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#!/bin/sh
# Copyright (C) 2020-2021 Internet Systems Consortium, Inc. ("ISC")
#
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
# Usage:
#
# ./tools/print-generated-files.sh [-d|--debug] [-h|--help] [-a|--amend]
#
# Run from the root of the repository to get the list of generated files. They
# may or may not be part of the repository. These consist of messages, parser
# files and built sources (as called in Makefile.am files). While messages and
# parser files are included with the source files, the built sources are only
# created when building or some of them included in the Kea installation.
# shellcheck disable=SC2039
# SC2039: In POSIX sh, 'local' is undefined.
# shellcheck disable=SC2013
# SC2013: To read lines rather than words, pipe/redirect to a 'while read' loop.
# reason: `while read` reads lines, we need to read words
# shellcheck disable=SC2044
# SC2044: For loops over find output are fragile. Use find -exec or a while read loop.
# reason: I need to embed complicated logic inside the for, avoiding SC2044
# makes us run into other problems.
# Exit with error if commands exit with non-zero and if undefined variables are
# used.
set -eu
# Print usage.
print_usage() {
printf \
'Usage: %s {{options}}
Options:
[-d|--debug] enable debug mode, showing every executed command
[-h|--help] print usage (this text)
[-a|--amend] amend .gitattributes
' \
"$(basename "${0}")"
}
# Define some ANSI color codes.
if test -t 1; then
red='\033[91m'
reset='\033[0m'
else
red=
reset=
fi
# Parse parameters.
while test ${#} -gt 0; do
case "${1}" in
# [-d|--debug] enable debug mode, showing every executed command
'-d'|'--debug') set -vx ;;
# [-h|--help] print usage (this text)
'-h'|'--help') print_usage ;;
# [-a|--amend] amend .gitattributes
'-a'|'--amend') amend=true ;;
# Unrecognized argument
*)
printf "${red}ERROR: Unrecognized argument '%s'${reset}\\n" "${1}" 1>&2; print_usage; exit 1 ;;
esac; shift
done
# Default parameters
test -z "${amend+x}" && amend=false
# Change directory to root path.
root_path=$(cd "$(dirname "${0}")/.." && pwd)
cd "${root_path}"
# Check if given commands are available and if not, then warn the user that they
# need to be installed for the script to work and then exit with error code.
mandatory_commands() {
while test ${#} -gt 0; do
if ! command -v "${1}" > /dev/null 2>&1; then
printf "${red}%s${reset} is mandatory.\\n" "${1}" >&2
exit 3
fi
shift
done
}
# Print the lines between two matching regex patterns from a file. Excludes the
# lines that contain the patterns themselves. Matches only the first occurrence.
print_lines_between_matching_patterns() {
mandatory_commands sed
local start_pattern="${1}"; shift
local end_pattern="${1}"; shift
local file="${1}"; shift
# Escape all slashes.
start_pattern=$(printf '%s' "${start_pattern}" | sed 's#\/#\\\/#g')
end_pattern=$(printf '%s' "${end_pattern}" | sed 's#\/#\\\/#g')
# Print with sed.
sed -n "/${start_pattern}/,/${end_pattern}/p;/${end_pattern}/q" "${file}" \
| sed '$d' | tail -n +2
}
# Print file name if a file with that name exists.
print_file_name() {
local file_name="${1}"
if test -f "${file_name}"; then
printf '%s\n' "${file_name}" | cut -d '/' -f '2-'
fi
}
# Generated messages
# shellcheck disable=SC1003
# SC1003: Want to escape a single quote? echo 'This is how it'\''s done'
# reason: No, we don't want to escape a single quote, we want a backslash.
print_generated_messages() {
local makefile_am="${1}"; shift
local directory="${1}"; shift
for j in $(grep -F 'messages:' "${makefile_am}" | cut -d ':' -f '2-' | \
cut -d '\' -f 1); do
print_file_name "${directory}/${j}"
done
# Include message files that span multiple lines in the Makefile.am.
for j in $(print_lines_between_matching_patterns 'messages:' '@echo' "${makefile_am}" | \
cut -d ':' -f '2-' | cut -d '\' -f 1); do
print_file_name "${directory}/${j}"
done
}
# Generated parsers
print_generated_parsers() {
local makefile_am="${1}"; shift
local directory="${1}"; shift
for j in $(grep -F 'parser:' "${makefile_am}" | cut -d ':' -f '2-'); do
print_file_name "${directory}/${j}"
done
}
# Other generated files
print_built_sources() {
local makefile_am="${1}"; shift
local directory="${1}"; shift
for j in $(grep -E 'BUILT_SOURCES (=|\+=)' "${makefile_am}" | cut -d '=' -f '2-'); do
print_file_name "${directory}/${j}"
done
}
# Print all files of interest sorted alphabetically.
print_all_sorted() {
local built_sources="${1-true}"
for i in $(find . -type f -name 'Makefile.am'); do
directory=$(dirname "${i}")
print_generated_messages "${i}" "${directory}"
print_generated_parsers "${i}" "${directory}"
if ${built_sources}; then
print_built_sources "${i}" "${directory}"
fi
done | sort -uV
}
mandatory_commands cut find grep sort
if "${amend}"; then
# Write to .gitattributes.
find . -type f -name '.gitattributes' -exec rm -f {} \;
for i in $(print_all_sorted false); do
# Align to 32 characters.
name="/$(basename "${i}")"
length=$(( 32 - ${#name} ))
printf "%s%${length}s -diff merge=ours\\n" "${name}" ' ' >> \
"$(dirname "${i}")/.gitattributes"
done
else
print_all_sorted
fi
|
