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rel_dir.go
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/
rel_dir.go
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package pathways
import (
"golang.org/x/exp/maps"
"path/filepath"
"slices"
)
type RelDir string
var (
relToAbsDir = map[RelDir]AbsDir{}
relToAbsDirSet = false
relDirsKnown []RelDir
)
func SetRelToAbsDir(ra map[RelDir]AbsDir) {
relDirsKnown = maps.Keys(ra)
relToAbsDir = ra
relToAbsDirSet = true
}
func GetAbsRelDir(rd RelDir) (string, error) {
if !relToAbsDirSet {
return "", ErrRelToAbsDirNotSet
}
if !slices.Contains(relDirsKnown, rd) {
return "", errUnknownRelDir(rd)
}
if ad, ok := relToAbsDir[rd]; ok {
adp, err := GetAbsDir(ad)
if err != nil {
return "", err
}
return filepath.Join(adp, string(rd)), nil
} else {
return "", errRelativityNotSet(rd)
}
}
func GetRelDir(rd RelDir) (string, error) {
if !slices.Contains(relDirsKnown, rd) {
return "", errUnknownRelDir(rd)
}
return string(rd), nil
}