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<?php
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function str_length(string $str, bool $skip_ctrl_seq = false) : int
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{
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$len = strlen($str);
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$ret = 0;
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for ($i = 0; $i < $len; $i++)
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{
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$c = $str[$i];
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if ($c == "\r" || $c == "\7") // skip
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{
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continue;
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}
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if ($skip_ctrl_seq && $c == "\033" && $i + 1 < $len && $str[$i + 1] == "[") // Skip control sequence
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| 17 |
{
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for ($i = $i + 2;
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| 19 |
$i < $len && (ctype_digit($str[$i]) || $str[$i] == ';' || $str[$i] == '?');
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| 20 |
$i++)
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| 21 |
;
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| 22 |
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| 23 |
if ($i < $len && $str[$i] == 'm') // valid
|
| 24 |
{
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| 25 |
// skip
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| 26 |
}
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else if ($i < $len && ctype_alpha($str[$i]))
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| 28 |
{
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// unsupported ANSI CSI command
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}
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else
|
| 32 |
{
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| 33 |
$i--;
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| 34 |
}
|
| 35 |
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| 36 |
continue;
|
| 37 |
}
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| 38 |
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| 39 |
// Process UTF-8 Chinese characters
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| 40 |
$v1 = ord($c);
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| 41 |
if ($v1 & 0x80) //head of multi-byte character
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| 42 |
{
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| 43 |
$v2 = ($v1 & 0x70) << 1;
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| 44 |
while ($v2 & 0x80)
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| 45 |
{
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| 46 |
$i++;
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$c .= $str[$i];
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$v2 = ($v2 & 0x7f) << 1;
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| 49 |
}
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| 50 |
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$ret += 2;
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}
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else
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{
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$ret++;
|
| 56 |
}
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}
|
| 58 |
|
| 59 |
return $ret;
|
| 60 |
}
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| 61 |
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| 62 |
function split_line(string $str, string $prefix = "", int $width = PHP_INT_MAX, int $lines_limit = PHP_INT_MAX, string $end_of_line = "\n") : string
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| 63 |
{
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| 64 |
if ($width <= 0)
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{
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| 66 |
$width = PHP_INT_MAX;
|
| 67 |
}
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| 68 |
|
| 69 |
$result = "";
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| 70 |
$len = strlen($str);
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| 71 |
$prefix_len = str_length($prefix);
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| 72 |
|
| 73 |
$lines_count = 0;
|
| 74 |
|
| 75 |
$line = $prefix;
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| 76 |
$line_len = $prefix_len;
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| 77 |
for ($i = 0; $i < $len && $lines_count < $lines_limit; $i++)
|
| 78 |
{
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| 79 |
$c = $str[$i];
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| 80 |
|
| 81 |
// Skip special characters
|
| 82 |
if ($c == "\r" || $c == "\7")
|
| 83 |
{
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| 84 |
continue;
|
| 85 |
}
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| 86 |
|
| 87 |
if ($c == "\n")
|
| 88 |
{
|
| 89 |
if ($lines_count + 1 >= $lines_limit)
|
| 90 |
{
|
| 91 |
break;
|
| 92 |
}
|
| 93 |
|
| 94 |
$result .= ($line . $end_of_line);
|
| 95 |
$lines_count++;
|
| 96 |
$line = $prefix;
|
| 97 |
$line_len = $prefix_len;
|
| 98 |
continue;
|
| 99 |
}
|
| 100 |
|
| 101 |
// Process UTF-8 Chinese characters
|
| 102 |
$v1 = ord($c);
|
| 103 |
if ($v1 & 0x80) //head of multi-byte character
|
| 104 |
{
|
| 105 |
$v2 = ($v1 & 0x70) << 1;
|
| 106 |
while ($v2 & 0x80)
|
| 107 |
{
|
| 108 |
$i++;
|
| 109 |
$c .= $str[$i];
|
| 110 |
$v2 = ($v2 & 0x7f) << 1;
|
| 111 |
}
|
| 112 |
|
| 113 |
// Each UTF-8 CJK character should use two character length for display
|
| 114 |
if ($line_len + 2 > $width)
|
| 115 |
{
|
| 116 |
if ($lines_count + 1 >= $lines_limit)
|
| 117 |
{
|
| 118 |
break;
|
| 119 |
}
|
| 120 |
|
| 121 |
$result .= ($line . $end_of_line);
|
| 122 |
$lines_count++;
|
| 123 |
$line = $prefix;
|
| 124 |
$line_len = $prefix_len;
|
| 125 |
}
|
| 126 |
$line_len += 2;
|
| 127 |
}
|
| 128 |
else
|
| 129 |
{
|
| 130 |
$line_len++;
|
| 131 |
}
|
| 132 |
|
| 133 |
if ($line_len > $width)
|
| 134 |
{
|
| 135 |
if ($lines_count + 1 >= $lines_limit)
|
| 136 |
{
|
| 137 |
break;
|
| 138 |
}
|
| 139 |
|
| 140 |
$result .= ($line . $end_of_line);
|
| 141 |
$lines_count++;
|
| 142 |
$line = $prefix;
|
| 143 |
$line_len = $prefix_len + 1;
|
| 144 |
}
|
| 145 |
|
| 146 |
$line .= $c;
|
| 147 |
}
|
| 148 |
|
| 149 |
if ($lines_count < $lines_limit)
|
| 150 |
{
|
| 151 |
$result .= $line;
|
| 152 |
}
|
| 153 |
|
| 154 |
return $result;
|
| 155 |
}
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