utils/lib/str_process.inc.php

<?php
function str_length(string $str) : int
{
        $len = strlen($str);
        $ret = 0;

        for ($i = 0; $i < $len; $i++)
        {
                $c = $str[$i];

                // Process GBK Chinese characters
                $v1 = ord($c);
                if ($v1 > 127 && $v1 <= 255) // GBK chinese character
                {
                        $i++;
                        $c .= $str[$i];

                        $ret += 2;
                }
                else
                {
                        $ret++;
                }
        }

        return $ret;
}

function split_line(string $str, string $prefix = "", int $width = 76, int $lines_limit = PHP_INT_MAX, string $end_of_line = "\n") : string
{
        if ($width <= 0)
        {
                return $str;
        }

        $result = "";
        $len = strlen($str);
        $prefix_len = str_length($prefix);

        $lines_count = 0;

        $line = $prefix;
        $line_len = $prefix_len;
        for ($i = 0; $i < $len && $lines_count < $lines_limit; $i++)
        {
                $c = $str[$i];

                // Skip special characters
                if ($c == "\r" || $c == "\7")
                {
                        continue;
                }

                if ($c == "\n")
                {
                        if ($lines_count + 1 >= $lines_limit)
                        {
                                break;
                        }

                        $result .= ($line . $end_of_line);
                        $lines_count++;
                        $line = $prefix;
                        $line_len = $prefix_len;
                        continue;
                }

                // Process GBK Chinese characters
                $v1 = ord($c);
                if ($v1 > 127 && $v1 <= 255) // GBK chinese character
                {
                        $i++;
                        $c .= $str[$i];

                        // Each GBK CJK character should use two character length for display
                        if ($line_len + 2 > $width)
                        {
                                if ($lines_count + 1 >= $lines_limit)
                                {
                                        break;
                                }

                                $result .= ($line . $end_of_line);
                                $lines_count++;
                                $line = $prefix;
                                $line_len = $prefix_len;
                        }
                        $line_len += 2;
                }
                else
                {
                        $line_len++;
                }

                if ($line_len > $width)
                {
                        if ($lines_count + 1 >= $lines_limit)
                        {
                                break;
                        }

                        $result .= ($line . $end_of_line);
                        $lines_count++;
                        $line = $prefix;
                        $line_len = $prefix_len + 1;
                }

                $line .= $c;
        }

        if ($lines_count < $lines_limit)
        {
                $result .= $line;
        }

        return $result;
}
1	sysadm	1.1	<?php
2	sysadm	1.2	function str_length(string $str) : int
3	sysadm	1.1	{
4			$len = strlen($str);
5			$ret = 0;
6
7			for ($i = 0; $i < $len; $i++)
8			{
9			$c = $str[$i];
10
11			// Process GBK Chinese characters
12			$v1 = ord($c);
13			if ($v1 > 127 && $v1 <= 255) // GBK chinese character
14			{
15			$i++;
16			$c .= $str[$i];
17
18			$ret += 2;
19			}
20			else
21			{
22			$ret++;
23			}
24			}
25
26			return $ret;
27			}
28
29			function split_line(string $str, string $prefix = "", int $width = 76, int $lines_limit = PHP_INT_MAX, string $end_of_line = "\n") : string
30			{
31			if ($width <= 0)
32			{
33			return $str;
34			}
35
36			$result = "";
37			$len = strlen($str);
38			$prefix_len = str_length($prefix);
39
40			$lines_count = 0;
41
42			$line = $prefix;
43			$line_len = $prefix_len;
44			for ($i = 0; $i < $len && $lines_count < $lines_limit; $i++)
45			{
46			$c = $str[$i];
47
48			// Skip special characters
49			if ($c == "\r" \|\| $c == "\7")
50			{
51			continue;
52			}
53
54			if ($c == "\n")
55			{
56			if ($lines_count + 1 >= $lines_limit)
57			{
58			break;
59			}
60
61			$result .= ($line . $end_of_line);
62			$lines_count++;
63			$line = $prefix;
64			$line_len = $prefix_len;
65			continue;
66			}
67
68			// Process GBK Chinese characters
69			$v1 = ord($c);
70			if ($v1 > 127 && $v1 <= 255) // GBK chinese character
71			{
72			$i++;
73			$c .= $str[$i];
74
75			// Each GBK CJK character should use two character length for display
76			if ($line_len + 2 > $width)
77			{
78			if ($lines_count + 1 >= $lines_limit)
79			{
80			break;
81			}
82
83			$result .= ($line . $end_of_line);
84			$lines_count++;
85			$line = $prefix;
86			$line_len = $prefix_len;
87			}
88			$line_len += 2;
89			}
90			else
91			{
92			$line_len++;
93			}
94
95			if ($line_len > $width)
96			{
97			if ($lines_count + 1 >= $lines_limit)
98			{
99			break;
100			}
101
102			$result .= ($line . $end_of_line);
103			$lines_count++;
104			$line = $prefix;
105			$line_len = $prefix_len + 1;
106			}
107
108			$line .= $c;
109			}
110
111			if ($lines_count < $lines_limit)
112			{
113			$result .= $line;
114			}
115
116			return $result;
117			}
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