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#!/usr/bin/env bash
# Copyright (c) 2016 Egor Tensin <Egor.Tensin@gmail.com>
# This file is part of the "Configuration file sharing" project.
# For details, see https://github.com/egor-tensin/config-links.
# Distributed under the MIT License.
# This script relies on the availability of native symlinks.
# Those are indeed supported by NTFS, but require Administrator privileges for
# creation.
# It likely won't bother you as long as you don't use the functions defined in
# this file.
# In any case, you will see `ln` complaining about some access being denied in
# case something goes wrong.
#
# Remember that in order to force `ln` to use native NTFS symlinks, your
# `CYGWIN` Windows environment variable value **must** include either
# `winsymlinks:native` or `winsymlinks:nativestrict`!
# usage: ./update.sh [-h|--help] [-d|--database PATH] [-s|--shared-dir DIR] [-n|--dry-run]
set -o errexit
set -o nounset
set -o pipefail
script_name="$( basename -- "${BASH_SOURCE[0]}" )"
readonly script_name
script_dir="$( dirname -- "${BASH_SOURCE[0]}" )"
script_dir="$( cd -- "$script_dir" && pwd )"
readonly script_dir
src_dir="$( cd -- "$script_dir/../src" && pwd )"
readonly src_dir
. "$src_dir/common.sh"
. "$src_dir/path.sh"
. "$src_dir/vars.sh"
. "$src_dir/db.sh"
# Cygwin-related stuff
os="$( uname -o )"
readonly os
is_cygwin() {
test "$os" == 'Cygwin'
}
check_symlinks_enabled_cygwin() {
case "${CYGWIN-}" in
*winsymlinks:native*) ;;
*winsymlinks:nativestrict*) ;;
*)
dump "native Windows symlinks aren't enabled in Cygwin" >&2
return 1
;;
esac
}
# Main routines
script_usage() {
local msg
for msg; do
echo "$script_name: $msg"
done
echo "usage: $script_name [-h|--help] [-d|--database PATH] [-s|--shared-dir DIR] [-n|--dry-run]
-h,--help show this message and exit
-d,--database set database file path
-s,--shared-dir set top-level shared directory path
(current working directory by default)
-n,--dry-run don't actually do anything intrusive"
}
parse_script_options() {
while [ "$#" -gt 0 ]; do
local key="$1"
shift
case "$key" in
-h|--help)
script_usage
exit 0
;;
-n|--dry-run)
set_dry_run
continue
;;
-d|--database|-s|--shared-dir)
;;
*)
script_usage "unrecognized parameter: $key" >&2
exit 1
;;
esac
if [ "$#" -eq 0 ]; then
script_usage "missing argument for parameter: $key" >&2
exit 1
fi
local value="$1"
shift
case "$key" in
-d|--database)
update_database_path "$value"
;;
-s|--shared-dir)
update_shared_dir "$value"
;;
*)
script_usage "unrecognized parameter: $key" >&2
exit 1
;;
esac
done
}
check_symlinks_enabled() {
if is_cygwin; then
check_symlinks_enabled_cygwin
else
return 0
fi
}
main() {
parse_script_options "$@"
check_symlinks_enabled
ensure_database_exists
read_database
delete_obsolete_entries
discover_new_entries
write_database
}
main "$@"
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