--- fenglin/lib/str_process.inc.php	2004/06/25 08:26:49	1.2
+++ fenglin/lib/str_process.inc.php	2025/03/01 09:02:28	1.9
@@ -1,55 +1,64 @@
 <?
 
-function split_line($str,$pre="",$width=75)
+function split_line($str,$prefix="",$width=76)
 {
-	$lines = array();
-	$lines_count = 0;
-	$len = strlen($str);
-
-	$hz_ok = true;
-	
 	if ($width<=0)
 		return $str;
 	
-	$line = $pre;
-	$line_count = strlen($line);
+	$result = "";
+	$len = mb_strlen($str,'UTF-8');
+	$prefix_len = mb_strlen($prefix,'UTF-8');
+
+	$line = $prefix;
+	$line_len = $prefix_len;
 	for($i=0;$i<$len;$i++)
 	{
-		if ($line_count >= $width && $hz_ok)
+		$c = mb_substr($str,$i,1,'UTF-8');
+		$line.=$c;
+
+		// Each UTF-8 CJK character should use two character length for display
+		$line_len += (strlen($c) <= 2 ? 1 : 2);
+
+		if ($line_len >= $width)
 		{
-			$lines[$lines_count++] = $line;
-			$line = $pre;
-			$line_count = strlen($line);
+			$result .= ($line . "\n");
+			$line = $prefix;
+			$line_len = $prefix_len;
 		}
-		$line.=$str[$i];
-		$line_count++;
-		if (ord($str[$i])>127)
-			$hz_ok = (!$hz_ok);
-		if (ord($str[$i])<=127)
-			$hz_ok = true;
 	}
-	$lines[$lines_count++] = $line;
+	$result .= ($line . "\n");
 
-	$result = "";
-	for($i=0;$i<$lines_count;$i++)
-	{
-		$result.=($lines[$i]."\r\n");
-	}
 	return $result;
 }
 
-function str_process($str,$pre="",$width=75)
+function str_process($str,$prefix="",$width=76)
 {
 	$result = "";
 	
 	$lines = explode("\n",str_replace("\r\n","\n",$str));
 
-	foreach($lines as $line)
+	foreach($lines as $tmp => $line)
 	{
-		$result .= split_line($line,$pre,$width);
+		$result .= split_line($line,$prefix,$width);
 	}
 	
 	return $result;
 }
 
+function str_b_lines($str,$max_line=1)
+{
+	$result = "";
+	$l = 0;
+	$lines = explode("\n",str_replace("\r\n","\n",$str));
+	foreach($lines as $tmp => $line)
+	{
+		$result .= ($line."\n");
+		$l += (mb_strlen($line,'UTF-8')/128 + 1);
+		if ($l >= $max_line)
+			break;
+	}
+
+	return $result;
+}
+
 ?>