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authorEgor Tensin <Egor.Tensin@gmail.com>2019-08-07 20:45:05 +0300
committerEgor Tensin <Egor.Tensin@gmail.com>2019-08-07 20:45:05 +0300
commitd34e78f86a71523f8992453b578e3e016f572a5a (patch)
treee2331fdc5b2c7099a2fdb00b70450271c3a654fb /bin/update.sh
parentsupport a dumb variable for root path / (diff)
downloadconfig-links-d34e78f86a71523f8992453b578e3e016f572a5a.tar.gz
config-links-d34e78f86a71523f8992453b578e3e016f572a5a.zip
split update.sh into multiple files
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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 "$@"