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e0e7cb8080
The -G<regex> option of log looks for the differences whose patch text
contains added/removed lines that match regex.
Currently -G looks also into patches of binary files (which
according to [1]) is binary as well.
This has a couple of issues:
- It makes the pickaxe search slow. In a proprietary repository of the
author with only ~5500 commits and a total .git size of ~300MB
searching takes ~13 seconds
$time git log -Gwave > /dev/null
real 0m13,241s
user 0m12,596s
sys 0m0,644s
whereas when we ignore binary files with this patch it takes ~4s
$time ~/devel/git/git log -Gwave > /dev/null
real 0m3,713s
user 0m3,608s
sys 0m0,105s
which is a speedup of more than fourfold.
- The internally used algorithm for generating patch text is based on
xdiff and its states in [1]
> The output format of the binary patch file is proprietary
> (and binary) and it is basically a collection of copy and insert
> commands [..]
which means that the current format could change once the internal
algorithm is changed as the format is not standardized. In addition
the git binary patch format used for preparing patches for git apply
is *different* from the xdiff format as can be seen by comparing
git log -p -a
commit 6e95bf4bafccf14650d02ab57f3affe669be10cf
Author: A U Thor <author@example.com>
Date: Thu Apr 7 15:14:13 2005 -0700
modify binary file
diff --git a/data.bin b/data.bin
index f414c84..edfeb6f 100644
--- a/data.bin
+++ b/data.bin
@@ -1,2 +1,4 @@
a
a^@a
+a
+a^@a
with git log --binary
commit 6e95bf4bafccf14650d02ab57f3affe669be10cf
Author: A U Thor <author@example.com>
Date: Thu Apr 7 15:14:13 2005 -0700
modify binary file
diff --git a/data.bin b/data.bin
index f414c84bd3aa25fa07836bb1fb73db784635e24b..edfeb6f501[..]
GIT binary patch
literal 12
QcmYe~N@Pgn0zx1O01)N^ZvX%Q
literal 6
NcmYe~N@Pgn0ssWg0XP5v
which seems unexpected.
To resolve these issues this patch makes -G<regex> ignore binary files
by default. Textconv filters are supported and also -a/--text for
getting the old and broken behaviour back.
The -S<block of text> option of log looks for differences that changes
the number of occurrences of the specified block of text (i.e.
addition/deletion) in a file. As we want to keep the current behaviour,
add a test to ensure it stays that way.
[1]: http://www.xmailserver.org/xdiff.html
Signed-off-by: Thomas Braun <thomas.braun@virtuell-zuhause.de>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
144 lines
3.5 KiB
Bash
Executable file
144 lines
3.5 KiB
Bash
Executable file
#!/bin/sh
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test_description='log --grep/--author/--regexp-ignore-case/-S/-G'
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. ./test-lib.sh
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test_log () {
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expect=$1
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kind=$2
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needle=$3
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shift 3
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rest=$@
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case $kind in
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--*)
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opt=$kind=$needle
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;;
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*)
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opt=$kind$needle
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;;
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esac
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case $expect in
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expect_nomatch)
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match=nomatch
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;;
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*)
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match=match
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;;
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esac
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test_expect_success "log $kind${rest:+ $rest} ($match)" "
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git log $rest $opt --format=%H >actual &&
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test_cmp $expect actual
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"
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}
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# test -i and --regexp-ignore-case and expect both to behave the same way
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test_log_icase () {
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test_log $@ --regexp-ignore-case
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test_log $@ -i
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}
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test_expect_success setup '
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>expect_nomatch &&
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>file &&
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git add file &&
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test_tick &&
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git commit -m initial &&
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git rev-parse --verify HEAD >expect_initial &&
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echo Picked >file &&
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git add file &&
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test_tick &&
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git commit --author="Another Person <another@example.com>" -m second &&
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git rev-parse --verify HEAD >expect_second
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'
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test_log expect_initial --grep initial
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test_log expect_nomatch --grep InItial
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test_log_icase expect_initial --grep InItial
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test_log_icase expect_nomatch --grep initail
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test_log expect_second --author Person
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test_log expect_nomatch --author person
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test_log_icase expect_second --author person
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test_log_icase expect_nomatch --author spreon
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test_log expect_nomatch -G picked
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test_log expect_second -G Picked
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test_log_icase expect_nomatch -G pickle
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test_log_icase expect_second -G picked
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test_expect_success 'log -G --textconv (missing textconv tool)' '
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echo "* diff=test" >.gitattributes &&
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test_must_fail git -c diff.test.textconv=missing log -Gfoo &&
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rm .gitattributes
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'
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test_expect_success 'log -G --no-textconv (missing textconv tool)' '
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echo "* diff=test" >.gitattributes &&
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git -c diff.test.textconv=missing log -Gfoo --no-textconv >actual &&
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test_cmp expect_nomatch actual &&
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rm .gitattributes
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'
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test_log expect_nomatch -S picked
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test_log expect_second -S Picked
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test_log_icase expect_second -S picked
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test_log_icase expect_nomatch -S pickle
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test_log expect_nomatch -S p.cked --pickaxe-regex
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test_log expect_second -S P.cked --pickaxe-regex
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test_log_icase expect_second -S p.cked --pickaxe-regex
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test_log_icase expect_nomatch -S p.ckle --pickaxe-regex
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test_expect_success 'log -S --textconv (missing textconv tool)' '
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echo "* diff=test" >.gitattributes &&
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test_must_fail git -c diff.test.textconv=missing log -Sfoo &&
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rm .gitattributes
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'
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test_expect_success 'log -S --no-textconv (missing textconv tool)' '
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echo "* diff=test" >.gitattributes &&
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git -c diff.test.textconv=missing log -Sfoo --no-textconv >actual &&
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test_cmp expect_nomatch actual &&
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rm .gitattributes
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'
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test_expect_success 'setup log -[GS] binary & --text' '
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git checkout --orphan GS-binary-and-text &&
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git read-tree --empty &&
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printf "a\na\0a\n" >data.bin &&
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git add data.bin &&
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git commit -m "create binary file" data.bin &&
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printf "a\na\0a\n" >>data.bin &&
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git commit -m "modify binary file" data.bin &&
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git rm data.bin &&
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git commit -m "delete binary file" data.bin &&
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git log >full-log
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'
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test_expect_success 'log -G ignores binary files' '
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git log -Ga >log &&
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test_must_be_empty log
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'
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test_expect_success 'log -G looks into binary files with -a' '
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git log -a -Ga >log &&
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test_cmp log full-log
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'
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test_expect_success 'log -G looks into binary files with textconv filter' '
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test_when_finished "rm .gitattributes" &&
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echo "* diff=bin" >.gitattributes &&
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git -c diff.bin.textconv=cat log -Ga >log &&
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test_cmp log full-log
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'
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test_expect_success 'log -S looks into binary files' '
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git log -Sa >log &&
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test_cmp log full-log
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'
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test_done
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