Merge branch 'sp/reflog'

* sp/reflog:
  fetch.c: do not pass uninitialized lock to unlock_ref().
  Test that git-branch -l works.
  Verify git-commit provides a reflog message.
  Enable ref log creation in git checkout -b.
  Create/delete branch ref logs.
  Include ref log detail in commit, reset, etc.
  Change order of -m option to update-ref.
  Correct force_write bug in refs.c
  Change 'master@noon' syntax to 'master@{noon}'.
  Log ref updates made by fetch.
  Force writing ref if it doesn't exist.
  Added logs/ directory to repository layout.
  General ref log reading improvements.
  Fix ref log parsing so it works properly.
  Support 'master@2 hours ago' syntax
  Log ref updates to logs/refs/<ref>
  Convert update-ref to use ref_lock API.
  Improve abstraction of ref lock/write.

2 files changed, 243 insertions, 1 deletions

diff --git a/t/t1400-update-ref.sh b/t/t1400-update-ref.sh
new file mode 100755
index 0000000000..df3e993365
--- /dev/null
+++ b/t/t1400-update-ref.sh
@@ -0,0 +1,213 @@
+#!/bin/sh
+#
+# Copyright (c) 2006 Shawn Pearce
+#
+
+test_description='Test git-update-ref and basic ref logging'
+. ./test-lib.sh
+
+Z=0000000000000000000000000000000000000000
+A=1111111111111111111111111111111111111111
+B=2222222222222222222222222222222222222222
+C=3333333333333333333333333333333333333333
+D=4444444444444444444444444444444444444444
+E=5555555555555555555555555555555555555555
+F=6666666666666666666666666666666666666666
+m=refs/heads/master
+
+test_expect_success \
+	"create $m" \
+	'git-update-ref $m $A &&
+	 test $A = $(cat .git/$m)'
+test_expect_success \
+	"create $m" \
+	'git-update-ref $m $B $A &&
+	 test $B = $(cat .git/$m)'
+rm -f .git/$m
+
+test_expect_success \
+	"create $m (by HEAD)" \
+	'git-update-ref HEAD $A &&
+	 test $A = $(cat .git/$m)'
+test_expect_success \
+	"create $m (by HEAD)" \
+	'git-update-ref HEAD $B $A &&
+	 test $B = $(cat .git/$m)'
+rm -f .git/$m
+
+test_expect_failure \
+	'(not) create HEAD with old sha1' \
+	'git-update-ref HEAD $A $B'
+test_expect_failure \
+	"(not) prior created .git/$m" \
+	'test -f .git/$m'
+rm -f .git/$m
+
+test_expect_success \
+	"create HEAD" \
+	'git-update-ref HEAD $A'
+test_expect_failure \
+	'(not) change HEAD with wrong SHA1' \
+	'git-update-ref HEAD $B $Z'
+test_expect_failure \
+	"(not) changed .git/$m" \
+	'test $B = $(cat .git/$m)'
+rm -f .git/$m
+
+mkdir -p .git/logs/refs/heads
+touch .git/logs/refs/heads/master
+test_expect_success \
+	"create $m (logged by touch)" \
+	'GIT_COMMITTER_DATE="2005-05-26 23:30" \
+	 git-update-ref HEAD $A -m "Initial Creation" &&
+	 test $A = $(cat .git/$m)'
+test_expect_success \
+	"update $m (logged by touch)" \
+	'GIT_COMMITTER_DATE="2005-05-26 23:31" \
+	 git-update-ref HEAD $B $A -m "Switch" &&
+	 test $B = $(cat .git/$m)'
+test_expect_success \
+	"set $m (logged by touch)" \
+	'GIT_COMMITTER_DATE="2005-05-26 23:41" \
+	 git-update-ref HEAD $A &&
+	 test $A = $(cat .git/$m)'
+
+cat >expect <<EOF
+$Z $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150200 +0000	Initial Creation
+$A $B $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150260 +0000	Switch
+$B $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150860 +0000
+EOF
+test_expect_success \
+	"verifying $m's log" \
+	'diff expect .git/logs/$m'
+rm -rf .git/$m .git/logs expect
+
+test_expect_success \
+	'enable core.logAllRefUpdates' \
+	'git-repo-config core.logAllRefUpdates true &&
+	 test true = $(git-repo-config --bool --get core.logAllRefUpdates)'
+
+test_expect_success \
+	"create $m (logged by config)" \
+	'GIT_COMMITTER_DATE="2005-05-26 23:32" \
+	 git-update-ref HEAD $A -m "Initial Creation" &&
+	 test $A = $(cat .git/$m)'
+test_expect_success \
+	"update $m (logged by config)" \
+	'GIT_COMMITTER_DATE="2005-05-26 23:33" \
+	 git-update-ref HEAD $B $A -m "Switch" &&
+	 test $B = $(cat .git/$m)'
+test_expect_success \
+	"set $m (logged by config)" \
+	'GIT_COMMITTER_DATE="2005-05-26 23:43" \
+	 git-update-ref HEAD $A &&
+	 test $A = $(cat .git/$m)'
+
+cat >expect <<EOF
+$Z $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150320 +0000	Initial Creation
+$A $B $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150380 +0000	Switch
+$B $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150980 +0000
+EOF
+test_expect_success \
+	"verifying $m's log" \
+	'diff expect .git/logs/$m'
+rm -f .git/$m .git/logs/$m expect
+
+git-update-ref $m $D
+cat >.git/logs/$m <<EOF
+$C $A $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150320 -0500
+$A $B $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150380 -0500
+$F $Z $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150680 -0500
+$Z $E $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150980 -0500
+EOF
+
+ed="Thu, 26 May 2005 18:32:00 -0500"
+gd="Thu, 26 May 2005 18:33:00 -0500"
+ld="Thu, 26 May 2005 18:43:00 -0500"
+test_expect_success \
+	'Query "master@{May 25 2005}" (before history)' \
+	'rm -f o e
+	 git-rev-parse --verify "master@{May 25 2005}" >o 2>e &&
+	 test $C = $(cat o) &&
+	 test "warning: Log .git/logs/$m only goes back to $ed." = "$(cat e)"'
+test_expect_success \
+	"Query master@{2005-05-25} (before history)" \
+	'rm -f o e
+	 git-rev-parse --verify master@{2005-05-25} >o 2>e &&
+	 test $C = $(cat o) &&
+	 echo test "warning: Log .git/logs/$m only goes back to $ed." = "$(cat e)"'
+test_expect_success \
+	'Query "master@{May 26 2005 23:31:59}" (1 second before history)' \
+	'rm -f o e
+	 git-rev-parse --verify "master@{May 26 2005 23:31:59}" >o 2>e &&
+	 test $C = $(cat o) &&
+	 test "warning: Log .git/logs/$m only goes back to $ed." = "$(cat e)"'
+test_expect_success \
+	'Query "master@{May 26 2005 23:32:00}" (exactly history start)' \
+	'rm -f o e
+	 git-rev-parse --verify "master@{May 26 2005 23:32:00}" >o 2>e &&
+	 test $A = $(cat o) &&
+	 test "" = "$(cat e)"'
+test_expect_success \
+	'Query "master@{2005-05-26 23:33:01}" (middle of history with gap)' \
+	'rm -f o e
+	 git-rev-parse --verify "master@{2005-05-26 23:33:01}" >o 2>e &&
+	 test $B = $(cat o) &&
+	 test "warning: Log .git/logs/$m has gap after $gd." = "$(cat e)"'
+test_expect_success \
+	'Query "master@{2005-05-26 23:38:00}" (middle of history)' \
+	'rm -f o e
+	 git-rev-parse --verify "master@{2005-05-26 23:38:00}" >o 2>e &&
+	 test $Z = $(cat o) &&
+	 test "" = "$(cat e)"'
+test_expect_success \
+	'Query "master@{2005-05-26 23:43:00}" (exact end of history)' \
+	'rm -f o e
+	 git-rev-parse --verify "master@{2005-05-26 23:43:00}" >o 2>e &&
+	 test $E = $(cat o) &&
+	 test "" = "$(cat e)"'
+test_expect_success \
+	'Query "master@{2005-05-28}" (past end of history)' \
+	'rm -f o e
+	 git-rev-parse --verify "master@{2005-05-28}" >o 2>e &&
+	 test $D = $(cat o) &&
+	 test "warning: Log .git/logs/$m unexpectedly ended on $ld." = "$(cat e)"'
+
+
+rm -f .git/$m .git/logs/$m expect
+
+test_expect_success \
+    'creating initial files' \
+    'echo TEST >F &&
+     git-add F &&
+	 GIT_AUTHOR_DATE="2005-05-26 23:30" \
+	 GIT_COMMITTER_DATE="2005-05-26 23:30" git-commit -m add -a &&
+	 h_TEST=$(git-rev-parse --verify HEAD)
+	 echo The other day this did not work. >M &&
+	 echo And then Bob told me how to fix it. >>M &&
+	 echo OTHER >F &&
+	 GIT_AUTHOR_DATE="2005-05-26 23:41" \
+	 GIT_COMMITTER_DATE="2005-05-26 23:41" git-commit -F M -a &&
+	 h_OTHER=$(git-rev-parse --verify HEAD)
+	 rm -f M'
+
+cat >expect <<EOF
+$Z $h_TEST $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150200 +0000	commit: add
+$h_TEST $h_OTHER $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150860 +0000	commit: The other day this did not work.
+EOF
+test_expect_success \
+	'git-commit logged updates' \
+	'diff expect .git/logs/$m'
+unset h_TEST h_OTHER
+
+test_expect_success \
+	'git-cat-file blob master:F (expect OTHER)' \
+	'test OTHER = $(git-cat-file blob master:F)'
+test_expect_success \
+	'git-cat-file blob master@{2005-05-26 23:30}:F (expect TEST)' \
+	'test TEST = $(git-cat-file blob "master@{2005-05-26 23:30}:F")'
+test_expect_success \
+	'git-cat-file blob master@{2005-05-26 23:42}:F (expect OTHER)' \
+	'test OTHER = $(git-cat-file blob "master@{2005-05-26 23:42}:F")'
+
+test_done
diff --git a/t/t3200-branch.sh b/t/t3200-branch.sh
index c3de151942..5b04efc89d 100755
--- a/t/t3200-branch.sh
+++ b/t/t3200-branch.sh
@@ -14,7 +14,8 @@ test_expect_success \
     'prepare an trivial repository' \
     'echo Hello > A &&
      git-update-index --add A &&
-     git-commit -m "Initial commit."'
+     git-commit -m "Initial commit." &&
+     HEAD=$(git-rev-parse --verify HEAD)'
 
 test_expect_success \
     'git branch --help should return success now.' \
@@ -32,4 +33,32 @@ test_expect_success \
     'git branch a/b/c should create a branch' \
     'git-branch a/b/c && test -f .git/refs/heads/a/b/c'
 
+cat >expect <<EOF
+0000000000000000000000000000000000000000 $HEAD $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150200 +0000	branch: Created from HEAD
+EOF
+test_expect_success \
+    'git branch -l d/e/f should create a branch and a log' \
+	'GIT_COMMITTER_DATE="2005-05-26 23:30" \
+     git-branch -l d/e/f &&
+	 test -f .git/refs/heads/d/e/f &&
+	 test -f .git/logs/refs/heads/d/e/f &&
+	 diff expect .git/logs/refs/heads/d/e/f'
+
+test_expect_success \
+    'git branch -d d/e/f should delete a branch and a log' \
+	'git-branch -d d/e/f &&
+	 test ! -f .git/refs/heads/d/e/f &&
+	 test ! -f .git/logs/refs/heads/d/e/f'
+
+cat >expect <<EOF
+0000000000000000000000000000000000000000 $HEAD $GIT_COMMITTER_NAME <$GIT_COMMITTER_EMAIL> 1117150200 +0000	checkout: Created from master^0
+EOF
+test_expect_success \
+    'git checkout -b g/h/i -l should create a branch and a log' \
+	'GIT_COMMITTER_DATE="2005-05-26 23:30" \
+     git-checkout -b g/h/i -l master &&
+	 test -f .git/refs/heads/g/h/i &&
+	 test -f .git/logs/refs/heads/g/h/i &&
+	 diff expect .git/logs/refs/heads/g/h/i'
+
 test_done