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Ignore warnings about float to int casting on tcpdf_fonts #857

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Ignore warnings about float to int casting on tcpdf_fonts #857

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18 changes: 18 additions & 0 deletions include/tcpdf_fonts.php
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Original file line number Diff line number Diff line change
Expand Up @@ -930,6 +930,12 @@ public static function addTTFfont($fontfile, $fonttype='', $enc='', $flags=32, $
* @public static
*/
public static function _getTTFtableChecksum($table, $length) {
// Suppress warning about casting on armhf
if (PHP_INT_SIZE == 4) {
set_error_handler(function($errno, $errstr) {
return strpos($errstr, 'is not representable as an int') !== false;
}, E_WARNING);
}
$sum = 0;
$tlen = ($length / 4);
$offset = 0;
Expand All @@ -939,6 +945,9 @@ public static function _getTTFtableChecksum($table, $length) {
$offset += 4;
}
$sum = unpack('Ni', pack('N', $sum));
if (PHP_INT_SIZE == 4) {
restore_error_handler();
}
return $sum['i'];
}

Expand Down Expand Up @@ -1382,9 +1391,18 @@ public static function _getTrueTypeFontSubset($font, $subsetchars) {
foreach ($table as $data) {
$font .= $data['data'];
}
// Suppress warning about casting on armhf
if (PHP_INT_SIZE == 4) {
set_error_handler(function($errno, $errstr) {
return strpos($errstr, 'is not representable as an int') !== false;
}, E_WARNING);
}
// set checkSumAdjustment on head table
$checkSumAdjustment = 0xB1B0AFBA - self::_getTTFtableChecksum($font, strlen($font));
$font = substr($font, 0, $table['head']['offset'] + $offset + 8).pack('N', $checkSumAdjustment).substr($font, $table['head']['offset'] + $offset + 12);
if (PHP_INT_SIZE == 4) {
restore_error_handler();
}
return $font;
}

Expand Down