From be310b54683f1951becde31e2d55d332809f1ebb Mon Sep 17 00:00:00 2001
From: epoch <epoch@hack.thebackupbox.net>
Date: Thu, 14 Nov 2019 07:50:35 +0000
Subject: added ability to use negative all as an amount

---
 bin/xchg.buy | 18 +++++++++++++-----
 1 file changed, 13 insertions(+), 5 deletions(-)

diff --git a/bin/xchg.buy b/bin/xchg.buy
index a0a3a8a..6d6d647 100755
--- a/bin/xchg.buy
+++ b/bin/xchg.buy
@@ -23,6 +23,17 @@ if [ "$source" = "" ];then
   exit 1
 fi
 
+if [ $amount = "-all" ];then #we're selling all
+  amount="100%"
+  merp=$source
+  source=$target
+  target=$merp
+fi
+
+if [ $amount = "all" ];then
+  amount="100%"
+fi
+
 rate=1
 
 #if [ $target != BTC ];then
@@ -56,12 +67,9 @@ if [ "$walletdst" = "" ];then
 fi
 
 ### if other types of ways of specifying how much are added, remember to set both srcamt and amount.
-if [ $amount = "all" ];then
-  amount="100%"
-fi
 if grep '%' <<< "$amount" 2>&1 > /dev/null;then
-  percentage="$(printf "%s\n" "$amount" | tr -cd '0-9.')"
-  srcamt="$(echo | awk "{print ($percentage / 100) * $walletsrc}")"
+  percentage="$(printf "%s\n" "$amount" | tr -cd '0-9.-')"
+  srcamt="$(echo | awk "{print ( $percentage / 100) * $walletsrc}")"
   amount=$(echo | awk "{print $srcamt / $rate}")
 else
   srcamt=$(echo | awk "{print $amount * $rate}")
-- 
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