new scripts i guessHEADmaster

1 files changed, 30 insertions, 0 deletions

diff --git a/decperc b/decperc
new file mode 100755
index 0000000..a19ed95
--- /dev/null
+++ b/decperc
@@ -0,0 +1,30 @@
+#!/usr/bin/zsh
+
+dec_into_perc () {
+    dec="$1"
+    # duplicating code, don't care
+    if echo "$dec" | grep -qE '^(-?[0-9]+\.[0-9]+|-?[0-9]|\.[0-9]+)$'; then
+        percent="$( echo "$dec * 100" | bc -l )"
+        echo "${percent}%"
+    else
+        echo "Error: not a decimal number" >&2
+        exit 1
+    fi
+}
+
+perc_into_dec () {
+    perc="$1"
+    # duplicating code, don't care
+    if echo "$perc" | grep -qE '^(-?[0-9]+\.[0-9]+%|-?[0-9]+%|\.[0-9]+%)$'; then
+        dec="{$perc%?}"
+        dec="$( echo "$dec / 100" | bc -l )"
+        echo "$dec"
+    else
+        echo "Error: not a percent" >&2
+        exit 1
+    fi
+}
+
+echo "$1" | grep -qE '^(-?[0-9]+\.[0-9]+|-?[0-9]|\.[0-9]+|-?[0-9]+\.[0-9]+%|-?[0-9]+%|\.[0-9]+%)$' &&
+  len=${#1} &&
+  [[ "${1:len-1:1}" == "%" ]] && perc_into_dec "$1" || dec_into_perc "$1"