Add Ukrainian language

docker/dockerfiles/joex.dockerfile

@@ -32,6 +32,7 @@ RUN apk update && \
     tesseract-ocr-data-lit \
     tesseract-ocr-data-pol \
     tesseract-ocr-data-est \
+    tesseract-ocr-data-ukr \
     unpaper \
     weasyprint \
     libreoffice \

modules/analysis/src/main/scala/docspell/analysis/date/DateFind.scala

@@ -54,10 +54,28 @@ object DateFind {
         (sep + "md") -> text
       } else sep -> text
 
+    val ukrFlexion = List(
+      "р",
+      "рік",
+      "року",
+      "ого",
+      "го",
+      "ий",
+      "ій",
+      "й",
+      "ше",
+      "ге",
+      "тє",
+      "те",
+      "ме",
+      "е",
+      "є"
+    )
     TextSplitter
       .splitToken(stext, separators.toSet)
       .filter(w => lang != Language.Latvian || w.value != "gada")
       .filter(w => lang != Language.Spanish || w.value != "de")
+      .filter(w => lang != Language.Ukrainian || !ukrFlexion.contains(w.value))
   }
 
   case class SimpleDate(year: Int, month: Int, day: Int) {
@@ -111,6 +129,7 @@ object DateFind {
         case Language.Lithuanian => ymd
         case Language.Polish     => dmy
         case Language.Estonian   => dmy
+        case Language.Ukrainian  => dmy.or(ymd)
       }
       p.read(parts) match {
         case Result.Success(sds, _) =>

modules/analysis/src/main/scala/docspell/analysis/date/MonthName.scala

@@ -62,6 +62,8 @@ object MonthName {
         polish
       case Language.Estonian =>
         estonian
+      case Language.Ukrainian =>
+        ukrainian
     }
 
   private val numbers = List(
@@ -392,4 +394,19 @@ object MonthName {
     List("november", "nov"),
     List("detsember", "dets")
   )
+
+  private val ukrainian = List(
+    List("січня", "січн", "січ"),
+    List("лютого", "лют"),
+    List("березня", "бер"),
+    List("квітня", "квіт", "кві"),
+    List("травня", "трав", "тра"),
+    List("червня", "черв", "чер"),
+    List("липня", "лип"),
+    List("серпня", "серп", "сер"),
+    List("вересня", "вер"),
+    List("жовтня", "жовт", "жов"),
+    List("листопада", "лист", "лис"),
+    List("грудня", "груд", "гру")
+  )
 }

modules/analysis/src/test/scala/docspell/analysis/date/DateFindTest.scala

@@ -287,4 +287,82 @@ class DateFindTest extends FunSuite {
       )
     )
   }
+
+  test("find ukrainian dates") {
+    // officially used ones
+    assertEquals(
+      DateFind
+        .findDates(
+          "Цей текст був написаний 5 листопада 2022 року. Слава Україні!",
+          Language.Ukrainian
+        )
+        .toVector,
+      Vector(
+        NerDateLabel(
+          LocalDate.of(2022, 11, 5),
+          NerLabel("5 листопада 2022", NerTag.Date, 24, 40)
+        )
+      )
+    )
+    assertEquals(
+      DateFind
+        .findDates("05.11.2022 — це субота", Language.Ukrainian)
+        .toVector,
+      Vector(
+        NerDateLabel(
+          LocalDate.of(2022, 11, 5),
+          NerLabel("05.11.2022", NerTag.Date, 0, 10)
+        )
+      )
+    )
+    // less common but also used
+    assertEquals(
+      DateFind
+        .findDates(
+          "Сьогодні 5 лист. 2022 р. Слава Україні!",
+          Language.Ukrainian
+        )
+        .toVector,
+      Vector(
+        NerDateLabel(
+          LocalDate.of(2022, 11, 5),
+          NerLabel("5 лист. 2022", NerTag.Date, 9, 21)
+        )
+      )
+    )
+    assertEquals(
+      DateFind
+        .findDates("Дата: 2022.11.05", Language.Ukrainian)
+        .toVector,
+      Vector(
+        NerDateLabel(
+          LocalDate.of(2022, 11, 5),
+          NerLabel("2022.11.05", NerTag.Date, 6, 16)
+        )
+      )
+    )
+    // vernacular variants
+    assertEquals(
+      DateFind
+        .findDates("Ілля Рєпін народився 5-го серпня 1844-го року.", Language.Ukrainian)
+        .toVector,
+      Vector(
+        NerDateLabel(
+          LocalDate.of(1844, 8, 5),
+          NerLabel("5-го серпня 1844", NerTag.Date, 21, 37)
+        )
+      )
+    )
+    assertEquals(
+      DateFind
+        .findDates("3-тє жовт., 2022-й рік  — це 33 дні тому", Language.Ukrainian)
+        .toVector,
+      Vector(
+        NerDateLabel(
+          LocalDate.of(2022, 10, 3),
+          NerLabel("3-тє жовт., 2022", NerTag.Date, 0, 16)
+        )
+      )
+    )
+  }
 }

modules/common/src/main/scala/docspell/common/Language.scala

@@ -138,6 +138,11 @@ object Language {
     val iso3 = "est"
   }
 
+  case object Ukrainian extends Language {
+    val iso2 = "uk"
+    val iso3 = "ukr"
+  }
+
   val all: List[Language] =
     List(
       German,
@@ -160,7 +165,8 @@ object Language {
       Hebrew,
       Lithuanian,
       Polish,
-      Estonian
+      Estonian,
+      Ukrainian
     )
 
   def fromString(str: String): Either[String, Language] = {

modules/fts-psql/src/main/scala/docspell/ftspsql/FtsRepository.scala

@@ -205,5 +205,6 @@ object FtsRepository extends DoobieMeta {
       case Language.Lithuanian => "simple"
       case Language.Polish     => "simple"
       case Language.Estonian   => "simple"
+      case Language.Ukrainian  => "simple"
     }
 }

modules/fts-solr/src/main/scala/docspell/ftssolr/SolrSetup.scala

@@ -161,7 +161,13 @@ object SolrSetup {
             28,
             "Add Estonian",
             addContentField(Language.Estonian)
-          )
+          ),
+          SolrMigration[F](
+            29,
+            "Add Ukrainian",
+            addContentField(Language.Ukrainian)
+          ),
+          SolrMigration.reIndexAll(30, "Re-Index after adding Estonian and Ukrainian")
         )
 
       def addFolderField: F[Unit] =

modules/webapp/src/main/elm/Data/Language.elm

@@ -35,6 +35,7 @@ type Language
     | Lithuanian
     | Polish
     | Estonian
+    | Ukrainian
 
 
 fromString : String -> Maybe Language
@@ -102,6 +103,9 @@ fromString str =
     else if str == "est" || str == "et" || str == "estonian" then
         Just Estonian
 
+    else if str == "ukr" || str == "uk" || str == "ukrainian" then
+        Just Ukrainian
+
     else
         Nothing
 
@@ -172,6 +176,9 @@ toIso3 lang =
         Estonian ->
             "est"
 
+        Ukrainian ->
+            "ukr"
+
 
 all : List Language
 all =
@@ -196,4 +203,5 @@ all =
     , Lithuanian
     , Polish
     , Estonian
+    , Ukrainian
     ]

modules/webapp/src/main/elm/Messages/Data/Language.elm

@@ -80,6 +80,9 @@ gb lang =
         Estonian ->
             "Estonian"
 
+        Ukrainian ->
+            "Ukrainian"
+
 
 de : Language -> String
 de lang =
@@ -147,6 +150,9 @@ de lang =
         Estonian ->
             "Estnisch"
 
+        Ukrainian ->
+            "Ukrainisch"
+
 
 fr : Language -> String
 fr lang =
@@ -213,3 +219,6 @@ fr lang =
 
         Estonian ->
             "Estonien"
+
+        Ukrainian ->
+            "Ukrainien"

website/site/content/docs/dev/add-language.md

@@ -21,7 +21,11 @@ relevant things to do. These are:
   the `all` list (then fix compile errors)
 - define a list of month names to support date recognition and update
   `DateFind.scala` to recognize date patterns for that language. Add
-  some tests to `DateFindTest`.
+  some tests to `DateFindTest`. While writing test-cases, you can check
+  them via `sbt`'s command prompt as following:
+    ```
+    testOnly docspell.analysis.date.DateFindTest
+    ```
 - add it to joex' dockerfile to be available for tesseract
 - update the solr migration/field definitions in `SolrSetup`. Create a
   new solr migration that adds the content field for the new