Vito Sansevero
0a46420385
_TEXT_KEY matched input names such as text_negative, so a styler node feeding a sampler's positive input pulled its negative PromptManager node into the positive trace. Input names matching (^|_)neg(ative)?($|_) are now skipped (new follows_input helper).
204 lines
7.5 KiB
Python
204 lines
7.5 KiB
Python
"""Find which PromptManager nodes feed a sampler's positive input in a ComfyUI graph.
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Works on the API-format prompt graph ({node_id: {"class_type", "inputs"}}) that
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ComfyUI queues and embeds in saved images. Usage counting and image linking use it
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so that negative-prompt PromptManager nodes never count as "the prompt" of a run.
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Pure functions with no ComfyUI imports, so they are unit-testable. Mirrors the
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link-tracing rules of web/js/comfy-metadata.js.
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"""
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import re
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from typing import Any, Dict, List, Optional
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PROMPT_MANAGER_TYPES = frozenset({"PromptManager", "PromptManagerText"})
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# Upper bound on nodes expanded per graph; queued and embedded graphs are untrusted
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MAX_VISITS = 500
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# Inputs that carry positive conditioning or prompt text towards a sampler
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_CONDITIONING_KEY = re.compile(r"^conditioning(_\w+)?$")
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_TEXT_KEY = re.compile(r"^(text|string|prompt)(_?[a-z0-9]+)?$", re.IGNORECASE)
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# Input names that carry a negative prompt (text_negative, neg_text, negative_prompt)
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_NEGATIVE_KEY = re.compile(r"(^|_)neg(ative)?($|_)", re.IGNORECASE)
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def follows_input(key: Any) -> bool:
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"""Whether an input name carries positive conditioning or prompt text."""
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if not isinstance(key, str) or _NEGATIVE_KEY.search(key):
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return False
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return key == "positive" or bool(
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_CONDITIONING_KEY.match(key) or _TEXT_KEY.match(key)
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)
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def _is_link(value: Any) -> bool:
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return (
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isinstance(value, (list, tuple))
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and len(value) == 2
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and isinstance(value[0], (str, int))
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and isinstance(value[1], int)
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)
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def _inputs(node: Any) -> Dict[str, Any]:
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inputs = node.get("inputs") if isinstance(node, dict) else None
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return inputs if isinstance(inputs, dict) else {}
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def _positive_roots(graph: Dict[str, Any]) -> List[Any]:
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"""Links into samplers' positive inputs (KSampler, CFGGuider, BasicGuider, ...).
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A sampler is a node taking a model plus positive/negative conditioning, or a
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guider taking a model plus conditioning. Nodes named like a sampler also count
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without a model link, so a negative-only graph is never mistaken for one with
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no sampler at all.
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"""
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roots = []
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for node in graph.values():
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if not isinstance(node, dict):
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continue
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inputs = _inputs(node)
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class_name = str(node.get("class_type", "")).lower()
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has_model = _is_link(inputs.get("model"))
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if _is_link(inputs.get("positive")) and _is_link(inputs.get("negative")):
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if has_model or "sampler" in class_name:
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roots.append(inputs["positive"])
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elif has_model and _is_link(inputs.get("conditioning")):
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if "guider" in class_name:
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roots.append(inputs["conditioning"])
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return roots
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def _upstream_links(inputs: Dict[str, Any]) -> List[Any]:
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"""Inputs to follow from a pass-through or encoder node, never `negative`."""
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links = []
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for key, value in inputs.items():
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if not _is_link(value):
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continue
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if follows_input(key):
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links.append(value)
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return links
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def has_sampler(graph: Any) -> bool:
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"""Whether the graph contains a node recognised as a sampler or guider."""
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return isinstance(graph, dict) and bool(_positive_roots(graph))
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def positive_prompt_nodes(graph: Any) -> List[str]:
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"""Ids of PromptManager/PromptManagerText nodes that feed a positive input.
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Ordered by discovery, each id once. Malformed graphs yield an empty list.
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"""
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if not isinstance(graph, dict):
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return []
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found: List[str] = []
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seen = set()
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stack = list(reversed(_positive_roots(graph)))
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while stack and len(seen) < MAX_VISITS:
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node_id = str(stack.pop()[0])
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if node_id in seen:
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continue
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seen.add(node_id)
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node = graph.get(node_id)
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if not isinstance(node, dict):
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continue
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if node.get("class_type") in PROMPT_MANAGER_TYPES:
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found.append(node_id)
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continue
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stack.extend(reversed(_upstream_links(_inputs(node))))
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return found
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def run_prompt_nodes(graph: Any) -> List[str]:
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"""Prompt nodes that represent a run: the positive ones, if any can be found.
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When the graph has no recognisable sampler (an unrecognised custom sampler,
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say), every PromptManager node counts, as before 3.2.4, so an exotic workflow
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never silently loses usage counting or image linking. When a sampler exists
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and no PromptManager node feeds its positive input, nothing counts: the only
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PromptManager nodes are negative prompts.
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"""
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positive = positive_prompt_nodes(graph)
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if positive or not isinstance(graph, dict) or has_sampler(graph):
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return positive
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return [
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str(node_id)
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for node_id, node in graph.items()
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if isinstance(node, dict) and node.get("class_type") in PROMPT_MANAGER_TYPES
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]
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def _join_text_inputs(
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inputs: Dict[str, Any], keys: List[str], resolve
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) -> Optional[str]:
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"""WAS-style join: resolve each key, optionally strip, skip empty, join by delimiter."""
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delimiter = inputs.get("delimiter", " ")
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if not isinstance(delimiter, str):
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return None
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clean = str(inputs.get("clean_whitespace", "true")).lower() == "true"
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parts = []
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for key in keys:
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value = resolve(inputs.get(key, ""))
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if value is None:
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return None
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value = value.strip() if clean else value
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if value:
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parts.append(value)
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return delimiter.join(parts)
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def _resolve_string_node(
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class_type: str, inputs: Dict[str, Any], resolve
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) -> Optional[str]:
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"""Output of a known pure string node, or None when the type isn't known."""
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if class_type in ("PrimitiveString", "PrimitiveStringMultiline"):
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return resolve(inputs.get("value"))
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if class_type in ("ShowText|pysssss", "Text Multiline", "String Literal"):
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return resolve(inputs.get("text", inputs.get("string")))
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if class_type == "StringConcatenate":
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a, b = resolve(inputs.get("string_a", "")), resolve(inputs.get("string_b", ""))
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delimiter = inputs.get("delimiter", "")
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if a is None or b is None or not isinstance(delimiter, str):
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return None
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return f"{a}{delimiter}{b}"
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if class_type == "Text Concatenate":
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keys = sorted(k for k in inputs if re.fullmatch(r"text_[a-z]", k))
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return _join_text_inputs(inputs, keys, resolve)
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return None
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def resolve_text(graph: Any, node_id: str) -> Optional[str]:
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"""A prompt node's `text` as it will be at run time, if knowable from the graph.
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Typed text, or text produced by known pure string nodes (core primitives and
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StringConcatenate, WAS Text Concatenate/Multiline, pysssss ShowText). Anything
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else, including PromptSearchList batches, returns None rather than a guess.
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Callers compare the result with the text the node actually received.
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"""
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if not isinstance(graph, dict):
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return None
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seen = set()
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def resolve(value: Any) -> Optional[str]:
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if isinstance(value, str):
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return value
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if not _is_link(value) or len(seen) >= MAX_VISITS:
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return None
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source_id = str(value[0])
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if source_id in seen:
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return None
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seen.add(source_id)
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source = graph.get(source_id)
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if not isinstance(source, dict):
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return None
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return _resolve_string_node(
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str(source.get("class_type", "")), _inputs(source), resolve
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)
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seen.add(str(node_id))
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text = resolve(_inputs(graph.get(str(node_id))).get("text"))
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return text.strip() if isinstance(text, str) and text.strip() else None
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