Exchange rate query script, ledger price db update config.

Move XE function out from the ledger-price-db-update and introduce
ledger-commodities configuration file.

1 files changed, 10 insertions, 8 deletions

diff --git a/ledger-price-db-update.sh b/ledger-price-db-update.sh
index 478efb9..46d7bb5 100755
--- a/ledger-price-db-update.sh
+++ b/ledger-price-db-update.sh
@@ -2,9 +2,15 @@
 #
 # Get currency exchanges rate and update a ledger price file.
 #
+# Read commodities from file in format: COMMODITY SYMBOL (ex.: EURUSD $)
 
 set -e
 
+LEDGER_COMMODITIES="$HOME/.ledger-commodities"
+if [ ! -f "$LEDGER_COMMODITIES" ] ; then
+    echo "No ledger commodities files: $LEDGER_COMMODITIES"
+    exit 1
+fi
 LEDGER="$HOME/.ledgerrc"
 if [[ ! -f "$LEDGER" ]] ; then
     echo "No ledger configuration file: $LEDGER" >&2
@@ -13,22 +19,18 @@ fi
 PRICE_DB_FILE=$(sed -nE "s/^--price-db (.*)/\1/p" "$LEDGER")
 PRICE_DB_FILE="${PRICE_DB_FILE/#\~/$HOME}"
 
-xe() {
-    curl -s "http://download.finance.yahoo.com/d/quotes.csv?s=$1&f=p"
-}
-
 print_rate() {
     currency="$1"
     symbol="$2"
 
     val=$(xe "$currency=X")
 
-    test -n "$val" && echo P $(date +"%Y/%m/%d %H:%M:%S") $symbol $val R
+    [[ $val =~ ^[0-9]+\.[0-9]+$ ]] && echo P $(date +"%Y/%m/%d %H:%M:%S") $symbol $val R
 }
 
 {
-    print_rate "USDRUB" "\$"
-    print_rate "EURRUB" "€"
-    print_rate "PLNRUB" "P"
+    cat "$LEDGER_COMMODITIES" | while read commodity symbol ; do
+        print_rate "$commodity" "$symbol"
+    done
 } >> "$PRICE_DB_FILE"