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<?php
/**
*
* This file is part of the phpBB Forum Software package.
*
* @copyright (c) phpBB Limited <https://www.phpbb.com>
* @license GNU General Public License, version 2 (GPL-2.0)
*
* For full copyright and license information, please see
* the docs/CREDITS.txt file.
*
*/
if (php_sapi_name() != 'cli')
{
die("This program must be run from the command line.\n");
}
//
// Security message:
//
// This script is potentially dangerous.
// Remove or comment the next line (die(".... ) to enable this script.
// Do NOT FORGET to either remove this script or disable it after you have used it.
//
die("Please read the first lines of this script for instructions on how to enable it");
set_time_limit(0);
define('IN_PHPBB', true);
$phpbb_root_path = '../';
$phpEx = substr(strrchr(__FILE__, '.'), 1);
echo "Checking for required files\n";
download('http://www.unicode.org/Public/UNIDATA/UnicodeData.txt');
echo "\n";
/**
* Generate the files needed by the search indexer
*/
echo "Generating search indexer tables\n";
$fp = fopen($phpbb_root_path . 'develop/UnicodeData.txt', 'rt');
$map = array();
while ($line = fgets($fp, 1024))
{
/**
* The current line is split, $m[0] hold the codepoint in hexadecimal and
* all other fields numbered as in http://www.unicode.org/Public/UNIDATA/UCD.html#UnicodeData.txt
*/
$m = explode(';', $line);
/**
* @var integer $cp Current char codepoint
* @var string $utf_char UTF-8 representation of current char
*/
$cp = hexdec($m[0]);
$utf_char = cp_to_utf($cp);
/**
* $m[2] holds the "General Category" of the character
* @link http://www.unicode.org/Public/UNIDATA/UCD.html#General_Category_Values
*/
switch ($m[2][0])
{
case 'L':
/**
* We allow all letters and map them to their lowercased counterpart on the fly
*/
$map_to_hex = (isset($m[13][0])) ? $m[13] : $m[0];
if (preg_match('#^LATIN.*(?:LETTER|LIGATURE) ([A-Z]{2}(?![A-Z]))$#', $m[1], $capture))
{
/**
* Special hack for some latin ligatures. Using the name of a character
* is bad practice, but for now it works well enough.
*
* @todo Note that ligatures with combining marks such as U+01E2 are
* not supported at this time
*/
$map[$cp] = strtolower($capture[1]);
}
else if (isset($m[13][0]))
{
/**
* If the letter has a lowercased form, use it
*/
$map[$cp] = hex_to_utf($m[13]);
}
else
{
/**
* In all other cases, map the letter to itself
*/
$map[$cp] = $utf_char;
}
break;
case 'M':
/**
* We allow all marks, they are mapped to themselves
*/
$map[$cp] = $utf_char;
break;
case 'N':
/**
* We allow all numbers, but we map them to their numeric value whenever
* possible. The numeric value (field #8) is in ASCII already
*
* @todo Note that fractions such as U+00BD will be converted to something
* like "1/2", with a slash. However, "1/2" entered in ASCII is converted
* to "1 2". This will have to be fixed.
*/
$map[$cp] = (isset($m[8][0])) ? $m[8] : $utf_char;
break;
default:
/**
* Everything else is ignored, skip to the next line
*/
continue 2;
}
}
fclose($fp);
/**
* Add some cheating
*/
$cheats = array(
'00DF' => 'ss', # German sharp S
'00C5' => 'ae', # Capital A with diaeresis
'00E4' => 'ae', # Small A with diaeresis
'00D6' => 'oe', # Capital O with diaeresis
'00F6' => 'oe', # Small O with diaeresis
'00DC' => 'ue', # Capital U with diaeresis
'00FC' => 'ue', # Small U with diaeresis
);
/**
* Add our "cheat replacements" to the map
*/
foreach ($cheats as $hex => $map_to)
{
$map[hexdec($hex)] = $map_to;
}
/**
* Split the map into smaller blocks
*/
$file_contents = array();
foreach ($map as $cp => $map_to)
{
$file_contents[$cp >> 11][cp_to_utf($cp)] = $map_to;
}
unset($map);
foreach ($file_contents as $idx => $contents)
{
echo "Writing to search_indexer_$idx.$phpEx\n";
$fp = fopen($phpbb_root_path . 'includes/utf/data/search_indexer_' . $idx . '.' . $phpEx, 'wb');
fwrite($fp, '<?php return ' . my_var_export($contents) . ';');
fclose($fp);
}
echo "\n*** Search indexer tables done\n\n";
die("\nAll done!\n");
////////////////////////////////////////////////////////////////////////////////
// Internal functions //
////////////////////////////////////////////////////////////////////////////////
/**
* Return a parsable string representation of a variable
*
* This is function is limited to array/strings/integers
*
* @param mixed $var Variable
* @return string PHP code representing the variable
*/
function my_var_export($var)
{
if (is_array($var))
{
$lines = array();
foreach ($var as $k => $v)
{
$lines[] = my_var_export($k) . '=>' . my_var_export($v);
}
return 'array(' . implode(',', $lines) . ')';
}
else if (is_string($var))
{
return "'" . str_replace(array('\\', "'"), array('\\\\', "\\'"), $var) . "'";
}
else
{
return $var;
}
}
/**
* Download a file to the develop/ dir
*
* @param string $url URL of the file to download
* @return null
*/
function download($url)
{
global $phpbb_root_path;
if (file_exists($phpbb_root_path . 'develop/' . basename($url)))
{
return;
}
echo 'Downloading from ', $url, ' ';
if (!$fpr = fopen($url, 'rb'))
{
die("Can't download from $url\nPlease download it yourself and put it in the develop/ dir, kthxbai");
}
if (!$fpw = fopen($phpbb_root_path . 'develop/' . basename($url), 'wb'))
{
die("Can't open develop/" . basename($url) . " for output... please check your permissions or something");
}
$i = 0;
$chunk = 32768;
$done = '';
while (!feof($fpr))
{
$i += fwrite($fpw, fread($fpr, $chunk));
echo str_repeat("\x08", strlen($done));
$done = ($i >> 10) . ' KiB';
echo $done;
}
fclose($fpr);
fclose($fpw);
echo "\n";
}
/**
* Convert a codepoint in hexadecimal to a UTF-8 char
*
* @param string $hex Codepoint, in hexadecimal
* @return string UTF-8 char
*/
function hex_to_utf($hex)
{
return cp_to_utf(hexdec($hex));
}
/**
* Convert a codepoint to a UTF-8 char
*
* @param integer $cp Unicode codepoint
* @return string UTF-8 string
*/
function cp_to_utf($cp)
{
if ($cp > 0xFFFF)
{
return chr(0xF0 | ($cp >> 18)) . chr(0x80 | (($cp >> 12) & 0x3F)) . chr(0x80 | (($cp >> 6) & 0x3F)) . chr(0x80 | ($cp & 0x3F));
}
else if ($cp > 0x7FF)
{
return chr(0xE0 | ($cp >> 12)) . chr(0x80 | (($cp >> 6) & 0x3F)) . chr(0x80 | ($cp & 0x3F));
}
else if ($cp > 0x7F)
{
return chr(0xC0 | ($cp >> 6)) . chr(0x80 | ($cp & 0x3F));
}
else
{
return chr($cp);
}
}
|
