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<?php
/**
* File containing the ezcConsoleStringTool class.
*
* @package ConsoleTools
* @version 1.6.1
* @copyright Copyright (C) 2005-2010 eZ Systems AS. All rights reserved.
* @license http://ez.no/licenses/new_bsd New BSD License
* @filesource
*/
/**
* String tool class.
*
* Tool class for the ConsoleTools package. Contains multi-byte encoding save
* string methods.
*
* @package ConsoleTools
* @version 1.6.1
* @access private
*/
class ezcConsoleStringTool
{
/**
* Binary safe wordwrap() replacement.
*
* This method is a multi-byte encoding safe replacement for the PHP
* function wordwrap(). It mimics exactly the behavior of wordwrap(), but
* uses iconv_* functions with UTF-8 encoding. The parameters received by
* this method equal the parameters of {@link http://php.net/wordwrap
* wordwrap()}. Note: Make sure to only hand UTF-8 encoded content to this
* method.
*
* @param string $str
* @param int $width
* @param string $break
* @param bool $cut
* @return string|false
*/
public function wordWrap( $str, $width = 75, $break = "\n", $cut = false )
{
$strlen = iconv_strlen( $str, 'UTF-8' );
$breaklen = iconv_strlen( $break, 'UTF-8' );
$newtext = '';
if ( $strlen === 0 )
{
return '';
}
if ( $breaklen === 0 )
{
return false;
}
if ( $width === 0 && $cut )
{
return false;
}
$laststart = $lastspace = 0;
$breakstart = iconv_substr( $break, 0, 1, 'UTF-8' );
for ( $current = 0; $current < $strlen; $current++ )
{
$char = iconv_substr( $str, $current, 1, 'UTF-8' );
// Existing line break, copy line and start a new one
if ( $char === $breakstart
&& $current + $breaklen < $strlen
&& iconv_substr( $str, $current, $breaklen, 'UTF-8' ) === $break
)
{
$newtext .= iconv_substr( $str, $laststart, $current - $laststart + $breaklen, 'UTF-8' );
$current += $breaklen - 1;
$laststart = $lastspace = $current + 1;
}
// Keep track of spaces, if line break is necessary, do it
else if ( $char === ' ' )
{
if ( $current - $laststart >= $width )
{
$newtext .= iconv_substr( $str, $laststart, $current - $laststart, 'UTF-8' )
. $break;
$laststart = $current + 1;
}
$lastspace = $current;
}
// Special cut case, if no space has been seen
else if ( $current - $laststart >= $width
&& $cut && $laststart >= $lastspace
)
{
$newtext .= iconv_substr( $str, $laststart, $current - $laststart, 'UTF-8' )
. $break;
$laststart = $lastspace = $current;
}
// Usual case that line got longer than expected
else if ( $current - $laststart >= $width
&& $laststart < $lastspace
)
{
$newtext .= iconv_substr( $str, $laststart, $lastspace - $laststart, 'UTF-8' )
. $break;
// $laststart = $lastspace = $lastspace + 1;
$laststart = ++$lastspace;
}
}
// Rest of the string
if ( $laststart !== $current )
{
$newtext .= iconv_substr( $str, $laststart, $current - $laststart, 'UTF-8' );
}
return $newtext;
}
/**
* Binary safe str_pad() replacement.
*
* This method is a multi-byte encoding safe replacement for the PHP
* function str_pad(). It mimics exactly the behavior of str_pad(), but
* uses iconv_* functions with UTF-8 encoding. The parameters received by
* this method equal the parameters of {@link http://php.net/str_pad
* str_pad()}. Note: Make sure to hand only UTF-8 encoded content to this
* method.
*
* @param string $input
* @param int $padLength
* @param string $padString
* @param int $padType
* @return string
*/
public function strPad( $input, $padLength, $padString = ' ', $padType = STR_PAD_RIGHT )
{
$input = (string) $input;
$strLen = iconv_strlen( $input, 'UTF-8' );
$padStrLen = iconv_strlen( $padString, 'UTF-8' );
if ( $strLen >= $padLength )
{
return $input;
}
if ( $padType === STR_PAD_BOTH )
{
return $this->strPad(
$this->strPad(
$input,
$strLen + ceil( ( $padLength - $strLen ) / 2 ),
$padString
),
$padLength,
$padString,
STR_PAD_LEFT
);
}
$fullStrRepeats = (int) ( ( $padLength - $strLen ) / $padStrLen );
$partlyPad = iconv_substr(
$padString,
0,
( ( $padLength - $strLen ) % $padStrLen )
);
$padding = str_repeat( $padString, $fullStrRepeats ) . $partlyPad;
switch ( $padType )
{
case STR_PAD_LEFT:
return $padding . $input;
case STR_PAD_RIGHT:
default:
return $input . $padding;
}
}
}
?>
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