg): Likewise.
* src/cut.c (main): Likewise.
* src/dd.c (main): Likewise.
* src/getlimits.c (print_int): Likewise.
* src/join.c (join): Likewise.
* src/pwd.c (logical_getcwd): Likewise.
* src/sort.c (specify_nmerge, mergefps, avoid_trashing_input): Likewise.
(merge): Likewise.
* src/uptime.c (usage): Likewise.
doc: remove extraneous periods from --help output2010-02-11T08:01:15ZPádraig BradyP@draigBrady.com2010-02-10T17:05:34Zurn:sha1:45b46f4951758e6d3564537bbc8535cf76e9114a
* src/join.c (usage): Mention "fields" rather than repeating "line"
so that it's more obvious that the fields are still parsed, and
thus -o is still honored for headers. Also remove an extraneous
'.' reported by Stéphane Raimbault.
* src/base64.c (usage): Remove extraneous blank line and order
the options alphabetically. Also remove an extraneous '.'
* src/chown.c (usage): Remove extraneous '.'
* src/cp.c (usage): Likewise.
* src/mktemp.c (usage): Likewise.
* src/pr.c (usage): Likewise.
* src/stat.c (usage): Likewise.
* src/uniq.c (usage): Likewise.
join: make -t '' operate on the whole line2010-02-01T15:36:56ZPádraig BradyP@draigBrady.com2010-02-01T15:19:08Zurn:sha1:f86bb6967dba1e2b6026997963a90e00cd641490
Previously passing an empty parameter to -t would
raise an error, but now it means to treat each line
as a single field for matching. This matches the
default operation of `sort` which is usually used
in conjunction with join.
* src/join.c (main): Set the field delimiter to '\n' if
an empty parameter is passed to -t.
(usage): Mention the operation of -t ''.
* tests/misc/join: Add 2 new tests, for the existing -t '\0'
and the new -t '' functionality.
* doc/coreutils.texi (join invocation): Mention that
join -t '' always operates on the whole line, while
join -t '\0' usually does.
* NEWS: Mention the change in behavior.
join: add --header option to always output the first line2010-02-01T13:57:42ZAssaf Gordonassafgordon@gmail.com2009-11-20T15:24:07Zurn:sha1:819aa9eba741c36bb522cbc2c7f10e24d190f945
This essentially allows one to use --check-order with headings.
Note join without --check-order will already handle the common case
where headings do match in each file, however using --check-order will fail
often when the header sorts after the first line of data.
Note also that this will join header lines from each file even if
they don't match, with headings from the first file being used.
* NEWS: Mention the new option.
* doc/coreutils.texi (join invocation): Describe the new option.
* src/join.c (usage): Likewise.
(join): Join the header lines unconditionally.
* tests/misc/join: Add 5 new tests.
maint: fix an inconsequential memory leak in join2010-02-01T13:52:58ZPádraig BradyP@draigBrady.com2010-01-27T02:17:36Zurn:sha1:86914603b58b666e4c0f8442ba46e89190f381e2
* src/join.c (join): Refactor the code that checks for misorder
at the tail of the files. The most significant change here is
that freeline() is called thus silencing a valgrind warning about
a definite but inconsequential memory leak.
(freeline): Make more general by doing nothing when passed NULL,
and setting freed pointers to NULL.
maint: update all FSF copyright year lists to include 20102010-01-01T13:06:47ZJim Meyeringmeyering@redhat.com2010-01-01T09:56:28Zurn:sha1:1aa17dc89b3f313697661541adca0aa0defbdc09
Use this command:
git ls-files | grep -v COPYING \
| xargs env UPDATE_COPYRIGHT_USE_INTERVALS=1 \
build-aux/update-copyright
doc: mention the texinfo documentation in --help2009-09-21T11:37:57ZPádraig BradyP@draigBrady.com2009-09-18T22:06:21Zurn:sha1:5d4f09d83a7c69110b4db97443759e9046c149e1
* src/system.h: Rename emit_bug_reporting_address() to
emit_ancillary_info() and update it to not print the translation
project address in en_* locales, and _do_ print it in the 'C'
(and other) locales so that it's included in the default man page.
Also mention how to invoke the texinfo documentation for each command.
Also move the "hard-locale.h" include to the 8 files that now use it.
* man/help2man: Strip the newly added texinfo reference from the
--help output as a more verbose version is already added by help2man.
Suggestion from C de-Avillez
global: convert indentation-TABs to spaces2009-08-25T07:21:00ZJim Meyeringmeyering@redhat.com2009-08-22T16:56:06Zurn:sha1:5e778f7c8d1ecf3d8f11385db013af2ba026e2a5
Transformed via this shell code:
t=$'\t'
git ls-files \
| grep -vE '(^|/)((GNU)?[Mm]akefile|ChangeLog)|\.(am|mk)$' \
| grep -vE 'tests/pr/|help2man' \
| xargs grep -lE "^ *$t" \
| xargs perl -MText::Tabs -ni -le \
'$m=/^( *\t[ \t]*)(.*)/; print $m ? expand($1) . $2 : $_'