Bake in support for rustfmt

_reformat-common.bash

@@ -147,6 +147,8 @@ function sniff_file_type() {
         file_type="dart"
     elif [[ $ff = *.pl ]]; then
         file_type="perl"
+    elif [[ $ff = *.rs ]] ; then
+        file_type="rust"
     fi
 
     echo $file_type
@@ -191,6 +193,8 @@ function choose_wrapper() {
         out="$WF_ROOT"/./isort-and-black.sh
     elif [[ $file_type == "golang" ]]; then
         out="$WF_ROOT"/./gofmt.sh
+    elif [[ $file_type == "rust" ]] ; then
+        out="$WF_ROOT"/./rustfmt.sh
     elif [[ $file_type == "dart" ]]; then
         out="$WF_ROOT"/./dart_format.sh
     else

rustfmt.sh

@@ -0,0 +1,50 @@
+#!/bin/bash
+
+set -uo pipefail
+IFS=$'\n\t'
+
+DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)"
+
+source "$DIR/_reformat-common.bash"
+
+log "in rustfmt.sh"
+
+set -e
+
+file="$1"
+
+log what
+
+pushd "$(dirname "$file")" 2>&1
+
+if [[ "$WOULD_REFORMAT" = "would_reformat" ]]; then
+
+log beavis
+
+    set +e
+    out=$(rustfmt --check "$file" 2>&1 >/dev/null)
+    retval="$?"
+    set -e
+
+log got back retval $retval
+
+    exit "$retval"
+fi
+
+if [[ "$WOULD_REFORMAT" = "do_reformat" ]]; then
+
+log in do reformat mode
+
+    out=$(rustfmt "$file" 2>&1 >/dev/null)
+    retval="$?"
+
+    echo "$out"
+
+log $out
+
+    exit "$retval"
+fi
+
+log are we here now
+
+exit 255