From ecf49d10eca7a433f6eb45753108e20bfdd5759e Mon Sep 17 00:00:00 2001
From: Wutipong Wongsakuldej <mr_tawan@hotmail.com>
Date: Tue, 21 Nov 2023 04:07:11 +0700
Subject: [PATCH] add join string n-elements.

---
 __init__.py                        |  3 +++
 join_string_list_n_element_node.py | 31 ++++++++++++++++++++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 join_string_list_n_element_node.py

diff --git a/__init__.py b/__init__.py
index 2419136..0f73fec 100644
--- a/__init__.py
+++ b/__init__.py
@@ -2,12 +2,14 @@ from .create_n_token_node import CreateNTokenStringNode
 from .join_string_node import JoinStringsNode
 from .split_string_node import SplitStringNode
 from .join_string_list_node import JoinStringListNode
+from .join_string_list_n_element_node import JoinStringListNElementNode
 
 NODE_CLASS_MAPPINGS = {
     "Text Utils - String Subparts": CreateNTokenStringNode,
     "Text Utils - Join Strings": JoinStringsNode,
     "Text Utils - Split String to List": SplitStringNode,
     "Text Utils - Join String List": JoinStringListNode,
+    "Text Utils - Join String List N-Elements": JoinStringListNElementNode,
 }
 
 NODE_DISPLAY_NAME_MAPPINGS = {
@@ -15,4 +17,5 @@ NODE_DISPLAY_NAME_MAPPINGS = {
     "Text Utils - Join Strings": "Join Strings",
     "Text Utils - Split String to list": "Split String to List",
     "Text Utils - Join String List": "Join String List to one string",
+    "Text Utils - Join String List N-Elements": "Join N-Element of String List to one string",
 }
diff --git a/join_string_list_n_element_node.py b/join_string_list_n_element_node.py
new file mode 100644
index 0000000..b03645d
--- /dev/null
+++ b/join_string_list_n_element_node.py
@@ -0,0 +1,31 @@
+class JoinStringListNElementNode:
+    @classmethod
+    def INPUT_TYPES(cls):
+        return {
+            "required": {
+                "texts": ("STRING", {"forceInput": True}),
+                "separator": ("STRING", {"default": "/"}),
+                "n": ("INT", {"default": 0, "min": 0, "max": 10000, "step": 1}),
+                "start_from": (["front", "back"],)
+            },
+        }
+    INPUT_IS_LIST = True
+    RETURN_TYPES = ("STRING",)
+    RETURN_NAMES = ("TEXT",)
+    FUNCTION = "perform_join_string_list"
+    CATEGORY = "text utility"
+
+    def perform_join_string_list(self, texts, separator, n, start_from):
+        separator = separator[0]
+        n = n[0]
+        start_from = start_from[0]
+
+        if start_from == "front":
+            return (separator.join(texts[0: n]), )
+        else:
+            l = len(texts)
+            start = l - n
+            if start < 0:
+                start = 0
+
+            return (separator.join(texts[start: l]), )