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-rwxr-xr-xupdate.sh40
1 files changed, 28 insertions, 12 deletions
diff --git a/update.sh b/update.sh
index ea2519f..5ecc00c 100755
--- a/update.sh
+++ b/update.sh
@@ -189,11 +189,11 @@ update_database_path() {
}
ensure_database_exists() {
- [ -f "$db_path" ] || [ -n "${dry_run+x}" ] || touch "$db_path"
+ [ -f "$db_path" ] || is_dry_run || touch "$db_path"
}
read_database() {
- [ ! -f "$db_path" ] && [ -n "${dry_run+x}" ] && return 0
+ [ ! -f "$db_path" ] && is_dry_run && return 0
local entry
while IFS= read -d '' -r entry; do
@@ -202,7 +202,7 @@ read_database() {
}
write_database() {
- if [ -n "${dry_run+x}" ]; then
+ if is_dry_run; then
dump 'won'"'"'t write the database because it'"'"'s a dry run'
return 0
fi
@@ -247,7 +247,7 @@ delete_obsolete_dirs() {
return 1
fi
- if [ -n "${dry_run+x}" ]; then
+ if is_dry_run; then
dump 'won'"'"'t delete the directory because it'"'"'s a dry run'
return 0
fi
@@ -257,16 +257,28 @@ delete_obsolete_dirs() {
readonly var_name_regex='%\([_[:alpha:]][_[:alnum:]]*\)%'
+extract_variable_name() {
+ local s
+ for s; do
+ local var_name
+ var_name="$( expr "$s" : "$var_name_regex/" )"
+
+ if [ -z "$var_name" ]; then
+ dump "couldn't extract variable name from: $s" >&2
+ return 1
+ fi
+
+ echo "$var_name"
+ done
+}
+
delete_obsolete_entries() {
local entry
for entry in "${!database[@]}"; do
dump "entry: $entry"
local var_name
- var_name="$( expr "$entry" : "$var_name_regex/" )"
-
- if [ -z "$var_name" ]; then
- dump ' couldn'"'"'t extract variable name' >&2
+ if ! var_name="$( extract_variable_name "$entry" )"; then
unset -v 'database[$entry]'
continue
fi
@@ -289,7 +301,7 @@ delete_obsolete_entries() {
if [ ! -L "$symlink_path" ]; then
dump " not a symlink, so won't delete: $symlink_path"
- elif [ -n "${dry_run+x}" ]; then
+ elif is_dry_run; then
dump ' won'"'"'t delete an obsolete symlink, because it'"'"'s a dry run'
else
rm -f -- "$symlink_path"
@@ -354,11 +366,11 @@ discover_new_entries() {
local symlink_path="$symlink_var_dir${shared_path:${#shared_var_dir}}"
dump " destination file: $symlink_path"
- if [ -z "${dry_run+x}" ]; then
+ if is_dry_run; then
+ dump ' won'"'"'t create a symlink because it'"'"'s a dry run'
+ else
mkdir -p -- "$( dirname -- "$symlink_path" )"
ln -f -s -- "$shared_path" "$symlink_path"
- else
- dump ' won'"'"'t create a symlink because it'"'"'s a dry run'
fi
database[$entry]=1
@@ -436,6 +448,10 @@ parse_script_options() {
done
}
+is_dry_run() {
+ test -n "${dry_run+x}"
+}
+
main() {
parse_script_options "$@"
[ -n "${exit_with_usage+x}" ] && exit_with_usage