package envconf
import ("strconv"
        "fmt"
        "errors"
        "path/filepath"
        "time")

func parseInt(key string, str string)(ret cValue) {
    val, err := strconv.ParseInt(str, 10, 64)
    if err == nil {
        ret.intval = val
    } else {
        ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type int.`, key))
    }
    return
}

func parseDuration(key string, str string)(ret cValue) {
    val, err := time.ParseDuration(str)
    if err == nil {
        ret.durval = val
    } else {
        ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type duration.`, key))
    }
    return
}

func parseBool(key string, str string)(ret cValue) {
    val, err := strconv.ParseBool(str)
    if err == nil {
        ret.boolval = val
    } else {
        ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type bool.`, key))
    }
    return
}

func parseDirectory(key string, str string)(ret cValue) {
    val, err := filepath.Abs(str)
    if err == nil {
        ret.strval = val
    } else {
        ret.err = errors.New(fmt.Sprintf(`Environment variable "%s" is not of type directory.`, key))
    }
    return
}

func parseString(_ string, str string)(ret cValue) {
    ret.strval = str
    return
}