mirror of
https://github.com/explosion/spaCy.git
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349 lines
13 KiB
Python
349 lines
13 KiB
Python
from typing import Dict, Any, List, Optional, Union
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import uuid
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from .templates import TPL_DEP_SVG, TPL_DEP_WORDS, TPL_DEP_WORDS_LEMMA, TPL_DEP_ARCS
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from .templates import TPL_ENT, TPL_ENT_RTL, TPL_FIGURE, TPL_TITLE, TPL_PAGE
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from .templates import TPL_ENTS, TPL_KB_LINK
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from ..util import minify_html, escape_html, registry
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from ..errors import Errors
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DEFAULT_LANG = "en"
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DEFAULT_DIR = "ltr"
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DEFAULT_ENTITY_COLOR = "#ddd"
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DEFAULT_LABEL_COLORS = {
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"ORG": "#7aecec",
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"PRODUCT": "#bfeeb7",
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"GPE": "#feca74",
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"LOC": "#ff9561",
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"PERSON": "#aa9cfc",
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"NORP": "#c887fb",
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"FAC": "#9cc9cc",
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"EVENT": "#ffeb80",
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"LAW": "#ff8197",
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"LANGUAGE": "#ff8197",
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"WORK_OF_ART": "#f0d0ff",
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"DATE": "#bfe1d9",
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"TIME": "#bfe1d9",
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"MONEY": "#e4e7d2",
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"QUANTITY": "#e4e7d2",
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"ORDINAL": "#e4e7d2",
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"CARDINAL": "#e4e7d2",
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"PERCENT": "#e4e7d2",
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}
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class DependencyRenderer:
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"""Render dependency parses as SVGs."""
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style = "dep"
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def __init__(self, options: Dict[str, Any] = {}) -> None:
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"""Initialise dependency renderer.
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options (dict): Visualiser-specific options (compact, word_spacing,
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arrow_spacing, arrow_width, arrow_stroke, distance, offset_x,
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color, bg, font)
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"""
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self.compact = options.get("compact", False)
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self.word_spacing = options.get("word_spacing", 45)
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self.arrow_spacing = options.get("arrow_spacing", 12 if self.compact else 20)
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self.arrow_width = options.get("arrow_width", 6 if self.compact else 10)
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self.arrow_stroke = options.get("arrow_stroke", 2)
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self.distance = options.get("distance", 150 if self.compact else 175)
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self.offset_x = options.get("offset_x", 50)
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self.color = options.get("color", "#000000")
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self.bg = options.get("bg", "#ffffff")
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self.font = options.get("font", "Arial")
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self.direction = DEFAULT_DIR
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self.lang = DEFAULT_LANG
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def render(
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self, parsed: List[Dict[str, Any]], page: bool = False, minify: bool = False
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) -> str:
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"""Render complete markup.
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parsed (list): Dependency parses to render.
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page (bool): Render parses wrapped as full HTML page.
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minify (bool): Minify HTML markup.
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RETURNS (str): Rendered SVG or HTML markup.
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"""
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# Create a random ID prefix to make sure parses don't receive the
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# same ID, even if they're identical
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id_prefix = uuid.uuid4().hex
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rendered = []
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for i, p in enumerate(parsed):
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if i == 0:
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settings = p.get("settings", {})
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self.direction = settings.get("direction", DEFAULT_DIR)
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self.lang = settings.get("lang", DEFAULT_LANG)
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render_id = f"{id_prefix}-{i}"
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svg = self.render_svg(render_id, p["words"], p["arcs"])
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rendered.append(svg)
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if page:
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content = "".join([TPL_FIGURE.format(content=svg) for svg in rendered])
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markup = TPL_PAGE.format(
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content=content, lang=self.lang, dir=self.direction
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)
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else:
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markup = "".join(rendered)
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if minify:
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return minify_html(markup)
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return markup
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def render_svg(
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self,
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render_id: Union[int, str],
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words: List[Dict[str, Any]],
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arcs: List[Dict[str, Any]],
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) -> str:
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"""Render SVG.
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render_id (Union[int, str]): Unique ID, typically index of document.
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words (list): Individual words and their tags.
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arcs (list): Individual arcs and their start, end, direction and label.
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RETURNS (str): Rendered SVG markup.
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"""
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self.levels = self.get_levels(arcs)
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self.highest_level = len(self.levels)
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self.offset_y = self.distance / 2 * self.highest_level + self.arrow_stroke
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self.width = self.offset_x + len(words) * self.distance
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self.height = self.offset_y + 3 * self.word_spacing
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self.id = render_id
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words_svg = [
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self.render_word(w["text"], w["tag"], w.get("lemma", None), i)
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for i, w in enumerate(words)
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]
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arcs_svg = [
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self.render_arrow(a["label"], a["start"], a["end"], a["dir"], i)
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for i, a in enumerate(arcs)
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]
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content = "".join(words_svg) + "".join(arcs_svg)
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return TPL_DEP_SVG.format(
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id=self.id,
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width=self.width,
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height=self.height,
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color=self.color,
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bg=self.bg,
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font=self.font,
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content=content,
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dir=self.direction,
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lang=self.lang,
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)
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def render_word(self, text: str, tag: str, lemma: str, i: int) -> str:
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"""Render individual word.
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text (str): Word text.
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tag (str): Part-of-speech tag.
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i (int): Unique ID, typically word index.
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RETURNS (str): Rendered SVG markup.
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"""
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y = self.offset_y + self.word_spacing
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x = self.offset_x + i * self.distance
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if self.direction == "rtl":
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x = self.width - x
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html_text = escape_html(text)
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if lemma is not None:
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return TPL_DEP_WORDS_LEMMA.format(
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text=html_text, tag=tag, lemma=lemma, x=x, y=y
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)
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return TPL_DEP_WORDS.format(text=html_text, tag=tag, x=x, y=y)
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def render_arrow(
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self, label: str, start: int, end: int, direction: str, i: int
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) -> str:
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"""Render individual arrow.
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label (str): Dependency label.
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start (int): Index of start word.
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end (int): Index of end word.
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direction (str): Arrow direction, 'left' or 'right'.
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i (int): Unique ID, typically arrow index.
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RETURNS (str): Rendered SVG markup.
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"""
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if start < 0 or end < 0:
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error_args = dict(start=start, end=end, label=label, dir=direction)
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raise ValueError(Errors.E157.format(**error_args))
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level = self.levels.index(end - start) + 1
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x_start = self.offset_x + start * self.distance + self.arrow_spacing
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if self.direction == "rtl":
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x_start = self.width - x_start
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y = self.offset_y
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x_end = (
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self.offset_x
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+ (end - start) * self.distance
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+ start * self.distance
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- self.arrow_spacing * (self.highest_level - level) / 4
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)
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if self.direction == "rtl":
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x_end = self.width - x_end
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y_curve = self.offset_y - level * self.distance / 2
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if self.compact:
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y_curve = self.offset_y - level * self.distance / 6
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if y_curve == 0 and len(self.levels) > 5:
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y_curve = -self.distance
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arrowhead = self.get_arrowhead(direction, x_start, y, x_end)
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arc = self.get_arc(x_start, y, y_curve, x_end)
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label_side = "right" if self.direction == "rtl" else "left"
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return TPL_DEP_ARCS.format(
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id=self.id,
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i=i,
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stroke=self.arrow_stroke,
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head=arrowhead,
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label=label,
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label_side=label_side,
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arc=arc,
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)
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def get_arc(self, x_start: int, y: int, y_curve: int, x_end: int) -> str:
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"""Render individual arc.
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x_start (int): X-coordinate of arrow start point.
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y (int): Y-coordinate of arrow start and end point.
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y_curve (int): Y-corrdinate of Cubic Bézier y_curve point.
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x_end (int): X-coordinate of arrow end point.
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RETURNS (str): Definition of the arc path ('d' attribute).
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"""
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template = "M{x},{y} C{x},{c} {e},{c} {e},{y}"
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if self.compact:
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template = "M{x},{y} {x},{c} {e},{c} {e},{y}"
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return template.format(x=x_start, y=y, c=y_curve, e=x_end)
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def get_arrowhead(self, direction: str, x: int, y: int, end: int) -> str:
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"""Render individual arrow head.
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direction (str): Arrow direction, 'left' or 'right'.
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x (int): X-coordinate of arrow start point.
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y (int): Y-coordinate of arrow start and end point.
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end (int): X-coordinate of arrow end point.
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RETURNS (str): Definition of the arrow head path ('d' attribute).
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"""
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if direction == "left":
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p1, p2, p3 = (x, x - self.arrow_width + 2, x + self.arrow_width - 2)
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else:
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p1, p2, p3 = (end, end + self.arrow_width - 2, end - self.arrow_width + 2)
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return f"M{p1},{y + 2} L{p2},{y - self.arrow_width} {p3},{y - self.arrow_width}"
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def get_levels(self, arcs: List[Dict[str, Any]]) -> List[int]:
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"""Calculate available arc height "levels".
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Used to calculate arrow heights dynamically and without wasting space.
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args (list): Individual arcs and their start, end, direction and label.
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RETURNS (list): Arc levels sorted from lowest to highest.
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"""
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levels = set(map(lambda arc: arc["end"] - arc["start"], arcs))
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return sorted(list(levels))
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class EntityRenderer:
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"""Render named entities as HTML."""
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style = "ent"
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def __init__(self, options: Dict[str, Any] = {}) -> None:
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"""Initialise dependency renderer.
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options (dict): Visualiser-specific options (colors, ents)
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"""
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colors = dict(DEFAULT_LABEL_COLORS)
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user_colors = registry.displacy_colors.get_all()
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for user_color in user_colors.values():
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if callable(user_color):
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# Since this comes from the function registry, we want to make
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# sure we support functions that *return* a dict of colors
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user_color = user_color()
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if not isinstance(user_color, dict):
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raise ValueError(Errors.E925.format(obj=type(user_color)))
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colors.update(user_color)
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colors.update(options.get("colors", {}))
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self.default_color = DEFAULT_ENTITY_COLOR
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self.colors = {label.upper(): color for label, color in colors.items()}
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self.ents = options.get("ents", None)
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if self.ents is not None:
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self.ents = [ent.upper() for ent in self.ents]
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self.direction = DEFAULT_DIR
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self.lang = DEFAULT_LANG
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template = options.get("template")
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if template:
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self.ent_template = template
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else:
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if self.direction == "rtl":
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self.ent_template = TPL_ENT_RTL
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else:
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self.ent_template = TPL_ENT
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def render(
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self, parsed: List[Dict[str, Any]], page: bool = False, minify: bool = False
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) -> str:
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"""Render complete markup.
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parsed (list): Dependency parses to render.
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page (bool): Render parses wrapped as full HTML page.
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minify (bool): Minify HTML markup.
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RETURNS (str): Rendered HTML markup.
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"""
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rendered = []
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for i, p in enumerate(parsed):
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if i == 0:
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settings = p.get("settings", {})
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self.direction = settings.get("direction", DEFAULT_DIR)
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self.lang = settings.get("lang", DEFAULT_LANG)
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rendered.append(self.render_ents(p["text"], p["ents"], p.get("title")))
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if page:
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docs = "".join([TPL_FIGURE.format(content=doc) for doc in rendered])
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markup = TPL_PAGE.format(content=docs, lang=self.lang, dir=self.direction)
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else:
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markup = "".join(rendered)
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if minify:
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return minify_html(markup)
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return markup
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def render_ents(
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self, text: str, spans: List[Dict[str, Any]], title: Optional[str]
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) -> str:
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"""Render entities in text.
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text (str): Original text.
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spans (list): Individual entity spans and their start, end, label, kb_id and kb_url.
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title (str / None): Document title set in Doc.user_data['title'].
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"""
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markup = ""
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offset = 0
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for span in spans:
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label = span["label"]
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start = span["start"]
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end = span["end"]
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kb_id = span.get("kb_id", "")
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kb_url = span.get("kb_url", "#")
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kb_link = TPL_KB_LINK.format(kb_id=kb_id, kb_url=kb_url) if kb_id else ""
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additional_params = span.get("params", {})
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entity = escape_html(text[start:end])
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fragments = text[offset:start].split("\n")
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for i, fragment in enumerate(fragments):
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markup += escape_html(fragment)
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if len(fragments) > 1 and i != len(fragments) - 1:
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markup += "</br>"
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if self.ents is None or label.upper() in self.ents:
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color = self.colors.get(label.upper(), self.default_color)
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ent_settings = {
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"label": label,
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"text": entity,
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"bg": color,
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"kb_link": kb_link,
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}
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ent_settings.update(additional_params)
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markup += self.ent_template.format(**ent_settings)
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else:
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markup += entity
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offset = end
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fragments = text[offset:].split("\n")
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for i, fragment in enumerate(fragments):
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markup += escape_html(fragment)
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if len(fragments) > 1 and i != len(fragments) - 1:
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markup += "</br>"
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markup = TPL_ENTS.format(content=markup, dir=self.direction)
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if title:
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markup = TPL_TITLE.format(title=title) + markup
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return markup
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