107 lines
2.8 KiB
PHP
107 lines
2.8 KiB
PHP
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<?php
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namespace Laravel\Prompts\Concerns;
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use InvalidArgumentException;
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trait Truncation
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{
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/**
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* Truncate a value with an ellipsis if it exceeds the given width.
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*/
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protected function truncate(string $string, int $width): string
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{
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if ($width <= 0) {
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throw new InvalidArgumentException("Width [{$width}] must be greater than zero.");
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}
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return mb_strwidth($string) <= $width ? $string : (mb_strimwidth($string, 0, $width - 1).'…');
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}
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/**
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* Multi-byte version of wordwrap.
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*
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* @param non-empty-string $break
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*/
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protected function mbWordwrap(
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string $string,
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int $width = 75,
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string $break = "\n",
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bool $cut_long_words = false
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): string {
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$lines = explode($break, $string);
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$result = [];
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foreach ($lines as $originalLine) {
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if (mb_strwidth($originalLine) <= $width) {
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$result[] = $originalLine;
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continue;
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}
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$words = explode(' ', $originalLine);
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$line = null;
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$lineWidth = 0;
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if ($cut_long_words) {
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foreach ($words as $index => $word) {
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$characters = mb_str_split($word);
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$strings = [];
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$str = '';
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foreach ($characters as $character) {
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$tmp = $str.$character;
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if (mb_strwidth($tmp) > $width) {
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$strings[] = $str;
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$str = $character;
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} else {
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$str = $tmp;
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}
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}
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if ($str !== '') {
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$strings[] = $str;
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}
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$words[$index] = implode(' ', $strings);
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}
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$words = explode(' ', implode(' ', $words));
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}
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foreach ($words as $word) {
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$tmp = ($line === null) ? $word : $line.' '.$word;
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// Look for zero-width joiner characters (combined emojis)
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preg_match('/\p{Cf}/u', $word, $joinerMatches);
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$wordWidth = count($joinerMatches) > 0 ? 2 : mb_strwidth($word);
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$lineWidth += $wordWidth;
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if ($line !== null) {
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// Space between words
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$lineWidth += 1;
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}
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if ($lineWidth <= $width) {
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$line = $tmp;
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} else {
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$result[] = $line;
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$line = $word;
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$lineWidth = $wordWidth;
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}
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}
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if ($line !== '') {
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$result[] = $line;
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}
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$line = null;
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}
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return implode($break, $result);
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}
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}
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