add text processes (#279)

* add text processes

* fix test

* pre commit

openeo_processes_dask/process_implementations/__init__.py

@@ -8,6 +8,7 @@
 from .inspect import *
 from .logic import *
 from .math import *
+from .text import *
 
 try:
     from .ml import *

openeo_processes_dask/process_implementations/text.py

@@ -0,0 +1,50 @@
+from typing import Any, Optional
+
+
+def text_begins(data: str, pattern: str, case_sensitive: Optional[bool] = True) -> str:
+    if data:
+        if case_sensitive:
+            return data.startswith(pattern)
+        else:
+            return data.lower().startswith(pattern.lower())
+    else:
+        return None
+
+
+def text_contains(
+    data: str, pattern: str, case_sensitive: Optional[bool] = True
+) -> str:
+    if data:
+        if case_sensitive:
+            return pattern in data
+        else:
+            return pattern.lower() in data.lower()
+    else:
+        return None
+
+
+def text_ends(data: str, pattern: str, case_sensitive: Optional[bool] = True) -> str:
+    if data:
+        if case_sensitive:
+            return data.endswith(pattern)
+        else:
+            return data.lower().endswith(pattern.lower())
+    else:
+        return None
+
+
+def text_concat(data: list[Any], separator: Any) -> str:
+    string = ""
+    for elem in data:
+        if isinstance(elem, bool) or elem is None:
+            string += str(elem).lower()
+        else:
+            string += str(elem)
+        if isinstance(separator, bool) or separator is None:
+            string += str(separator).lower()
+        else:
+            string += str(separator)
+    if separator == "":
+        return string
+    else:
+        return string[: -len(str(separator))]

tests/test_text.py

@@ -0,0 +1,75 @@
+import pytest
+
+from openeo_processes_dask.process_implementations.text import *
+
+
+@pytest.mark.parametrize(
+    "string,expected,pattern,case_sensitive",
+    [
+        ("Lorem ipsum dolor sit amet", False, "amet", True),
+        ("Lorem ipsum dolor sit amet", True, "Lorem", True),
+        ("Lorem ipsum dolor sit amet", False, "lorem", True),
+        ("Lorem ipsum dolor sit amet", True, "lorem", False),
+        ("Ä", True, "ä", False),
+        (None, "nan", "null", True),
+    ],
+)
+def test_text_begins(string, expected, pattern, case_sensitive):
+    result = text_begins(string, pattern, case_sensitive)
+    if isinstance(expected, str) and "nan" == expected:
+        assert result is None
+    else:
+        assert result == expected
+
+
+@pytest.mark.parametrize(
+    "string,expected,pattern,case_sensitive",
+    [
+        ("Lorem ipsum dolor sit amet", True, "amet", True),
+        ("Lorem ipsum dolor sit amet", False, "Lorem", True),
+        ("Lorem ipsum dolor sit amet", False, "AMET", True),
+        ("Lorem ipsum dolor sit amet", True, "AMET", False),
+        ("Ä", True, "ä", False),
+        (None, "nan", "null", True),
+    ],
+)
+def test_text_ends(string, expected, pattern, case_sensitive):
+    result = text_ends(string, pattern, case_sensitive)
+    if isinstance(expected, str) and "nan" == expected:
+        assert result is None
+    else:
+        assert result == expected
+
+
+@pytest.mark.parametrize(
+    "string,expected,pattern,case_sensitive",
+    [
+        ("Lorem ipsum dolor sit amet", False, "openEO", True),
+        ("Lorem ipsum dolor sit amet", True, "ipsum dolor", True),
+        ("Lorem ipsum dolor sit amet", False, "Ipsum Dolor", True),
+        ("Lorem ipsum dolor sit amet", True, "SIT", False),
+        ("ÄÖÜ", True, "ö", False),
+        (None, "nan", "null", True),
+    ],
+)
+def test_text_contains(string, expected, pattern, case_sensitive):
+    result = text_contains(string, pattern, case_sensitive)
+    if isinstance(expected, str) and "nan" == expected:
+        assert result is None
+    else:
+        assert result == expected
+
+
+@pytest.mark.parametrize(
+    "data,expected,separator",
+    [
+        (["Hello", "World"], "Hello World", " "),
+        ([1, 2, 3, 4, 5, 6, 7, 8, 9, 0], "1234567890", ""),
+        ([None, True, False, 1, -1.5, "ß"], "none\ntrue\nfalse\n1\n-1.5\nß", "\n"),
+        ([2, 0], "210", 1),
+        ([], "", ""),
+    ],
+)
+def test_text_contains(data, expected, separator):
+    result = text_concat(data, separator)
+    assert result == expected