only use perl for determining absolute path when "realpath" utility is not installed

Author: moormaster

app/uninstall.sh

@@ -4,6 +4,18 @@ if [ $# == 0 ]; then
     exit 3
 fi
 
+realpath() {
+    if [ -x "$( which realpath )" ]
+    then
+        # call the realpath utility if installed
+        "$( which realpath )" "$1"
+    else
+        # on MacOS there is no realpath utility on a default installation
+        # -> use fallback to perl
+        perl -e 'use Cwd "abs_path"; print abs_path(shift)' "$1"
+    fi
+}
+
 APP_DIR=$(pwd)
 
 if [[ -f "$APP_DIR/.bash_cli" ]]; then

bash-cli.inc.sh

@@ -12,6 +12,18 @@ COLOR_LIGHT_GRAY="\033[37m"
 COLOR_DARK_GRAY="\033[38m"
 COLOR_NORMAL="\033[39m"
 
+realpath() {
+    if [ -x "$( which realpath )" ]
+    then
+        # call the realpath utility if installed
+        "$( which realpath )" "$1"
+    else
+        # on MacOS there is no realpath utility on a default installation
+        # -> use fallback to perl
+        perl -e 'use Cwd "abs_path"; print abs_path(shift)' "$1"
+    fi
+}
+
 function bcli_resolve_path() {
     realpath "$1"
 }

cli

@@ -1,5 +1,17 @@
 #!/usr/bin/env bash
 
+realpath() {
+    if [ -x "$( which realpath )" ]
+    then
+        # call the realpath utility if installed
+        "$( which realpath )" "$1"
+    else
+        # on MacOS there is no realpath utility on a default installation
+        # -> use fallback to perl
+        perl -e 'use Cwd "abs_path"; print abs_path(shift)' "$1"
+    fi
+}
+
 ROOT_DIR=$(dirname "$(realpath "$0")")
 
 # shellcheck source=./bash-cli.inc.sh

complete

@@ -1,9 +1,22 @@
 #!/usr/bin/env bash
 
+# this file is sourced by /etc/bash_completion.d/* and therefore should not shadow
+# any existing commands in the shell -> add bcli_ prefix to realpath-helper function here
+bcli_realpath() {
+    if [ -x "$( which realpath )" ]
+    then
+        # call the realpath utility if installed
+        "$( which realpath )" "$1"
+    else
+        # on MacOS there is no realpath utility on a default installation
+        # -> use fallback to perl
+        perl -e 'use Cwd "abs_path"; print abs_path(shift)' "$1"
+    fi
+}
 
 function _bash_cli() {
     local root_dir;
-    root_dir=$(dirname "$(realpath "$(which "${COMP_WORDS[0]}")")")
+    root_dir=$(dirname "$(bcli_realpath "$(which "${COMP_WORDS[0]}")")")
 
     # shellcheck source=./bash-cli.inc.sh
     . "$root_dir/bash-cli.inc.sh"

help

@@ -1,5 +1,17 @@
 #!/usr/bin/env bash
 
+realpath() {
+    if [ -x "$( which realpath )" ]
+    then
+        # call the realpath utility if installed
+        "$( which realpath )" "$1"
+    else
+        # on MacOS there is no realpath utility on a default installation
+        # -> use fallback to perl
+        perl -e 'use Cwd "abs_path"; print abs_path(shift)' "$1"
+    fi
+}
+
 ROOT_DIR=$(dirname "$(realpath "$0")")
 
 # shellcheck source=./bash-cli.inc.sh