support for prompt styles

fix broken prompt matrix

modules/styles.py

@@ -0,0 +1,41 @@
+import csv
+import os.path
+from collections import namedtuple
+
+PromptStyle = namedtuple("PromptStyle", ["name", "text"])
+
+
+def load_styles(filename):
+    res = {"None": PromptStyle("None", "")}
+
+    if os.path.exists(filename):
+        with open(filename, "r", encoding="utf8", newline='') as file:
+            reader = csv.DictReader(file)
+
+            for row in reader:
+                res[row["name"]] = PromptStyle(row["name"], row["text"])
+
+    return res
+
+
+def apply_style_text(style_text, prompt):
+    return prompt + ", " + style_text if prompt else style_text
+
+
+def apply_style(p, style):
+    if type(p.prompt) == list:
+        p.prompt = [apply_style_text(style.text, x) for x in p.prompt]
+    else:
+        p.prompt = apply_style_text(style.text, p.prompt)
+
+
+def save_style(filename, style):
+    with open(filename, "a", encoding="utf8", newline='') as file:
+        atstart = file.tell() == 0
+
+        writer = csv.DictWriter(file, fieldnames=["name", "text"])
+
+        if atstart:
+            writer.writeheader()
+
+        writer.writerow({"name": style.name, "text": style.text})