14bb7f1086
This commit starts the migration to remove the environment package. It introduced an abstraction that is not being used, and removing it makes the code simpler to maintain. This commit removes all 'exec' related package.
70 lines
1.6 KiB
Go
70 lines
1.6 KiB
Go
package environment
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import (
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"io"
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"io/fs"
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"os"
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"github.com/tkw1536/pkglib/pools"
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)
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// ExecCommandError is returned by Exec when a command could not be executed.
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// This typically hints that the executable cannot be found, but may have other causes.
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const ExecCommandError = 127
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// ExecCommandErrorFunc always returns ExecCommandError.
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func ExecCommandErrorFunc() int {
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return ExecCommandError
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}
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// DefaultFilePerm is the default mode to use for files
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const DefaultFilePerm fs.FileMode = 0666
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// DefaultDirPerm is the default mode to use for directories
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const DefaultDirPerm fs.FileMode = fs.ModeDir | fs.ModePerm
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// IsExist checks if the provided error represents a 'does not exist' errror
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func IsExist(err error) bool {
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return os.IsExist(err)
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}
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// IsNotExist checks if the provided error represents a 'does exist' error
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func IsNotExist(err error) bool {
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return os.IsNotExist(err)
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}
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// WriteFile is like [os.WriteFile].
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func WriteFile(env Environment, path string, data []byte, mode fs.FileMode) error {
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handle, err := env.Create(path, mode)
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if err != nil {
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return err
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}
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defer handle.Close()
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if _, err := handle.Write(data); err != nil {
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return err
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}
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return nil
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}
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// ReadFile is like [os.ReadFile]
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func ReadFile(env Environment, path string) ([]byte, error) {
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// open the file!
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file, err := env.Open(path)
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if err != nil {
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return nil, err
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}
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defer file.Close()
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// copy everything into a buffer!
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buffer := pools.GetBuffer()
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defer pools.ReleaseBuffer(buffer)
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if _, err := io.Copy(buffer, file); err != nil {
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return nil, err
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}
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// return the buffer contents!
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return buffer.Bytes(), nil
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}
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