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#! /bin/sh
#
# Fix multiline comments to match docs/devel/style.rst
#
# Copyright (C) 2018 Red Hat, Inc.
#
# Author: Paolo Bonzini
#
# Usage: scripts/fix-multiline-comments.sh [-i] FILE...
#
# -i edits the file in place (requires gawk 4.1.0).
#
# Set the AWK environment variable to choose the awk interpreter to use
# (default 'awk')
if test "$1" = -i; then
# gawk extension
inplace="-i inplace"
shift
fi
${AWK-awk} $inplace 'BEGIN { indent = -1 }
{
line = $0
# apply a star to the indent on lines after the first
if (indent != -1) {
if (line == "") {
line = sp " *"
} else if (substr(line, 1, indent + 2) == sp " ") {
line = sp " *" substr(line, indent + 3)
}
}
is_lead = (line ~ /^[ \t]*\/\*/)
is_trail = (line ~ /\*\//)
if (is_lead && !is_trail) {
# grab the indent at the start of a comment, but not for
# single-line comments
match(line, /^[ \t]*\/\*/)
indent = RLENGTH - 2
sp = substr(line, 1, indent)
}
# the regular expression filters out lone /*, /**, or */
if (indent != -1 && !(line ~ /^[ \t]*(\/\*+|\*\/)[ \t]*$/)) {
if (is_lead) {
# split the leading /* or /** on a separate line
match(line, /^[ \t]*\/\*+/)
lead = substr(line, 1, RLENGTH)
match(line, /^[ \t]*\/\*+[ \t]*/)
line = lead "\n" sp " *" substr(line, RLENGTH)
}
if (is_trail) {
# split the trailing */ on a separate line
match(line, /[ \t]*\*\//)
line = substr(line, 1, RSTART - 1) "\n" sp " */"
}
}
if (is_trail) {
indent = -1
}
print line
}' "$@"
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