87 lines
1.9 KiB
Go
87 lines
1.9 KiB
Go
package packer
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import (
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"log"
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"os"
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"os/user"
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"path/filepath"
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)
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// ConfigFile returns the default path to the configuration file. On
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// Unix-like systems this is the ".packerconfig" file in the home directory.
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// On Windows, this is the "packer.config" file in the application data
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// directory.
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func ConfigFile() (string, error) {
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return configFile()
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}
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// ConfigDir returns the configuration directory for Packer.
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func ConfigDir() (string, error) {
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return configDir()
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}
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// ConfigTmpDir returns the configuration tmp directory for Packer
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func ConfigTmpDir() (string, error) {
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if tmpdir := os.Getenv("PACKER_TMP_DIR"); tmpdir != "" {
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return filepath.Abs(tmpdir)
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}
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configdir, err := configDir()
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if err != nil {
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return "", err
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}
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td := filepath.Join(configdir, "tmp")
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_, err = os.Stat(td)
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if os.IsNotExist(err) {
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if err = os.MkdirAll(td, 0755); err != nil {
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return "", err
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}
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} else if err != nil {
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return "", err
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}
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return td, nil
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}
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func homeDir() (string, error) {
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// First prefer the HOME environmental variable
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if home := os.Getenv("HOME"); home != "" {
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log.Printf("Detected home directory from env var: %s", home)
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return home, nil
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}
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// Fall back to the passwd database if not found which follows
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// the same semantics as bourne shell
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u, err := user.Current()
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// Get homedir from specified username
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// if it is set and different than what we have
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if username := os.Getenv("USER"); username != "" && err == nil && u.Username != username {
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u, err = user.Lookup(username)
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}
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// Fail if we were unable to read the record
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if err != nil {
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return "", err
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}
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return u.HomeDir, nil
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}
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func configFile() (string, error) {
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dir, err := homeDir()
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if err != nil {
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return "", err
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}
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return filepath.Join(dir, defaultConfigFile), nil
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}
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func configDir() (string, error) {
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dir, err := homeDir()
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if err != nil {
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return "", err
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}
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return filepath.Join(dir, defaultConfigDir), nil
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}
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