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/*
Translate file names for JottaCloud adapted from OneDrive
The following characters are JottaCloud reserved characters, and can't
be used in JottaCloud folder and file names.
jottacloud = "/" / "\" / "*" / "<" / ">" / "?" / "!" / "&" / ":" / ";" / "|" / "#" / "%" / """ / "'" / "." / "~"
*/
package jottacloud
import (
"regexp"
"strings"
)
// charMap holds replacements for characters
//
// Onedrive 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=SOLIDUS
var (
charMap = map[rune]rune{
'\\': '', // FULLWIDTH REVERSE SOLIDUS
'*': '', // FULLWIDTH ASTERISK
'<': '', // FULLWIDTH LESS-THAN SIGN
'>': '', // FULLWIDTH GREATER-THAN SIGN
'?': '', // FULLWIDTH QUESTION MARK
':': '', // FULLWIDTH COLON
';': '', // FULLWIDTH SEMICOLON
'|': '', // FULLWIDTH VERTICAL LINE
'"': '', // FULLWIDTH QUOTATION MARK - not on the list but seems to be reserved
' ': '', // SYMBOL FOR SPACE
}
invCharMap map[rune]rune
fixStartingWithSpace = regexp.MustCompile(`(/|^) `)
fixEndingWithSpace = regexp.MustCompile(` (/|$)`)
)
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 it
func 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 replaceReservedChars
func restoreReservedChars(in string) string {
return strings.Map(func(c rune) rune {
if replacement, ok := invCharMap[c]; ok {
return replacement
}
return c
}, in)
}
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