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/*
* Copyright 2017-2022 John Snow Labs
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.johnsnowlabs.nlp.annotators
import com.johnsnowlabs.nlp.util.io.MatchStrategy
import com.johnsnowlabs.nlp.util.regex.RuleFactory
import org.apache.spark.ml.param._
import java.util.Calendar
import scala.util.matching.Regex
import scala.util.{Failure, Success, Try}
trait DateMatcherUtils extends Params {
protected val EMPTY_INIT_ARRAY = Array("")
protected val SPACE_CHAR = " "
/** Container of a parsed date with identified bounds
*
* @param calendar
* [[Calendar]] holding parsed date
* @param start
* start bound of detected match
* @param end
* end bound of detected match
*/
private[annotators] case class MatchedDateTime(calendar: Calendar, start: Int, end: Int)
/** Standard formal dates, e.g. 05/17/2014 or 17/05/2014 or 2014/05/17 */
private val formalDate = new Regex(
"\\b(0?[1-9]|1[012])[-/]([0-2]?[1-9]|[1-3][0-1])[-/](\\d{2,4})\\b",
"month",
"day",
"year")
private val formalDateAlt = new Regex(
"\\b([0-2]?[1-9]|[1-3][0-1])[-/](0?[1-9]|1[012])[-/](\\d{2,4})\\b",
"day",
"month",
"year")
private val formalDateAlt2 = new Regex(
"\\b(\\d{2,4})[-/](0?[1-9]|1[012])[-/]([0-2]?[1-9]|[1-3][0-1])\\b",
"year",
"month",
"day")
private val formalDateShort = new Regex("\\b(0?[1-9]|1[012])[-/](\\d{2,4})\\b", "month", "year")
protected val months = Seq(
"january",
"february",
"march",
"april",
"may",
"june",
"july",
"august",
"september",
"october",
"november",
"december")
protected val shortMonths =
Seq("jan", "feb", "mar", "apr", "may", "jun", "jul", "aug", "sep", "oct", "nov", "dec")
/** Relaxed dates, e.g. March 2nd */
private val relaxedDayNumbered = "\\b([0-2]?[1-9]|[1-3][0-1])(?:st|rd|nd|th)*\\b".r
private val relaxedMonths = "(?i)" + months
.zip(shortMonths)
.map(m => m._1 + "|" + m._2)
.mkString("|")
private val relaxedYear = "\\d{4}\\b|\\B'\\d{2}\\b".r
/** Used for past relative date matches */
val relativePastPattern = " ago"
val relativeFuturePattern = "in "
/** Relative dates, e.g. tomorrow */
private val relativeDate = "(?i)(next|last)\\s(week|month|year)".r
private val relativeDateFuture =
"(?i)(in)\\s+(\\d+)\\s+(second|seconds|minute|minutes|hour|hours|day|days|week|weeks|month|months|year|years)".r
private val relativeDatePast =
"(?i)(\\d+)\\s+(day|days|week|month|year|weeks|months|years)\\s+(ago)".r
private val relativeDay =
"(?i)(today|tomorrow|yesterday|past tomorrow|[^a-zA-Z0-9]day before yesterday|[^a-zA-Z0-9]day after tomorrow|[^a-zA-Z0-9]day before|[^a-zA-Z0-9]day after)".r
private val relativeExactDay = "(?i)(next|last|past)\\s(mon|tue|wed|thu|fri)".r
/** standard time representations e.g. 05:42:16 or 5am */
private val clockTime =
new Regex("(?i)([0-2][0-9]):([0-5][0-9])(?::([0-5][0-9]))?", "hour", "minutes", "seconds")
private val altTime =
new Regex("([0-2]?[0-9])\\.([0-5][0-9])\\.?([0-5][0-9])?", "hour", "minutes", "seconds")
private val coordTIme = new Regex(
"([0-2]?[0-9])([0-5][0-9])?\\.?([0-5][0-9])?\\s*(?:h|a\\.?m|p\\.?m)",
"hour",
"minutes",
"seconds")
private val refTime = new Regex("at\\s+([0-9])\\s*([0-5][0-9])*\\s*([0-5][0-9])*")
protected val amDefinition: Regex = "(?i)(a\\.?m)".r
protected val defaultMonthWhenMissing = 0
protected val defaultYearWhenMissing: Int = Calendar.getInstance.get(Calendar.YEAR)
/** Date Matcher regex patterns.
*
* @group param
*/
val inputFormats: StringArrayParam =
new StringArrayParam(this, "inputFormats", "Date Matcher inputFormats.")
/** @group getParam */
def getInputFormats: Array[String] = $(inputFormats)
/** @group setParam */
def setInputFormats(value: Array[String]): this.type = set(inputFormats, value)
/** Output format of parsed date (Default: `"yyyy/MM/dd"`)
*
* @group param
*/
val outputFormat: Param[String] =
new Param(this, "outputFormat", "Output format of parsed date")
/** @group getParam */
def getOutputFormat: String = $(outputFormat)
/** @group setParam */
def setOutputFormat(value: String): this.type = set(outputFormat, value)
/** Add an anchor year for the relative dates such as a day after tomorrow (Default: `-1`). If
* it is not set, the by default it will use the current year. Example: 2021
*
* @group param
*/
val anchorDateYear: Param[Int] = new IntParam(
this,
"anchorDateYear",
"Add an anchor year for the relative dates such as a day after tomorrow. If not set it will use the current year. Example: 2021")
/** @group setParam */
def setAnchorDateYear(value: Int): this.type = {
require(value <= 9999 || value >= 999, "The year must be between 999 and 9999")
set(anchorDateYear, value)
}
/** @group getParam */
def getAnchorDateYear: Int = $(anchorDateYear)
/** Add an anchor month for the relative dates such as a day after tomorrow (Default: `-1`). By
* default it will use the current month. Month values start from `1`, so `1` stands for
* January.
*
* @group param
*/
val anchorDateMonth: Param[Int] = new IntParam(
this,
"anchorDateMonth",
"Add an anchor month for the relative dates such as a day after tomorrow. If not set it will use the current month. Example: 1 which means January")
/** @group setParam */
def setAnchorDateMonth(value: Int): this.type = {
val normalizedMonth = value - 1
require(
normalizedMonth <= 11 || normalizedMonth >= 0,
"The month value is 1-based. e.g., 1 for January. The value must be between 1 and 12")
set(anchorDateMonth, normalizedMonth)
}
/** @group getParam */
def getAnchorDateMonth: Int = $(anchorDateMonth) + 1
/** Add an anchor day for the relative dates such as a day after tomorrow (Default: `-1`). By
* default it will use the current day. The first day of the month has value 1.
*
* @group param
*/
val anchorDateDay: Param[Int] = new IntParam(
this,
"anchorDateDay",
"Add an anchor day of the day for the relative dates such as a day after tomorrow. If not set it will use the current day. Example: 11")
/** @group setParam */
def setAnchorDateDay(value: Int): this.type = {
require(
value <= 31 || value >= 1,
"The day value starts from 1. The value must be between 1 and 31")
set(anchorDateDay, value)
}
/** @group getParam */
def getAnchorDateDay: Int = $(anchorDateDay)
/** Whether to interpret dates as MM/DD/YYYY instead of DD/MM/YYYY (Default: `true`)
*
* @group param
*/
val readMonthFirst: BooleanParam = new BooleanParam(
this,
"readMonthFirst",
"Whether to interpret dates as MM/DD/YYYY instead of DD/MM/YYYY")
/** @group setParam */
def setReadMonthFirst(value: Boolean): this.type = set(readMonthFirst, value)
/** @group getParam */
def getReadMonthFirst: Boolean = $(readMonthFirst)
/** Which day to set when it is missing from parsed input (Default: `1`)
*
* @group param
*/
val defaultDayWhenMissing: IntParam = new IntParam(
this,
"defaultDayWhenMissing",
"Which day to set when it is missing from parsed input")
/** @group setParam */
def setDefaultDayWhenMissing(value: Int): this.type = set(defaultDayWhenMissing, value)
/** @group getParam */
def getDefaultDayWhenMissing: Int = $(defaultDayWhenMissing)
/** Source language for explicit translation
*
* @group param
*/
val sourceLanguage: Param[String] =
new Param(this, "sourceLanguage", "source language for explicit translation")
/** To get to use or not the multi-language translation.
*
* @group getParam
*/
def getSourceLanguage: String = $(sourceLanguage)
/** To set or not the source language for explicit translation.
*
* @group setParam
*/
def setSourceLanguage(value: String): this.type = set(sourceLanguage, value)
/** Matched strategy to search relaxed dates by ordered rules by more exhaustive to less
* Strategy
*
* @group param
*/
val relaxedFactoryStrategy: Param[String] =
new Param(this, "relaxedFactoryStrategy", "Matched Strategy to searches relaxed dates")
/** To set matched strategy to search relaxed dates by ordered rules by more exhaustive to less
* Strategy
*
* @group param
*/
def setRelaxedFactoryStrategy(
matchStrategy: MatchStrategy.Format = MatchStrategy.MATCH_FIRST): this.type = {
set(relaxedFactoryStrategy, matchStrategy.toString)
}
/** To get matched strategy to search relaxed dates by ordered rules by more exhaustive to less
* Strategy
*
* @group param
*/
def getRelaxedFactoryStrategy: String = $(relaxedFactoryStrategy)
/** Whether to aggressively attempt to find date matches, even in ambiguous or less common
* formats (Default: `false`)
*
* @group param
*/
val aggressiveMatching: BooleanParam = new BooleanParam(
this,
"aggressiveMatching",
"Whether to aggressively attempt to find date matches, even in ambiguous or less common formats")
/** To set aggressive matching Strategy
*
* @group param
*/
def setAggressiveMatching(value: Boolean): this.type = set(aggressiveMatching, value)
/** To get aggressive matching Strategy
*
* @group param
*/
def getAggressiveMatching: Boolean = $(aggressiveMatching)
setDefault(
inputFormats -> Array(""),
outputFormat -> "yyyy/MM/dd",
anchorDateYear -> -1,
anchorDateMonth -> -1,
anchorDateDay -> -1,
readMonthFirst -> true,
defaultDayWhenMissing -> 1,
sourceLanguage -> "en",
relaxedFactoryStrategy -> MatchStrategy.MATCH_FIRST.toString,
aggressiveMatching -> false)
protected val formalFactoryInputFormats = new RuleFactory(MatchStrategy.MATCH_ALL)
protected val formalInputFormats: Map[String, Regex] = Map(
"yyyy/dd/MM" -> new Regex(
"\\b(\\d{2,4})[-/]([0-2]?[1-9]|[1-3][0-1])[-/](0?[1-9]|1[012])\\b",
"year",
"day",
"month"),
"dd/MM/yyyy" -> new Regex(
"\\b([0-2]?[1-9]|[1-3][0-1])[-/](0?[1-9]|1[012])[-/](\\d{2,4})\\b",
"day",
"month",
"year"),
"yyyy/MM/dd" -> new Regex(
"\\b(\\d{2,4})[-/](0?[1-9]|1[012])[-/]([0-2]?[1-9]|[1-3][0-1])\\b",
"year",
"month",
"day"),
"yyyy/MM" -> new Regex("\\b(\\d{2,4})[-/](0?[1-9]|1[012])\\b", "year", "month"),
"dd/MM" -> new Regex("\\b([0-2]?[1-9]|[1-3][0-1])[-/](0?[1-9]|1[012])\\b", "day", "month"),
"MM/dd" -> new Regex("\\b(0?[1-9]|1[012])[-/]([0-2]?[1-9]|[1-3][0-1])\\b", "month", "day"),
"MM/yyyy" -> new Regex("\\s+\\b(0?[1-9]|1[012])[-/](\\d{2,4})\\b", "month", "year"),
"yyyy-dd-MM" -> new Regex(
"\\b(\\d{2,4})[-/]([0-2]?[1-9]|[1-3][0-1])[-/](0?[1-9]|1[012])\\b",
"year",
"day",
"month"),
"dd-MM-yyyy" -> new Regex(
"\\b([0-2]?[1-9]|[1-3][0-1])[-/](0?[1-9]|1[012])[-/](\\d{2,4})\\b",
"day",
"month",
"year"),
"yyyy-MM-dd" -> new Regex(
"\\b(\\d{2,4})[-/](0?[1-9]|1[012])[-/]([0-2]?[1-9]|[1-3][0-1])\\b",
"year",
"month",
"day"),
"dd-MM" -> new Regex("\\b([0-2]?[1-9]|[1-3][0-1])[-/](0?[1-9]|1[012])\\b", "day", "month"),
"yyyy-MM" -> new Regex("\\b(\\d{2,4})[-/](0?[1-9]|1[012])\\b", "year", "month"),
"dd-MM" -> new Regex("\\b([0-2]?[1-9]|[1-3][0-1])[-/](0?[1-9]|1[012])\\b", "day", "month"),
"MM-dd" -> new Regex("\\b(0?[1-9]|1[012])[-/]([0-2]?[1-9]|[1-3][0-1])\\b", "month", "day"),
"MM-yyyy" -> new Regex("\\b(0?[1-9]|1[012])[-/](\\d{2,4})\\b", "month", "year"),
"yyyy" -> new Regex("\\b(\\d{4})\\b", "year"))
/** Searches formal date by ordered rules Matching strategy is to find first match only, ignore
* additional matches from then Any 4 digit year will be assumed a year, any 2 digit year will
* be as part of XX Century e.g. 1954
*/
protected val formalFactory = new RuleFactory(MatchStrategy.MATCH_ALL)
if ($(readMonthFirst))
formalFactory
.addRule(formalDate, "formal date with month at first")
.addRule(formalDateAlt, "formal date with day at first")
.addRule(formalDateAlt2, "formal date with year at beginning")
.addRule(formalDateShort, "formal date short version")
else
formalFactory
.addRule(formalDateAlt, "formal date with day at first")
.addRule(formalDate, "formal date with month at first")
.addRule(formalDateAlt2, "formal date with year at beginning")
.addRule(formalDateShort, "formal date short version")
/** Searches relaxed dates by ordered rules by more exhaustive to less Strategy. Auto completes
* short versions of months. Any two digit year is considered to be XX century
*/
protected lazy val relaxedFactory: RuleFactory = new RuleFactory(getRelaxedFactoryStrategy)
.addRule(relaxedDayNumbered, "relaxed days")
.addRule(relaxedMonths.r, "relaxed months exclusive")
.addRule(relaxedYear, "relaxed year")
/** extracts relative dates. Strategy is to get only first match. Will always assume relative
* day from current time at processing ToDo: Support relative dates from input date
*/
protected val relativeFactory: RuleFactory = new RuleFactory(MatchStrategy.MATCH_FIRST)
.addRule(relativeDate, "relative dates")
protected val relativePastFactory: RuleFactory = new RuleFactory(MatchStrategy.MATCH_FIRST)
.addRule(relativeDatePast, "relative dates in the past")
protected val relativeFutureFactory: RuleFactory = new RuleFactory(MatchStrategy.MATCH_FIRST)
.addRule(relativeDateFuture, "relative dates in the future")
/** Searches for relative informal dates such as today or the day after tomorrow */
protected val tyFactory: RuleFactory = new RuleFactory(MatchStrategy.MATCH_FIRST)
.addRule(relativeDay, "relative days")
/** Searches for exactly provided days of the week. Always relative from current time at
* processing
*/
protected val relativeExactFactory: RuleFactory = new RuleFactory(MatchStrategy.MATCH_ALL)
.addRule(relativeExactDay, "relative precise dates")
/** Searches for times of the day dateTime If any dates found previously, keep it as part of the
* final result text target document
*
* @return
* a final possible date if any found
*/
protected val timeFactory: RuleFactory = new RuleFactory(MatchStrategy.MATCH_FIRST)
.addRule(clockTime, "standard time extraction")
.addRule(altTime, "alternative time format")
.addRule(coordTIme, "coordinate like time")
.addRule(refTime, "referred time")
protected def calculateAnchorCalendar(): Calendar = {
val calendar = Calendar.getInstance()
val anchorYear =
if ($(anchorDateYear) != -1) $(anchorDateYear) else calendar.get(Calendar.YEAR)
val anchorMonth =
if ($(anchorDateMonth) != -1) $(anchorDateMonth) else calendar.get(Calendar.MONTH)
val anchorDay =
if ($(anchorDateDay) != -1) $(anchorDateDay) else calendar.get(Calendar.DAY_OF_MONTH)
calendar.set(anchorYear, anchorMonth, anchorDay)
calendar
}
protected def formalDateContentParse(date: RuleFactory.RuleMatch): MatchedDateTime = {
val formalDate = date.content
val calendar = new Calendar.Builder()
def processYear = {
Try(formalDate.group("year")) match {
case Success(_) =>
if (formalDate.group("year").toInt > 999)
formalDate.group("year").toInt
/** If year found is greater than <10> years from now, assume text is talking about 20th
* century
*/
else if (formalDate.group("year").toInt > Calendar.getInstance
.get(Calendar.YEAR)
.toString
.takeRight(2)
.toInt + 10)
formalDate.group("year").toInt + 1900
else
formalDate.group("year").toInt + 2000
case Failure(_) => Calendar.getInstance().get(Calendar.YEAR)
}
}
def processMonth = {
Try(formalDate.group("month")) match {
case Success(_) => formalDate.group("month").toInt - 1
case Failure(_) => 0
}
}
def processDay = {
Try(formalDate.group("day")) match {
case Success(_) =>
if (formalDate.groupCount == 3) formalDate.group("day").toInt
else $(defaultDayWhenMissing)
case Failure(_) => 1
}
}
MatchedDateTime(
calendar.setDate(processYear, processMonth, processDay).build(),
formalDate.start,
formalDate.end)
}
protected def relativeDateFutureContentParse(date: RuleFactory.RuleMatch): MatchedDateTime = {
val relativeDateFuture = date.content
val calendar = calculateAnchorCalendar()
val amount = relativeDateFuture.group(2).toInt
relativeDateFuture.group(3) match {
case "hour" | "hours" => calendar.add(Calendar.HOUR_OF_DAY, amount)
case "day" | "days" => calendar.add(Calendar.DAY_OF_MONTH, amount)
case "week" | "weeks" => calendar.add(Calendar.WEEK_OF_MONTH, amount)
case "month" | "months" => calendar.add(Calendar.MONTH, amount)
case "year" | "years" => calendar.add(Calendar.YEAR, amount)
case _ =>
}
MatchedDateTime(calendar, relativeDateFuture.start, relativeDateFuture.end)
}
protected def relativeDatePastContentParse(date: RuleFactory.RuleMatch): MatchedDateTime = {
val relativeDatePast = date.content
val calendar = calculateAnchorCalendar()
val amount = -relativeDatePast.group(1).toInt
relativeDatePast.group(2) match {
case "day" | "days" => calendar.add(Calendar.DAY_OF_MONTH, amount)
case "week" | "weeks" => calendar.add(Calendar.WEEK_OF_MONTH, amount)
case "month" | "months" => calendar.add(Calendar.MONTH, amount)
case "year" | "years" => calendar.add(Calendar.YEAR, amount)
case _ =>
}
MatchedDateTime(calendar, relativeDatePast.start, relativeDatePast.end)
}
protected def relativeDateContentParse(date: RuleFactory.RuleMatch): MatchedDateTime = {
val relativeDate = date.content
val calendar = calculateAnchorCalendar()
val amount = if (relativeDate.group(1) == "next") 1 else -1
relativeDate.group(2) match {
case "week" => calendar.add(Calendar.WEEK_OF_MONTH, amount)
case "month" => calendar.add(Calendar.MONTH, amount)
case "year" => calendar.add(Calendar.YEAR, amount)
case _ =>
}
MatchedDateTime(calendar, relativeDate.start, relativeDate.end)
}
def tomorrowYesterdayContentParse(date: RuleFactory.RuleMatch): MatchedDateTime = {
val tyDate = date.content
val calendar = calculateAnchorCalendar()
tyDate.matched.toLowerCase match {
case "today" =>
MatchedDateTime(calendar, tyDate.start, tyDate.end)
case "tomorrow" =>
calendar.add(Calendar.DAY_OF_MONTH, 1)
MatchedDateTime(calendar, tyDate.start, tyDate.end)
case "past tomorrow" =>
calendar.add(Calendar.DAY_OF_MONTH, 2)
MatchedDateTime(calendar, tyDate.start, tyDate.end)
case "yesterday" =>
calendar.add(Calendar.DAY_OF_MONTH, -1)
MatchedDateTime(calendar, tyDate.start, tyDate.end)
case " day after" =>
calendar.add(Calendar.DAY_OF_MONTH, 1)
MatchedDateTime(calendar, tyDate.start, tyDate.end)
case " day before" =>
calendar.add(Calendar.DAY_OF_MONTH, -1)
MatchedDateTime(calendar, tyDate.start, tyDate.end)
case " day after tomorrow" =>
calendar.add(Calendar.DAY_OF_MONTH, 2)
MatchedDateTime(calendar, tyDate.start, tyDate.end)
case " day before yesterday" =>
calendar.add(Calendar.DAY_OF_MONTH, -2)
MatchedDateTime(calendar, tyDate.start, tyDate.end)
case _ => MatchedDateTime(calendar, tyDate.start, tyDate.end)
}
}
def relativeExactContentParse(possibleDate: RuleFactory.RuleMatch): MatchedDateTime = {
val relativeDate = possibleDate.content
val calendar = calculateAnchorCalendar()
val amount = if (relativeDate.group(1) == "next") 1 else -1
calendar.add(Calendar.DAY_OF_MONTH, amount)
relativeDate.group(2) match {
case "mon" =>
while (calendar.get(Calendar.DAY_OF_WEEK) != Calendar.MONDAY) {
calendar.add(Calendar.DAY_OF_MONTH, amount)
}
case "tue" =>
while (calendar.get(Calendar.DAY_OF_WEEK) != Calendar.TUESDAY) {
calendar.add(Calendar.DAY_OF_MONTH, amount)
}
case "wed" =>
while (calendar.get(Calendar.DAY_OF_WEEK) != Calendar.WEDNESDAY) {
calendar.add(Calendar.DAY_OF_MONTH, amount)
}
case "thu" =>
while (calendar.get(Calendar.DAY_OF_WEEK) != Calendar.THURSDAY) {
calendar.add(Calendar.DAY_OF_MONTH, amount)
}
case "fri" =>
while (calendar.get(Calendar.DAY_OF_WEEK) != Calendar.FRIDAY) {
calendar.add(Calendar.DAY_OF_MONTH, amount)
}
case _ =>
}
MatchedDateTime(calendar, relativeDate.start, relativeDate.end)
}
}
