utils/lib/str_process.inc.php

<?php
function str_length(string $str) : string
{
        $len = strlen($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	<?php
2	function str_length(string $str) : string
3	{
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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