feat: Code refactoring

src/lib/backup.sh

@@ -33,13 +33,14 @@ process_source() {
     echo -e "Processing source $uri ..."
 
     case "$scheme" in
-        file)   handler='handler::tar';;
+        file)       handler='handler::tar';;
-        mysql)  handler='handler::mysqldump';;
+        mysql)      handler='handler::mysqldump';;
-        postgres) handler='handler::pg_dump';;
+        postgres)   handler='handler::pg_dump';;
-        sqlite) handler='handler::sqlite';;
+        sqlite)     handler='handler::sqlite';;
         *)  # shellcheck disable=SC2154
             # '__user_script' is assigned in main script.
-            echo "Error: $__user_script: Unsupported URI scheme: $scheme" >&2; exit 1;;
+            echo "Error: $__user_script: Unsupported URI scheme: $scheme" >&2
+            exit 1;;
     esac
 
     # Run handler function

src/lib/common.sh

@@ -46,9 +46,11 @@ log() {
     while read -r line; do
         if [ -n "$line" ]; then
             # shellcheck disable=SC2154
-            printf '[%s] %s\n' "$(date +"$log_date_fmt")" "$line" >> "$__log_file"
+            printf '[%s] %s\n' "$(date +"$log_date_fmt")" "$line" \
+                >> "$__log_file"
         fi
-    done <<< "$(sed -r 's/\x1B\[(([0-9]+)(;[0-9]+)*)?[m,K,H,f,J]//g' <<< "$message")"
+    done <<< "$(<<< "$message" \
+        sed -r 's/\x1B\[(([0-9]+)(;[0-9]+)*)?[m,K,H,f,J]//g')"
 }
 
 err() {
@@ -69,7 +71,8 @@ err() {
         shift
         case "$args" in
             -*)
-                args="$(echo "${args:1}" | grep -o . | xargs -I {} echo -n '-{} ')"
+                args="$(echo "${args:1}" | grep -o . |
+                    xargs -I {} echo -n '-{} ')"
                 # shellcheck disable=SC2086
                 set -- "$@" $args;; # 'args' must be unquoted!
             *)
@@ -135,7 +138,8 @@ is_installed() {
 
     if ! command -v "$1" >/dev/null 2>&1; then
         echo "Error: Command $1 not found." \
-            "Please install $1 or check your PATH if it's actually installed." >&2
+            "Please install $1 or check your" \
+            "PATH if it's actually installed." >&2
         exit 1
     fi
 }

src/lib/handlers/sources/mysqldump.sh

@@ -76,7 +76,8 @@ handler::mysqldump() {
         $compr_cmd > "$dump_name"
 
     if [ ! -s "$dump_name" ]; then
-        err -e "Something went wrong: Dump size is 0 bytes. Removing $dump_name"
+        err -e "Something went wrong:" \
+            "Dump size is 0 bytes. Removing $dump_name"
         rm "$dump_name"
     fi
 }

src/lib/handlers/sources/tar.sh

@@ -45,7 +45,8 @@ handler::tar() {
     fi
 
     if [[ "$src_path" == "$dst_path" ]]; then
-        echo "Error: Source and destination paths is the same: $src_path; $dst_path" >&2
+        echo "Error: Source and destination paths is the same:" \
+            "$src_path; $dst_path" >&2
         exit 1
     fi
 
@@ -67,7 +68,8 @@ handler::tar() {
     # Select filename extension by compression type.
     if [ "$compression" ]; then
         # Make sure for the `--auto-compress` is enabled in __tar_options
-        # Refference: https://www.gnu.org/software/tar/manual/html_node/gzip.html
+        # Refference:
+        #   https://www.gnu.org/software/tar/manual/html_node/gzip.html
         case "$compression" in
             gzip|gz)    file_ext='.tar.gz';;    # gzip
             tgz)        file_ext='.tgz';;       # gzip

src/lib/handlers/targets/cp.sh

@@ -52,7 +52,9 @@ handler::cp() {
         for backup in "${backups[@]}"; do
             log "Copying file $backup to $dst_path ..."
             log "Run command: cp --archive $backup $dst_path"
-            [ "$__verbose" ] && echo "Run command: cp --archive $backup $dst_path"
+            if [ "$__verbose" ]; then
+                echo "Run command: cp --archive $backup $dst_path"
+            fi
             try cp --archive "$backup" "$dst_path"
         done
     fi

src/lib/source.sh

@@ -36,7 +36,8 @@ validate_sources() {
         case "$scheme" in
             file|mysql|postgres|sqlite) : ;; # do nothing, this is OK
             *)  # shellcheck disable=SC2154
-                echo "Error: $__user_script: Unsupported URI scheme: $scheme" >&2; exit 1;;
+                echo "Error: $__user_script:" \
+                    "Unsupported URI scheme: $scheme" >&2; exit 1;;
         esac
     done
 }
@@ -65,7 +66,11 @@ validate_targets() {
                     file_targets+=("$uri")
                 fi
             ;;
-            *) echo "Error: $__user_script: Unsupported URI scheme: $scheme" >&2; exit 1;;
+            *)
+                echo "Error: $__user_script:" \
+                    "Unsupported URI scheme: $scheme" >&2
+                exit 1
+            ;;
         esac
     done
 
@@ -83,7 +88,8 @@ validate_targets() {
         if [ -d "$path" ]; then
             __main_target_path="$path"
         else
-            echo "Error: $__user_script: Path '$path' from URI '$__main_target'" \
+            echo "Error: $__user_script:" \
+                "Path '$path' from URI '$__main_target'" \
                 "does not exists or not a directory" >&2
             exit 1
         fi

src/lib/uri.sh

@@ -80,12 +80,15 @@ parse_uri() {
     fragment="$(<<< "$uri" grep -Po '(?<=#)(.*)')" || true
 
     # * Get query
-    query="$(<<< "$uri" grep -Po '(?<=\?)(.*)' | sed "s/#${fragment}//g")" || true
+    query="$(<<< "$uri" grep -Po '(?<=\?)(.*)' |
+        sed "s/#${fragment}//g")" || true
 
     # * Get path
     if [[ "$uri" =~ ^${scheme}:// ]]; then
-        path="$(<<< "$uri" sed "s/${scheme}:\/\/${authority//\[/\\[}//g")" || true
+        path="$(<<< "$uri" sed "s/${scheme}:\/\/${authority//\[/\\[}//g")" \
-        path="$(<<< "$path" sed "s/\?${query}//g;s/#${fragment}//g")" || true
+            || true
+        path="$(<<< "$path" sed "s/\?${query}//g;s/#${fragment}//g")" \
+            || true
         # Dirty hack for 'schema://host:~/path'
         if [[ "$uri" =~ :~/ ]]; then
             path="~$path"