51 lines
890 B
Go
51 lines
890 B
Go
package cli
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import (
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"os"
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"path/filepath"
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"strings"
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)
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// Finder holds a list of file paths.
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type Finder struct {
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BasePaths []string
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Extensions []string
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}
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// Find returns the first valid existing file among configFile
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// and the paths already registered with Finder.
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func (f Finder) Find(configFile string) (string, error) {
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paths := f.getPaths(configFile)
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for _, filePath := range paths {
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fp := os.ExpandEnv(filePath)
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_, err := os.Stat(fp)
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if os.IsNotExist(err) {
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continue
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}
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if err != nil {
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return "", err
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}
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return filepath.Abs(fp)
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}
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return "", nil
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}
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func (f Finder) getPaths(configFile string) []string {
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var paths []string
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if strings.TrimSpace(configFile) != "" {
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paths = append(paths, configFile)
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}
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for _, basePath := range f.BasePaths {
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for _, ext := range f.Extensions {
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paths = append(paths, basePath+"."+ext)
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}
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}
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return paths
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}
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