1 files changed, 24 insertions, 0 deletions
diff --git a/src/atomic.erl b/src/atomic.erl
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+++ b/src/atomic.erl
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+%%
+%% Copyright (c) 2014 Kungliga Tekniska Högskolan
+%% (KTH Royal Institute of Technology, Stockholm, Sweden).
+%%
+
+-module(atomic).
+-export([replacefile/2, readfile/1]).
+
+-spec replacefile(string(), binary()) -> ok.
+replacefile(Path, Content) ->
+    TempName = util:tempfilename(Path),
+    util:write_tempfile_and_rename(Path, TempName, Content),
+    util:fsync([Path, filename:dirname(Path)]).
+
+-spec readfile(string()) -> binary().
+readfile(Path) ->
+    case file:read_file(Path) of
+        {ok, Contents} ->
+            Contents;
+	{error, enoent} ->
+            noentry;
+        {error, Error} ->
+            util:exit_with_error(readfile, Error, "Error reading file")
+    end.