This PR was merged into the 5.0-dev branch. Discussion ---------- [String] a new component for object-oriented strings management with an abstract unit system | Q | A | ------------- | --- | Branch? | master | Bug fix? | no | New feature? | yes | Deprecations? | no | Tickets | - | License | MIT | Doc PR | - This is a reboot of #22184 (thanks @hhamon for working on it) and a generalization of my previous work on the topic ([patchwork/utf8](https://github.com/tchwork/utf8)). Unlike existing libraries (including `patchwork/utf8`), this component provides a unified API for the 3 unit systems of strings: bytes, code points and grapheme clusters. The unified API is defined by the `AbstractString` class. It has 2 direct child classes: `BinaryString` and `AbstractUnicodeString`, itself extended by `Utf8String` and `GraphemeString`. All objects are immutable and provide clear edge-case semantics, using exceptions and/or (nullable) types! Two helper functions are provided to create such strings: ```php new GraphemeString('foo') == u('foo'); // when dealing with Unicode, prefer grapheme units new BinaryString('foo') == b('foo'); ``` `GraphemeString` is the most linguistic-friendly variant of them, which means it's the one ppl should use most of the time *when dealing with written text*. Future ideas: - improve tests - add more docblocks (only where they'd add value!) - consider adding more methods in the string API (`is*()?`, `*Encode()`?, etc.) - first class Emoji support - merge the Inflector component into this one - use `width()` to improve `truncate()` and `wordwrap()` - move method `slug()` to a dedicated locale-aware service class - propose your ideas (send PRs after merge) Out of (current) scope: - what [intl](https://php.net/intl) provides (collations, transliterations, confusables, segmentation, etc) Here is the unified API I'm proposing in this PR, borrowed from looking at many existing libraries, but also Java, Python, JavaScript and Go. ```php function __construct(string $string = ''); static function unwrap(array $values): array static function wrap(array $values): array function after($needle, bool $includeNeedle = false, int $offset = 0): self; function afterLast($needle, bool $includeNeedle = false, int $offset = 0): self; function append(string ...$suffix): self; function before($needle, bool $includeNeedle = false, int $offset = 0): self; function beforeLast($needle, bool $includeNeedle = false, int $offset = 0): self; function camel(): self; function chunk(int $length = 1): array; function collapseWhitespace(): self function endsWith($suffix): bool; function ensureEnd(string $suffix): self; function ensureStart(string $prefix): self; function equalsTo($string): bool; function folded(): self; function ignoreCase(): self; function indexOf($needle, int $offset = 0): ?int; function indexOfLast($needle, int $offset = 0): ?int; function isEmpty(): bool; function join(array $strings): self; function jsonSerialize(): string; function length(): int; function lower(): self; function match(string $pattern, int $flags = 0, int $offset = 0): array; function padBoth(int $length, string $padStr = ' '): self; function padEnd(int $length, string $padStr = ' '): self; function padStart(int $length, string $padStr = ' '): self; function prepend(string ...$prefix): self; function repeat(int $multiplier): self; function replace(string $from, string $to): self; function replaceMatches(string $fromPattern, $to): self; function slice(int $start = 0, int $length = null): self; function snake(): self; function splice(string $replacement, int $start = 0, int $length = null): self; function split(string $delimiter, int $limit = null, int $flags = null): array; function startsWith($prefix): bool; function title(bool $allWords = false): self; function toBinary(string $toEncoding = null): BinaryString; function toGrapheme(): GraphemeString; function toUtf8(): Utf8String; function trim(string $chars = " \t\n\r\0\x0B\x0C\u{A0}\u{FEFF}"): self; function trimEnd(string $chars = " \t\n\r\0\x0B\x0C\u{A0}\u{FEFF}"): self; function trimStart(string $chars = " \t\n\r\0\x0B\x0C\u{A0}\u{FEFF}"): self; function truncate(int $length, string $ellipsis = ''): self; function upper(): self; function width(bool $ignoreAnsiDecoration = true): int; function wordwrap(int $width = 75, string $break = "\n", bool $cut = false): self; function __clone(); function __toString(): string; ``` `AbstractUnicodeString` adds these: ```php static function fromCodePoints(int ...$codes): self; function ascii(array $rules = []): self; function codePoint(int $index = 0): ?int; function folded(bool $compat = true): parent; function normalize(int $form = self::NFC): self; function slug(string $separator = '-'): self; ``` and `BinaryString`: ```php static function fromRandom(int $length = 16): self; function byteCode(int $index = 0): ?int; function isUtf8(): bool; function toUtf8(string $fromEncoding = null): Utf8String; function toGrapheme(string $fromEncoding = null): GraphemeString; ``` Case insensitive operations are done with the `ignoreCase()` method. e.g. `b('abc')->ignoreCase()->indexOf('B')` will return `1`. For reference, CLDR transliterations (used in the `ascii()` method) are defined here: https://github.com/unicode-org/cldr/tree/master/common/transforms Commits -------dd8745aced
[String] add more tests82a00956bc
[String] add tests012e92a772
[String] a new component for object-oriented strings management with an abstract unit system
168 lines
6.2 KiB
JSON
168 lines
6.2 KiB
JSON
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