<?php
/**
* pspell compatibility wrapper
*
* This library provides some of the functions from the pspell PHP extension
* by wrapping them to calls to the aspell binary
*
* It can be simply dropped into code written for the pspell extension like
* the following
*
* if(!function_exists('pspell_suggest')){
* require_once ("pspell_comp.php");
* }
*
* Define the path to the aspell binary like this if needed:
*
* define('ASPELL_BIN','/path/to/aspell');
*
* @author Andreas Gohr <andi@splitbrain.org>
*
* Copyright (c) 2005, Andreas Gohr
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY
* OF SUCH DAMAGE.
*/
if (!defined('ASPELL_BIN')) {
define('ASPELL_BIN', 'aspell');
}
define(PSPELL_FAST, 1); # Fast mode (least number of suggestions)
define(PSPELL_NORMAL, 2); # Normal mode (more suggestions)
define(PSPELL_BAD_SPELLERS, 3); # Slow mode (a lot of suggestions) )
function pspell_config_create($language, $spelling=null, $jargon=null, $encoding='iso8859-1')
{
return new Pspell($language, $spelling, $jargon, $encoding);
}
function pspell_config_mode(&$config, $mode)
{
return $config->setMode($mode);
}
function pspell_new_config(&$config)
{
return $config;
}
function pspell_check(&$dict, $word)
{
return $dict->check($word);
}
function pspell_suggest(&$dict, $word)
{
return $dict->suggest($word);
}
/**
* Class to provide pspell functionality through aspell
*
* Needs PHP >= 4.3.0
*/
class Pspell
{
public $language;
public $spelling;
public $jargon;
public $encoding;
public $mode=PSPELL_NORMAL;
public $args='';
/**
* Constructor. Works like pspell_config_create()
*
* @author Andreas Gohr <andi@splitbrain.org>
* @todo $spelling isn't used
*/
public function Pspell($language, $spelling=null, $jargon=null, $encoding='iso8859-1')
{
$this->language = $language;
$this->spelling = $spelling;
$this->jargon = $jargon;
$this->encoding = $encoding;
$this->_prepareArgs();
}
/**
* Set the spelling mode like pspell_config_mode()
*
* Mode can be PSPELL_FAST, PSPELL_NORMAL or PSPELL_BAD_SPELLER
*
* @author Andreas Gohr <andi@splitbrain.org>
* @todo check for valid mode
*/
public function setMode($mode)
{
$this->mode = $mode;
$this->_prepareArgs();
return $mode;
}
/**
* Prepares the needed arguments for the call to the aspell binary
*
* No need to call this directly
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
public function _prepareArgs()
{
$this->args = '';
if ($this->language) {
$this->args .= ' --lang='.escapeshellarg($this->language);
} else {
return false; // no lang no spell
}
#FIXME how to support spelling?
if ($this->$jargon) {
$this->args .= ' --jargon='.escapeshellarg($jargon);
}
if ($this->$encoding) {
$this->args .= ' --encoding='.escapeshellarg($encoding);
}
switch ($this->mode) {
case PSPELL_FAST:
$this->args .= ' --sug-mode=fast';
break;
case PSPELL_BAD_SPELLERS:
$this->args .= ' --sug-mode=bad-spellers';
break;
default:
$this->args .= ' --sug-mode=normal';
}
return true;
}
/**
* Checks a word for correctness
*
* This opens a bidirectional pipe to the aspell binary, writes
* the given word to STDIN and reads STDOUT for the result
*
* @returns array of suggestions on wrong spelling, or true on no spellerror
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
public function suggest($word)
{
$out = '';
$err = '';
$word = trim($word);
if (empty($word)) {
return true;
}
//prepare file descriptors
$descspec = array(
0 => array('pipe', 'r'), // stdin is a pipe that the child will read from
1 => array('pipe', 'w'), // stdout is a pipe that the child will write to
2 => array('pipe', 'w') // stderr is a file to write to
);
$process = proc_open(ASPELL_BIN.' -a'.$this->args, $descspec, $pipes);
if (is_resource($process)) {
//write to stdin
fwrite($pipes[0], $word);
fclose($pipes[0]);
//read stdout
while (!feof($pipes[1])) {
$out .= fread($pipes[1], 8192);
}
fclose($pipes[1]);
//read stderr
while (!feof($pipes[2])) {
$err .= fread($pipes[2], 8192);
}
fclose($pipes[2]);
if (proc_close($process) != 0) {
//something went wrong
trigger_error("aspell returned an error: $err", E_USER_WARNING);
return array();
}
//parse output
$lines = split("\n", $out);
foreach ($lines as $line) {
$line = trim($line);
if (empty($line)) {
continue;
} // empty line
if ($line[0] == '@') {
continue;
} // comment
if ($line[0] == '*') {
return true;
} // no mistakes made
if ($line[0] == '#') {
return array();
} // mistake but no suggestions
if ($line[0] == '&') {
$line = preg_replace('/&.*?: /', '', $line);
return split(', ', $line);
}
}
return true; // shouldn't be reached
}
//opening failed
trigger_error("Could not run aspell '".ASPELL_BIN."'", E_USER_WARNING);
return array();
}
/**
* Check if a word is misspelled like pspell_check
*
* @author Andreas Gohr <andi@splitbrain.org>
*/
public function check($word)
{
if (is_array($this->suggest($word))) {
return false;
} else {
return true;
}
}
}
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