1 #!/usr/bin/env bash
2 # Copyright (c) 2017-present The Bitcoin Core developers
3 # Distributed under the MIT software license, see the accompanying
4 # file COPYING or http://www.opensource.org/licenses/mit-license.php.
5 6 # This simple script checks for commits beginning with: scripted-diff:
7 # If found, looks for a script between the lines -BEGIN VERIFY SCRIPT- and
8 # -END VERIFY SCRIPT-. If no ending is found, it reads until the end of the
9 # commit message.
10 11 # The resulting script should exactly transform the previous commit into the current
12 # one. Any remaining diff signals an error.
13 14 export LC_ALL=C
15 if test -z "$1"; then
16 echo "Usage: $0 <commit>..."
17 exit 1
18 fi
19 20 if ! sed --help 2>&1 | grep -q 'GNU'; then
21 echo "Error: the installed sed package is not compatible. Please make sure you have GNU sed installed in your system.";
22 exit 1;
23 fi
24 25 if ! grep --help 2>&1 | grep -q 'GNU'; then
26 echo "Error: the installed grep package is not compatible. Please make sure you have GNU grep installed in your system.";
27 exit 1;
28 fi
29 30 RET=0
31 PREV_BRANCH=$(git name-rev --name-only HEAD)
32 PREV_HEAD=$(git rev-parse HEAD)
33 for commit in $(git rev-list --reverse "$1"); do
34 if git rev-list -n 1 --pretty="%s" "$commit" | grep -q "^scripted-diff:"; then
35 git checkout --quiet "$commit"^ || exit
36 SCRIPT="$(git rev-list --format=%b -n1 "$commit" | sed '/^-BEGIN VERIFY SCRIPT-$/,/^-END VERIFY SCRIPT-$/{//!b};d')"
37 if test -z "$SCRIPT"; then
38 echo "Error: missing script for: $commit" >&2
39 echo "Failed" >&2
40 RET=1
41 else
42 echo "Running script for: $commit" >&2
43 echo "$SCRIPT" >&2
44 if bash -o errexit -o nounset -o pipefail -c "$SCRIPT" && git --no-pager diff --exit-code "$commit"; then
45 echo "OK" >&2
46 else
47 echo "Failed" >&2
48 RET=1
49 fi
50 fi
51 git reset --quiet --hard HEAD
52 else
53 if git rev-list "--format=%b" -n1 "$commit" | grep -q '^-\(BEGIN\|END\)[ a-zA-Z]*-$'; then
54 echo "Error: script block marker but no scripted-diff in title of commit $commit" >&2
55 echo "Failed" >&2
56 RET=1
57 fi
58 fi
59 done
60 git checkout --quiet "$PREV_BRANCH" 2>/dev/null || git checkout --quiet "$PREV_HEAD"
61 exit $RET
62