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* wildmatch: advance faster in <asterisk> + <literal> patternsNguyễn Thái Ngọc Duy2013-01-011-0/+23
| | | | | | | | | | | | | | | | | | Normally when we match "*X" on "abcX", we call dowild("X", "abcX"), dowild("X", "bcX"), dowild("X", "cX") and dowild("X", "X"). Only the last call may have a chance of matching. By skipping the text before "X", we can eliminate the first three useless calls. compat, '*/*/*' on linux-2.6.git file list 2000 times, before: wildmatch 7s 985049us fnmatch 2s 735541us or 34.26% faster and after: wildmatch 4s 492549us fnmatch 0s 888263us or 19.77% slower Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* wildmatch: make a special case for "*/" with FNM_PATHNAMENguyễn Thái Ngọc Duy2013-01-011-0/+12
| | | | | | | | | | | | | | | | | | | | | | 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> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* wildmatch: support "no FNM_PATHNAME" modeNguyễn Thái Ngọc Duy2013-01-011-4/+9
| | | | | | | | | | | | 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>
* wildmatch: make dowild() take arbitrary flagsNguyễn Thái Ngọc Duy2013-01-011-7/+6
| | | | | Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* wildmatch: rename constants and update prototypeNguyễn Thái Ngọc Duy2013-01-011-45/+43
| | | | | | | | | | | | | - 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>
* wildmatch: replace variable 'special' with better named onesNguyễn Thái Ngọc Duy2013-01-011-9/+9
| | | | | | | | | 'special' is too generic and is used for two different purposes. Replace it with 'match_slash' to indicate "**" pattern and 'negated' for "[!...]" and "[^...]". Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* wildmatch: fix "**" special caseNguyễn Thái Ngọc Duy2013-01-011-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | "**" is adjusted to only be effective when surrounded by slashes, in 40bbee0 (wildmatch: adjust "**" behavior - 2012-10-15). Except that the commit did it wrong: 1. when it checks for "the preceding slash unless ** is at the beginning", it compares to wrong pointer. It should have compared to the beginning of the pattern, not the text. 2. prev_p points to the character before "**", not the first "*". The correct comparison must be "prev_p < pattern" or "prev_p + 1 == pattern", not "prev_p == pattern". 3. The pattern must be surrounded by slashes unless it's at the beginning or the end of the pattern. We do two checks: one for the preceding slash and one the trailing slash. Both checks must be met. The use of "||" is wrong. This patch fixes all above. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* wildmatch: make /**/ match zero or more directoriesNguyễn Thái Ngọc Duy2012-10-151-0/+12
| | | | | | | | | | | | | | | | "foo/**/bar" matches "foo/x/bar", "foo/x/y/bar"... but not "foo/bar". We make a special case, when foo/**/ is detected (and "foo/" part is already matched), try matching "bar" with the rest of the string. "Match one or more directories" semantics can be easily achieved using "foo/*/**/bar". This also makes "**/foo" match "foo" in addition to "x/foo", "x/y/foo".. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* wildmatch: adjust "**" behaviorNguyễn Thái Ngọc Duy2012-10-151-6/+7
| | | | | | | | | | | | | | | | | | | | Standard wildmatch() sees consecutive asterisks as "*" that can also match slashes. But that may be hard to explain to users as "abc/**/def" can match "abcdef", "abcxyzdef", "abc/def", "abc/x/def", "abc/x/y/def"... This patch changes wildmatch so that users can do - "**/def" -> all paths ending with file/directory 'def' - "abc/**" - equivalent to "/abc/" - "abc/**/def" -> "abc/x/def", "abc/x/y/def"... - otherwise consider the pattern malformed if "**" is found Basically the magic of "**" only remains if it's wrapped around by slashes. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* wildmatch: fix case-insensitive matchingNguyễn Thái Ngọc Duy2012-10-151-0/+2
| | | | | | | | | | | | dowild() does case insensitive matching by lower-casing the text. That means lower case letters in patterns imply case-insensitive matching, but upper case means exact matching. We do not want that subtlety. Lower case pattern too so iwildmatch() always does what we expect it to do. Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* wildmatch: remove static variable force_lower_caseNguyễn Thái Ngọc Duy2012-10-151-16/+5
| | | | | | | | 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>
* wildmatch: make wildmatch's return value compatible with fnmatchNguyễn Thái Ngọc Duy2012-10-151-9/+12
| | | | | | | | 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>
* Integrate wildmatch to gitNguyễn Thái Ngọc Duy2012-10-151-1/+4
| | | | | Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* wildmatch: follow Git's coding conventionNguyễn Thái Ngọc Duy2012-10-151-146/+146
| | | | | | | | | wildmatch's coding style is pretty close to Git's except the use of 4 space indentation instead of 8. This patch should produce empty diff with "git diff -b" Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* wildmatch: remove unnecessary functionsNguyễn Thái Ngọc Duy2012-10-151-154/+10
| | | | | Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
* Import wildmatch from rsyncNguyễn Thái Ngọc Duy2012-10-151-0/+368
These files are from rsync.git commit f92f5b166e3019db42bc7fe1aa2f1a9178cd215d, which was the last commit before rsync turned GPL-3. All files are imported as-is and no-op. Adaptation is done in a separate patch. rsync.git -> git.git lib/wildmatch.[ch] wildmatch.[ch] wildtest.txt t/t3070/wildtest.txt Signed-off-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
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