From c47e8246cf60a5de33fd5abc4449385c56a0de33 Mon Sep 17 00:00:00 2001
From: Jon Atack <jon@atack.com>
Date: Thu, 28 May 2020 17:48:34 +0200
Subject: [PATCH] cli: add AmountFromValue() and ValueFromAmount()

Github-Pull: #19092
Rebased-From: bbf0afade89d948f7ce377b662b0f9b4050db0bc
---
 src/bitcoin-cli.cpp | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/src/bitcoin-cli.cpp b/src/bitcoin-cli.cpp
index d6ff642ae1..c291eb231f 100644
--- a/src/bitcoin-cli.cpp
+++ b/src/bitcoin-cli.cpp
@@ -12,6 +12,7 @@
 #include <common/url.h>
 #include <compat/compat.h>
 #include <compat/stdin.h>
+#include <consensus/amount.h>
 #include <policy/feerate.h>
 #include <rpc/client.h>
 #include <rpc/mining.h>
@@ -906,6 +907,25 @@ static void ParseError(const UniValue& error, std::string& strPrint, int& nRet)
     nRet = abs(error["code"].getInt<int>());
 }
 
+static CAmount AmountFromValue(const UniValue& value)
+{
+    CAmount amount{0};
+    if (!ParseFixedPoint(value.getValStr(), 8, &amount))
+        throw std::runtime_error("Invalid amount");
+    if (!MoneyRange(amount))
+        throw std::runtime_error("Amount out of range");
+    return amount;
+}
+
+static UniValue ValueFromAmount(const CAmount& amount)
+{
+    bool sign{amount < 0};
+    int64_t n_abs{sign ? -amount : amount};
+    int64_t quotient{n_abs / COIN};
+    int64_t remainder{n_abs % COIN};
+    return UniValue(UniValue::VNUM, strprintf("%s%d.%08d", sign ? "-" : "", quotient, remainder));
+}
+
 /**
  * GetWalletBalances calls listwallets; if more than one wallet is loaded, it then
  * fetches mine.trusted balances for each loaded wallet and pushes them to `result`.