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Added class PromptsFromFileInvocation to prompt.py. A new PromptFromFile Custom node that reads prompts from a file one line per prompt and outputs them as a prompt collection. With inputs for filename, pre_prompt, post_prompt, start line number, and max_prompts

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skunkworxdark 2023-07-15 12:17:18 +01:00 committed by Kent Keirsey
parent ed88e72412
commit 956011066d
1 changed files with 33 additions and 0 deletions
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33
invokeai/app/invocations/prompt.py
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@ -1,5 +1,6 @@
from typing import Literal
import numpy as np
from pydantic.fields import Field
from .baseinvocation import BaseInvocation, BaseInvocationOutput, InvocationContext
@ -55,3 +56,35 @@ class DynamicPromptInvocation(BaseInvocation):
prompts = generator.generate(self.prompt, num_images=self.max_prompts)
return PromptCollectionOutput(prompt_collection=prompts, count=len(prompts))
class PromptsFromFileInvocation(BaseInvocation):
'''Loads prompts from a text file'''
# fmt: off
type: Literal['prompt_from_file'] = 'prompt_from_file'
# Inputs
filename: str = Field(default=None, description="Filename of prompt text file")
pre_prompt: str = Field(default=None, description="Add to start of prompt")
post_prompt: str = Field(default=None, description="Add to end of prompt")
start_line: int = Field(default=1, ge=1, description="Line in the file start start from")
max_prompts: int = Field(default=0, ge=0, description="Max lines to read from file (0=all)")
#fmt: on
def promptsFromFile(self, filename: str, pre_prompt: str, post_prompt: str, start_line: int, max_prompts:int):
prompts = []
start_line -= 1
end_line = start_line + max_prompts
if max_prompts <= 0:
end_line = np.iinfo(np.int32).max
with open(filename) as f:
for i, line in enumerate(f):
if i >= start_line and i < end_line:
prompts.append(pre_prompt + line.strip() + post_prompt)
if i >= end_line:
break
return prompts
def invoke(self, context: InvocationContext) -> PromptCollectionOutput:
prompts = self.promptsFromFile(self.filename, self.pre_prompt, self.post_prompt, self.start_line, self.max_prompts)
return PromptCollectionOutput(prompt_collection=prompts, count=len(prompts))