basic.sh new functions

helpers/basic.sh

@@ -5,6 +5,34 @@ source $( dirname $(readlink -e -- "${BASH_SOURCE}"))/io.sh || exit 255
 # Little handy helpers for scripting
 ########################################################
 
+is_bash() {
+    [[ "$(basename "$SHELL")" != "bash" ]]
+}
+
+is_sourced() {
+    [[ "${BASH_SOURCE[0]}" != "$0" ]]
+}
+
+is_root() {
+    [[ "$(id -u)" -ne 0 || $(ps -o comm= -p $PPID) == "sudo" ]]
+}
+
+get_os() {
+    case "$(uname -s)" in
+        Linux*) echo Linux ;;
+        Darwin*) echo Macos ;;
+        CYGWIN*) echo Cygwin ;;
+        MINGW*) echo MinGw ;;
+        MSYS_NT*) echo Git ;;
+        *) return 1 ;;
+    esac
+}
+
+get_os_id() {
+    [ -f /etc/os-release ] && source /etc/os-release
+    echo "$ID"
+}
+
 # convert relative path $1 to full one
 abspath() {
     echo $(realpath -q "${1/#\~/$HOME}")
@@ -93,3 +121,7 @@ is_int() {
 is_number() {
     [[ "$1" =~ ^[0-9]+([.,][0-9]+)?$ ]]
 }
+
+trim() {
+    echo "$1" | xargs
+}