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53 lines
1.6 KiB
Go
53 lines
1.6 KiB
Go
// Copyright (c) 2023 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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RIOE "github.com/IBM/fp-go/context/readerioeither"
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F "github.com/IBM/fp-go/function"
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IO "github.com/IBM/fp-go/io"
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IOF "github.com/IBM/fp-go/io/file"
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IOEF "github.com/IBM/fp-go/ioeither/file"
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)
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var (
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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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RIOE.FromIO[string],
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RIOE.Chain(Remove),
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)
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)
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// CreateTemp created a temp file with proper parametrization
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func CreateTemp(dir, pattern string) RIOE.ReaderIOEither[*os.File] {
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return F.Pipe2(
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IOEF.CreateTemp(dir, pattern),
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RIOE.FromIOEither[*os.File],
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RIOE.WithContext[*os.File],
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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) RIOE.ReaderIOEither[A]) RIOE.ReaderIOEither[A] {
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return RIOE.WithResource[A](onCreateTempFile, onReleaseTempFile)(f)
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}
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