137 lines
4.6 KiB
Python
137 lines
4.6 KiB
Python
import csv
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import os
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import os.path
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import re
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import typing
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import shutil
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class PromptStyle(typing.NamedTuple):
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name: str
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prompt: str
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negative_prompt: str
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def merge_prompts(style_prompt: str, prompt: str) -> str:
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if "{prompt}" in style_prompt:
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res = style_prompt.replace("{prompt}", prompt)
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else:
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parts = filter(None, (prompt.strip(), style_prompt.strip()))
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res = ", ".join(parts)
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return res
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def apply_styles_to_prompt(prompt, styles):
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for style in styles:
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prompt = merge_prompts(style, prompt)
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return prompt
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re_spaces = re.compile(" +")
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def extract_style_text_from_prompt(style_text, prompt):
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stripped_prompt = re.sub(re_spaces, " ", prompt.strip())
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stripped_style_text = re.sub(re_spaces, " ", style_text.strip())
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if "{prompt}" in stripped_style_text:
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left, right = stripped_style_text.split("{prompt}", 2)
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if stripped_prompt.startswith(left) and stripped_prompt.endswith(right):
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prompt = stripped_prompt[len(left):len(stripped_prompt)-len(right)]
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return True, prompt
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else:
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if stripped_prompt.endswith(stripped_style_text):
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prompt = stripped_prompt[:len(stripped_prompt)-len(stripped_style_text)]
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if prompt.endswith(', '):
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prompt = prompt[:-2]
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return True, prompt
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return False, prompt
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def extract_style_from_prompts(style: PromptStyle, prompt, negative_prompt):
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if not style.prompt and not style.negative_prompt:
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return False, prompt, negative_prompt
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match_positive, extracted_positive = extract_style_text_from_prompt(style.prompt, prompt)
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if not match_positive:
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return False, prompt, negative_prompt
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match_negative, extracted_negative = extract_style_text_from_prompt(style.negative_prompt, negative_prompt)
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if not match_negative:
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return False, prompt, negative_prompt
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return True, extracted_positive, extracted_negative
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class StyleDatabase:
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def __init__(self, path: str):
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self.no_style = PromptStyle("None", "", "")
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self.styles = {}
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self.path = path
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self.reload()
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def reload(self):
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self.styles.clear()
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if not os.path.exists(self.path):
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return
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with open(self.path, "r", encoding="utf-8-sig", newline='') as file:
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reader = csv.DictReader(file, skipinitialspace=True)
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for row in reader:
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# Support loading old CSV format with "name, text"-columns
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prompt = row["prompt"] if "prompt" in row else row["text"]
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negative_prompt = row.get("negative_prompt", "")
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self.styles[row["name"]] = PromptStyle(row["name"], prompt, negative_prompt)
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def get_style_prompts(self, styles):
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return [self.styles.get(x, self.no_style).prompt for x in styles]
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def get_negative_style_prompts(self, styles):
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return [self.styles.get(x, self.no_style).negative_prompt for x in styles]
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def apply_styles_to_prompt(self, prompt, styles):
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return apply_styles_to_prompt(prompt, [self.styles.get(x, self.no_style).prompt for x in styles])
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def apply_negative_styles_to_prompt(self, prompt, styles):
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return apply_styles_to_prompt(prompt, [self.styles.get(x, self.no_style).negative_prompt for x in styles])
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def save_styles(self, path: str) -> None:
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# Always keep a backup file around
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if os.path.exists(path):
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shutil.copy(path, f"{path}.bak")
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with open(path, "w", encoding="utf-8-sig", newline='') as file:
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writer = csv.DictWriter(file, fieldnames=PromptStyle._fields)
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writer.writeheader()
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writer.writerows(style._asdict() for k, style in self.styles.items())
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def extract_styles_from_prompt(self, prompt, negative_prompt):
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extracted = []
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applicable_styles = list(self.styles.values())
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while True:
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found_style = None
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for style in applicable_styles:
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is_match, new_prompt, new_neg_prompt = extract_style_from_prompts(style, prompt, negative_prompt)
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if is_match:
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found_style = style
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prompt = new_prompt
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negative_prompt = new_neg_prompt
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break
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if not found_style:
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break
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applicable_styles.remove(found_style)
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extracted.append(found_style.name)
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return list(reversed(extracted)), prompt, negative_prompt
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