/// <summary>
/// Initializes a new instance.
/// </summary>
public DotenvConfigurationProvider(DotenvConfigurationSource source) : base(source)
{
}
/// <summary>
/// Adds a Dotenv configuration source to <paramref name="builder"/>.
/// </summary>
/// <param name="builder">The <see cref="IConfigurationBuilder"/> to add to.</param>
/// <param name="provider">The <see cref="IFileProvider"/> to use to access the file.</param>
/// <param name="path">Path relative to the base path stored in
/// <see cref="IConfigurationBuilder.Properties"/> of <paramref name="builder"/>.</param>
/// <param name="optional">Whether the file is optional.</param>
/// <param name="reloadOnChange">Whether the configuration should be reloaded if the file changes.</param>
/// <returns>The <see cref="IConfigurationBuilder"/>.</returns>
public static IConfigurationBuilder AddDotenvFile(this IConfigurationBuilder builder, IFileProvider provider, string path, bool optional, bool reloadOnChange)
{
// Bail if builder is null.
if (builder == null)
{
throw new ArgumentNullException(nameof(builder));
}
// Use the default value if value is empty.
if (string.IsNullOrEmpty(path))
{
path = Dotenv.DefaultPath;
path = path.Replace("./", "");
}
#if NET451
var basePath1 = AppDomain.CurrentDomain.GetData("APP_CONTEXT_BASE_DIRECTORY") as string
?? AppDomain.CurrentDomain.BaseDirectory
?? string.Empty;
#else
var basePath1 = AppContext.BaseDirectory ?? string.Empty;
#endif
var basePaths = new List <string>()
{
basePath1
};
// Since we shouldn't relay on asp.net core hosting package
// and then we can't get content root path and because of
// https://github.com/aspnet/FileSystem/issues/232
// we have to create two different paths that we can try to read the dotenv file from.
if (basePath1.Contains("/bin/"))
{
var basePath2 = basePath1.Split(new string[] { "bin" }, StringSplitOptions.None)[0];
basePaths.Add(basePath2.TrimEnd('/'));
}
if (provider == null)
{
//--
// The below is still needed for .NET Core 1.x
//--
var fileExists = false;
foreach (var basePath in basePaths)
{
var testPath = string.Join("/", new string[] { basePath, path });
if (File.Exists(testPath))
{
fileExists = true;
path = testPath;
break;
}
}
if (!fileExists && !optional)
{
throw new Exception($"The .env configuration file '{path}' was not found");
}
if (Path.IsPathRooted(path))
{
// Real PhysicalFileProvider has a bug that don't allow dot files:
// https://github.com/aspnet/FileSystem/issues/232
provider = new FileProvider.PhysicalFileProvider(Path.GetDirectoryName(path));
path = Path.GetFileName(path);
}
}
else
{
//--
// For .NET Core 2.0 and above, the PhysicalFileProvider has ways to deal
// with hidden files.
// See the change: https://github.com/aspnet/FileSystem/pull/280/files
// This also allowed MockFileProvider to be plugged in for unit testing.
//--
if (!provider.GetFileInfo(path).Exists)
{
throw new Exception($"The configuration file {path} could not be found.");
}
}
var source = new DotenvConfigurationSource
{
Path = path,
Optional = optional,
FileProvider = provider,
ReloadOnChange = reloadOnChange
};
builder.Add(source);
return(builder);
}