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bisect: use "bisect--helper" and remove "filter_skipped" function

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Use the new "git bisect--helper" builtin. It should be faster and
safer instead of the old "filter_skipped" shell function. And it
is a first step to move more shell code to C.

As the output is a little bit different we have to change the code
that interpret the results. But these changes improve code clarity.

Signed-off-by: Christian Couder <chriscool@tuxfamily.org>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
Christian Couder 2009-03-26 05:56:02 +01:00 committed by Junio C Hamano
parent 3b437b0dab
commit 23b5f18b50
1 changed files with 12 additions and 77 deletions
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89
git-bisect.sh
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@ -279,76 +279,13 @@ bisect_auto_next() {
bisect_next_check && bisect_next || :
}
filter_skipped() {
eval_and_string_together() {
_eval="$1"
_skip="$2"
if [ -z "$_skip" ]; then
eval "$_eval" | {
while read line
do
echo "$line &&"
done
echo ':'
}
return
fi
# Let's parse the output of:
# "git rev-list --bisect-vars --bisect-all ..."
eval "$_eval" | {
VARS= FOUND= TRIED=
while read hash line
while read line
do
case "$VARS,$FOUND,$TRIED,$hash" in
1,*,*,*)
# "bisect_foo=bar" read from rev-list output.
echo "$hash &&"
;;
,*,*,---*)
# Separator
;;
,,,bisect_rev*)
# We had nothing to search.
echo "bisect_rev= &&"
VARS=1
;;
,,*,bisect_rev*)
# We did not find a good bisect rev.
# This should happen only if the "bad"
# commit is also a "skip" commit.
echo "bisect_rev='$TRIED' &&"
VARS=1
;;
,,*,*)
# We are searching.
TRIED="${TRIED:+$TRIED|}$hash"
case "$_skip" in
*$hash*) ;;
*)
echo "bisect_rev=$hash &&"
echo "bisect_tried='$TRIED' &&"
FOUND=1
;;
esac
;;
,1,*,bisect_rev*)
# We have already found a rev to be tested.
VARS=1
;;
,1,*,*)
;;
*)
# Unexpected input
echo "die 'filter_skipped error'"
die "filter_skipped error " \
"VARS: '$VARS' " \
"FOUND: '$FOUND' " \
"TRIED: '$TRIED' " \
"hash: '$hash' " \
"line: '$line'"
;;
esac
echo "$line &&"
done
echo ':'
}
@ -356,10 +293,12 @@ filter_skipped() {
exit_if_skipped_commits () {
_tried=$1
if expr "$_tried" : ".*[|].*" > /dev/null ; then
_bad=$2
if test -n "$_tried" ; then
echo "There are only 'skip'ped commit left to test."
echo "The first bad commit could be any of:"
echo "$_tried" | tr '[|]' '[\012]'
test -n "$_bad" && echo "$_bad"
echo "We cannot bisect more!"
exit 2
fi
@ -490,28 +429,24 @@ bisect_next() {
test "$?" -eq "1" && return
# Get bisection information
BISECT_OPT=''
test -n "$skip" && BISECT_OPT='--bisect-all'
eval="git rev-list --bisect-vars $BISECT_OPT $good $bad --" &&
eval="$eval $(cat "$GIT_DIR/BISECT_NAMES")" &&
eval=$(filter_skipped "$eval" "$skip") &&
eval="git bisect--helper --next-vars" &&
eval=$(eval_and_string_together "$eval") &&
eval "$eval" || exit
if [ -z "$bisect_rev" ]; then
# We should exit here only if the "bad"
# commit is also a "skip" commit (see above).
exit_if_skipped_commits "$bisect_tried"
echo "$bad was both good and bad"
exit 1
fi
if [ "$bisect_rev" = "$bad" ]; then
exit_if_skipped_commits "$bisect_tried"
exit_if_skipped_commits "$bisect_tried" "$bad"
echo "$bisect_rev is first bad commit"
git diff-tree --pretty $bisect_rev
exit 0
fi
# We should exit here only if the "bad"
# commit is also a "skip" commit (see above).
exit_if_skipped_commits "$bisect_rev"
bisect_checkout "$bisect_rev" "$bisect_nr revisions left to test after this (roughly $bisect_steps steps)"
}