mirror of
https://gitlab.kitware.com/vtk/vtk-m
synced 2024-10-05 09:59:12 +00:00
70 lines
1.5 KiB
Bash
Executable File
70 lines
1.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Prepare a copy of the message:
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# - strip comment lines
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# - stop at "diff --git" (git commit -v)
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commit_msg="$GIT_DIR/COMMIT_MSG"
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sed -n -e '/^#/d' -e '/^diff --git/q' -e 'p;d' "$1" > "$commit_msg"
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die() {
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echo 'commit-msg hook failure' 1>&2
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echo '-----------------------' 1>&2
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echo '' 1>&2
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echo "$@" 1>&2
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echo 'To continue editing, run the command
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git commit -e -F '"$commit_msg"'
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(assuming your working directory is at the top).' 1>&2
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exit 1
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}
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#-----------------------------------------------------------------------------
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# Check the commit message layout with a simple state machine.
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msg_first() {
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len=$(echo -n "$line" | wc -c)
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if test $len -eq 0; then
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# not yet first line
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return
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elif test $len -lt 8; then
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die 'The first line must be at least 8 characters:
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--------
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'"$line"'
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--------
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'
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elif test $len -gt 78; then
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die 'The first line may be at most 78 characters:
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------------------------------------------------------------------------------
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'"$line"'
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------------------------------------------------------------------------------
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'
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elif echo "$line" | grep "^[ ]\|[ ]$" >/dev/null 2>&1; then
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die 'The first line may not have leading or trailing space:
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['"$line"']
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'
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else
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# first line okay
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state=second
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fi
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}
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msg_second() {
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if test "x$line" != "x"; then
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die 'The second line must be empty:
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'"$line"
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else
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state=rest
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fi
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}
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msg_rest() {
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false
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}
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# Pipe commit message into the state machine.
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state=first
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cat "$commit_msg" |
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while IFS='' read line; do
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msg_$state || break
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done &&
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rm -f "$commit_msg"
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