| 1 |
<?
|
| 2 |
function str_length($str)
|
| 3 |
{
|
| 4 |
$len = strlen($str);
|
| 5 |
$ret = 0;
|
| 6 |
|
| 7 |
for ($i = 0; $i < $len; $i++)
|
| 8 |
{
|
| 9 |
$c = $str[$i];
|
| 10 |
|
| 11 |
// Process UTF-8 Chinese characters
|
| 12 |
$v1 = ord($c);
|
| 13 |
if (($v1 & 0b10000000) == 0b10000000) //head of multi-byte character
|
| 14 |
{
|
| 15 |
$v2 = ($v1 & 0b01111000) << 1;
|
| 16 |
while ($v2 & 0b10000000)
|
| 17 |
{
|
| 18 |
$i++;
|
| 19 |
$v3 = $str[$i];
|
| 20 |
$c .= $v3;
|
| 21 |
$v2 = ($v2 & 0b01111111 ) << 1;
|
| 22 |
}
|
| 23 |
|
| 24 |
$ret += 2;
|
| 25 |
}
|
| 26 |
else
|
| 27 |
{
|
| 28 |
$ret++;
|
| 29 |
}
|
| 30 |
}
|
| 31 |
|
| 32 |
return $ret;
|
| 33 |
}
|
| 34 |
|
| 35 |
function split_line($str, $prefix = "", $width = 76, $lines_limit = PHP_INT_MAX)
|
| 36 |
{
|
| 37 |
if ($width <= 0)
|
| 38 |
return $str;
|
| 39 |
|
| 40 |
$result = "";
|
| 41 |
$len = strlen($str);
|
| 42 |
$prefix_len = str_length($prefix);
|
| 43 |
|
| 44 |
$lines_count = 0;
|
| 45 |
|
| 46 |
$line = $prefix;
|
| 47 |
$line_len = $prefix_len;
|
| 48 |
for ($i = 0; $i < $len && $lines_count < $lines_limit; $i++)
|
| 49 |
{
|
| 50 |
$c = $str[$i];
|
| 51 |
|
| 52 |
// Skip special characters
|
| 53 |
if ($c == "\r" || $c == "\7")
|
| 54 |
{
|
| 55 |
continue;
|
| 56 |
}
|
| 57 |
|
| 58 |
if ($c == "\n")
|
| 59 |
{
|
| 60 |
$result .= ($line . "\n");
|
| 61 |
$lines_count++;
|
| 62 |
$line = $prefix;
|
| 63 |
$line_len = $prefix_len;
|
| 64 |
continue;
|
| 65 |
}
|
| 66 |
|
| 67 |
// Process UTF-8 Chinese characters
|
| 68 |
$v1 = ord($c);
|
| 69 |
if (($v1 & 0b10000000) == 0b10000000) //head of multi-byte character
|
| 70 |
{
|
| 71 |
$v2 = ($v1 & 0b01111000) << 1;
|
| 72 |
while ($v2 & 0b10000000)
|
| 73 |
{
|
| 74 |
$i++;
|
| 75 |
$v3 = $str[$i];
|
| 76 |
$c .= $v3;
|
| 77 |
$v2 = ($v2 & 0b01111111 ) << 1;
|
| 78 |
}
|
| 79 |
|
| 80 |
// Each UTF-8 CJK character should use two character length for display
|
| 81 |
if ($line_len + 2 > $width)
|
| 82 |
{
|
| 83 |
if ($lines_count + 1 >= $lines_limit)
|
| 84 |
{
|
| 85 |
break;
|
| 86 |
}
|
| 87 |
|
| 88 |
$result .= ($line . "\n");
|
| 89 |
$lines_count++;
|
| 90 |
$line = $prefix;
|
| 91 |
$line_len = $prefix_len;
|
| 92 |
}
|
| 93 |
$line_len += 2;
|
| 94 |
}
|
| 95 |
else
|
| 96 |
{
|
| 97 |
$line_len++;
|
| 98 |
}
|
| 99 |
|
| 100 |
$line .= $c;
|
| 101 |
|
| 102 |
if ($line_len >= $width)
|
| 103 |
{
|
| 104 |
if ($lines_count + 1 >= $lines_limit)
|
| 105 |
{
|
| 106 |
break;
|
| 107 |
}
|
| 108 |
|
| 109 |
$result .= ($line . "\n");
|
| 110 |
$lines_count++;
|
| 111 |
$line = $prefix;
|
| 112 |
$line_len = $prefix_len;
|
| 113 |
}
|
| 114 |
}
|
| 115 |
|
| 116 |
if ($lines_count < $lines_limit)
|
| 117 |
{
|
| 118 |
$result .= $line;
|
| 119 |
}
|
| 120 |
|
| 121 |
return $result;
|
| 122 |
}
|
| 123 |
?>
|
Parent Directory
| 
Revision Log