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pull_from_blockly.sh
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pull_from_blockly.sh
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#!/bin/bash
# Pull from Blockly into Scratch Blocks and do basic cleanup.
# Rachel Fenichel (fenichel@google.com)
BOLD='\e[1m'
NOBOLD='\e[21m'
# Formatting helper.
empty_lines() { printf '\n\n'; }
bold_echo() {
echo -e "${BOLD}$1${NOBOLD}"
}
stop_on_fail() {
# Fail if any command fails.
set -e
# Even if you're piping the output.
set -o pipefail
}
# Undo the effects of start_failing.
continue_on_fail() {
set +e
set +o pipefail
}
# Prompt for y/n and put the result in $prompt_result
# The first argument specifies the text to use in the prompt.
# The second argument specifies which value to use if we're skipping prompts.
prompt() {
if [ $with_prompts ]
then
if [ $2 = true ]
then
paren_text="(Y/n)"
else
paren_text="(y/N)"
fi
# Prompt the user and retry if they try any funny business.
while true; do
read -p "$1 $paren_text > " yn
case $yn in
[Yy]* ) prompt_result=true; break;;
[Nn]* ) prompt_result=false; break;;
* ) echo "Please answer yes or no.";;
esac
done
else
# Running without prompts. Use the default value.
prompt_result=$2;
fi
}
# Ask the user for confirmation, then pull from Blockly's develop branch.
# The default is to do the pull.
pull_from_develop_fn() {
empty_lines
prompt "Do you want to pull from develop?" true
if [ $prompt_result = false ]
then
bold_echo "You don't want to pull from develop. Why are you running this script?"
exit
fi
bold_echo "Pulling from Blockly's develop branch"
sleep .5
# This pull will likely fail with merge conflicts, but that's okay.
# However, this means that we won't fail on errors other than merge conflicts.
continue_on_fail
git pull https://github.com/google/blockly.git develop
stop_on_fail
}
# Ask the user for confirmation, then run cleanup.
# The default is to run cleanup.
run_cleanup_fn() {
empty_lines
prompt "Ready to run cleanup.sh. Continue?" true
if [ $prompt_result = false ]
then
bold_echo "Skipping cleanup.sh"
prompt_for_merge_abort
empty_lines
bold_echo "Done"
exit
fi
bold_echo "Running cleanup.sh"
sleep .5
# Cleanup.sh resolves common conflicts.
./cleanup.sh
}
# Ask the user for confirmation, then possibly abort the merge.
# The default is to *not* abort the merge.
# Used to clean up the repo instead of leaving it in a bad state.
prompt_for_merge_abort() {
empty_lines
prompt "Do you want to abort this merge?" false
if [ $prompt_result = false ]
then
bold_echo "Continuing with merge..."
else
bold_echo "Running git merge --abort"
git merge --abort
display_status_fn
bold_echo "Done"
exit
fi
}
# Ask the user for confirmation, then show the current repo status.
# The default to to show status.
display_status_fn() {
empty_lines
prompt "Do you want to display the current status?" true
if [ $prompt_result = true ]
then
# Tell the user the current state.
bold_echo "Current status"
sleep .5
git status
else
bold_echo "Skipping status display."
fi
}
# Give the user one more chance to abort the merge, then tell them what their
# next steps should be.
finish_fn() {
prompt_for_merge_abort
bold_echo "Done. You may need to manually resolve conflicts."
# Helpful tips about what to do next.
empty_lines
sleep .5
echo "Fix conflicts and run 'git commit'."
echo "Use 'git add <file>' to mark resolution."
echo "Use 'git merge --abort' to abort this merge."
}
# Check whether we're running with prompts. If unset, we'll skip all prompts.
with_prompts=$1
# Here we go!
stop_on_fail
pull_from_develop_fn
run_cleanup_fn
display_status_fn
finish_fn