mirror of
https://code.mensbeam.com/MensBeam/Arsse.git
synced 2024-12-23 09:02:41 +00:00
350 lines
15 KiB
PHP
350 lines
15 KiB
PHP
<?php
|
|
/** @license MIT
|
|
* Copyright 2017 J. King, Dustin Wilson et al.
|
|
* See LICENSE and AUTHORS files for details */
|
|
|
|
declare(strict_types=1);
|
|
namespace JKingWeb\Arsse\Misc;
|
|
|
|
use JKingWeb\Arsse\ExceptionType;
|
|
|
|
class ValueInfo {
|
|
// universal
|
|
const VALID = 1 << 0;
|
|
const NULL = 1 << 1;
|
|
// integers
|
|
const ZERO = 1 << 2;
|
|
const NEG = 1 << 3;
|
|
const FLOAT = 1 << 4;
|
|
// strings
|
|
const EMPTY = 1 << 2;
|
|
const WHITE = 1 << 3;
|
|
//normalization types
|
|
const T_MIXED = 0; // pass through unchanged
|
|
const T_NULL = 1; // convert to null
|
|
const T_BOOL = 2; // convert to boolean
|
|
const T_INT = 3; // convert to integer
|
|
const T_FLOAT = 4; // convert to floating point
|
|
const T_DATE = 5; // convert to DateTimeInterface instance
|
|
const T_STRING = 6; // convert to string
|
|
const T_ARRAY = 7; // convert to array
|
|
//normalization modes
|
|
const M_NULL = 1 << 28; // pass nulls through regardless of target type
|
|
const M_DROP = 1 << 29; // drop the value (return null) if the type doesn't match
|
|
const M_STRICT = 1 << 30; // throw an exception if the type doesn't match
|
|
const M_ARRAY = 1 << 31; // the value should be a flat array of values of the specified type; indexed and associative are both acceptable
|
|
|
|
public function normalize($value, int $type, string $dateFormat = null) {
|
|
$allowNull = ($type & self::M_NULL);
|
|
$strict = ($type & (self::M_STRICT | self::M_DROP));
|
|
$drop = ($type & self::M_DROP);
|
|
$arrayVal = ($type & self::M_ARRAY);
|
|
$type = ($type & ~(self::M_NULL | self::M_DROP | self::M_STRICT | self::M_ARRAY));
|
|
// if the value is null and this is allowed, simply return
|
|
if ($allowNull && is_null($value)) {
|
|
return null;
|
|
}
|
|
// if the value is supposed to be an array, handle it specially
|
|
if ($arrayVal) {
|
|
$value = self::normalize($value, self::T_ARRAY);
|
|
foreach ($value as $key => $v) {
|
|
$value[$key] = self::normalize($v, $type | ($allowNull ? self::M_NULL : 0) | ($strict ? self::M_STRICT : 0) | ($drop ? self::M_DROP : 0), $dateFormat);
|
|
}
|
|
return $value;
|
|
}
|
|
switch ($type) {
|
|
case self::T_MIXED:
|
|
return $value;
|
|
case self::T_NULL:
|
|
return null;
|
|
case self::T_BOOL:
|
|
if (is_bool($value)) {
|
|
return $value;
|
|
}
|
|
$out = self::bool($value);
|
|
if ($strict && is_null($out)) {
|
|
// if strict and input is not a boolean, this is an error
|
|
if ($drop) {
|
|
return null;
|
|
}
|
|
throw new ExceptionType("strictFailure", $type);
|
|
} elseif (is_float($value) && is_nan($value)) {
|
|
return false;
|
|
} elseif (is_null($out)) {
|
|
// if not strict and input is not a boolean, return a simple type-cast
|
|
return (bool) $value;
|
|
}
|
|
return $out;
|
|
case self::T_INT:
|
|
if (is_int($value)) {
|
|
return $value;
|
|
} elseif ($value instanceof \DateTimeInterface) {
|
|
if ($strict && !$drop) {
|
|
throw new ExceptionType("strictFailure", $type);
|
|
}
|
|
return (!$drop) ? (int) $value->getTimestamp(): null;
|
|
}
|
|
$info = self::int($value);
|
|
if ($strict && !($info & self::VALID)) {
|
|
// if strict and input is not an integer, this is an error
|
|
if ($drop) {
|
|
return null;
|
|
}
|
|
throw new ExceptionType("strictFailure", $type);
|
|
} elseif (is_bool($value)) {
|
|
return (int) $value;
|
|
} elseif ($info & (self::VALID | self::FLOAT)) {
|
|
$out = strtolower((string) $value);
|
|
if (strpos($out, "e")) {
|
|
return (int) (float) $out;
|
|
} else {
|
|
return (int) $out;
|
|
}
|
|
} else {
|
|
return 0;
|
|
}
|
|
break;
|
|
case self::T_FLOAT:
|
|
if (is_float($value)) {
|
|
return $value;
|
|
} elseif ($value instanceof \DateTimeInterface) {
|
|
if ($strict && !$drop) {
|
|
throw new ExceptionType("strictFailure", $type);
|
|
}
|
|
return (!$drop) ? (float) $value->getTimestamp(): null;
|
|
} elseif (is_bool($value) && $strict) {
|
|
if ($drop) {
|
|
return null;
|
|
}
|
|
throw new ExceptionType("strictFailure", $type);
|
|
}
|
|
$out = filter_var($value, \FILTER_VALIDATE_FLOAT);
|
|
if ($strict && $out===false) {
|
|
// if strict and input is not a float, this is an error
|
|
if ($drop) {
|
|
return null;
|
|
}
|
|
throw new ExceptionType("strictFailure", $type);
|
|
}
|
|
return (float) $out;
|
|
case self::T_STRING:
|
|
if (is_string($value)) {
|
|
return $value;
|
|
}
|
|
if ($value instanceof \DateTimeImmutable) {
|
|
return $value->setTimezone(new \DateTimeZone("UTC"))->format(Date::FORMAT['iso8601'][1]);
|
|
} elseif ($value instanceof \DateTime) {
|
|
$out = clone $value;
|
|
$out->setTimezone(new \DateTimeZone("UTC"));
|
|
return $out->format(Date::FORMAT['iso8601'][1]);
|
|
} elseif (is_float($value) && is_finite($value)) {
|
|
$out = (string) $value;
|
|
if (!strpos($out, "E")) {
|
|
return $out;
|
|
} else {
|
|
$out = sprintf("%F", $value);
|
|
return substr($out, -2)==".0" ? (string) (int) $out : $out;
|
|
}
|
|
}
|
|
$info = self::str($value);
|
|
if (!($info & self::VALID)) {
|
|
if ($drop) {
|
|
return null;
|
|
} elseif ($strict) {
|
|
// if strict and input is not a string, this is an error
|
|
throw new ExceptionType("strictFailure", $type);
|
|
} elseif (!is_scalar($value)) {
|
|
return "";
|
|
} else {
|
|
return (string) $value;
|
|
}
|
|
} else {
|
|
return (string) $value;
|
|
}
|
|
break;
|
|
case self::T_DATE:
|
|
if ($value instanceof \DateTimeImmutable) {
|
|
return $value->setTimezone(new \DateTimeZone("UTC"));
|
|
} elseif ($value instanceof \DateTime) {
|
|
$out = clone $value;
|
|
$out->setTimezone(new \DateTimeZone("UTC"));
|
|
return $out;
|
|
} elseif (is_int($value)) {
|
|
return \DateTime::createFromFormat("U", (string) $value, new \DateTimeZone("UTC"));
|
|
} elseif (is_float($value)) {
|
|
return \DateTime::createFromFormat("U.u", sprintf("%F", $value), new \DateTimeZone("UTC"));
|
|
} elseif (is_string($value)) {
|
|
try {
|
|
if (!is_null($dateFormat)) {
|
|
$out = false;
|
|
if ($dateFormat=="microtime") {
|
|
// PHP is not able to correctly handle the output of microtime() as the input of DateTime::createFromFormat(), so we fudge it to look like a float
|
|
if (preg_match("<^0\.\d{6}00 \d+$>", $value)) {
|
|
$value = substr($value, 11).".".substr($value, 2, 6);
|
|
} else {
|
|
throw new \Exception;
|
|
}
|
|
}
|
|
$f = isset(Date::FORMAT[$dateFormat]) ? Date::FORMAT[$dateFormat][0] : $dateFormat;
|
|
if ($dateFormat=="iso8601" || $dateFormat=="iso8601m") {
|
|
// DateTime::createFromFormat() doesn't provide one catch-all for ISO 8601 timezone specifiers, so we try all of them till one works
|
|
if ($dateFormat=="iso8601m") {
|
|
$f2 = Date::FORMAT["iso8601"][0];
|
|
$zones = [$f."", $f."\Z", $f."P", $f."O", $f2."", $f2."\Z", $f2."P", $f2."O"];
|
|
} else {
|
|
$zones = [$f."", $f."\Z", $f."P", $f."O"];
|
|
}
|
|
do {
|
|
$ftz = array_shift($zones);
|
|
$out = \DateTime::createFromFormat($ftz, $value, new \DateTimeZone("UTC"));
|
|
} while (!$out && $zones);
|
|
} else {
|
|
$out = \DateTime::createFromFormat($f, $value, new \DateTimeZone("UTC"));
|
|
}
|
|
if (!$out) {
|
|
throw new \Exception;
|
|
}
|
|
return $out;
|
|
} else {
|
|
return new \DateTime($value, new \DateTimeZone("UTC"));
|
|
}
|
|
} catch (\Exception $e) {
|
|
if ($strict && !$drop) {
|
|
throw new ExceptionType("strictFailure", $type);
|
|
}
|
|
return null;
|
|
}
|
|
} elseif ($strict && !$drop) {
|
|
throw new ExceptionType("strictFailure", $type);
|
|
}
|
|
return null;
|
|
case self::T_ARRAY:
|
|
if (is_array($value)) {
|
|
return $value;
|
|
} elseif ($value instanceof \Traversable) {
|
|
$out = [];
|
|
foreach ($value as $k => $v) {
|
|
$out[$k] = $v;
|
|
}
|
|
return $out;
|
|
} else {
|
|
if ($drop) {
|
|
return null;
|
|
} elseif ($strict) {
|
|
// if strict and input is not a string, this is an error
|
|
throw new ExceptionType("strictFailure", $type);
|
|
} elseif (is_null($value) || (is_float($value) && is_nan($value))) {
|
|
return [];
|
|
} else {
|
|
return [$value];
|
|
}
|
|
}
|
|
break;
|
|
default:
|
|
throw new ExceptionType("typeUnknown", $type); // @codeCoverageIgnore
|
|
}
|
|
}
|
|
|
|
public static function int($value): int {
|
|
$out = 0;
|
|
if (is_null($value)) {
|
|
// check if the input is null
|
|
return self::NULL;
|
|
} elseif (is_string($value) || (is_object($value) && method_exists($value, "__toString"))) {
|
|
$value = strtolower((string) $value);
|
|
// normalize a string an integer or float if possible
|
|
if (!strlen($value)) {
|
|
// the empty string is equivalent to null when evaluating an integer
|
|
return self::NULL;
|
|
}
|
|
// interpret the value as a float
|
|
$float = filter_var($value, \FILTER_VALIDATE_FLOAT);
|
|
if ($float !== false) {
|
|
if (!fmod($float, 1)) {
|
|
// an integral float is acceptable
|
|
$value = (int) (!strpos($value, "e") ? $value : $float);
|
|
} else {
|
|
$out += self::FLOAT;
|
|
$value = $float;
|
|
}
|
|
} else {
|
|
return $out;
|
|
}
|
|
} elseif (is_float($value)) {
|
|
if (!fmod($value, 1)) {
|
|
// an integral float is acceptable
|
|
$value = (int) $value;
|
|
} else {
|
|
$out += self::FLOAT;
|
|
}
|
|
} elseif (!is_int($value)) {
|
|
// if the value is not an integer or integral float, stop
|
|
return $out;
|
|
}
|
|
// mark validity
|
|
if (is_int($value)) {
|
|
$out += self::VALID;
|
|
}
|
|
// mark zeroness
|
|
if (!$value) {
|
|
$out += self::ZERO;
|
|
}
|
|
// mark negativeness
|
|
if ($value < 0) {
|
|
$out += self::NEG;
|
|
}
|
|
return $out;
|
|
}
|
|
|
|
public static function str($value): int {
|
|
$out = 0;
|
|
// check if the input is null
|
|
if (is_null($value)) {
|
|
$out += self::NULL;
|
|
}
|
|
if (is_object($value) && method_exists($value, "__toString")) {
|
|
// if the value is an object which has a __toString method, this is acceptable
|
|
$value = (string) $value;
|
|
} elseif (!is_scalar($value) || is_bool($value) || (is_float($value) && !is_finite($value))) {
|
|
// otherwise if the value is not scalar, is a boolean, or is infinity or NaN, it cannot be valid
|
|
return $out;
|
|
}
|
|
// mark validity
|
|
$out += self::VALID;
|
|
if (!strlen((string) $value)) {
|
|
// mark emptiness
|
|
$out += self::EMPTY;
|
|
} elseif (!strlen(trim((string) $value))) {
|
|
// mark whitespacedness
|
|
$out += self::WHITE;
|
|
}
|
|
return $out;
|
|
}
|
|
|
|
public static function id($value, bool $allowNull = false): bool {
|
|
$info = self::int($value);
|
|
if ($allowNull && ($info & self::NULL)) { // null (and allowed)
|
|
return true;
|
|
} elseif (!($info & self::VALID)) { // not an integer
|
|
return false;
|
|
} elseif ($info & self::NEG) { // negative integer
|
|
return false;
|
|
} elseif (!$allowNull && ($info & self::ZERO)) { // zero (and not allowed)
|
|
return false;
|
|
} else { // non-negative integer
|
|
return true;
|
|
}
|
|
}
|
|
|
|
public static function bool($value, bool $default = null) {
|
|
if (is_null($value) || ValueInfo::str($value) & ValueInfo::WHITE) {
|
|
return $default;
|
|
}
|
|
$out = filter_var($value, \FILTER_VALIDATE_BOOLEAN, \FILTER_NULL_ON_FAILURE);
|
|
if (is_null($out) && (ValueInfo::int($value) & ValueInfo::VALID)) {
|
|
$out = (int) filter_var($value, \FILTER_VALIDATE_FLOAT);
|
|
return ($out==1 || $out==0) ? (bool) $out : $default;
|
|
}
|
|
return !is_null($out) ? $out : $default;
|
|
}
|
|
}
|