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Raykosan-ComfyUI_RaykoStudio/Rayko_Styles_Loader.py
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# SPDX-License-Identifier: Apache-2.0
# Copyright 2025-2026 Raykosan (RaykoStudio)
#
# 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.
import os
import re
import logging
import json
from typing import Dict, List, Tuple, Optional, Any
import folder_paths
logger = logging.getLogger(__name__)
class RaykoStylesCSVLoader:
STYLES_FOLDER = "styles"
FAVORITES_FILE = "favorites.json"
PRESETS_SUBFOLDER = "presets"
@classmethod
def get_node_dir(cls) -> str:
return os.path.dirname(os.path.abspath(__file__))
@classmethod
def get_styles_folder_path(cls) -> str:
return os.path.join(cls.get_node_dir(), cls.STYLES_FOLDER)
@classmethod
def get_favorites_path(cls) -> str:
return os.path.join(cls.get_styles_folder_path(), cls.FAVORITES_FILE)
@classmethod
def get_presets_folder_path(cls) -> str:
return os.path.join(cls.get_styles_folder_path(), cls.PRESETS_SUBFOLDER)
@classmethod
def get_available_style_files(cls) -> List[str]:
styles_folder = cls.get_styles_folder_path()
if not os.path.exists(styles_folder):
os.makedirs(styles_folder, exist_ok=True)
return []
files = [
f for f in os.listdir(styles_folder)
if os.path.isfile(os.path.join(styles_folder, f))
and f.lower().endswith('.csv')
]
return sorted(files)
@classmethod
def load_styles_csv(cls, styles_path: str) -> Dict[str, List[str]]:
styles = {}
if not os.path.exists(styles_path):
logger.error(f"Style file not found: {styles_path}")
return {}
try:
with open(styles_path, "r", encoding="utf-8") as f:
lines = f.readlines()
if not lines:
logger.warning(f"Empty file: {styles_path}")
return {}
for i, line in enumerate(lines[1:], 1):
line = line.strip()
if not line:
continue
parts = [
part.strip().strip('"') for part in re.split(
',(?=(?:[^"]*"[^"]*")*[^"]*$)', line
)
]
if len(parts) >= 3:
style_name = parts[0].strip()
positive_prompt = parts[1].strip()
negative_prompt = parts[2].strip()
styles[style_name] = [positive_prompt, negative_prompt]
else:
logger.warning(f"Invalid format in line {i}: {line}")
return styles
except Exception as e:
logger.error(f"Error loading styles from {styles_path}: {str(e)}")
return {}
@classmethod
def get_style_prompts(cls, style_file: str, style_name: str) -> Tuple[str, str]:
if not style_file or not style_name:
return ("", "")
safe_filename = os.path.basename(style_file.strip())
styles_folder = cls.get_styles_folder_path()
file_path = os.path.join(styles_folder, safe_filename)
if not os.path.realpath(file_path).startswith(os.path.realpath(styles_folder) + os.sep):
logger.error(f"Path traversal attempt blocked: {style_file}")
return ("", "")
styles = cls.load_styles_csv(file_path)
if style_name in styles:
return (styles[style_name][0], styles[style_name][1])
style_name_clean = style_name.strip()
for key in styles:
if key.strip() == style_name_clean:
return (styles[key][0], styles[key][1])
return ("", "")
@classmethod
def load_favorites(cls) -> Dict[str, List[Dict[str, str]]]:
favorites_path = cls.get_favorites_path()
if not os.path.exists(favorites_path):
return {}
try:
with open(favorites_path, "r", encoding="utf-8") as f:
data = json.load(f)
if isinstance(data, dict):
return data
return {}
except Exception as e:
logger.error(f"Error loading favorites: {str(e)}")
return {}
@classmethod
def save_favorites(cls, favorites: Dict[str, List[Dict[str, str]]]) -> bool:
favorites_path = cls.get_favorites_path()
styles_folder = cls.get_styles_folder_path()
try:
os.makedirs(styles_folder, exist_ok=True)
with open(favorites_path, "w", encoding="utf-8") as f:
json.dump(favorites, f, ensure_ascii=False, indent=2)
return True
except Exception as e:
logger.error(f"Error saving favorites: {str(e)}")
return False
@classmethod
def list_presets(cls) -> List[str]:
presets_folder = cls.get_presets_folder_path()
if not os.path.exists(presets_folder):
return []
try:
presets = [
f[:-5] for f in os.listdir(presets_folder)
if f.endswith('.json')
]
return sorted(presets, key=lambda x: x.lower())
except Exception as e:
logger.error(f"Error listing presets: {str(e)}")
return []
@classmethod
def save_preset(cls, name: str, preset_data: Dict) -> bool:
presets_folder = cls.get_presets_folder_path()
try:
os.makedirs(presets_folder, exist_ok=True)
filepath = os.path.join(presets_folder, f"{name}.json")
with open(filepath, "w", encoding="utf-8") as f:
json.dump(preset_data, f, ensure_ascii=False, indent=2)
return True
except Exception as e:
logger.error(f"Error saving preset: {str(e)}")
return False
@classmethod
def load_preset(cls, name: str) -> Optional[Dict]:
presets_folder = cls.get_presets_folder_path()
filepath = os.path.join(presets_folder, f"{name}.json")
if not os.path.exists(filepath):
return None
try:
with open(filepath, "r", encoding="utf-8") as f:
return json.load(f)
except Exception as e:
logger.error(f"Error loading preset: {str(e)}")
return None
@classmethod
def delete_preset(cls, name: str) -> bool:
presets_folder = cls.get_presets_folder_path()
filepath = os.path.join(presets_folder, f"{name}.json")
if not os.path.exists(filepath):
return False
try:
os.remove(filepath)
return True
except Exception as e:
logger.error(f"Error deleting preset: {str(e)}")
return False
@classmethod
def INPUT_TYPES(cls) -> Dict[str, Any]:
return {
"required": {
"node_data": ("STRING", {
"default": "{}",
"hidden": True
}),
}
}
RETURN_TYPES = ("STRING", "STRING")
RETURN_NAMES = ("positive prompt", "negative prompt")
FUNCTION = "load_style"
CATEGORY = "🦊 RaykoStudio"
DESCRIPTION = "Loads and combines styles from CSV files for prompt generation."
@classmethod
def IS_CHANGED(cls, node_data="{}", **kwargs):
import hashlib
if isinstance(node_data, str):
return hashlib.md5(node_data.encode()).hexdigest()
return hashlib.md5(json.dumps(node_data, sort_keys=True).encode()).hexdigest()
def load_style(self, node_data: str = "{}") -> Tuple[str, str]:
try:
data = json.loads(node_data) if node_data else {}
styles_list = data.get("styles", [])
if not styles_list:
return ("", "")
all_positive = []
all_negative = []
for style in styles_list:
name = style.get("name", "")
file = style.get("file", "")
enabled = style.get("enabled", True)
if name and enabled:
pos, neg = self.get_style_prompts(file, name)
if pos:
all_positive.append(pos)
if neg:
all_negative.append(neg)
final_positive = "\n".join(all_positive) if all_positive else ""
final_negative = "\n".join(all_negative) if all_negative else ""
return (final_positive, final_negative)
except Exception as e:
error_msg = f"Error loading styles: {str(e)}"
logger.error(error_msg)
return (error_msg, "")
class RaykoServer:
@classmethod
def _sanitize_filename(cls, filename: str, allowed_folder: str) -> Optional[str]:
if not filename:
return None
safe_name = os.path.basename(filename.strip())
if not safe_name or not safe_name.lower().endswith('.csv'):
return None
target_path = os.path.join(allowed_folder, safe_name)
real_target = os.path.realpath(target_path)
real_base = os.path.realpath(allowed_folder)
if not real_target.startswith(real_base + os.sep) and real_target != real_base:
logger.warning(f"Path traversal attempt blocked: {filename} -> {real_target}")
return None
return safe_name
@classmethod
def setup_routes(cls):
try:
from aiohttp import web
import server
@server.PromptServer.instance.routes.get("/rayko_get_csv_files")
async def get_csv_files(request):
try:
files = RaykoStylesCSVLoader.get_available_style_files()
return web.json_response(files)
except Exception as e:
logger.error(f"Error getting CSV files: {e}")
return web.json_response({"error": str(e)}, status=500)
@server.PromptServer.instance.routes.post("/rayko_upload_csv_file")
async def upload_csv_file(request):
try:
reader = await request.multipart()
field = await reader.next()
if not field or field.name != 'file':
return web.json_response({'error': 'No file provided'}, status=400)
original_filename = field.filename
styles_folder = RaykoStylesCSVLoader.get_styles_folder_path()
os.makedirs(styles_folder, exist_ok=True)
safe_filename = cls._sanitize_filename(original_filename, styles_folder)
if not safe_filename:
return web.json_response({'error': 'Invalid or unsafe filename'}, status=400)
file_path = os.path.join(styles_folder, safe_filename)
try:
with open(file_path, 'wb') as f:
while True:
chunk = await field.read_chunk()
if not chunk:
break
f.write(chunk)
except Exception as write_err:
logger.error(f"Error writing file: {write_err}")
if os.path.exists(file_path):
os.remove(file_path)
return web.json_response({'error': 'Failed to save file'}, status=500)
return web.json_response({
'success': True,
'filename': safe_filename
})
except Exception as e:
logger.error(f"Error uploading file: {e}")
return web.json_response({'error': str(e)}, status=500)
@server.PromptServer.instance.routes.post("/rayko_get_styles_from_file")
async def get_styles_from_file(request):
try:
data = await request.json()
filename = data.get('filename')
if not filename:
return web.json_response({'error': 'No filename provided'}, status=400)
safe_filename = cls._sanitize_filename(filename, RaykoStylesCSVLoader.get_styles_folder_path())
if not safe_filename:
return web.json_response({'error': 'Invalid filename'}, status=400)
styles_folder = RaykoStylesCSVLoader.get_styles_folder_path()
file_path = os.path.join(styles_folder, safe_filename)
styles = RaykoStylesCSVLoader.load_styles_csv(file_path)
return web.json_response({'styles': list(styles.keys())})
except Exception as e:
logger.error(f"Error loading styles: {e}")
return web.json_response({'error': str(e)}, status=500)
@server.PromptServer.instance.routes.get("/rayko_get_favorites")
async def get_favorites(request):
try:
favorites = RaykoStylesCSVLoader.load_favorites()
return web.json_response(favorites)
except Exception as e:
logger.error(f"Error getting favorites: {e}")
return web.json_response({"error": str(e)}, status=500)
@server.PromptServer.instance.routes.post("/rayko_save_favorites")
async def save_favorites(request):
try:
data = await request.json()
if not isinstance(data, dict):
return web.json_response({'error': 'Invalid data format'}, status=400)
success = RaykoStylesCSVLoader.save_favorites(data)
if success:
return web.json_response({'success': True})
else:
return web.json_response({'error': 'Failed to save favorites'}, status=500)
except Exception as e:
logger.error(f"Error saving favorites: {e}")
return web.json_response({'error': str(e)}, status=500)
@server.PromptServer.instance.routes.get("/rayko_get_presets")
async def get_presets(request):
try:
presets = RaykoStylesCSVLoader.list_presets()
return web.json_response(presets)
except Exception as e:
logger.error(f"Error getting presets: {e}")
return web.json_response({"error": str(e)}, status=500)
@server.PromptServer.instance.routes.post("/rayko_save_preset")
async def save_preset(request):
try:
data = await request.json()
name = data.get("name", "").strip()
if not name:
return web.json_response({'error': 'Name required'}, status=400)
name = "".join(c for c in name if c.isalnum() or c in " _-").strip()
if not name:
return web.json_response({'error': 'Invalid name'}, status=400)
preset_data = {
"csv_file": data.get("csv_file", ""),
"styles": data.get("styles", [])
}
success = RaykoStylesCSVLoader.save_preset(name, preset_data)
if success:
return web.json_response({'success': True})
else:
return web.json_response({'error': 'Failed to save preset'}, status=500)
except Exception as e:
logger.error(f"Error saving preset: {e}")
return web.json_response({'error': str(e)}, status=500)
@server.PromptServer.instance.routes.post("/rayko_load_preset")
async def load_preset(request):
try:
data = await request.json()
name = data.get("name")
if not name:
return web.json_response({'error': 'Name required'}, status=400)
preset = RaykoStylesCSVLoader.load_preset(name)
if preset:
return web.json_response(preset)
else:
return web.json_response({'error': 'Preset not found'}, status=404)
except Exception as e:
logger.error(f"Error loading preset: {e}")
return web.json_response({'error': str(e)}, status=500)
@server.PromptServer.instance.routes.post("/rayko_delete_preset")
async def delete_preset(request):
try:
data = await request.json()
name = data.get("name")
if not name:
return web.json_response({'error': 'Name required'}, status=400)
success = RaykoStylesCSVLoader.delete_preset(name)
if success:
return web.json_response({'success': True})
else:
return web.json_response({'error': 'Preset not found'}, status=404)
except Exception as e:
logger.error(f"Error deleting preset: {e}")
return web.json_response({'error': str(e)}, status=500)
except Exception as e:
logger.error(f"Failed to register server routes: {e}")
try:
styles_folder = RaykoStylesCSVLoader.get_styles_folder_path()
os.makedirs(styles_folder, exist_ok=True)
except Exception as e:
logger.error(f"Failed to create styles folder: {e}")
try:
RaykoServer.setup_routes()
except Exception as e:
logger.error(f"Failed to setup server routes: {e}")
NODE_CLASS_MAPPINGS = {
"Rayko_Styles_CSV_Loader": RaykoStylesCSVLoader
}
NODE_DISPLAY_NAME_MAPPINGS = {
"Rayko_Styles_CSV_Loader": "🦊 RS Styles Loader"
}