--- /dev/null
+<?php defined('SYSPATH') OR die('No direct access allowed.');
+/**
+ * utf8::to_unicode
+ *
+ * @package Core
+ * @author Kohana Team
+ * @copyright (c) 2007 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;
+}
\ No newline at end of file
projects / speedfreak / blobdiff