dash/test/lint/commit-script-check.sh
Wladimir J. van der Laan 31924dbd30 Merge #14864: test: Run scripted-diff in subshell
43f909990190b3ff7883f0b2c117daa876d8fd99 scripted-diff: Run scripted-diff in subshell (Carl Dong)

Pull request description:

  scripted-diffs should be run in subshells so that their execution does not
  affect the shell variables of commit-script-check. Shell variables are not
  unset before evaluating the scripted-diff, so that they might be used in
  the subshell. To this end, the variable previously named i is now more
  descriptively named commit, this also allows scripted-diffs to use the
  commonly used variable i without fear of losing a reference to the
  commit.

Tree-SHA512: 0d86c069c2a978ca07d71bcd2b1b273e9bfabfe7e31a50c7b1b860e04f178b81c65814c3a38fb01e50b41a5065b646f0dab5b05d9be71138e72d4baba607e37b
2021-08-15 11:08:08 -04:00

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#!/bin/sh
# Copyright (c) 2017 The Bitcoin Core developers
# Distributed under the MIT software license, see the accompanying
# file COPYING or http://www.opensource.org/licenses/mit-license.php.
# This simple script checks for commits beginning with: scripted-diff:
# If found, looks for a script between the lines -BEGIN VERIFY SCRIPT- and
# -END VERIFY SCRIPT-. If no ending is found, it reads until the end of the
# commit message.
# The resulting script should exactly transform the previous commit into the current
# one. Any remaining diff signals an error.
export LC_ALL=C
if test -z "$1"; then
echo "Usage: $0 <commit>..."
exit 1
fi
RET=0
PREV_BRANCH=`git name-rev --name-only HEAD`
PREV_HEAD=`git rev-parse HEAD`
for commit in `git rev-list --reverse $1`; do
if git rev-list -n 1 --pretty="%s" $commit | grep -q "^scripted-diff:"; then
git checkout --quiet $commit^ || exit
SCRIPT="`git rev-list --format=%b -n1 $commit | sed '/^-BEGIN VERIFY SCRIPT-$/,/^-END VERIFY SCRIPT-$/{//!b};d'`"
if test -z "$SCRIPT"; then
echo "Error: missing script for: $commit"
echo "Failed"
RET=1
else
echo "Running script for: $commit"
echo "$SCRIPT"
(eval "$SCRIPT")
git --no-pager diff --exit-code $commit && echo "OK" || (echo "Failed"; false) || RET=1
fi
git reset --quiet --hard HEAD
else
if git rev-list "--format=%b" -n1 $commit | grep -q '^-\(BEGIN\|END\)[ a-zA-Z]*-$'; then
echo "Error: script block marker but no scripted-diff in title"
echo "Failed"
RET=1
fi
fi
done
git checkout --quiet $PREV_BRANCH 2>/dev/null || git checkout --quiet $PREV_HEAD
exit $RET