Add a spinner to display while building and pass the return value of the background process when it ends.

1 files changed, 25 insertions, 0 deletions

diff --git a/spinner.sh b/spinner.sh
new file mode 100644
index 0000000..4965d8f
--- /dev/null
+++ b/spinner.sh
@@ -0,0 +1,25 @@
+#!/bin/bash
+
+## spinner takes the pid of the process as the first argument and
+#  string to display as second argument (default provided) and spins
+#  until the process completes.
+spinner() {
+    local PROC="$1"
+    #local str="${2:-'Copyright of KatworX© Tech. Developed by Arjun Singh Kathait and Debugged by the ☆Stack Overflow Community☆'}"
+    local delay="0.1"
+    tput civis  # hide cursor
+    printf "${WHT}"
+    while [ -d /proc/$PROC ]; do
+        printf '\033[s\033[u[ / ] %s\033[u' "$str"; sleep "$delay"
+        printf '\033[s\033[u[ — ] %s\033[u' "$str"; sleep "$delay"
+        printf '\033[s\033[u[ \ ] %s\033[u' "$str"; sleep "$delay"
+        printf '\033[s\033[u[ | ] %s\033[u' "$str"; sleep "$delay"
+    done
+    wait $PROC
+    retval=$?
+    printf '\033[s\033[u%*s\033[u\033[0m' $((${#str}+6)) " "  # return to normal
+    tput cnorm  # restore cursor
+    return 0
+}
+
+export -f spinner
\ No newline at end of file