36 lines
1.1 KiB
Go
36 lines
1.1 KiB
Go
package packer
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import (
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"os"
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"path/filepath"
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)
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var DefaultCacheDir = "packer_cache"
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// CachePath returns an absolute path to a cache file or directory
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//
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// When the directory is not absolute, CachePath will try to get
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// current working directory to be able to return a full path.
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// CachePath tries to create the resulting path if it doesn't exist.
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//
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// CachePath can error in case it cannot find the cwd.
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//
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// ex:
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// PACKER_CACHE_DIR="" CacheDir() => "./packer_cache/
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// PACKER_CACHE_DIR="" CacheDir("foo") => "./packer_cache/foo
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// PACKER_CACHE_DIR="bar" CacheDir("foo") => "./bar/foo
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// PACKER_CACHE_DIR="/home/there" CacheDir("foo", "bar") => "/home/there/foo/bar
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func CachePath(paths ...string) (path string, err error) {
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defer func() {
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// create the dir based on return path if it doesn't exist
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os.MkdirAll(filepath.Dir(path), os.ModePerm)
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}()
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cacheDir := DefaultCacheDir
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if cd := os.Getenv("PACKER_CACHE_DIR"); cd != "" {
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cacheDir = cd
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}
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paths = append([]string{cacheDir}, paths...)
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return filepath.Abs(filepath.Join(paths...))
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}
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