mirror of
https://github.com/oobabooga/text-generation-webui.git
synced 2024-11-23 00:18:20 +01:00
120 lines
4.2 KiB
Python
120 lines
4.2 KiB
Python
import traceback
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from functools import partial
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import gradio as gr
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import extensions
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import modules.shared as shared
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state = {}
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available_extensions = []
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setup_called = set()
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def load_extensions():
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global state, setup_called
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for i, name in enumerate(shared.args.extensions):
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if name in available_extensions:
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if name != 'api':
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print(f'Loading the extension "{name}"... ', end='')
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try:
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exec(f"import extensions.{name}.script")
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extension = getattr(extensions, name).script
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if extension not in setup_called and hasattr(extension, "setup"):
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setup_called.add(extension)
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extension.setup()
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state[name] = [True, i]
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if name != 'api':
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print('Ok.')
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except:
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if name != 'api':
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print('Fail.')
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traceback.print_exc()
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# This iterator returns the extensions in the order specified in the command-line
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def iterator():
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for name in sorted(state, key=lambda x: state[x][1]):
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if state[name][0]:
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yield getattr(extensions, name).script, name
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# Extension functions that map string -> string
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def _apply_string_extensions(function_name, text):
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for extension, _ in iterator():
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if hasattr(extension, function_name):
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text = getattr(extension, function_name)(text)
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return text
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# Input hijack of extensions
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def _apply_input_hijack(text, visible_text):
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for extension, _ in iterator():
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if hasattr(extension, 'input_hijack') and extension.input_hijack['state']:
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extension.input_hijack['state'] = False
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if callable(extension.input_hijack['value']):
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text, visible_text = extension.input_hijack['value'](text, visible_text)
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else:
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text, visible_text = extension.input_hijack['value']
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return text, visible_text
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# custom_generate_chat_prompt handling
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def _apply_custom_generate_chat_prompt(text, state, **kwargs):
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custom_generate_chat_prompt = None
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for extension, _ in iterator():
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if custom_generate_chat_prompt is None and hasattr(extension, 'custom_generate_chat_prompt'):
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custom_generate_chat_prompt = extension.custom_generate_chat_prompt
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if custom_generate_chat_prompt is not None:
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return custom_generate_chat_prompt(text, state, **kwargs)
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return None
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# Extension functions that override the default tokenizer output
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def _apply_tokenizer_extensions(function_name, state, prompt, input_ids, input_embeds):
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for extension, _ in iterator():
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if hasattr(extension, function_name):
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prompt, input_ids, input_embeds = getattr(extension, function_name)(state, prompt, input_ids, input_embeds)
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return prompt, input_ids, input_embeds
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EXTENSION_MAP = {
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"input": partial(_apply_string_extensions, "input_modifier"),
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"output": partial(_apply_string_extensions, "output_modifier"),
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"bot_prefix": partial(_apply_string_extensions, "bot_prefix_modifier"),
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"tokenizer": partial(_apply_tokenizer_extensions, "tokenizer_modifier"),
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"input_hijack": _apply_input_hijack,
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"custom_generate_chat_prompt": _apply_custom_generate_chat_prompt
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}
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def apply_extensions(typ, *args, **kwargs):
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if typ not in EXTENSION_MAP:
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raise ValueError(f"Invalid extension type {typ}")
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return EXTENSION_MAP[typ](*args, **kwargs)
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def create_extensions_block():
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global setup_called
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# Updating the default values
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for extension, name in iterator():
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if hasattr(extension, 'params'):
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for param in extension.params:
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_id = f"{name}-{param}"
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if _id in shared.settings:
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extension.params[param] = shared.settings[_id]
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should_display_ui = False
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for extension, name in iterator():
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if hasattr(extension, "ui"):
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should_display_ui = True
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# Creating the extension ui elements
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if should_display_ui:
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with gr.Column(elem_id="extensions"):
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for extension, name in iterator():
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gr.Markdown(f"\n### {name}")
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if hasattr(extension, "ui"):
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extension.ui()
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