/*Translate file names for OpenDrive OpenDrive reserved characters The following characters are OpenDrive reserved characters, and can'tbe used in OpenDrive folder and file names. \ / : * ? " < > | OpenDrive files and folders can't have leading or trailing spaces also. */ package opendrive import (	"regexp"	"strings") // charMap holds replacements for characters//// OpenDrive has a restricted set of characters compared to other cloud// storage systems, so we to map these to the FULLWIDTH unicode// equivalents//// http://unicode-search.net/unicode-namesearch.pl?term=SOLIDUSvar (	charMap = map[rune]rune{		'\\': '＼', // FULLWIDTH REVERSE SOLIDUS		':':  '：', // FULLWIDTH COLON		'*':  '＊', // FULLWIDTH ASTERISK		'?':  '？', // FULLWIDTH QUESTION MARK		'"':  '＂', // FULLWIDTH QUOTATION MARK		'<':  '＜', // FULLWIDTH LESS-THAN SIGN		'>':  '＞', // FULLWIDTH GREATER-THAN SIGN		'|':  '｜', // FULLWIDTH VERTICAL LINE		' ':  '␠', // SYMBOL FOR SPACE	}	fixStartingWithSpace = regexp.MustCompile(`(/|^) `)	fixEndingWithSpace   = regexp.MustCompile(` (/|$)`)	invCharMap           map[rune]rune) func init() {	// Create inverse charMap	invCharMap = make(map[rune]rune, len(charMap))	for k, v := range charMap {		invCharMap[v] = k	}} // replaceReservedChars takes a path and substitutes any reserved// characters in itfunc replaceReservedChars(in string) string {	// Filenames can't start with space	in = fixStartingWithSpace.ReplaceAllString(in, "$1"+string(charMap[' ']))	// Filenames can't end with space	in = fixEndingWithSpace.ReplaceAllString(in, string(charMap[' '])+"$1")	return strings.Map(func(c rune) rune {		if replacement, ok := charMap[c]; ok && c != ' ' {			return replacement		}		return c	}, in)} // restoreReservedChars takes a path and undoes any substitutions// made by replaceReservedCharsfunc restoreReservedChars(in string) string {	return strings.Map(func(c rune) rune {		if replacement, ok := invCharMap[c]; ok {			return replacement		}		return c	}, in)}