/usr/share/php/Horde/Date/Parser/Locale/Base.php is in php-horde-date-parser 2.0.6-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/**
*/
class Horde_Date_Parser_Locale_Base
{
public $definitions = array();
public $args = array();
public $now;
public function __construct($args)
{
$this->args = $args;
}
/**
# Parses a string containing a natural language date or time. If the parser
# can find a date or time, either a Horde_Date or Horde_Date_Span will be returned
# (depending on the value of <tt>:return</tt>). If no date or time can be found,
# +nil+ will be returned.
#
# Options are:
#
# [<tt>:context</tt>]
# <tt>:past</tt> or <tt>:future</tt> (defaults to <tt>:future</tt>)
#
# If your string represents a birthday, you can set <tt>:context</tt> to <tt>:past</tt>
# and if an ambiguous string is given, it will assume it is in the
# past. Specify <tt>:future</tt> or omit to set a future context.
#
# [<tt>:now</tt>]
# Time (defaults to time())
#
# By setting <tt>:now</tt> to a Horde_Date, all computations will be based off
# of that time instead of time().
#
# [<tt>:return</tt>]
# 'result', 'span', or 'date' (defaults to 'date')
#
# By default, the parser will guess a single point in time for the
# given date or time. If you'd rather have the entire time span returned,
# set <tt>:return</tt> to 'span' and a Horde_Date_Span will be returned.
# If you want the entire result, including tokens (for retrieving the text
# that was or was not tagged, for example), set <tt>:return</tt> to 'result'
# and you will get a result object.
#
# [<tt>:ambiguousTimeRange</tt>]
# Integer or <tt>:none</tt> (defaults to <tt>6</tt> (6am-6pm))
#
# If an Integer is given, ambiguous times (like 5:00) will be
# assumed to be within the range of that time in the AM to that time
# in the PM. For example, if you set it to <tt>7</tt>, then the parser will
# look for the time between 7am and 7pm. In the case of 5:00, it would
# assume that means 5:00pm. If <tt>:none</tt> is given, no assumption
# will be made, and the first matching instance of that time will
# be used.
*/
public function parse($text, $specifiedOptions = array())
{
// get options and set defaults if necessary
$defaultOptions = array(
'context' => 'future',
'now' => new Horde_Date(time()),
'return' => 'date',
'ambiguousTimeRange' => 6,
);
$options = array_merge($defaultOptions, $this->args, $specifiedOptions);
// ensure the specified options are valid
foreach (array_keys($specifiedOptions) as $key) {
if (!isset($defaultOptions[$key])) {
throw new InvalidArgumentException("$key is not a valid option key");
}
}
if (!in_array($options['context'], array('past', 'future', 'none'))) {
throw new InvalidArgumentException("Invalid value " . $options['context'] . " for 'context' specified. Valid values are 'past', 'future', and 'none'");
}
// store now for later =)
$this->now = $options['now'];
// put the text into a normal format to ease scanning
$text = $this->preNormalize($text);
// get base tokens for each word
$tokens = $this->preTokenize($text);
// scan the tokens with each token scanner
foreach (array('Repeater') as $tokenizer) {
$tokenizer = $this->componentFactory($tokenizer);
$tokens = $tokenizer->scan($tokens, $options);
}
foreach (array('Grabber', 'Pointer', 'Scalar', 'Ordinal', 'Separator', 'Timezone') as $tokenizer) {
$tokenizer = $this->componentFactory($tokenizer);
$tokens = $tokenizer->scan($tokens);
}
// strip any non-tagged tokens
$taggedTokens = array_values(array_filter($tokens, create_function('$t', 'return $t->tagged();')));
// Remove tokens we know we don't want - for example, if the first token
// is a separator, drop it.
$taggedTokens = $this->postTokenize($taggedTokens);
// do the heavy lifting
$span = $this->tokensToSpan($taggedTokens, $options);
// generate the result and return it, the span, or a guessed time within the span
$result = new Horde_Date_Parser_Result($span, $tokens);
switch ($options['return']) {
case 'result':
return $result;
case 'span':
return $result->span;
case 'date':
return $result->guess();
}
}
public function componentFactory($component, $args = null)
{
$locale = isset($this->args['locale']) ? $this->args['locale'] : null;
if ($locale && Horde_String::lower($locale) != 'base') {
$locale = str_replace(' ', '_', Horde_String::ucwords(str_replace('_', ' ', Horde_String::lower($locale))));
$class = 'Horde_Date_Parser_Locale_' . $locale . '_' . $component;
if (class_exists($class)) {
return new $class($args);
}
$language = array_shift(explode('_', $locale));
if ($language != $locale) {
$class = 'Horde_Date_Parser_Locale_' . $language . '_' . $component;
if (class_exists($class)) {
return new $class($args);
}
}
}
$class = 'Horde_Date_Parser_Locale_Base_' . $component;
return new $class($args);
}
/**
# Clean up the specified input text by stripping unwanted characters,
# converting idioms to their canonical form, converting number words
# to numbers (three => 3), and converting ordinal words to numeric
# ordinals (third => 3rd)
*/
public function preNormalize($text)
{
$text = $this->numericizeNumbers($text);
$text = preg_replace('/[\'"\.]/', '', $text);
$text = preg_replace('/([\/\-\,\@])/', ' \1 ', $text);
$text = preg_replace('/\btoday\b/i', 'this day', $text);
$text = preg_replace('/\btomm?orr?ow\b/i', 'next day', $text);
$text = preg_replace('/\byesterday\b/i', 'last day', $text);
$text = preg_replace('/\bnoon\b/i', '12:00', $text);
$text = preg_replace('/\bmidnight\b/i', '24:00', $text);
$text = preg_replace('/\bbefore now\b/i', 'past', $text);
$text = preg_replace('/\bnow\b/i', 'this second', $text);
$text = preg_replace('/\b(ago|before)\b/i', 'past', $text);
$text = preg_replace('/\bthis past\b/i', 'last', $text);
$text = preg_replace('/\bthis last\b/i', 'last', $text);
$text = preg_replace('/\b(?:in|during) the (morning)\b/i', '\1', $text);
$text = preg_replace('/\b(?:in the|during the|at) (afternoon|evening|night)\b/i', '\1', $text);
$text = preg_replace('/\btonight\b/i', 'this night', $text);
$text = preg_replace('/((?=\w)\d+)([ap]m|oclock)\b/i', '$1 $2', $text);
$text = preg_replace('/\b(hence|after|from)\b/i', 'future', $text);
$text = $this->numericizeOrdinals($text);
return $text;
}
/**
* Convert number words to numbers (three => 3)
*/
public function numericizeNumbers($text)
{
return Horde_Support_Numerizer::numerize($text, $this->args);
}
/**
* Convert ordinal words to numeric ordinals (third => 3rd)
*/
public function numericizeOrdinals($text)
{
return $text;
}
/**
* Split the text on spaces and convert each word into a Token.
*
* @param string $text Text to tokenize
*
* @return array Array of Horde_Date_Parser_Tokens.
*/
public function preTokenize($text)
{
return array_map(create_function('$w', 'return new Horde_Date_Parser_Token($w);'), preg_split('/\s+/', $text));
}
/**
* Remove tokens that don't fit our definitions.
*
* @param array $tokens Array of tagged tokens.
*
* @return array Filtered tagged tokens.
*/
public function postTokenize($tokens)
{
if (!count($tokens)) {
return $tokens;
}
// First rule: if the first token is a separator, remove it from the
// list of tokens we consider in tokensToSpan().
$first = clone($tokens[0]);
$first->untag('separator_at');
$first->untag('separator_comma');
$first->untag('separator_in');
$first->untag('separator_slash_or_dash');
if (!$first->tagged()) {
array_shift($tokens);
}
// Second rule: if the last token is a separator, remove it from the
// list of tokens we consider in tokensToSpan().
$last = clone($tokens[count($tokens) - 1]);
$last->untag('separator_at');
$last->untag('separator_comma');
$last->untag('separator_in');
$last->untag('separator_slash_or_dash');
if (!$last->tagged()) {
array_pop($tokens);
}
return $tokens;
}
public function initDefinitions()
{
if ($this->definitions) {
return;
}
$this->definitions = array(
'time' => array(
new Horde_Date_Parser_Handler(array(':repeater_time', ':repeater_day_portion?'), null),
),
'date' => array(
new Horde_Date_Parser_Handler(array(':repeater_day_name', ':repeater_month_name', ':scalar_day', ':repeater_time', ':timezone', ':scalar_year'), 'handle_rdn_rmn_sd_t_tz_sy'),
new Horde_Date_Parser_Handler(array(':repeater_month_name', ':scalar_day', ':scalar_year'), 'handle_rmn_sd_sy'),
new Horde_Date_Parser_Handler(array(':repeater_month_name', ':scalar_day', ':scalar_year', ':separator_at?', 'time?'), 'handle_rmn_sd_sy'),
new Horde_Date_Parser_Handler(array(':repeater_month_name', ':scalar_day', ':separator_at?', 'time?'), 'handle_rmn_sd'),
new Horde_Date_Parser_Handler(array(':repeater_month_name', ':ordinal_day', ':separator_at?', 'time?'), 'handle_rmn_od'),
new Horde_Date_Parser_Handler(array(':repeater_month_name', ':scalar_year'), 'handle_rmn_sy'),
new Horde_Date_Parser_Handler(array(':scalar_day', ':repeater_month_name', ':scalar_year', ':separator_at?', 'time?'), 'handle_sd_rmn_sy'),
new Horde_Date_Parser_Handler(array(':scalar_month', ':separator_slash_or_dash', ':scalar_day', ':separator_slash_or_dash', ':scalar_year', ':separator_at?', 'time?'), 'handle_sm_sd_sy'),
new Horde_Date_Parser_Handler(array(':scalar_day', ':separator_slash_or_dash', ':scalar_month', ':separator_slash_or_dash', ':scalar_year', ':separator_at?', 'time?'), 'handle_sd_sm_sy'),
new Horde_Date_Parser_Handler(array(':scalar_year', ':separator_slash_or_dash', ':scalar_month', ':separator_slash_or_dash', ':scalar_day', ':separator_at?', 'time?'), 'handle_sy_sm_sd'),
new Horde_Date_Parser_Handler(array(':scalar_month', ':separator_slash_or_dash', ':scalar_year'), 'handle_sm_sy'),
),
// tonight at 7pm
'anchor' => array(
new Horde_Date_Parser_Handler(array(':grabber?', ':repeater', ':separator_at?', ':repeater?', ':repeater?'), 'handle_r'),
new Horde_Date_Parser_Handler(array(':grabber?', ':repeater', ':repeater', ':separator_at?', ':repeater?', ':repeater?'), 'handle_r'),
new Horde_Date_Parser_Handler(array(':repeater', ':grabber', ':repeater'), 'handle_r_g_r'),
),
// 3 weeks from now, in 2 months
'arrow' => array(
new Horde_Date_Parser_Handler(array(':scalar', ':repeater', ':pointer'), 'handle_s_r_p'),
new Horde_Date_Parser_Handler(array(':pointer', ':scalar', ':repeater'), 'handle_p_s_r'),
new Horde_Date_Parser_Handler(array(':scalar', ':repeater', ':pointer', 'anchor'), 'handle_s_r_p_a'),
),
// 3rd week in march
'narrow' => array(
new Horde_Date_Parser_Handler(array(':ordinal', ':repeater', ':separator_in', ':repeater'), 'handle_o_r_s_r'),
new Horde_Date_Parser_Handler(array(':ordinal', ':repeater', ':grabber', ':repeater'), 'handle_o_r_g_r'),
),
);
}
public function tokensToSpan($tokens, $options)
{
$this->initDefinitions();
// maybe it's a specific date
foreach ($this->definitions['date'] as $handler) {
if ($handler->match($tokens, $this->definitions)) {
$goodTokens = array_values(array_filter($tokens, create_function('$o', 'return !$o->getTag("separator");')));
$this->debug($handler->handlerMethod, $goodTokens, $options);
return call_user_func(array($this, $handler->handlerMethod), $goodTokens, $options);
}
}
// I guess it's not a specific date, maybe it's just an anchor
foreach ($this->definitions['anchor'] as $handler) {
if ($handler->match($tokens, $this->definitions)) {
$goodTokens = array_values(array_filter($tokens, create_function('$o', 'return !$o->getTag("separator");')));
$this->debug($handler->handlerMethod, $goodTokens, $options);
return call_user_func(array($this, $handler->handlerMethod), $goodTokens, $options);
}
}
// not an anchor, perhaps it's an arrow
foreach ($this->definitions['arrow'] as $handler) {
if ($handler->match($tokens, $this->definitions)) {
$goodTokens = array_values(array_filter($tokens, create_function('$o', 'return !$o->getTag("separator_at") && !$o->getTag("separator_slash_or_dash") && !$o->getTag("separator_comma");')));
$this->debug($handler->handlerMethod, $goodTokens, $options);
return call_user_func(array($this, $handler->handlerMethod), $goodTokens, $options);
}
}
// not an arrow, let's hope it's a narrow
foreach ($this->definitions['narrow'] as $handler) {
if ($handler->match($tokens, $this->definitions)) {
//good_tokens = tokens.select { |o| !o.get_tag Separator }
$this->debug($handler->handlerMethod, $tokens, $options);
return call_user_func(array($this, $handler->handlerMethod), $tokens, $options);
}
}
return null;
}
public function dayOrTime($dayStart, $timeTokens, $options)
{
$outerSpan = new Horde_Date_Span($dayStart, $dayStart->add(array('day' => 1)));
if (!empty($timeTokens)) {
$this->now = $outerSpan->begin;
return $this->getAnchor($this->dealiasAndDisambiguateTimes($timeTokens, $options), $options);
} else {
return $outerSpan;
}
}
public function handle_m_d($month, $day, $timeTokens, $options)
{
$month->now = $this->now;
$span = $month->this($options['context']);
$dayStart = new Horde_Date($span->begin->year, $span->begin->month, $day);
return $this->dayOrTime($dayStart, $timeTokens, $options);
}
public function handle_rmn_sd($tokens, $options)
{
return $this->handle_m_d($tokens[0]->getTag('repeater_month_name'), $tokens[1]->getTag('scalar_day'), array_slice($tokens, 2), $options);
}
public function handle_rmn_od($tokens, $options)
{
return $this->handle_m_d($tokens[0]->getTag('repeater_month_name'), $tokens[1]->getTag('ordinal_day'), array_slice($tokens, 2), $options);
}
public function handle_rmn_sy($tokens, $options)
{
$month = $tokens[0]->getTag('repeater_month_name')->index();
$year = $tokens[1]->getTag('scalar_year');
try {
return new Horde_Date_Span(new Horde_Date($year, $month, 1), new Horde_Date($year, $month + 1, 1));
} catch (Exception $e) {
return null;
}
}
public function handle_rdn_rmn_sd_t_tz_sy($tokens, $options)
{
$month = $tokens[1]->getTag('repeater_month_name')->index();
$day = $tokens[2]->getTag('scalar_day');
$year = $tokens[5]->getTag('scalar_year');
try {
$dayStart = new Horde_Date($year, $month, $day);
return $this->dayOrTime($dayStart, array($tokens[3]), $options);
} catch (Exception $e) {
return null;
}
}
public function handle_rmn_sd_sy($tokens, $options)
{
$month = $tokens[0]->getTag('repeater_month_name')->index();
$day = $tokens[1]->getTag('scalar_day');
$year = $tokens[2]->getTag('scalar_year');
$timeTokens = array_slice($tokens, 3);
try {
$dayStart = new Horde_Date($year, $month, $day);
return $this->dayOrTime($dayStart, $timeTokens, $options);
} catch (Exception $e) {
return null;
}
}
public function handle_sd_rmn_sy($tokens, $options)
{
$newTokens = array($tokens[1], $tokens[0], $tokens[2]);
$timeTokens = array_slice($tokens, 3);
return $this->handle_rmn_sd_sy(array_merge($newTokens, $timeTokens), $options);
}
public function handle_sm_sd_sy($tokens, $options)
{
$month = $tokens[0]->getTag('scalar_month');
$day = $tokens[1]->getTag('scalar_day');
$year = $tokens[2]->getTag('scalar_year');
$timeTokens = array_slice($tokens, 3);
try {
$dayStart = new Horde_Date($year, $month, $day);
return $this->dayOrTime($dayStart, $timeTokens, $options);
} catch (Exception $e) {
return null;
}
}
public function handle_sd_sm_sy($tokens, $options)
{
$newTokens = array($tokens[1], $tokens[0], $tokens[2]);
$timeTokens = array_slice($tokens, 3);
return $this->handle_sm_sd_sy(array_merge($newTokens, $timeTokens), $options);
}
public function handle_sy_sm_sd($tokens, $options)
{
$newTokens = array($tokens[1], $tokens[2], $tokens[0]);
$timeTokens = array_slice($tokens, 3);
return $this->handle_sm_sd_sy(array_merge($newTokens, $timeTokens), $options);
}
public function handle_sm_sy($tokens, $options)
{
$month = $tokens[0]->getTag('scalar_month');
$year = $tokens[1]->getTag('scalar_year');
try {
return new Horde_Date_Span(new Horde_Date($year, $month, 1), new Horde_Date($year, $month + 1, 1));
} catch (Exception $e) {
return null;
}
}
/*##########################################################################
# Anchors
##########################################################################*/
public function handle_r($tokens, $options)
{
$ddTokens = $this->dealiasAndDisambiguateTimes($tokens, $options);
return $this->getAnchor($ddTokens, $options);
}
public function handle_r_g_r($tokens, $options)
{
$newTokens = array($tokens[1], $tokens[0], $tokens[2]);
return $this->handle_r($newTokens, $options);
}
/*##########################################################################
# Arrows
##########################################################################*/
public function handle_srp($tokens, $span, $options)
{
$distance = $tokens[0]->getTag('scalar');
$repeater = $tokens[1]->getTag('repeater');
$pointer = $tokens[2]->getTag('pointer');
return $repeater->offset($span, $distance, $pointer);
}
public function handle_s_r_p($tokens, $options)
{
$span = new Horde_Date_Span($this->now, $this->now->add(1));
return $this->handle_srp($tokens, $span, $options);
}
public function handle_p_s_r($tokens, $options)
{
$newTokens = array($tokens[1], $tokens[2], $tokens[0]);
return $this->handle_s_r_p($newTokens, $options);
}
public function handle_s_r_p_a($tokens, $options)
{
$anchorSpan = $this->getAnchor(array_slice($tokens, 3), $options);
return $this->handle_srp($tokens, $anchorSpan, $options);
}
/*##########################################################################
# Narrows
##########################################################################*/
public function handle_orr($tokens, $outerSpan, $options)
{
$repeater = $tokens[1]->getTag('repeater');
$repeater->now = $outerSpan->begin->sub(1);
$ordinal = $tokens[0]->getTag('ordinal');
$span = null;
for ($i = 0; $i < $ordinal; $i++) {
$span = $repeater->next('future');
if ($span->begin->after($outerSpan->end)) {
$span = null;
break;
}
}
return $span;
}
public function handle_o_r_s_r($tokens, $options)
{
$outerSpan = $this->getAnchor(array($tokens[3]), $options);
return $this->handle_orr(array($tokens[0], $tokens[1]), $outerSpan, $options);
}
public function handle_o_r_g_r($tokens, $options)
{
$outerSpan = $this->getAnchor(array($tokens[2], $tokens[3]), $options);
return $this->handle_orr(array($tokens[0], $tokens[1]), $outerSpan, $options);
}
/*##########################################################################
# Logging Methods
##########################################################################*/
public function debug($method, $args)
{
$args = func_get_args();
$method = array_shift($args);
// echo "$method\n";
}
/*##########################################################################
# Support Methods
##########################################################################*/
public function getAnchor($tokens, $options)
{
$grabber = 'this';
$pointer = 'future';
$repeaters = $this->getRepeaters($tokens);
for ($i = 0, $size = count($repeaters); $i < $size; $i++) {
array_pop($tokens);
}
if (count($tokens) && $tokens[0]->getTag('grabber')) {
$grabber = $tokens[0]->getTag('grabber');
array_pop($tokens);
}
$head = array_shift($repeaters);
$head->now = $this->now;
switch ($grabber) {
case 'last':
$outerSpan = $head->next('past');
break;
case 'this':
if (count($repeaters)) {
$outerSpan = $head->this('none');
} else {
$outerSpan = $head->this($options['context']);
}
break;
case 'next':
$outerSpan = $head->next('future');
break;
default:
throw new Horde_Date_Parser_Exception('Invalid grabber ' . $grabber);
}
return $this->findWithin($repeaters, $outerSpan, $pointer);
}
public function getRepeaters($tokens)
{
$repeaters = array();
foreach ($tokens as $token) {
if ($t = $token->getTag('repeater')) {
$repeaters[] = $t;
}
}
// Return repeaters in order from widest (years) to smallest (seconds)
usort($repeaters, create_function('$a, $b', 'return $b->width() > $a->width();'));
return $repeaters;
}
/**
* Recursively finds repeaters within other repeaters. Returns a Span
* representing the innermost time span or null if no repeater union could
* be found
*/
public function findWithin($tags, $span, $pointer)
{
if (empty($tags)) { return $span; }
$head = array_shift($tags);
$rest = $tags;
$head->now = ($pointer == 'future') ? $span->begin : $span->end;
$h = $head->this('none');
if ($span->includes($h->begin) || $span->includes($h->end)) {
return $this->findWithin($rest, $h, $pointer);
} else {
return null;
}
}
/**
* handle aliases of am/pm
* 5:00 in the morning -> 5:00 am
* 7:00 in the evening -> 7:00 pm
*/
public function dealiasAndDisambiguateTimes($tokens, $options)
{
$dayPortionIndex = null;
foreach ($tokens as $i => $t) {
if ($t->getTag('repeater_day_portion')) {
$dayPortionIndex = $i;
break;
}
}
$timeIndex = null;
foreach ($tokens as $i => $t) {
if ($t->getTag('repeater_time')) {
$timeIndex = $i;
break;
}
}
if ($dayPortionIndex !== null && $timeIndex !== null) {
$t1 = $tokens[$dayPortionIndex];
$t1tag = $t1->getTag('repeater_day_portion');
if ($t1tag->type == 'morning') {
$t1->untag('repeater_day_portion');
$t1->tag('repeater_day_portion', new Horde_Date_Repeater_DayPortion('am'));
} elseif (in_array($t1tag->type, array('afternoon', 'evening', 'night'))) {
$t1->untag('repeater_day_portion');
$t1->tag('repeater_day_portion', new Horde_Date_Repeater_DayPortion('pm'));
}
}
// handle ambiguous times if ambiguousTimeRange is specified
if (!isset($options['ambiguousTimeRange']) || $options['ambiguousTimeRange'] != 'none') {
$ttokens = array();
foreach ($tokens as $i => $t0) {
$ttokens[] = $t0;
$t1 = isset($tokens[$i + 1]) ? $tokens[$i + 1] : null;
if ($t0->getTag('repeater_time') && $t0->getTag('repeater_time')->ambiguous && (!$t1 || !$t1->getTag('repeater_day_portion'))) {
$distoken = new Horde_Date_Parser_Token('disambiguator');
$distoken->tag('repeater_day_portion', new Horde_Date_Repeater_DayPortion($options['ambiguousTimeRange']));
$ttokens[] = $distoken;
}
}
$tokens = $ttokens;
}
return $tokens;
}
}
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