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@ -20,11 +20,34 @@ import (
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"helm.sh/helm/v3/pkg/helmpath/xdg"
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"helm.sh/helm/v3/pkg/helmpath/xdg"
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)
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)
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const (
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// CacheHomeEnvVar is the environment variable used by Helm
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// for the cache directory. When no value is set a default is used.
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CacheHomeEnvVar = "HELM_CACHE_HOME"
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// ConfigHomeEnvVar is the environment variable used by Helm
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// for the config directory. When no value is set a default is used.
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ConfigHomeEnvVar = "HELM_CONFIG_HOME"
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// DataHomeEnvVar is the environment variable used by Helm
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// for the data directory. When no value is set a default is used.
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DataHomeEnvVar = "HELM_DATA_HOME"
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)
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// lazypath is an lazy-loaded path buffer for the XDG base directory specification.
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// lazypath is an lazy-loaded path buffer for the XDG base directory specification.
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type lazypath string
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type lazypath string
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func (l lazypath) path(envVar string, defaultFn func() string, elem ...string) string {
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func (l lazypath) path(helmEnvVar, xdgEnvVar string, defaultFn func() string, elem ...string) string {
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base := os.Getenv(envVar)
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// There is an order to checking for a path.
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// 1. See if a Helm specific environment variable has been set.
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// 2. Check if an XDG environment variable is set
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// 3. Fall back to a default
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base := os.Getenv(helmEnvVar)
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if base != "" {
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return filepath.Join(base, filepath.Join(elem...))
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}
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base = os.Getenv(xdgEnvVar)
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if base == "" {
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if base == "" {
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base = defaultFn()
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base = defaultFn()
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}
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}
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@ -34,16 +57,16 @@ func (l lazypath) path(envVar string, defaultFn func() string, elem ...string) s
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// cachePath defines the base directory relative to which user specific non-essential data files
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// cachePath defines the base directory relative to which user specific non-essential data files
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// should be stored.
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// should be stored.
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func (l lazypath) cachePath(elem ...string) string {
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func (l lazypath) cachePath(elem ...string) string {
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return l.path(xdg.CacheHomeEnvVar, cacheHome, filepath.Join(elem...))
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return l.path(CacheHomeEnvVar, xdg.CacheHomeEnvVar, cacheHome, filepath.Join(elem...))
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}
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}
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// configPath defines the base directory relative to which user specific configuration files should
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// configPath defines the base directory relative to which user specific configuration files should
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// be stored.
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// be stored.
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func (l lazypath) configPath(elem ...string) string {
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func (l lazypath) configPath(elem ...string) string {
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return l.path(xdg.ConfigHomeEnvVar, configHome, filepath.Join(elem...))
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return l.path(ConfigHomeEnvVar, xdg.ConfigHomeEnvVar, configHome, filepath.Join(elem...))
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}
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}
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// dataPath defines the base directory relative to which user specific data files should be stored.
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// dataPath defines the base directory relative to which user specific data files should be stored.
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func (l lazypath) dataPath(elem ...string) string {
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func (l lazypath) dataPath(elem ...string) string {
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return l.path(xdg.DataHomeEnvVar, dataHome, filepath.Join(elem...))
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return l.path(DataHomeEnvVar, xdg.DataHomeEnvVar, dataHome, filepath.Join(elem...))
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}
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}
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