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cutStringForWidth, subStringForWidth 재 구현

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2018-04-07 16:57:21 +09:00
parent f5494a69a2
commit 85e6faf92c
6 changed files with 69 additions and 165 deletions
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src/sammo/StringUtil.php
+60 -156
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@@ -3,169 +3,75 @@ namespace sammo;
class StringUtil
{
public static function GetStrLen($str)
/**
* 전각, 반각 길이 기준의 substr
* @param string $str 원본 문자열
* @param int $start 시작 너비. 일치하는 문자가 없을 경우 그 다음 문자부터. 음수의 경우 뒤에서부터.
* @param int|null $width 길이. null일 경우 끝까지.
*/
public static function subStringForWidth(string $str, int $start = 0, $width = null)
{
$count = strlen($str);
$len = 0;
for ($i=0; $i < $count;) {
$code = ord($str[$i]);
if ($code >= 0xf0) {
$len++;
$i += 4;
} elseif ($code >= 0xe0) {
$len++;
$i += 3;
} elseif ($code >= 0xc2) {
$len++;
$i += 2;
} else {
$len++;
$i += 1;
}
$length = mb_strwidth($str, 'UTF-8');
if($width === null){
$width = $length;
}
return $len;
if($start < 0){
$start = $length - $start;
}
/* 길이를 직관적으로 알아낼 수 있는 방법은 '없다'.
* utf8의 경우 뒤에서부터 세는 것 전략이 가능하나 제외함.
*/
$currentPos = 0;
$currentWidth = 0;
$strings = static::splitString($str);
foreach($strings as $idx=>$char){
$charWidth = mb_strwidth($char, 'UTF-8');
if($currentPos+$charWidth > $start){
break;
}
$currentPos += $charWidth;
}
if($currentPos + $width >= $length){
return substr($str, $currentPos, null);
}
for($idx = $currentPos; $idx < count($strings); $idx++){
$char = $strings[$idx];
$charWidth = mb_strwidth($char, 'UTF-8');
if($currentWidth + $charWidth > $width){
break;
}
$currentWidth += $charWidth;
}
return substr($str, $currentPos, $currentWidth);
}
public static function SubStr($str, $s, $l=1000)
public static function cutStringForWidth(string $str, int $width, string $endFill='..')
{
$count = strlen($str);
$startByte = 0;
$isSet = 0;
$endByte = $count;
$len = 0;
for ($i=0; $i < $count;) {
$code = ord($str[$i]);
if(mb_strwidth($str) <= $width){
return $str;
}
if ($isSet == 0 && $len >= $s) {
$startByte = $i;
$isSet = 1;
}
if ($isSet == 1 && $len-$s >= $l) {
$endByte = $i;
$result = '';
$width -= mb_strwidth($endFill, 'UTF-8');
foreach(static::splitString($str) as $char){
$charWidth = mb_strwidth($char, 'UTF-8');
if($charWidth > $width){
break;
}
if ($code >= 0xf0) {
$len++;
$i += 4;
} elseif ($code >= 0xe0) {
$len++;
$i += 3;
} elseif ($code >= 0xc2) {
$len++;
$i += 2;
} else {
$len++;
$i += 1;
}
$result .= $char;
$width -= $charWidth;
}
$str = substr($str, $startByte, $endByte-$startByte);
return $str;
}
public static function SubStrForWidth($str, $s, $w)
{
$count = strlen($str);
$startByte = 0;
$isSet = 0;
$endByte = $count;
$last = 0;
$len = 0;
$width = 0;
for ($i=0; $i < $count;) {
$code = ord($str[$i]);
if ($isSet == 0 && $len >= $s) {
$startByte = $i;
$isSet = 1;
$width = 0;
}
if ($isSet == 1 && $width == $w) {
$endByte = $i;
break;
}
if ($isSet == 1 && $width > $w) {
$endByte = $i - $last;
break;
}
if ($code >= 0xf0) {
$len++;
$width += 2;
$last = 4;
$i += 4;
} elseif ($code >= 0xe0) {
$len++;
$width += 2;
$last = 3;
$i += 3;
} elseif ($code >= 0xc2) {
$len++;
$width += 2;
$last = 2;
$i += 2;
} else {
$len++;
$width += 1;
$last = 1;
$i += 1;
}
}
$str = substr($str, $startByte, $endByte-$startByte);
return $str;
}
public static function CutStrForWidth($str, $s, $w, $ch='..')
{
$isCut = 0;
$count = strlen($str);
$startByte = 0;
$isSet = 0;
$endByte = $count;
$last = 0;
$len = 0;
$width = 0;
for ($i=0; $i < $count;) {
$code = ord($str[$i]);
if ($isSet == 0 && $len >= $s) {
$startByte = $i;
$isSet = 1;
$width = 0;
}
if ($isSet == 1 && $width >= $w) {
$endByte = $i - $last;
$isCut = 1;
break;
}
if ($code >= 0xf0) {
$len++;
$width += 2;
$last = 4;
$i += 4;
} elseif ($code >= 0xe0) {
$len++;
$width += 2;
$last = 3;
$i += 3;
} elseif ($code >= 0xc2) {
$len++;
$width += 2;
$last = 2;
$i += 2;
} else {
$len++;
$width += 1;
$last = 1;
$i += 1;
}
}
if ($isCut != 0) {
$str = substr($str, $startByte, $endByte-$startByte) . $ch;
}
return $str;
return $result.$endFill;
}
function splitString($str, $l = 0) {
@@ -228,12 +134,10 @@ class StringUtil
return static::padString($str, $maxsize, $ch, 0);
}
public static function EscapeTag($str)
public static function escapeTag($str)
{
$str = htmlspecialchars($str);
$str = str_replace(["\r\n", "\r", "\n"], '<br>', $str);
// return nl2br(htmlspecialchars($str));
// return htmlspecialchars($str);
return $str;
}