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-rwxr-xr-xupdate.sh22
1 files changed, 18 insertions, 4 deletions
diff --git a/update.sh b/update.sh
index ed68420..3c2b0fd 100755
--- a/update.sh
+++ b/update.sh
@@ -126,6 +126,8 @@ resolve_path() {
done < <( readlink -z --canonicalize-missing -- ${paths[@]+"${paths[@]}"} )
}
+# Variable resolution
+
declare -A cached_paths
resolve_variable() {
@@ -136,6 +138,11 @@ resolve_variable() {
local var_name="$1"
+ if [ -n "${cached_paths[$var_name]+x}" ]; then
+ echo "${cached_paths[$var_name]}"
+ return 0
+ fi
+
if [ -z "${!var_name+x}" ]; then
dump "variable is not set: $var_name" >&2
return 1
@@ -145,6 +152,13 @@ resolve_variable() {
resolve_path --exist --directory -- "$var_path"
}
+cache_variable() {
+ local var_name
+ for var_name; do
+ cached_paths[$var_name]="$( resolve_variable "$var_name" )"
+ done
+}
+
check_symlinks_enabled() {
if is_cygwin; then
check_symlinks_enabled_cygwin
@@ -282,10 +296,10 @@ delete_obsolete_entries() {
unset -v 'database[$entry]'
continue
fi
+ cache_variable "$var_name"
local symlink_var_dir
- if ! symlink_var_dir="${cached_paths[$var_name]="$( resolve_variable "$var_name" )"}"; then
- unset -v 'cached_paths[$var_name]'
+ if ! symlink_var_dir="$( resolve_variable "$var_name" )"; then
unset -v 'database[$entry]'
continue
fi
@@ -344,10 +358,10 @@ discover_new_entries() {
var_name="$( basename -- "$shared_var_dir" )"
var_name="$( expr "$var_name" : "$var_name_regex" )"
dump " variable name: $var_name"
+ cache_variable "$var_name"
local symlink_var_dir
- if ! symlink_var_dir="${cached_paths[$var_name]="$( resolve_variable "$var_name" )"}"; then
- unset -v 'cached_paths[$var_name]'
+ if ! symlink_var_dir="$( resolve_variable "$var_name" )"; then
continue
fi
dump " destination directory: $symlink_var_dir"