कुछ साल पहले मैंने इस तरह की चीज़ को संभालने के लिए कुछ लिखा था। (सुधार के लिए टिप्पणियाँ निश्चित रूप से स्वागत योग्य हैं, लेकिन बहुत अधिक न्याय न करें - यह बहुत समय पहले था! मैं अभी तक पर्ल को नहीं जानता था!)
यह अधिक स्थिर स्थितियों के लिए है - आप इसे फ़ॉर्म के कॉन्फ़िगरेशन पैरामीटर सेट करके कॉन्फ़िगर करते हैं branch.<branch>.autorebaseparent। यह ऐसी किसी भी शाखा को नहीं छूएगा जिसके पास वह विन्यास पैरामीटर सेट नहीं है। यदि वह नहीं है जो आप चाहते हैं, तो आप संभवतः उसे हैक कर सकते हैं जहां आप इसे बहुत अधिक परेशानी के बिना चाहते हैं। मैंने पिछले वर्ष या दो में वास्तव में इसका अधिक उपयोग नहीं किया है, लेकिन जब मैंने इसका उपयोग किया, तो यह हमेशा काफी सुरक्षित और स्थिर लग रहा था, जैसा कि बड़े पैमाने पर स्वचालित रिबासिंग के साथ संभव है।
तो यहाँ है। इसे git-auto-rebaseअपने नामक एक फ़ाइल में सहेज कर उपयोग करें PATH। -nअसली रन के लिए प्रयास करने से पहले ड्राई रन ( ) विकल्प का उपयोग करना भी शायद एक अच्छा विचार है । यह वास्तव में आप चाहते हैं की तुलना में थोड़ा अधिक विस्तार हो सकता है, लेकिन यह आपको दिखाएगा कि यह क्या करने की कोशिश कर रहा है, और किस पर। आपको कुछ दुःख से बचा सकता है।
#!/bin/bash
CACHE_DIR=.git/auto-rebase
TODO=$CACHE_DIR/todo
TODO_BACKUP=$CACHE_DIR/todo.backup
COMPLETED=$CACHE_DIR/completed
ORIGINAL_BRANCH=$CACHE_DIR/original_branch
REF_NAMESPACE=refs/pre-auto-rebase
print_help() {
echo "Usage: git auto-rebase [opts]"
echo "Options:"
echo " -n dry run"
echo " -c continue previous auto-rebase"
echo " -a abort previous auto-rebase"
echo " (leaves completed rebases intact)"
}
cleanup_autorebase() {
rm -rf $CACHE_DIR
if [ -n "$dry_run" ]; then
# The dry run should do nothing here. It doesn't create refs, and won't
# run unless auto-rebase is empty. Leave this here to catch programming
# errors, and for possible future -f option.
git for-each-ref --format="%(refname)" $REF_NAMESPACE |
while read ref; do
echo git update-ref -d $ref
done
else
git for-each-ref --format="%(refname)" $REF_NAMESPACE |
while read ref; do
git update-ref -d $ref
done
fi
}
# Get the rebase relationships from branch.*.autorebaseparent
get_config_relationships() {
mkdir -p .git/auto-rebase
# We cannot simply read the indicated parents and blindly follow their
# instructions; they must form a directed acyclic graph (like git!) which
# furthermore has no sources with two sinks (i.e. a branch may not be
# rebased onto two others).
#
# The awk script checks for cycles and double-parents, then sorts first by
# depth of hierarchy (how many parents it takes to get to a top-level
# parent), then by parent name. This means that all rebasing onto a given
# parent happens in a row - convenient for removal of cached refs.
IFS=$'\n'
git config --get-regexp 'branch\..+\.autorebaseparent' | \
awk '{
child=$1
sub("^branch[.]","",child)
sub("[.]autorebaseparent$","",child)
if (parent[child] != 0) {
print "Error: branch "child" has more than one parent specified."
error=1
exit 1
}
parent[child]=$2
}
END {
if ( error != 0 )
exit error
# check for cycles
for (child in parent) {
delete cache
depth=0
cache[child]=1
cur=child
while ( parent[cur] != 0 ) {
depth++
cur=parent[cur]
if ( cache[cur] != 0 ) {
print "Error: cycle in branch."child".autorebaseparent hierarchy detected"
exit 1
} else {
cache[cur]=1
}
}
depths[child]=depth" "parent[child]" "child
}
n=asort(depths, children)
for (i=1; i<=n; i++) {
sub(".* ","",children[i])
}
for (i=1; i<=n; i++) {
if (parent[children[i]] != 0)
print parent[children[i]],children[i]
}
}' > $TODO
# Check for any errors. If the awk script's good, this should really check
# exit codes.
if grep -q '^Error:' $TODO; then
cat $TODO
rm -rf $CACHE_DIR
exit 1
fi
cp $TODO $TODO_BACKUP
}
# Get relationships from config, or if continuing, verify validity of cache
get_relationships() {
if [ -n "$continue" ]; then
if [ ! -d $CACHE_DIR ]; then
echo "Error: You requested to continue a previous auto-rebase, but"
echo "$CACHE_DIR does not exist."
exit 1
fi
if [ -f $TODO -a -f $TODO_BACKUP -a -f $ORIGINAL_BRANCH ]; then
if ! cat $COMPLETED $TODO | diff - $TODO_BACKUP; then
echo "Error: You requested to continue a previous auto-rebase, but the cache appears"
echo "to be invalid (completed rebases + todo rebases != planned rebases)."
echo "You may attempt to manually continue from what is stored in $CACHE_DIR"
echo "or remove it with \"git auto-rebase -a\""
exit 1
fi
else
echo "Error: You requested to continue a previous auto-rebase, but some cached files"
echo "are missing."
echo "You may attempt to manually continue from what is stored in $CACHE_DIR"
echo "or remove it with \"git auto-rebase -a\""
exit 1
fi
elif [ -d $CACHE_DIR ]; then
echo "A previous auto-rebase appears to have been left unfinished."
echo "Either continue it with \"git auto-rebase -c\" or remove the cache with"
echo "\"git auto-rebase -a\""
exit 1
else
get_config_relationships
fi
}
# Verify that desired branches exist, and pre-refs do not.
check_ref_existence() {
local parent child
for pair in "${pairs[@]}"; do
parent="${pair% *}"
if ! git show-ref -q --verify "refs/heads/$parent" > /dev/null ; then
if ! git show-ref -q --verify "refs/remotes/$parent" > /dev/null; then
child="${pair#* }"
echo "Error: specified parent branch $parent of branch $child does not exist"
exit 1
fi
fi
if [ -z "$continue" ]; then
if git show-ref -q --verify "$REF_NAMESPACE/$parent" > /dev/null; then
echo "Error: ref $REF_NAMESPACE/$parent already exists"
echo "Most likely a previous git-auto-rebase did not complete; if you have fixed all"
echo "necessary rebases, you may try again after removing it with:"
echo
echo "git update-ref -d $REF_NAMESPACE/$parent"
echo
exit 1
fi
else
if ! git show-ref -q --verify "$REF_NAMESPACE/$parent" > /dev/null; then
echo "Error: You requested to continue a previous auto-rebase, but the required"
echo "cached ref $REF_NAMESPACE/$parent is missing."
echo "You may attempt to manually continue from the contents of $CACHE_DIR"
echo "and whatever refs in refs/$REF_NAMESPACE still exist, or abort the previous"
echo "auto-rebase with \"git auto-rebase -a\""
exit 1
fi
fi
done
}
# Create the pre-refs, storing original position of rebased parents
create_pre_refs() {
local parent prev_parent
for pair in "${pairs[@]}"; do
parent="${pair% *}"
if [ "$prev_parent" != "$parent" ]; then
if [ -n "$dry_run" ]; then
echo git update-ref "$REF_NAMESPACE/$parent" "$parent" \"\"
else
if ! git update-ref "$REF_NAMESPACE/$parent" "$parent" ""; then
echo "Error: cannot create ref $REF_NAMESPACE/$parent"
exit 1
fi
fi
fi
prev_parent="$parent"
done
}
# Perform the rebases, updating todo/completed as we go
perform_rebases() {
local prev_parent parent child
for pair in "${pairs[@]}"; do
parent="${pair% *}"
child="${pair#* }"
# We do this *before* rebasing, assuming most likely any failures will be
# fixed with rebase --continue, and therefore should not be attempted again
head -n 1 $TODO >> $COMPLETED
sed -i '1d' $TODO
if [ -n "$dry_run" ]; then
echo git rebase --onto "$parent" "$REF_NAMESPACE/$parent" "$child"
echo "Successfully rebased $child onto $parent"
else
echo git rebase --onto "$parent" "$REF_NAMESPACE/$parent" "$child"
if ( git merge-ff -q "$child" "$parent" 2> /dev/null && echo "Fast-forwarded $child to $parent." ) || \
git rebase --onto "$parent" "$REF_NAMESPACE/$parent" "$child"; then
echo "Successfully rebased $child onto $parent"
else
echo "Error rebasing $child onto $parent."
echo 'You should either fix it (end with git rebase --continue) or abort it, then use'
echo '"git auto-rebase -c" to continue. You may also use "git auto-rebase -a" to'
echo 'abort the auto-rebase. Note that this will not undo already-completed rebases.'
exit 1
fi
fi
prev_parent="$parent"
done
}
rebase_all_intelligent() {
if ! git rev-parse --show-git-dir &> /dev/null; then
echo "Error: git-auto-rebase must be run from inside a git repository"
exit 1
fi
SUBDIRECTORY_OK=1
. "$(git --exec-path | sed 's/:/\n/' | grep -m 1 git-core)"/git-sh-setup
cd_to_toplevel
# Figure out what we need to do (continue, or read from config)
get_relationships
# Read the resulting todo list
OLDIFS="$IFS"
IFS=$'\n'
pairs=($(cat $TODO))
IFS="$OLDIFS"
# Store the original branch
if [ -z "$continue" ]; then
git symbolic-ref HEAD | sed 's@refs/heads/@@' > $ORIGINAL_BRANCH
fi
check_ref_existence
# These three depend on the pairs array
if [ -z "$continue" ]; then
create_pre_refs
fi
perform_rebases
echo "Returning to original branch"
if [ -n "$dry_run" ]; then
echo git checkout $(cat $ORIGINAL_BRANCH)
else
git checkout $(cat $ORIGINAL_BRANCH) > /dev/null
fi
if diff -q $COMPLETED $TODO_BACKUP ; then
if [ "$(wc -l $TODO | cut -d" " -f1)" -eq 0 ]; then
cleanup_autorebase
echo "Auto-rebase complete"
else
echo "Error: todo-rebases not empty, but completed and planned rebases match."
echo "This should not be possible, unless you hand-edited a cached file."
echo "Examine $TODO, $TODO_BACKUP, and $COMPLETED to determine what went wrong."
exit 1
fi
else
echo "Error: completed rebases don't match planned rebases."
echo "Examine $TODO_BACKUP and $COMPLETED to determine what went wrong."
exit 1
fi
}
while getopts "nca" opt; do
case $opt in
n ) dry_run=1;;
c ) continue=1;;
a ) abort=1;;
* )
echo "git-auto-rebase is too dangerous to run with invalid options; exiting"
print_help
exit 1
esac
done
shift $((OPTIND-1))
case $# in
0 )
if [ -n "$abort" ]; then
cleanup_autorebase
else
rebase_all_intelligent
fi
;;
* )
print_help
exit 1
;;
esac
एक चीज जो मैंने पाई है, क्योंकि मैंने मूल रूप से इसे संबोधित किया है, वह यह है कि कभी-कभी इसका उत्तर यह है कि आप वास्तव में बिल्कुल भी नहीं चाहते हैं कि आप इसे फिर से बना सकें! पहली जगह में सही सामान्य पूर्वज पर विषय शाखाएं शुरू करने के लिए कुछ कहा जाना है, और उसके बाद उन्हें आगे बढ़ने की कोशिश नहीं करना है। लेकिन यह आपके और आपके वर्कफ़्लो के बीच है।