Calculator
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Currencies
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Exception
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Exchange
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Formatter
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PHPUnit
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Parser
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Calculator.php
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Converter.php
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Currencies.php
4 years ago
Currency.php
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CurrencyPair.php
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Exception.php
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Exchange.php
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Money.php
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MoneyFactory.php
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MoneyFormatter.php
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MoneyParser.php
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Number.php
4 years ago
Number.php
338 lines
| 1 | <?php |
| 2 | |
| 3 | namespace Money; |
| 4 | |
| 5 | /** |
| 6 | * Represents a numeric value. |
| 7 | * |
| 8 | * @author Frederik Bosch <f.bosch@genkgo.nl> |
| 9 | */ |
| 10 | final class Number |
| 11 | { |
| 12 | /** |
| 13 | * @var string |
| 14 | */ |
| 15 | private $integerPart; |
| 16 | |
| 17 | /** |
| 18 | * @var string |
| 19 | */ |
| 20 | private $fractionalPart; |
| 21 | |
| 22 | /** |
| 23 | * @var array |
| 24 | */ |
| 25 | private static $numbers = [0 => 1, 1 => 1, 2 => 1, 3 => 1, 4 => 1, 5 => 1, 6 => 1, 7 => 1, 8 => 1, 9 => 1]; |
| 26 | |
| 27 | /** |
| 28 | * @param string $integerPart |
| 29 | * @param string $fractionalPart |
| 30 | */ |
| 31 | public function __construct($integerPart, $fractionalPart = '') |
| 32 | { |
| 33 | if ('' === $integerPart && '' === $fractionalPart) { |
| 34 | throw new \InvalidArgumentException('Empty number is invalid'); |
| 35 | } |
| 36 | |
| 37 | $this->integerPart = $this->parseIntegerPart((string) $integerPart); |
| 38 | $this->fractionalPart = $this->parseFractionalPart((string) $fractionalPart); |
| 39 | } |
| 40 | |
| 41 | /** |
| 42 | * @param $number |
| 43 | * |
| 44 | * @return self |
| 45 | */ |
| 46 | public static function fromString($number) |
| 47 | { |
| 48 | $decimalSeparatorPosition = strpos($number, '.'); |
| 49 | if ($decimalSeparatorPosition === false) { |
| 50 | return new self($number, ''); |
| 51 | } |
| 52 | |
| 53 | return new self( |
| 54 | substr($number, 0, $decimalSeparatorPosition), |
| 55 | rtrim(substr($number, $decimalSeparatorPosition + 1), '0') |
| 56 | ); |
| 57 | } |
| 58 | |
| 59 | /** |
| 60 | * @param float $number |
| 61 | * |
| 62 | * @return self |
| 63 | */ |
| 64 | public static function fromFloat($number) |
| 65 | { |
| 66 | if (is_float($number) === false) { |
| 67 | throw new \InvalidArgumentException('Floating point value expected'); |
| 68 | } |
| 69 | |
| 70 | return self::fromString(sprintf('%.14F', $number)); |
| 71 | } |
| 72 | |
| 73 | /** |
| 74 | * @param float|int|string $number |
| 75 | * |
| 76 | * @return self |
| 77 | */ |
| 78 | public static function fromNumber($number) |
| 79 | { |
| 80 | if (is_float($number)) { |
| 81 | return self::fromString(sprintf('%.14F', $number)); |
| 82 | } |
| 83 | |
| 84 | if (is_int($number)) { |
| 85 | return new self($number); |
| 86 | } |
| 87 | |
| 88 | if (is_string($number)) { |
| 89 | return self::fromString($number); |
| 90 | } |
| 91 | |
| 92 | throw new \InvalidArgumentException('Valid numeric value expected'); |
| 93 | } |
| 94 | |
| 95 | /** |
| 96 | * @return bool |
| 97 | */ |
| 98 | public function isDecimal() |
| 99 | { |
| 100 | return $this->fractionalPart !== ''; |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * @return bool |
| 105 | */ |
| 106 | public function isInteger() |
| 107 | { |
| 108 | return $this->fractionalPart === ''; |
| 109 | } |
| 110 | |
| 111 | /** |
| 112 | * @return bool |
| 113 | */ |
| 114 | public function isHalf() |
| 115 | { |
| 116 | return $this->fractionalPart === '5'; |
| 117 | } |
| 118 | |
| 119 | /** |
| 120 | * @return bool |
| 121 | */ |
| 122 | public function isCurrentEven() |
| 123 | { |
| 124 | $lastIntegerPartNumber = $this->integerPart[strlen($this->integerPart) - 1]; |
| 125 | |
| 126 | return $lastIntegerPartNumber % 2 === 0; |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * @return bool |
| 131 | */ |
| 132 | public function isCloserToNext() |
| 133 | { |
| 134 | if ($this->fractionalPart === '') { |
| 135 | return false; |
| 136 | } |
| 137 | |
| 138 | return $this->fractionalPart[0] >= 5; |
| 139 | } |
| 140 | |
| 141 | /** |
| 142 | * @return string |
| 143 | */ |
| 144 | public function __toString() |
| 145 | { |
| 146 | if ($this->fractionalPart === '') { |
| 147 | return $this->integerPart; |
| 148 | } |
| 149 | |
| 150 | return $this->integerPart.'.'.$this->fractionalPart; |
| 151 | } |
| 152 | |
| 153 | /** |
| 154 | * @return bool |
| 155 | */ |
| 156 | public function isNegative() |
| 157 | { |
| 158 | return $this->integerPart[0] === '-'; |
| 159 | } |
| 160 | |
| 161 | /** |
| 162 | * @return string |
| 163 | */ |
| 164 | public function getIntegerPart() |
| 165 | { |
| 166 | return $this->integerPart; |
| 167 | } |
| 168 | |
| 169 | /** |
| 170 | * @return string |
| 171 | */ |
| 172 | public function getFractionalPart() |
| 173 | { |
| 174 | return $this->fractionalPart; |
| 175 | } |
| 176 | |
| 177 | /** |
| 178 | * @return string |
| 179 | */ |
| 180 | public function getIntegerRoundingMultiplier() |
| 181 | { |
| 182 | if ($this->integerPart[0] === '-') { |
| 183 | return '-1'; |
| 184 | } |
| 185 | |
| 186 | return '1'; |
| 187 | } |
| 188 | |
| 189 | /** |
| 190 | * @param int $number |
| 191 | * |
| 192 | * @return self |
| 193 | */ |
| 194 | public function base10($number) |
| 195 | { |
| 196 | if (!is_int($number)) { |
| 197 | throw new \InvalidArgumentException('Expecting integer'); |
| 198 | } |
| 199 | |
| 200 | if ($this->integerPart === '0' && !$this->fractionalPart) { |
| 201 | return $this; |
| 202 | } |
| 203 | |
| 204 | $sign = ''; |
| 205 | $integerPart = $this->integerPart; |
| 206 | |
| 207 | if ($integerPart[0] === '-') { |
| 208 | $sign = '-'; |
| 209 | $integerPart = substr($integerPart, 1); |
| 210 | } |
| 211 | |
| 212 | if ($number >= 0) { |
| 213 | $integerPart = ltrim($integerPart, '0'); |
| 214 | $lengthIntegerPart = strlen($integerPart); |
| 215 | $integers = $lengthIntegerPart - min($number, $lengthIntegerPart); |
| 216 | $zeroPad = $number - min($number, $lengthIntegerPart); |
| 217 | |
| 218 | return new self( |
| 219 | $sign.substr($integerPart, 0, $integers), |
| 220 | rtrim(str_pad('', $zeroPad, '0').substr($integerPart, $integers).$this->fractionalPart, '0') |
| 221 | ); |
| 222 | } |
| 223 | |
| 224 | $number = abs($number); |
| 225 | $lengthFractionalPart = strlen($this->fractionalPart); |
| 226 | $fractions = $lengthFractionalPart - min($number, $lengthFractionalPart); |
| 227 | $zeroPad = $number - min($number, $lengthFractionalPart); |
| 228 | |
| 229 | return new self( |
| 230 | $sign.ltrim($integerPart.substr($this->fractionalPart, 0, $lengthFractionalPart - $fractions).str_pad('', $zeroPad, '0'), '0'), |
| 231 | substr($this->fractionalPart, $lengthFractionalPart - $fractions) |
| 232 | ); |
| 233 | } |
| 234 | |
| 235 | /** |
| 236 | * @param string $number |
| 237 | * |
| 238 | * @return string |
| 239 | */ |
| 240 | private static function parseIntegerPart($number) |
| 241 | { |
| 242 | if ('' === $number || '0' === $number) { |
| 243 | return '0'; |
| 244 | } |
| 245 | |
| 246 | if ('-' === $number) { |
| 247 | return '-0'; |
| 248 | } |
| 249 | |
| 250 | $nonZero = false; |
| 251 | |
| 252 | for ($position = 0, $characters = strlen($number); $position < $characters; ++$position) { |
| 253 | $digit = $number[$position]; |
| 254 | |
| 255 | if (!isset(static::$numbers[$digit]) && !(0 === $position && '-' === $digit)) { |
| 256 | throw new \InvalidArgumentException( |
| 257 | sprintf('Invalid integer part %1$s. Invalid digit %2$s found', $number, $digit) |
| 258 | ); |
| 259 | } |
| 260 | |
| 261 | if (false === $nonZero && '0' === $digit) { |
| 262 | throw new \InvalidArgumentException( |
| 263 | 'Leading zeros are not allowed' |
| 264 | ); |
| 265 | } |
| 266 | |
| 267 | $nonZero = true; |
| 268 | } |
| 269 | |
| 270 | return $number; |
| 271 | } |
| 272 | |
| 273 | /** |
| 274 | * @param string $number |
| 275 | * |
| 276 | * @return string |
| 277 | */ |
| 278 | private static function parseFractionalPart($number) |
| 279 | { |
| 280 | if ('' === $number) { |
| 281 | return $number; |
| 282 | } |
| 283 | |
| 284 | for ($position = 0, $characters = strlen($number); $position < $characters; ++$position) { |
| 285 | $digit = $number[$position]; |
| 286 | if (!isset(static::$numbers[$digit])) { |
| 287 | throw new \InvalidArgumentException( |
| 288 | sprintf('Invalid fractional part %1$s. Invalid digit %2$s found', $number, $digit) |
| 289 | ); |
| 290 | } |
| 291 | } |
| 292 | |
| 293 | return $number; |
| 294 | } |
| 295 | |
| 296 | /** |
| 297 | * @param string $moneyValue |
| 298 | * @param int $targetDigits |
| 299 | * @param int $havingDigits |
| 300 | * |
| 301 | * @return string |
| 302 | */ |
| 303 | public static function roundMoneyValue($moneyValue, $targetDigits, $havingDigits) |
| 304 | { |
| 305 | $valueLength = strlen($moneyValue); |
| 306 | $shouldRound = $targetDigits < $havingDigits && $valueLength - $havingDigits + $targetDigits > 0; |
| 307 | |
| 308 | if ($shouldRound && $moneyValue[$valueLength - $havingDigits + $targetDigits] >= 5) { |
| 309 | $position = $valueLength - $havingDigits + $targetDigits; |
| 310 | $addend = 1; |
| 311 | |
| 312 | while ($position > 0) { |
| 313 | $newValue = (string) ((int) $moneyValue[$position - 1] + $addend); |
| 314 | |
| 315 | if ($newValue >= 10) { |
| 316 | $moneyValue[$position - 1] = $newValue[1]; |
| 317 | $addend = $newValue[0]; |
| 318 | --$position; |
| 319 | if ($position === 0) { |
| 320 | $moneyValue = $addend.$moneyValue; |
| 321 | } |
| 322 | } else { |
| 323 | if ($moneyValue[$position - 1] === '-') { |
| 324 | $moneyValue[$position - 1] = $newValue[0]; |
| 325 | $moneyValue = '-'.$moneyValue; |
| 326 | } else { |
| 327 | $moneyValue[$position - 1] = $newValue[0]; |
| 328 | } |
| 329 | |
| 330 | break; |
| 331 | } |
| 332 | } |
| 333 | } |
| 334 | |
| 335 | return $moneyValue; |
| 336 | } |
| 337 | } |
| 338 |