From: "Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
To: git@vger.kernel.org
Cc: "Junio C Hamano" <gitster@pobox.com>,
"Nguyễn Thái Ngọc Duy" <pclouds@gmail.com>
Subject: [PATCH v2 7/9] wildmatch: make a special case for "*/" with FNM_PATHNAME
Date: Fri, 28 Dec 2012 11:10:52 +0700 [thread overview]
Message-ID: <1356667854-8686-8-git-send-email-pclouds@gmail.com> (raw)
In-Reply-To: <1356667854-8686-1-git-send-email-pclouds@gmail.com>
Normally we need recursion for "*". In this case we know that it
matches everything until "/" so we can skip the recursion.
glibc, '*/*/*' on linux-2.6.git file list 2000 times
before:
wildmatch 8s 74513us
fnmatch 1s 97042us or 13.59% faster
after:
wildmatch 3s 521862us
fnmatch 3s 488616us or 99.06% slower
Same test with compat/fnmatch:
wildmatch 8s 110763us
fnmatch 2s 980845us or 36.75% faster
wildmatch 3s 522156us
fnmatch 1s 544487us or 43.85% slower
Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
---
t/t3070-wildmatch.sh | 8 ++++++++
wildmatch.c | 12 ++++++++++++
2 files changed, 20 insertions(+)
diff --git a/t/t3070-wildmatch.sh b/t/t3070-wildmatch.sh
index dbfa903..4cdb13b 100755
--- a/t/t3070-wildmatch.sh
+++ b/t/t3070-wildmatch.sh
@@ -203,6 +203,10 @@ match 1 1 'XXX/adobe/courier/bold/o/normal//12/120/75/75/m/70/iso8859/1' 'XXX/*/
match 0 0 'XXX/adobe/courier/bold/o/normal//12/120/75/75/X/70/iso8859/1' 'XXX/*/*/*/*/*/*/12/*/*/*/m/*/*/*'
match 1 0 'abcd/abcdefg/abcdefghijk/abcdefghijklmnop.txt' '**/*a*b*g*n*t'
match 0 0 'abcd/abcdefg/abcdefghijk/abcdefghijklmnop.txtz' '**/*a*b*g*n*t'
+match 0 x foo '*/*/*'
+match 0 x foo/bar '*/*/*'
+match 1 x foo/bba/arr '*/*/*'
+match 0 x foo/bb/aa/rr '*/*/*'
pathmatch 1 foo foo
pathmatch 0 foo fo
@@ -218,5 +222,9 @@ pathmatch 0 foo/bba/arr 'foo/*z'
pathmatch 0 foo/bba/arr 'foo/**z'
pathmatch 1 foo/bar 'foo?bar'
pathmatch 1 foo/bar 'foo[/]bar'
+pathmatch 0 foo '*/*/*'
+pathmatch 0 foo/bar '*/*/*'
+pathmatch 1 foo/bba/arr '*/*/*'
+pathmatch 1 foo/bb/aa/rr '*/*/*'
test_done
diff --git a/wildmatch.c b/wildmatch.c
index 0c8edb8..f6d45d5 100644
--- a/wildmatch.c
+++ b/wildmatch.c
@@ -116,6 +116,18 @@ static int dowild(const uchar *p, const uchar *text, unsigned int flags)
return WM_NOMATCH;
}
return WM_MATCH;
+ } else if (*p == '/' && (flags & WM_PATHNAME) && !match_slash) {
+ /*
+ * an asterisk followed by a slash
+ * with WM_PATHNAME matches the next
+ * directory
+ */
+ const char *slash = strchr((char*)text, '/');
+ if (!slash)
+ return WM_NOMATCH;
+ text = (const uchar*)slash;
+ /* the slash is consumed by the top-level for loop */
+ break;
}
while (1) {
if (t_ch == '\0')
--
1.8.0.rc2.23.g1fb49df
next prev parent reply other threads:[~2012-12-28 4:12 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-12-28 4:10 [PATCH v2 0/9] fnmatch replacement step 1 Nguyễn Thái Ngọc Duy
2012-12-28 4:10 ` [PATCH v2 1/9] compat/fnmatch: respect NO_FNMATCH* even on glibc Nguyễn Thái Ngọc Duy
2012-12-28 4:10 ` [PATCH v2 2/9] wildmatch: replace variable 'special' with better named ones Nguyễn Thái Ngọc Duy
2012-12-28 4:10 ` [PATCH v2 3/9] wildmatch: rename constants and update prototype Nguyễn Thái Ngọc Duy
2012-12-28 4:10 ` [PATCH v2 4/9] wildmatch: make dowild() take arbitrary flags Nguyễn Thái Ngọc Duy
2012-12-28 4:10 ` [PATCH v2 5/9] wildmatch: support "no FNM_PATHNAME" mode Nguyễn Thái Ngọc Duy
2012-12-28 4:10 ` [PATCH v2 6/9] test-wildmatch: add "perf" command to compare wildmatch and fnmatch Nguyễn Thái Ngọc Duy
2012-12-28 4:10 ` Nguyễn Thái Ngọc Duy [this message]
2012-12-28 4:10 ` [PATCH v2 8/9] wildmatch: advance faster in <asterisk> + <literal> patterns Nguyễn Thái Ngọc Duy
2012-12-28 4:10 ` [PATCH v2 9/9] Makefile: add USE_WILDMATCH to use wildmatch as fnmatch Nguyễn Thái Ngọc Duy
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: http://vger.kernel.org/majordomo-info.html
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1356667854-8686-8-git-send-email-pclouds@gmail.com \
--to=pclouds@gmail.com \
--cc=git@vger.kernel.org \
--cc=gitster@pobox.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
Code repositories for project(s) associated with this public inbox
https://80x24.org/mirrors/git.git
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for read-only IMAP folder(s) and NNTP newsgroup(s).