68 lines
1.8 KiB
Go
68 lines
1.8 KiB
Go
package file
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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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)
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// The MSDN docs appear to say that a normal path that is 248 bytes long will work;
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// empirically the path must be less then 248 bytes long.
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// See https://learn.microsoft.com/en-us/windows/win32/fileio/naming-a-file#maximum-path-length-limitation
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const maxPathLenght = 248
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// ReadStringOrFile returns the content of a string or a file if the file exists.
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// The returned boolean value indicates whether the specified `input` was a file path or not.
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func ReadStringOrFile(input string) (string, bool, error) {
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if len(input) >= maxPathLenght {
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return input, false, nil
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}
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// Check if input is a file path
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if _, err := os.Stat(input); err != nil && os.IsNotExist(err) {
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// No file found => use input as result
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return input, false, nil
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} else if err != nil {
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return "", false, err
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}
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result, err := os.ReadFile(input)
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if err != nil {
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return "", true, err
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}
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return string(result), true, nil
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}
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// DeleteDir deletes the directory at the given path.
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// It returns nil if the deletion succeeds, or the deletion error otherwise.
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// If the directory does not exist, DeleteDir returns nil.
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func DeleteDir(path string) error {
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if _, err := os.Stat(path); os.IsNotExist(err) {
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return nil
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}
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return os.Remove(path)
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}
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// ExpandFileList takes a list of file globs and expands them into a list
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// of matching file paths. It returns the expanded file list and any errors
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// from glob matching. This allows safely passing user input globs through to
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// glob matching.
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func ExpandFileList(fileList []string) ([]string, error) {
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var result []string
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for _, glob := range fileList {
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globbed, err := filepath.Glob(glob)
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if err != nil {
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return result, fmt.Errorf("failed to match %s: %w", glob, err)
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}
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if globbed != nil {
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result = append(result, globbed...)
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}
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}
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return result, nil
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}
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