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Added Kohana v3.0.8

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Deon George
2010-08-21 14:43:03 +10:00
parent 27aee719b0
commit 64bdbdc981
558 changed files with 58712 additions and 0 deletions
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141
includes/kohana/system/utf8/to_unicode.php Normal file
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<?php defined('SYSPATH') or die('No direct script access.');
/**
* UTF8::to_unicode
*
* @package Kohana
* @author Kohana Team
* @copyright (c) 2007-2008 Kohana Team
* @copyright (c) 2005 Harry Fuecks
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
*/
function _to_unicode($str)
{
$mState = 0; // cached expected number of octets after the current octet until the beginning of the next UTF8 character sequence
$mUcs4 = 0; // cached Unicode character
$mBytes = 1; // cached expected number of octets in the current sequence
$out = array();
$len = strlen($str);
for ($i = 0; $i < $len; $i++)
{
$in = ord($str[$i]);
if ($mState == 0)
{
// When mState is zero we expect either a US-ASCII character or a
// multi-octet sequence.
if (0 == (0x80 & $in))
{
// US-ASCII, pass straight through.
$out[] = $in;
$mBytes = 1;
}
elseif (0xC0 == (0xE0 & $in))
{
// First octet of 2 octet sequence
$mUcs4 = $in;
$mUcs4 = ($mUcs4 & 0x1F) << 6;
$mState = 1;
$mBytes = 2;
}
elseif (0xE0 == (0xF0 & $in))
{
// First octet of 3 octet sequence
$mUcs4 = $in;
$mUcs4 = ($mUcs4 & 0x0F) << 12;
$mState = 2;
$mBytes = 3;
}
elseif (0xF0 == (0xF8 & $in))
{
// First octet of 4 octet sequence
$mUcs4 = $in;
$mUcs4 = ($mUcs4 & 0x07) << 18;
$mState = 3;
$mBytes = 4;
}
elseif (0xF8 == (0xFC & $in))
{
// First octet of 5 octet sequence.
//
// This is illegal because the encoded codepoint must be either
// (a) not the shortest form or
// (b) outside the Unicode range of 0-0x10FFFF.
// Rather than trying to resynchronize, we will carry on until the end
// of the sequence and let the later error handling code catch it.
$mUcs4 = $in;
$mUcs4 = ($mUcs4 & 0x03) << 24;
$mState = 4;
$mBytes = 5;
}
elseif (0xFC == (0xFE & $in))
{
// First octet of 6 octet sequence, see comments for 5 octet sequence.
$mUcs4 = $in;
$mUcs4 = ($mUcs4 & 1) << 30;
$mState = 5;
$mBytes = 6;
}
else
{
// Current octet is neither in the US-ASCII range nor a legal first octet of a multi-octet sequence.
trigger_error('UTF8::to_unicode: Illegal sequence identifier in UTF-8 at byte '.$i, E_USER_WARNING);
return FALSE;
}
}
else
{
// When mState is non-zero, we expect a continuation of the multi-octet sequence
if (0x80 == (0xC0 & $in))
{
// Legal continuation
$shift = ($mState - 1) * 6;
$tmp = $in;
$tmp = ($tmp & 0x0000003F) << $shift;
$mUcs4 |= $tmp;
// End of the multi-octet sequence. mUcs4 now contains the final Unicode codepoint to be output
if (0 == --$mState)
{
// Check for illegal sequences and codepoints
// From Unicode 3.1, non-shortest form is illegal
if (((2 == $mBytes) AND ($mUcs4 < 0x0080)) OR
((3 == $mBytes) AND ($mUcs4 < 0x0800)) OR
((4 == $mBytes) AND ($mUcs4 < 0x10000)) OR
(4 < $mBytes) OR
// From Unicode 3.2, surrogate characters are illegal
(($mUcs4 & 0xFFFFF800) == 0xD800) OR
// Codepoints outside the Unicode range are illegal
($mUcs4 > 0x10FFFF))
{
trigger_error('UTF8::to_unicode: Illegal sequence or codepoint in UTF-8 at byte '.$i, E_USER_WARNING);
return FALSE;
}
if (0xFEFF != $mUcs4)
{
// BOM is legal but we don't want to output it
$out[] = $mUcs4;
}
// Initialize UTF-8 cache
$mState = 0;
$mUcs4 = 0;
$mBytes = 1;
}
}
else
{
// ((0xC0 & (*in) != 0x80) AND (mState != 0))
// Incomplete multi-octet sequence
trigger_error('UTF8::to_unicode: Incomplete multi-octet sequence in UTF-8 at byte '.$i, E_USER_WARNING);
return FALSE;
}
}
}
return $out;
}