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oaspec

0.14.0
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Generate Gleam code from OpenAPI 3.x specifications

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oaspec src oaspec_ffi.erl
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src/oaspec_ffi.erl 

-module(oaspec_ffi).

-export([find_executable/1, run_executable/2]).



%% Find an executable on PATH. Returns {ok, Path} or {error, nil}.

-spec find_executable(binary()) -> {ok, binary()} | {error, nil}.

find_executable(Name) ->

    case os:find_executable(binary_to_list(Name)) of

        false -> {error, nil};

        Path -> {ok, list_to_binary(Path)}

    end.



%% Run an executable with arguments. Returns the exit code as an integer.

%% Uses spawn_executable to avoid shell injection.

-spec run_executable(binary(), list(binary())) -> integer().

run_executable(Executable, Args) ->

    Port = open_port(

        {spawn_executable, binary_to_list(Executable)},

        [exit_status, stderr_to_stdout, binary, {args, [binary_to_list(A) || A <- Args]}]

    ),

    collect_exit(Port).



collect_exit(Port) ->

    receive

        {Port, {data, _}} ->

            collect_exit(Port);

        {Port, {exit_status, Code}} ->

            Code

    after 60000 ->

        catch port_close(Port),

        1

    end.