42 lines
1.0 KiB
Go
42 lines
1.0 KiB
Go
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package helpers
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import (
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"errors"
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"fmt"
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"os"
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"path/filepath"
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"strings"
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)
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var (
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// ErrHelperError indicates that error came from helper.
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ErrHelperError = errors.New("helper")
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// ErrHelperPathNormalizationError indicates that error came from path normalization helper.
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ErrHelperPathNormalizationError = errors.New("path normalization")
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)
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// NormalizePath normalizes passed path:
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// * Path will be absolute.
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// * Symlinks will be resolved.
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// * Support for tilde (~) for home path.
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func NormalizePath(path string) (string, error) {
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// Replace possible tilde in the beginning (and only beginning!) of data path.
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if strings.HasPrefix(path, "~") {
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homeDir, err := os.UserHomeDir()
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if err != nil {
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return "", fmt.Errorf("%s: %s: %w", ErrHelperError, ErrHelperPathNormalizationError, err)
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}
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path = strings.Replace(path, "~", homeDir, 1)
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}
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// Normalize path.
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absPath, err := filepath.Abs(path)
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if err != nil {
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return "", fmt.Errorf("%s: %s: %w", ErrHelperError, ErrHelperPathNormalizationError, err)
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}
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return absPath, nil
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}
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