mirror of https://github.com/docker/compose.git
69 lines
2.2 KiB
Go
69 lines
2.2 KiB
Go
/*
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Copyright (c) 2020 Docker Inc.
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Permission is hereby granted, free of charge, to any person
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obtaining a copy of this software and associated documentation
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files (the "Software"), to deal in the Software without
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restriction, including without limitation the rights to use, copy,
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modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is
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furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be
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included in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED,
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INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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HOLDERS BE LIABLE FOR ANY CLAIM,
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DAMAGES OR OTHER LIABILITY,
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WHETHER IN AN ACTION OF CONTRACT,
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TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH
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THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package context
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import (
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"encoding/json"
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"fmt"
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"os"
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"path/filepath"
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)
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// LoadConfigFile loads the docker configuration
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func LoadConfigFile(configDir string, configFileName string) (*ConfigFile, error) {
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filename := filepath.Join(configDir, configFileName)
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configFile := &ConfigFile{
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Filename: filename,
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}
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if _, err := os.Stat(filename); err == nil {
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file, err := os.Open(filename)
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if err != nil {
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return nil, fmt.Errorf("can't read %s: %w", filename, err)
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}
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// nolint errcheck
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defer file.Close()
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err = json.NewDecoder(file).Decode(&configFile)
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if err != nil {
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err = fmt.Errorf("can't read %s: %w", filename, err)
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}
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return configFile, err
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} else if !os.IsNotExist(err) {
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// if file is there but we can't stat it for any reason other
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// than it doesn't exist then stop
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return nil, fmt.Errorf("can't read %s: %w", filename, err)
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}
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return configFile, nil
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}
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// ConfigFile contains the current context from the docker configuration file
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type ConfigFile struct {
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Filename string `json:"-"` // Note: for internal use only
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CurrentContext string `json:"currentContext,omitempty"`
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}
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