Introduce build script which extracts script logic and removes debug output

.gitignore

@@ -0,0 +1 @@
+**/release

build.sh

@@ -0,0 +1,84 @@
+#!/usr/bin/env bash
+
+build::rdlink() {
+  readonly build_dir="$(cd "$(dirname -- "${BASH_SOURCE[0]}")" >/dev/null 2>&1 && pwd)"
+  readonly rdlinkRelease="${build_dir}/release/rdlink.sh"
+  readonly color_green='\033[1;32m'
+  readonly color_red='\033[1;31m'
+  readonly color_less='\033[0m'
+  readonly shellcheck_cmd="$(command -v shellcheck)"
+  readonly fileHeader="#!/usr/bin/env bash
+
+# rdlink [OPTIONS] <PATH>
+#  [OPTION]
+#     --  :  End of options marker
+#     -*  :  Other options are ignored
+#
+# License: GNU GPL V3 or later
+#  Author: Martin Winkler
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+"
+  local testresult_graphic=
+  testresult_graphic="${color_green}✔${color_less}" # alt. symbol ✓
+  testresult_graphic_fail="${color_red}✗${color_less}" # alt. symbol ≠
+
+  if ! mkdir -p "$(dirname -- "${rdlinkRelease}")" ; then
+    printf " [ERROR] Cannot create release directory\n"
+    return 1
+  fi
+
+  printf "# Building rdlink release\n"
+
+  # Write header
+  printf "%s" "${fileHeader}" > "${rdlinkRelease}"
+
+  printf "  Extracting script part and removing debug information..."
+  # Get essential script content
+  # * extract script part
+  # * remove script marker
+  #   * remove debug function calls
+  #   * remove debug options from rdlink
+  # * replace multiple empty lines with one
+  #if cat "${build_dir}/rdlink.sh" \
+  #  | sed -n '/### Script.*/,/### Script EOF/ p' \
+  #  | sed '/### Script.*/d; /^[[:blank:]]*info/d; /-d\{1,2\}/,/;;/d' \
+  #  | sed '/^$/N; /^\n$/D' \
+  #    >> "${rdlinkRelease}" 2>/dev/null ; then
+  if sed -n '/### Script.*/,/### Script EOF/ p' < "${build_dir}/rdlink.sh" \
+      | sed '/### Script.*/d; /^[[:blank:]]*info/d; /-d\{1,2\}/,/;;/d' \
+      | sed '/^$/N; /^\n$/D' \
+        >> "${rdlinkRelease}" 2>/dev/null ; then
+    printf "%b" "${testresult_graphic}\n"
+  else
+    printf "%b" "${testresult_graphic_fail}\n"
+    return 1
+  fi
+
+  if [[ "${shellcheck_cmd}" ]] ; then
+    printf "%b\n" "  Running shellcheck...\033[1A\033[s\n"
+    if "${shellcheck_cmd}" "${rdlinkRelease}" ; then
+      printf "%b" "\033[u${testresult_graphic}\n"
+    else
+      return 1
+    fi
+  fi
+
+  chmod +x "${rdlinkRelease}"
+  return 0
+}
+
+build::rdlink
+

rdlink.sh

@@ -49,8 +49,7 @@ rl::rdlink() {
 
   # Follow multiple symlinks
   while subject="$(rl::quicklink "${subject}")" ; do
-    # A link was resolved at least once
+    : # A link was resolved at least once
-    :
     info "  rl::rdlink - Link found: $subject"
   done
 
@@ -129,6 +128,7 @@ rl::canon() {
 
       subject="${work}${bname:+"/${bname}"}"
       info "  rl::canon valid parent: ${subject}"
+
       # Special: Succeed with valid element after second run; see special below
       # e.g. /root/.
       #      * /root is valid but not accessible
@@ -165,8 +165,8 @@ rl::cleanpath() {
   local rex_tmp=
 
   info "Cleaning path... ${1:-}"
-
   work="${1:-}"
+
   # Remove multiple /
   while [[ "${work:-}" = *"//"* ]]; do
     work="${work//'//'/'/'}"
@@ -180,8 +180,8 @@ rl::normalize() {
   local work=
 
   info "Normalizing path... ${1:-}"
-
   work="${1:-}"
+
   # Remove dir/.. sequences.
   local rex_tmp='[^/][^/]*/\.\./*'
   while [[ "${work}" =~ $rex_tmp ]] ; do