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Nguyễn Thái Ngọc Duy cebcab189a Makefile: add USE_WILDMATCH to use wildmatch as fnmatch 
This is similar to NO_FNMATCH but it uses wildmatch instead of
compat/fnmatch. This is an intermediate step to let wildmatch be used
as fnmatch replacement for wider audience before it replaces fnmatch
completely and compat/fnmatch is removed.

fnmatch in test-wildmatch is not impacted by this and is the only
place that NO_FNMATCH or NO_FNMATCH_CASEFOLD remain active when
USE_WILDMATCH is set.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
 2013-01-01 15:32:37 -08:00
Nguyễn Thái Ngọc Duy 1b25892636 test-wildmatch: add "perf" command to compare wildmatch and fnmatch 
It takes a text file, a pattern, a number <n> and pathname flag. Each
line in the text file is matched against the pattern <n> times. If
"pathname" is given, FNM_PATHNAME is used.

test-wildmatch is built with -O2 and tested against glibc 2.14.1 (also
-O2) and compat/fnmatch. The input file is linux-2.6.git file list.
<n> is 2000. The complete command list is at the end.

wildmatch is beaten in the following cases. Apparently it needs some
improvement in FNM_PATHNAME case:

glibc, '*/*/*' with FNM_PATHNAME:
wildmatch 8s 1559us
fnmatch   1s 11877us or 12.65% faster

compat, '*/*/*' with FNM_PATHNAME:
wildmatch 7s 922458us
fnmatch   2s 905111us or 36.67% faster

compat, '*/*/*' without FNM_PATHNAME:
wildmatch 7s 264201us
fnmatch   2s 1897us or 27.56% faster

compat, '[a-z]*/[a-z]*/[a-z]*' with FNM_PATHNAME:
wildmatch 8s 742827us
fnmatch   0s 922943us or 10.56% faster

compat, '[a-z]*/[a-z]*/[a-z]*' without FNM_PATHNAME:
wildmatch 8s 284520us
fnmatch   0s 6936us or 0.08% faster

The rest of glibc numbers
-------------------------

'Documentation/*'
wildmatch 1s 529479us
fnmatch   1s 98263us or 71.81% slower

'drivers/*'
wildmatch 1s 988288us
fnmatch   1s 192049us or 59.95% slower

'Documentation/*' pathname
wildmatch 1s 557507us
fnmatch   1s 93696us or 70.22% slower

'drivers/*' pathname
wildmatch 2s 161626us
fnmatch   1s 230372us or 56.92% slower

'[Dd]ocu[Mn]entation/*'
wildmatch 1s 776581us
fnmatch   1s 471693us or 82.84% slower

'[Dd]o?u[Mn]en?ati?n/*'
wildmatch 1s 770770us
fnmatch   1s 555727us or 87.86% slower

'[Dd]o?u[Mn]en?ati?n/*' pathname
wildmatch 1s 783507us
fnmatch   1s 537029us or 86.18% slower

'[A-Za-z][A-Za-z]??*'
wildmatch 4s 110386us
fnmatch   4s 926306us or 119.85% slower

'[A-Za-z][A-Za-z]??'
wildmatch 3s 918114us
fnmatch   3s 686175us or 94.08% slower

'[A-Za-z][A-Za-z]??*' pathname
wildmatch 4s 453746us
fnmatch   4s 955856us or 111.27% slower

'[A-Za-z][A-Za-z]??' pathname
wildmatch 3s 896646us
fnmatch   3s 733828us or 95.82% slower

'*/*/*'
wildmatch 7s 287985us
fnmatch   1s 74083us or 14.74% slower

'[a-z]*/[a-z]*/[a-z]*' pathname
wildmatch 8s 796659us
fnmatch   1s 568409us or 17.83% slower

'[a-z]*/[a-z]*/[a-z]*'
wildmatch 8s 316559us
fnmatch   3s 430652us or 41.25% slower

The rest of compat numbers
--------------------------

'Documentation/*'
wildmatch 1s 520389us
fnmatch   0s 62579us or 4.12% slower

'drivers/*'
wildmatch 1s 955354us
fnmatch   0s 190109us or 9.72% slower

'Documentation/*' pathname
wildmatch 1s 561675us
fnmatch   0s 55336us or 3.54% slower

'drivers/*' pathname
wildmatch 2s 106100us
fnmatch   0s 219680us or 10.43% slower

'[Dd]ocu[Mn]entation/*'
wildmatch 1s 750810us
fnmatch   0s 542721us or 31.00% slower

'[Dd]o?u[Mn]en?ati?n/*'
wildmatch 1s 724791us
fnmatch   0s 538948us or 31.25% slower

'[Dd]o?u[Mn]en?ati?n/*' pathname
wildmatch 1s 731403us
fnmatch   0s 537474us or 31.04% slower

'[A-Za-z][A-Za-z]??*'
wildmatch 4s 28555us
fnmatch   1s 67297us or 26.49% slower

'[A-Za-z][A-Za-z]??'
wildmatch 3s 838279us
fnmatch   0s 880005us or 22.93% slower

'[A-Za-z][A-Za-z]??*' pathname
wildmatch 4s 379476us
fnmatch   1s 55643us or 24.10% slower

'[A-Za-z][A-Za-z]??' pathname
wildmatch 3s 830910us
fnmatch   0s 849699us or 22.18% slower

The following commands are used:

LANG=C ./test-wildmatch perf /tmp/filelist.txt 'Documentation/*' 2000
LANG=C ./test-wildmatch perf /tmp/filelist.txt 'drivers/*' 2000
LANG=C ./test-wildmatch perf /tmp/filelist.txt 'Documentation/*' 2000 pathname
LANG=C ./test-wildmatch perf /tmp/filelist.txt 'drivers/*' 2000 pathname
LANG=C ./test-wildmatch perf /tmp/filelist.txt '[Dd]ocu[Mn]entation/*' 2000
LANG=C ./test-wildmatch perf /tmp/filelist.txt '[Dd]o?u[Mn]en?ati?n/*' 2000
LANG=C ./test-wildmatch perf /tmp/filelist.txt '[Dd]o?u[Mn]en?ati?n/*' 2000 pathname
LANG=C ./test-wildmatch perf /tmp/filelist.txt '[A-Za-z][A-Za-z]??*' 2000
LANG=C ./test-wildmatch perf /tmp/filelist.txt '[A-Za-z][A-Za-z]??' 2000
LANG=C ./test-wildmatch perf /tmp/filelist.txt '[A-Za-z][A-Za-z]??*' 2000 pathname
LANG=C ./test-wildmatch perf /tmp/filelist.txt '[A-Za-z][A-Za-z]??' 2000 pathname
LANG=C ./test-wildmatch perf /tmp/filelist.txt '*/*/*' 2000
LANG=C ./test-wildmatch perf /tmp/filelist.txt '*/*/*' 2000 pathname
LANG=C ./test-wildmatch perf /tmp/filelist.txt '[a-z]*/[a-z]*/[a-z]*' 2000 pathname
LANG=C ./test-wildmatch perf /tmp/filelist.txt '[a-z]*/[a-z]*/[a-z]*' 2000

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
 2013-01-01 15:32:37 -08:00
Nguyễn Thái Ngọc Duy c41244e702 wildmatch: support "no FNM_PATHNAME" mode 
So far, wildmatch() has always honoured directory boundary and there
was no way to turn it off. Make it behave more like fnmatch() by
requiring all callers that want the FNM_PATHNAME behaviour to pass
that in the equivalent flag WM_PATHNAME. Callers that do not specify
WM_PATHNAME will get wildcards like ? and * in their patterns matched
against '/', just like not passing FNM_PATHNAME to fnmatch().

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
 2013-01-01 15:32:37 -08:00
Nguyễn Thái Ngọc Duy 9b3497cab9 wildmatch: rename constants and update prototype 
- All exported constants now have a prefix WM_
- Do not rely on FNM_* constants, use the WM_ counterparts
- Remove TRUE and FALSE to follow Git's coding style
- While at it, turn flags type from int to unsigned int
- Add an (unused yet) argument to carry extra information
  so that we don't have to change the prototype again later
  when we need to pass other stuff to wildmatch

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
 2013-01-01 15:32:36 -08:00
Nguyễn Thái Ngọc Duy ef49841ddf test-wildmatch: avoid Windows path mangling 
The MSYS bash mangles arguments that begin with a forward slash
when they are passed to test-wildmatch. This causes tests to fail.
Avoid mangling by prepending "XXX", which is removed by
test-wildmatch before further processing.

[J6t: reworded commit message]

Reported-by: Johannes Sixt <j6t@kdbg.org>
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Johannes Sixt <j6t@kdbg.org>
 2012-11-20 12:09:13 -08:00
Nguyễn Thái Ngọc Duy 9b4edc0a49 wildmatch: remove static variable force_lower_case 
One place less to worry about thread safety. Also combine wildmatch
and iwildmatch into one.

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
 2012-10-15 14:58:18 -07:00
Nguyễn Thái Ngọc Duy 3ae5396cf7 wildmatch: make wildmatch's return value compatible with fnmatch 
wildmatch returns non-zero if matched, zero otherwise. This patch
makes it return zero if matches, non-zero otherwise, like fnmatch().

Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
 2012-10-15 14:58:18 -07:00
Nguyễn Thái Ngọc Duy feabcc173b Integrate wildmatch to git 
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
 2012-10-15 14:58:17 -07:00