Added repl to alg

1 files changed, 56 insertions, 45 deletions

diff --git a/alg b/alg
index 7d81fd8..e3a53a9 100755
--- a/alg
+++ b/alg
@@ -6,7 +6,7 @@
 # Example: alg c UBL E - prints out all first algs for UBL-FDR-*
 
 usage() {
-        echo "Usage: alg [edit] (c|e|w) [buffer] (1 letter|2 letters)"
+        echo "Usage: alg [[edit] (c|e|w) [buffer] (1 letter|2 letters)]"
 }
 
 default_editor=vi
@@ -137,51 +137,62 @@ showall_w() {
         done
 }
 
-if [ "$1" = "edit" ]; then
-        editor="$default_editor"
-        shift
-else
-        editor="cat"
-fi
-
-type="$1"
-if [ -z "$3" ]; then
-        letters="$2"
-else
-        letters="$3"
-        cbuffer="$2"
-        ebuffer="$2"
-        wbuffer="$2"
-fi
-
-letter1="$(echo "$letters" | cut -c 1)"
-letter2="$(echo "$letters" | cut -b 2)"
-
-[ -z "$letter1" ] && usage && exit 1
-
-case "$type" in
-c)
-        if [ -n "$letter2" ]; then
-                edit corners $cbuffer $(corner $letter1) $(corner $letter2)
-        else
-                showall_c $cbuffer $letter1
-        fi
-        ;;
-e)
-        if [ -n "$letter2" ]; then
-                edit edges $ebuffer $(edge $letter1) $(edge $letter2)
+run() {
+        if [ "$1" = "edit" ]; then
+                editor="$default_editor"
+                shift
         else
-                showall_e $ebuffer $letter1
+                editor="cat"
         fi
-        ;;
-w)
-        if [ -n "$letter2" ]; then
-                edit wings $wbuffer $(wing $letter1) $(wing $letter2)
+
+        type="$1"
+        if [ -z "$3" ]; then
+                letters="$2"
         else
-                showall_w $wbuffer $letter1
+                letters="$3"
+                cbuffer="$2"
+                ebuffer="$2"
+                wbuffer="$2"
         fi
-        ;;
-*)
-        usage && exit 1
-        ;;
-esac
+
+        letter1="$(echo "$letters" | cut -c 1)"
+        letter2="$(echo "$letters" | cut -b 2)"
+
+        [ -z "$letter1" ] && usage && exit 1
+
+        case "$type" in
+        c)
+                if [ -n "$letter2" ]; then
+                        edit corners $cbuffer $(corner $letter1) \
+                                $(corner $letter2)
+                else
+                        showall_c $cbuffer $letter1
+                fi
+                ;;
+        e)
+                if [ -n "$letter2" ]; then
+                        edit edges $ebuffer $(edge $letter1) $(edge $letter2)
+                else
+                        showall_e $ebuffer $letter1
+                fi
+                ;;
+        w)
+                if [ -n "$letter2" ]; then
+                        edit wings $wbuffer $(wing $letter1) $(wing $letter2)
+                else
+                        showall_w $wbuffer $letter1
+                fi
+                ;;
+        *)
+                usage && exit 1
+                ;;
+        esac
+}
+
+if [ -n "$1" ]; then
+        run $@
+else
+        while read -r args; do
+                run $args
+        done
+fi