|CSS::DOM::Util(3pm)||User Contributed Perl Documentation||CSS::DOM::Util(3pm)|
CSS::DOM::Util - Utility functions for dealing with CSS tokens
use CSS::DOM::Util ':all'; # or: use CSS::DOM::Util qw[ escape unescape escape_ident unescape_url escape_str unescape_str ];
This module provides utility functions for dealing with CSS tokens.
All functions below that take one argument have a "($)" prototype, so they have the same precedence as "closedir" and "delete".
- escape $string, $chars_to_escape
- This escapes any characters in $string that occur
in $chars_to_escape, which is interpreted as a
regular expression. The regexp must consume just one character; otherwise
you'll find chars missing from the output. ASCII vertical whitespace
(except the vertical tab) is always escaped.
Printable non-alphanumeric ASCII characters and the space character are escaped with a single backslash. Other characters are encoded in hexadecimal.
"escape" also considers that you might want to include the escaped string in a larger string, so it appends a space if the escaped string ends with a hexadecimal escape with fewer than six digits.
- unescape $string
- This turns something like \"H\65llo\" into "Hello" (including quotes).
- escape_ident $string
- escape_ident $string, $more_chars_to_escape
- This escapes $string as a CSS identifier, escaping also any characters matched by $more_chars_to_escape.
- unescape_url $url_token
- Returns the URL that the token represents.
- escape_str $string
- Returns a CSS string token containing $string (within quotes; characters possibly escaped).
- unescape_str $string_token
- Returns the value that a CSS string token represents.