NumberFormatter.php — Matomo Analytics – Powerful, Privacy-First Insights for WordPress 5.1.4

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NumberFormatter.php

267 lines

1	<?php
2
3	/**
4	* Matomo - free/libre analytics platform
5	*
6	* @link https://matomo.org
7	* @license https://www.gnu.org/licenses/gpl-3.0.html GPL v3 or later
8	*/
9	namespace Piwik;
10
11	use Piwik\Container\StaticContainer;
12	use Piwik\Translation\Translator;
13	/**
14	* Class NumberFormatter
15	*
16	* Used to format numbers according to current language
17	*/
18	class NumberFormatter
19	{
20	/** @var Translator */
21	protected $translator;
22	/** @var array cached patterns per language */
23	protected $patterns;
24	/** @var array cached symbols per language */
25	protected $symbols;
26	/**
27	* Loads all required data from Intl plugin
28	*
29	* TODO: instead of going directly through Translator, there should be a specific class
30	* that gets needed characters (ie, NumberFormatSource). The default implementation
31	* can use the Translator. This will make it easier to unit test NumberFormatter,
32	* w/o needing the Piwik Environment.
33	*
34	* @return NumberFormatter
35	*/
36	public function __construct(Translator $translator)
37	{
38	$this->translator = $translator;
39	}
40	/**
41	* Parses the given pattern and returns patterns for positive and negative numbers
42	*
43	* @param string $pattern
44	* @return array
45	*/
46	protected function parsePattern($pattern)
47	{
48	$patterns = explode(';', $pattern);
49	if (!isset($patterns[1])) {
50	// No explicit negative pattern was provided, construct it.
51	$patterns[1] = '-' . $patterns[0];
52	}
53	return $patterns;
54	}
55	/**
56	* Formats a given number or percent value (if $value starts or ends with a %)
57	*
58	* @param string\|int\|float $value
59	* @param int $maximumFractionDigits
60	* @param int $minimumFractionDigits
61	* @return mixed\|string
62	*/
63	public function format($value, $maximumFractionDigits = 0, $minimumFractionDigits = 0)
64	{
65	if (is_string($value) && trim($value, '%') != $value) {
66	return $this->formatPercent($value, $maximumFractionDigits, $minimumFractionDigits);
67	}
68	return $this->formatNumber($value, $maximumFractionDigits, $minimumFractionDigits);
69	}
70	/**
71	* Formats a given number
72	*
73	* @see \Piwik\NumberFormatter::format()
74	*
75	* @param string\|int\|float $value
76	* @param int $maximumFractionDigits
77	* @param int $minimumFractionDigits
78	* @return mixed\|string
79	*/
80	public function formatNumber($value, $maximumFractionDigits = 0, $minimumFractionDigits = 0)
81	{
82	$pattern = $this->getPattern($value, 'Intl_NumberFormatNumber');
83	return $this->formatNumberWithPattern($pattern, $value, $maximumFractionDigits, $minimumFractionDigits);
84	}
85	/**
86	* Formats given number as percent value
87	* @param string\|int\|float $value
88	* @param int $maximumFractionDigits
89	* @param int $minimumFractionDigits
90	* @return mixed\|string
91	*/
92	public function formatPercent($value, $maximumFractionDigits = 0, $minimumFractionDigits = 0)
93	{
94	$newValue = trim($value, " \x00\v%");
95	if (!is_numeric($newValue)) {
96	return $value;
97	}
98	$pattern = $this->getPattern($value, 'Intl_NumberFormatPercent');
99	return $this->formatNumberWithPattern($pattern, $newValue, $maximumFractionDigits, $minimumFractionDigits);
100	}
101	/**
102	* Formats given number as percent value, but keep the leading + sign if found
103	*
104	* @param $value
105	* @return string
106	*/
107	public function formatPercentEvolution($value)
108	{
109	$isPositiveEvolution = !empty($value) && ($value > 0 \|\| substr($value, 0, 1) === '+');
110	$formatted = self::formatPercent($value);
111	if ($isPositiveEvolution) {
112	// $this->symbols has already been initialized from formatPercent().
113	$language = $this->translator->getCurrentLanguage();
114	return $this->symbols[$language]['+'] . $formatted;
115	}
116	return $formatted;
117	}
118	/**
119	* Formats given number as percent value
120	* @param string\|int\|float $value
121	* @param string $currency
122	* @param int $precision
123	* @return mixed\|string
124	*/
125	public function formatCurrency($value, $currency, $precision = 2)
126	{
127	$newValue = trim(strval($value), " \x00\v{$currency}");
128	if (!is_numeric($newValue)) {
129	return $value;
130	}
131	$pattern = $this->getPattern($value, 'Intl_NumberFormatCurrency');
132	if ($newValue == round($newValue)) {
133	// if no fraction digits available, don't show any
134	$value = $this->formatNumberWithPattern($pattern, $newValue, 0, 0);
135	} else {
136	// show given count of fraction digits otherwise
137	$value = $this->formatNumberWithPattern($pattern, $newValue, $precision, $precision);
138	}
139	return str_replace('¤', $currency, $value);
140	}
141	/**
142	* Returns the relevant pattern for the given number.
143	*
144	* @param string $value
145	* @param string $translationId
146	* @return string
147	*/
148	protected function getPattern($value, $translationId)
149	{
150	$language = $this->translator->getCurrentLanguage();
151	if (!isset($this->patterns[$language][$translationId])) {
152	$this->patterns[$language][$translationId] = $this->parsePattern($this->translator->translate($translationId));
153	}
154	list($positivePattern, $negativePattern) = $this->patterns[$language][$translationId];
155	$negative = $this->isNegative($value);
156	return $negative ? $negativePattern : $positivePattern;
157	}
158	/**
159	* Formats the given number with the given pattern
160	*
161	* @param string $pattern
162	* @param string\|int\|float $value
163	* @param int $maximumFractionDigits
164	* @param int $minimumFractionDigits
165	* @return mixed\|string
166	*/
167	protected function formatNumberWithPattern($pattern, $value, $maximumFractionDigits = 0, $minimumFractionDigits = 0)
168	{
169	if (!is_numeric($value)) {
170	return $value;
171	}
172	$usesGrouping = strpos($pattern, ',') !== false;
173	// if pattern has number groups, parse them.
174	if ($usesGrouping) {
175	preg_match('/#+0/', $pattern, $primaryGroupMatches);
176	$primaryGroupSize = $secondaryGroupSize = strlen($primaryGroupMatches[0]);
177	$numberGroups = explode(',', $pattern);
178	// check for distinct secondary group size.
179	if (count($numberGroups) > 2) {
180	$secondaryGroupSize = strlen($numberGroups[1]);
181	}
182	}
183	// Ensure that the value is positive and has the right number of digits.
184	$negative = $this->isNegative($value);
185	$signMultiplier = $negative ? '-1' : '1';
186	$value = $value / $signMultiplier;
187	$value = round($value, $maximumFractionDigits);
188	// Split the number into major and minor digits.
189	$valueParts = explode('.', $value);
190	$majorDigits = $valueParts[0];
191	// Account for maximumFractionDigits = 0, where the number won't
192	// have a decimal point, and $valueParts[1] won't be set.
193	$minorDigits = isset($valueParts[1]) ? $valueParts[1] : '';
194	if ($usesGrouping) {
195	// Reverse the major digits, since they are grouped from the right.
196	$majorDigits = array_reverse(str_split($majorDigits));
197	// Group the major digits.
198	$groups = array();
199	$groups[] = array_splice($majorDigits, 0, $primaryGroupSize);
200	while (!empty($majorDigits)) {
201	$groups[] = array_splice($majorDigits, 0, $secondaryGroupSize);
202	}
203	// Reverse the groups and the digits inside of them.
204	$groups = array_reverse($groups);
205	foreach ($groups as &$group) {
206	$group = implode(array_reverse($group));
207	}
208	// Reconstruct the major digits.
209	$majorDigits = implode(',', $groups);
210	}
211	if ($minimumFractionDigits <= $maximumFractionDigits) {
212	// Strip any trailing zeroes.
213	$minorDigits = rtrim($minorDigits, '0');
214	if (strlen($minorDigits) < $minimumFractionDigits) {
215	// Now there are too few digits, re-add trailing zeroes
216	// until the desired length is reached.
217	$neededZeroes = $minimumFractionDigits - strlen($minorDigits);
218	$minorDigits .= str_repeat('0', $neededZeroes);
219	}
220	}
221	// Assemble the final number and insert it into the pattern.
222	$value = strlen($minorDigits) ? $majorDigits . '.' . $minorDigits : $majorDigits;
223	$value = preg_replace('/#(?:[\\.,]#+)0(?:[,\\.][0#]+)/', $value, $pattern);
224	// Localize the number.
225	$value = $this->replaceSymbols($value);
226	return $value;
227	}
228	/**
229	* Replaces number symbols with their localized equivalents.
230	*
231	* @param string $value The value being formatted.
232	*
233	* @return string
234	*
235	* @see http://cldr.unicode.org/translation/number-symbols
236	*/
237	protected function replaceSymbols($value)
238	{
239	$language = $this->translator->getCurrentLanguage();
240	if (!isset($this->symbols[$language])) {
241	$this->symbols[$language] = array('.' => $this->translator->translate('Intl_NumberSymbolDecimal'), ',' => $this->translator->translate('Intl_NumberSymbolGroup'), '+' => $this->translator->translate('Intl_NumberSymbolPlus'), '-' => $this->translator->translate('Intl_NumberSymbolMinus'), '%' => $this->translator->translate('Intl_NumberSymbolPercent'));
242	}
243	return strtr($value, $this->symbols[$language]);
244	}
245	/**
246	* @param $value
247	* @return bool
248	*/
249	protected function isNegative($value)
250	{
251	return $value < 0;
252	}
253	/**
254	* @deprecated
255	* @return self
256	*/
257	public static function getInstance()
258	{
259	return StaticContainer::get(\Piwik\NumberFormatter::class);
260	}
261	public function clearCache()
262	{
263	$this->patterns = [];
264	$this->symbols = [];
265	}
266	}
267