opendrive: use lib/encoder

docs/content/opendrive.md

@@ -69,6 +69,36 @@ OpenDrive allows modification times to be set on objects accurate to 1
 second. These will be used to detect whether objects need syncing or
 not.
 
+#### Restricted filename characters
+
+| Character | Value | Replacement |
+| --------- |:-----:|:-----------:|
+| NUL       | 0x00  | ␀           |
+| /         | 0x2F  | ／          |
+| "         | 0x22  | ＂          |
+| *         | 0x2A  | ＊          |
+| :         | 0x3A  | ：          |
+| <         | 0x3C  | ＜          |
+| >         | 0x3E  | ＞          |
+| ?         | 0x3F  | ？          |
+| \         | 0x5C  | ＼          |
+| \|        | 0x7C  | ｜          |
+
+File names can also not begin or end with the following characters.
+These only get replaced if they are the first or last character in the name:
+
+| Character | Value | Replacement |
+| --------- |:-----:|:-----------:|
+| SP        | 0x20  | ␠           |
+| HT        | 0x09  | ␉           |
+| LF        | 0x0A  | ␊           |
+| VT        | 0x0B  | ␋           |
+| CR        | 0x0D  | ␍           |
+
+
+Invalid UTF-8 bytes will also be [replaced](/overview/#invalid-utf8),
+as they can't be used in JSON strings.
+
 <!--- autogenerated options start - DO NOT EDIT, instead edit fs.RegInfo in backend/opendrive/opendrive.go then run make backenddocs -->
 ### Standard Options