viper/file.go

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//go:build !finder
package viper
import (
"fmt"
"os"
"path/filepath"
"github.com/spf13/afero"
)
// Search all configPaths for any config file.
// Returns the first path that exists (and is a config file).
func (v *Viper) findConfigFile() (string, error) {
v.logger.Info("searching for config in paths", "paths", v.configPaths)
for _, cp := range v.configPaths {
file := v.searchInPath(cp)
if file != "" {
return file, nil
}
}
return "", ConfigFileNotFoundError{v.configName, fmt.Sprintf("%s", v.configPaths)}
}
func (v *Viper) searchInPath(in string) (filename string) {
v.logger.Debug("searching for config in path", "path", in)
for _, ext := range SupportedExts {
v.logger.Debug("checking if file exists", "file", filepath.Join(in, v.configName+"."+ext))
if b, _ := exists(v.fs, filepath.Join(in, v.configName+"."+ext)); b {
// record the first found
if len(filename) < 1 {
filename = filepath.Join(in, v.configName+"."+ext)
}
// if specific configType are same with the current extension type, then return current
if v.configType == ext {
filename = filepath.Join(in, v.configName+"."+ext)
break
}
}
}
// return only if file exists
if len(filename) > 0 {
v.logger.Debug("found file", "file", filename)
return filename
}
if v.configType != "" {
if b, _ := exists(v.fs, filepath.Join(in, v.configName)); b {
return filepath.Join(in, v.configName)
}
}
return ""
}
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// exists checks if file exists.
func exists(fs afero.Fs, path string) (bool, error) {
stat, err := fs.Stat(path)
if err == nil {
return !stat.IsDir(), nil
}
if os.IsNotExist(err) {
return false, nil
}
return false, err
}