[LANG-918] Extend StringEscapeUtils with escapeFilename() method

• Type: Improvement
• Status: Closed
• Priority: Minor
• Resolution: Won't Fix
• Component/s: lang.*, lang.text.*
• Assignee: Unassigned
• Reporter: Olivier Vierlinck
• Created: 17/Sep/13 16:23
• Updated: 15/Oct/13 02:33
• Resolved: 21/Sep/13 01:07

Description

It would be nice if StringEscapeUtils could take any string (include with backslash, forward slash, tab, CR, LF, extended unicode chars,...) and turn it into a valid filename, escaping the 'invalid' characters.

Implementation might be OS-dependent or simply escape all characters which are invalid in at least one of the major OS (Unix/Windows/Mac)

Rationale: it is quite common to receive uncontrolled text (from Web form, from mail parsing, ...) and need to turn it into some part of file/folder name (to create some workspace, archive data,...) which 'ressemble' (and +/- human readable) to the original free text.

Could be very similar to escapeHtml(): replace each invalid char by %HexCodeOfChar - only the list of 'invalid chars' would be different.