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Added Kohana v3.0.9

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This commit is contained in:
Deon George
2011-01-14 01:49:56 +11:00
parent fe11dd5f51
commit b6e9961846
520 changed files with 54728 additions and 0 deletions
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144
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) 2007-2010 Kohana Team
* @copyright (c) 2005 Harry Fuecks
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt
*/
function _to_unicode($str)
{
// Cached expected number of octets after the current octet until the beginning of the next UTF8 character sequence
$m_state = 0;
// Cached Unicode character
$m_ucs4 = 0;
// Cached expected number of octets in the current sequence
$m_bytes = 1;
$out = array();
$len = strlen($str);
for ($i = 0; $i < $len; $i++)
{
$in = ord($str[$i]);
if ($m_state == 0)
{
// When m_state 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;
$m_bytes = 1;
}
elseif (0xC0 == (0xE0 & $in))
{
// First octet of 2 octet sequence
$m_ucs4 = $in;
$m_ucs4 = ($m_ucs4 & 0x1F) << 6;
$m_state = 1;
$m_bytes = 2;
}
elseif (0xE0 == (0xF0 & $in))
{
// First octet of 3 octet sequence
$m_ucs4 = $in;
$m_ucs4 = ($m_ucs4 & 0x0F) << 12;
$m_state = 2;
$m_bytes = 3;
}
elseif (0xF0 == (0xF8 & $in))
{
// First octet of 4 octet sequence
$m_ucs4 = $in;
$m_ucs4 = ($m_ucs4 & 0x07) << 18;
$m_state = 3;
$m_bytes = 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.
**/
$m_ucs4 = $in;
$m_ucs4 = ($m_ucs4 & 0x03) << 24;
$m_state = 4;
$m_bytes = 5;
}
elseif (0xFC == (0xFE & $in))
{
// First octet of 6 octet sequence, see comments for 5 octet sequence.
$m_ucs4 = $in;
$m_ucs4 = ($m_ucs4 & 1) << 30;
$m_state = 5;
$m_bytes = 6;
}
else
{
// Current octet is neither in the US-ASCII range nor a legal first octet of a multi-octet sequence.
trigger_error('UTF8::to_unicode: Illegal sequence identifier in UTF-8 at byte '.$i, E_USER_WARNING);
return FALSE;
}
}
else
{
// When m_state is non-zero, we expect a continuation of the multi-octet sequence
if (0x80 == (0xC0 & $in))
{
// Legal continuation
$shift = ($m_state - 1) * 6;
$tmp = $in;
$tmp = ($tmp & 0x0000003F) << $shift;
$m_ucs4 |= $tmp;
// End of the multi-octet sequence. mUcs4 now contains the final Unicode codepoint to be output
if (0 == --$m_state)
{
// Check for illegal sequences and codepoints
// From Unicode 3.1, non-shortest form is illegal
if (((2 == $m_bytes) AND ($m_ucs4 < 0x0080)) OR
((3 == $m_bytes) AND ($m_ucs4 < 0x0800)) OR
((4 == $m_bytes) AND ($m_ucs4 < 0x10000)) OR
(4 < $m_bytes) OR
// From Unicode 3.2, surrogate characters are illegal
(($m_ucs4 & 0xFFFFF800) == 0xD800) OR
// Codepoints outside the Unicode range are illegal
($m_ucs4 > 0x10FFFF))
{
trigger_error('UTF8::to_unicode: Illegal sequence or codepoint in UTF-8 at byte '.$i, E_USER_WARNING);
return FALSE;
}
if (0xFEFF != $m_ucs4)
{
// BOM is legal but we don't want to output it
$out[] = $m_ucs4;
}
// Initialize UTF-8 cache
$m_state = 0;
$m_ucs4 = 0;
$m_bytes = 1;
}
}
else
{
// ((0xC0 & (*in) != 0x80) AND (m_state != 0))
// Incomplete multi-octet sequence
trigger_error('UTF8::to_unicode: Incomplete multi-octet sequence in UTF-8 at byte '.$i, E_USER_WARNING);
return FALSE;
}
}
}
return $out;
}