8.12
24 Strings
| (require denxi/string) | package: denxi |
denxi/string extends and reprovides racket/string.
This module defines useful regular expressions and string operations needed by other modules.
value
DEFAULT_STRING : non-empty-string? = "default"
The conventional default of the non empty strings.
procedure
(whole/pattstr s) → string?
s : string?
procedure
(group/pattstr s) → string?
s : string?
procedure
(or/pattstr opt ...) → string?
opt : string?
procedure
(make-extension-pattern-string exts ...) → string?
exts : string?
Returns a pattern string suitable for pregexp that matches
a dot, followed by one of the given exts at the end of the subject.
A pattern string suitable for pregexp that
matches / or null characters.
value
value
These are pattern strings suitable for pregexp.
They track Windows reserved file names.
windows-reserved-character-pattern-string matches any character reserved by Windows for file names. windows-reserved-name-pattern-string matches any character sequence that looks like a reserved Windows file name.
A pattern string suitable for pregexp
that matches zero or more whitespace characters.
value
Returns #t when applied to a non-empty byte string.
procedure
(make-rx-matcher pattern-string [ #:whole whole?]) → (-> string? (or/c #f list?)) pattern-string : string? whole? : any/c = #t
Returns a procedure. That procedure returns (and (string? s) (regexp-match (pregexp (if whole? (whole/pattstr p) p))) s) when applied to a
string s.
value
Returns #t if the value is a string, and that string is useable as a
cross-platform file name.
procedure
(get-shortest-string strings) → string?
strings : (listof string?)
Returns the shortest element of strings.
procedure
(string->value s) → any/c
s : string?
reads a Racket value from the string, treating the string as
untrusted input.
syntax-class
A syntax class for matching non-empty strings in macros.