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45 lines
1.2 KiB
45 lines
1.2 KiB
3 years ago
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(*
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* Copyright (c) Facebook, Inc. and its affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*)
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(** Configuration options from config file *)
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let config_file_env_var = "SLEDGE_CONFIG"
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let exe_relative_config_file_path = "config"
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let config_file =
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match Sys.getenv config_file_env_var with
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| Some file -> file
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| None ->
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Filename.concat
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(Filename.dirname Sys.executable_name)
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exe_relative_config_file_path
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let contents =
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try Yojson.Basic.from_file config_file
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with Sys_error _ ->
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warn
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"could not read config file %s@\n\
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The path to the config file can be overridden by the %s environment \
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variable."
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config_file config_file_env_var () ;
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`Assoc []
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module YBU = Yojson.Basic.Util
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let find key =
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try YBU.to_string_option (YBU.member key contents)
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with YBU.Type_error _ -> None
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let find_list key =
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try YBU.filter_string (YBU.to_list (YBU.member key contents))
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with YBU.Type_error _ -> []
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let find_exn key =
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match find key with
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| Some data -> data
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| None -> fail "%s not specified in config file %s" key config_file ()
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