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45 lines
1.5 KiB
Go
45 lines
1.5 KiB
Go
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// Copyright (c) 2023 - 2025 IBM Corp.
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// All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package file
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import (
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"os"
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F "github.com/IBM/fp-go/v2/function"
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"github.com/IBM/fp-go/v2/io"
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IOF "github.com/IBM/fp-go/v2/io/file"
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"github.com/IBM/fp-go/v2/ioeither"
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)
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var (
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// CreateTemp created a temp file with proper parametrization
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CreateTemp = ioeither.Eitherize2(os.CreateTemp)
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// onCreateTempFile creates a temp file with sensible defaults
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onCreateTempFile = CreateTemp("", "*")
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// destroy handler
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onReleaseTempFile = F.Flow4(
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IOF.Close[*os.File],
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io.Map((*os.File).Name),
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ioeither.FromIO[error, string],
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ioeither.Chain(Remove),
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)
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)
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// WithTempFile creates a temporary file, then invokes a callback to create a resource based on the file, then close and remove the temp file
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func WithTempFile[A any](f func(*os.File) ioeither.IOEither[error, A]) ioeither.IOEither[error, A] {
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return ioeither.WithResource[A](onCreateTempFile, onReleaseTempFile)(f)
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}
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