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is_safe_path_component

cli_engine::fs

Function is_safe_path_component 

Source 
pub fn is_safe_path_component(s: &str) -> bool
Expand description

Returns true only when s is a single, non-traversal path component that is valid on all supported platforms.

Use this to validate untrusted segments (app ids, environment names, etc.) before joining them into a path.

Rejects:

  • empty strings, ., and ..
  • strings containing / or \ (path separators on any platform)
  • Windows-forbidden filename characters: : * ? " < > |
  • ASCII control characters (bytes 0x00–0x1F) and the DEL character (0x7F)
  • leading or trailing space (leading space is invisible in directory listings)
  • trailing . (valid on Unix but rejected by Windows)
  • Windows reserved device names (CON, NUL, COM1, etc.) with or without extension