add file/ensure_newline

@briceburg TODO - test on os x
briceburg · Mar 1, 2017 · 9ee086b · 9ee086b
1 parent af1e277
commit 9ee086b
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/file.sh b/file.sh
@@ -36,3 +36,11 @@ file/interpolate(){
     echo "$replace" >> "$file"
   fi
 }
+
+# file/ensure_newline - appends a newline if a file does not end in newline
+# usage: file/ensure_newline <path>
+file/ensure_newline(){
+  local file="$1"
+  local junk
+  tail -c1 "$file" | read -r junk || echo >> "$file"
+}