1 //go:build go1.16 && finder

     2 // +build go1.16,finder

     3 

     4 package viper

     5 

     6 import (

     7 	"fmt"

     8 

     9 	"github.com/spf13/afero"

    10 )

    11 

    12 // Search all configPaths for any config file.

    13 // Returns the first path that exists (and is a config file).

    14 func (v *Viper) findConfigFile() (string, error) {

    15 	finder := finder{

    16 		paths:            v.configPaths,

    17 		fileNames:        []string{v.configName},

    18 		extensions:       SupportedExts,

    19 		withoutExtension: v.configType != "",

    20 	}

    21 

    22 	file, err := finder.Find(afero.NewIOFS(v.fs))

    23 	if err != nil {

    24 		return "", err

    25 	}

    26 

    27 	if file == "" {

    28 		return "", ConfigFileNotFoundError{v.configName, fmt.Sprintf("%s", v.configPaths)}

    29 	}

    30 

    31 	return file, nil

    32 }