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update strings class with split counter method

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This commit is contained in:
Clemens Schwaighofer
2022-07-29 13:19:45 +09:00
parent bcdb877d90
commit 9a3ea2f7db
3 changed files with 161 additions and 12 deletions
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10
www/admin/class_test.strings.php
View File

@@ -68,7 +68,15 @@ print "Convert: $string with $split to: "
. \CoreLibs\Convert\Strings::splitFormatString($string, $split)
. "<br>";
$test_splits = [
'',
'2',
'2-2',
'2-3-4',
];
foreach ($test_splits as $split) {
print "$split with count: " . \CoreLibs\Convert\Strings::countSplitParts($split) . "<br>";
}
// error message
print $log->printErrorMsg();

55
www/lib/CoreLibs/Convert/Strings.php
View File

@@ -10,6 +10,38 @@ namespace CoreLibs\Convert;
class Strings
{
/**
* return the elements in the split list
* 0 if nothing / invalid split
* 1 if no split character found
*
* @param string $split_format
* @param string $split_characters
* @return int
*/
public static function countSplitParts(
string $split_format,
string $split_characters = '-'
): int {
if (
empty($split_format) ||
// non valid characters inside, abort
!preg_match("/^[0-9" . $split_characters . "]/", $split_format) ||
preg_match('/[^\x20-\x7e]/', $split_characters)
) {
return 0;
}
$split_list = preg_split(
// allowed split characters
"/([" . $split_characters . "]{1})/",
$split_format
);
if (!is_array($split_list)) {
return 0;
}
return count(array_filter($split_list));
}
/**
* split format a string base on a split format string
* split format string is eg
@@ -31,18 +63,19 @@ class Strings
string $split_format,
string $split_characters = '-'
): string {
// abort if split format is empty
if (empty($split_format)) {
if (
// abort if split format is empty
empty($split_format) ||
// if not in the valid ASCII character range for any of the strings
preg_match('/[^\x20-\x7e]/', $value) ||
// preg_match('/[^\x20-\x7e]/', $split_format) ||
preg_match('/[^\x20-\x7e]/', $split_characters) ||
// only numbers and split characters in split_format
!preg_match("/[0-9" . $split_characters . "]/", $split_format)
) {
return $value;
}
// if not in the valid ASCII character range
// might need some tweaking
if (preg_match('/[^\x20-\x7e]/', $value)) {
return $value;
}
// if (!mb_check_encoding($value, 'ASCII')) {
// return $value;
// }
// split format list
$split_list = preg_split(
// allowed split characters
"/([" . $split_characters . "]{1})/",
@@ -65,7 +98,7 @@ class Strings
}
$out .= $_part;
$pos += (int)$offset;
} else {
} elseif ($pos) { // if first, do not add
$out .= $offset;
$last_split = $offset;
}