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-rw-r--r--update.sh79
1 files changed, 58 insertions, 21 deletions
diff --git a/update.sh b/update.sh
index 0e460d9..8cfc7f5 100644
--- a/update.sh
+++ b/update.sh
@@ -26,8 +26,6 @@ set -o pipefail
script_argv0="${BASH_SOURCE[0]}"
script_dir="$( cd "$( dirname "$script_argv0" )" && pwd )"
-src_dir="$script_dir"
-
dump() {
local prefix="${FUNCNAME[0]}"
@@ -40,7 +38,23 @@ dump() {
shift
done
}
-
+
+src_dir="$script_dir"
+
+update_src_dir() {
+ if [ "$#" -ne 1 ]; then
+ echo "usage: ${FUNCNAME[0]} DIR" || true
+ return 1
+ fi
+
+ src_dir="$( readlink --canonicalize-existing "$1" )"
+
+ if [ ! -d "$src_dir" ]; then
+ dump "must be a directory: $src_dir" >&2
+ return 1
+ fi
+}
+
ensure_symlinks_enabled() {
case "${CYGWIN:-}" in
*winsymlinks:native*) ;;
@@ -56,6 +70,20 @@ ensure_symlinks_enabled() {
database_path="$src_dir/db.bin"
declare -A database
+update_database_path() {
+ if [ "$#" -ne 1 ]; then
+ echo "usage: ${FUNCNAME[0]} PATH" || true
+ return 1
+ fi
+
+ database_path="$( readlink --canonicalize "$1" )"
+
+ if [ -e "$database_path" ] && [ ! -f "$database_path" ]; then
+ dump "must be a regular file: $database_path" >&2
+ return 1
+ fi
+}
+
ensure_database_exists() {
[ -f "$database_path" ] || touch "$database_path"
}
@@ -83,15 +111,15 @@ write_database() {
delete_obsolete_dirs() {
if [ $# -ne 2 ]; then
- echo "usage: ${FUNCNAME[0]} BASE_DIR DIR"
+ echo "usage: ${FUNCNAME[0]} BASE_DIR DIR" || true
return 1
fi
local base_dir="$1"
local dir="$2"
- base_dir="$( readlink -m "$base_dir" )"
- dir="$( readlink -m "$dir" )"
+ base_dir="$( readlink --canonicalize-missing "$base_dir" )"
+ dir="$( readlink --canonicalize-missing "$dir" )"
if [ ! -d "$base_dir" ]; then
dump "base directory doesn't exist: $base_dir" >&2
@@ -113,7 +141,7 @@ delete_obsolete_dirs() {
return 0
fi
- ( cd "$base_dir" && rmdir -p "$subpath" --ignore-fail-on-non-empty )
+ ( cd "$base_dir" && rmdir --parents "$subpath" --ignore-fail-on-non-empty )
}
delete_obsolete_entries() {
@@ -137,7 +165,7 @@ delete_obsolete_entries() {
fi
local dest_var_dir
- dest_var_dir="$( readlink -m "$( cygpath "${!var_name}" )" )"
+ dest_var_dir="$( readlink --canonicalize-missing "$( cygpath "${!var_name}" )" )"
local src_var_dir="$script_dir/%$var_name%"
local subpath="${entry#%$var_name%/}"
@@ -155,7 +183,7 @@ delete_obsolete_entries() {
dump " missing source file: $src_path" >&2
if [ -z "${dry_run+x}" ]; then
- rm -f "$dest_path"
+ rm --force "$dest_path"
else
dump ' won'"'"'t delete an obsolete symlink, because it'"'"'s a dry run'
fi
@@ -176,7 +204,7 @@ delete_obsolete_entries() {
fi
local target_path
- target_path="$( readlink -e "$dest_path" )"
+ target_path="$( readlink --canonicalize-existing "$dest_path" )"
if [ "$target_path" != "$src_path" ]; then
dump " points to a wrong file: $dest_path" >&2
@@ -206,7 +234,7 @@ discover_new_entries() {
fi
local dest_var_dir
- dest_var_dir="$( readlink -m "$( cygpath "${!var_name}" )" )"
+ dest_var_dir="$( readlink --canonicalize-missing "$( cygpath "${!var_name}" )" )"
dump " destination directory: $dest_var_dir"
local src_path
@@ -224,8 +252,8 @@ discover_new_entries() {
dump " destination file: $dest_path"
if [ -z "${dry_run+x}" ]; then
- mkdir -p "$( dirname "$dest_path" )"
- ln --force -s "$src_path" "$dest_path"
+ mkdir --parents "$( dirname "$dest_path" )"
+ ln --force --symbolic "$src_path" "$dest_path"
else
dump ' won'"'"'t create a symlink because it'"'"'s a dry run'
fi
@@ -237,12 +265,15 @@ discover_new_entries() {
}
exit_with_usage() {
- dump "usage: $script_argv0 [-d|--database PATH] [-s|--source DIR] [-n|--dry-run] [-h|--help]"
- dump 'optional parameters:'
- dump ' -h,--help show this message and exit'
- dump ' -d,--database set database file path'
- dump ' -s,--source set source directory path (script directory by default)'
- dump ' -n,--dry-run don'"'"'t actually do anything intrusive'
+ local msg
+ IFS= read -d '' -r msg <<MSG || echo -n "$msg" || true
+usage: $script_argv0 [-d|--database PATH] [-s|--source DIR] [-n|--dry-run] [-h|--help]
+optional parameters:
+ -h,--help show this message and exit
+ -d,--database set database file path
+ -s,--source set source directory path (script directory by default)
+ -n,--dry-run don't actually do anything intrusive
+MSG
exit "${exit_with_usage:-0}"
}
@@ -283,11 +314,17 @@ parse_script_options() {
case "$key" in
-d|--database)
- database_path="$( readlink -f "$value" )"
+ update_database_path "$value"
;;
-s|--source)
- src_dir="$( readlink -e "$value" )"
+ update_src_dir "$value"
+ ;;
+
+ *)
+ dump "usage error: unrecognized parameter: $key" >&2
+ exit_with_usage=1
+ break
;;
esac
done