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package files |
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import ( |
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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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// FileExists validates that the specified path exists. |
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// Path may be a directory or file. |
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func FileExists(path string) (bool, error) { |
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if _, err := os.Stat(path); err == nil { |
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return true, nil |
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} else if os.IsNotExist(err) { |
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return false, nil |
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} else { |
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return false, err |
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} |
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} |
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// GetOrCreateFile gets a pointer to the file at the path specified. |
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// If the path does not exist, it is created. |
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// If the parent directory or directories don't exist, they are also created. |
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func GetOrCreateFile(path string) (*os.File, error) { |
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parent := filepath.Dir(path) |
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if exists, _ := FileExists(parent); !exists { |
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err := os.MkdirAll(parent, 0644) |
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if err != nil { |
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return nil, err |
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} |
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} |
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if exists, _ := FileExists(path); !exists { |
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return os.Create(path) |
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} |
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return os.Open(path) |
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} |
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func Parent(path string) string { |
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return strings.ReplaceAll(filepath.Dir(path), "\\", "/") |
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} |
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func Join(path, file string) string { |
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return strings.ReplaceAll(filepath.Join(path, file), "\\", "/") |
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} |
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func FormatBytes(size uint64) string { |
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const unit = 1024 |
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if size < unit { |
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return fmt.Sprintf("%d B", size) |
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} |
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div, exp := uint64(unit), 0 |
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for n := size / unit; n >= unit; n /= unit { |
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div *= unit |
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exp++ |
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} |
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return fmt.Sprintf("%.1f %cB", float64(size)/float64(div), "KMGTPE"[exp]) |
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} |
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rchargel /
hdfs-explorer
