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[refactor] Use range() function instead of string increment (#367)

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This was found during the analysis for https://wiki.php.net/rfc/saner-inc-dec-operators

I don't know what is the minimal version targeted, so the line which defines ``$c`` may need to be changes to use ``array_merge()``
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George Peter Banyard 2023-02-23 18:11:13 +00:00 committed by GitHub
parent b4136da73c
commit c05639e0c9
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1 changed files with 15 additions and 17 deletions
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32
library/HTMLPurifier/AttrDef/CSS/FontFamily.php
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@ -10,23 +10,21 @@ class HTMLPurifier_AttrDef_CSS_FontFamily extends HTMLPurifier_AttrDef
public function __construct()
{
$this->mask = '_- ';
for ($c = 'a'; $c <= 'z'; $c++) {
$this->mask .= $c;
}
for ($c = 'A'; $c <= 'Z'; $c++) {
$this->mask .= $c;
}
for ($c = '0'; $c <= '9'; $c++) {
$this->mask .= $c;
} // cast-y, but should be fine
// special bytes used by UTF-8
for ($i = 0x80; $i <= 0xFF; $i++) {
// We don't bother excluding invalid bytes in this range,
// because the our restriction of well-formed UTF-8 will
// prevent these from ever occurring.
$this->mask .= chr($i);
}
// Lowercase letters
$l = range('a', 'z');
// Uppercase letters
$u = range('A', 'Z');
// Digits
$d = range('0', '9');
// Special bytes used by UTF-8
$b = array_map('chr', range(0x80, 0xFF));
// All valid characters for the mask
$c = array_merge($l, $u, $d, $b);
// Concatenate all valid characters into a string
// Use '_- ' as an initial value
$this->mask = array_reduce($c, function ($carry, $value) {
return $carry . $value;
}, '_- ');
/*
PHP's internal strcspn implementation is