mirror of
https://github.com/invoke-ai/InvokeAI
synced 2024-08-30 20:32:17 +00:00
77 lines
2.4 KiB
Python
77 lines
2.4 KiB
Python
import base64
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import io
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import os
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import re
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import unicodedata
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from pathlib import Path
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from PIL import Image
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def slugify(value: str, allow_unicode: bool = False) -> str:
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"""
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Convert to ASCII if 'allow_unicode' is False. Convert spaces or repeated
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dashes to single dashes. Remove characters that aren't alphanumerics,
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underscores, or hyphens. Replace slashes with underscores.
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Convert to lowercase. Also strip leading and
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trailing whitespace, dashes, and underscores.
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Adapted from Django: https://github.com/django/django/blob/main/django/utils/text.py
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"""
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value = str(value)
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if allow_unicode:
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value = unicodedata.normalize("NFKC", value)
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else:
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value = unicodedata.normalize("NFKD", value).encode("ascii", "ignore").decode("ascii")
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value = re.sub(r"[/]", "_", value.lower())
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value = re.sub(r"[^.\w\s-]", "", value.lower())
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return re.sub(r"[-\s]+", "-", value).strip("-_")
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def safe_filename(directory: Path, value: str) -> str:
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"""Make a string safe to use as a filename."""
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escaped_string = slugify(value)
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max_name_length = os.pathconf(directory, "PC_NAME_MAX") if hasattr(os, "pathconf") else 256
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return escaped_string[len(escaped_string) - max_name_length :]
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def directory_size(directory: Path) -> int:
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"""
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Return the aggregate size of all files in a directory (bytes).
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"""
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sum = 0
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for root, dirs, files in os.walk(directory):
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for f in files:
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sum += Path(root, f).stat().st_size
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for d in dirs:
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sum += Path(root, d).stat().st_size
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return sum
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def image_to_dataURL(image: Image.Image, image_format: str = "PNG") -> str:
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"""
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Converts an image into a base64 image dataURL.
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"""
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buffered = io.BytesIO()
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image.save(buffered, format=image_format)
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mime_type = Image.MIME.get(image_format.upper(), "image/" + image_format.lower())
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image_base64 = f"data:{mime_type};base64," + base64.b64encode(buffered.getvalue()).decode("UTF-8")
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return image_base64
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class Chdir(object):
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"""Context manager to chdir to desired directory and change back after context exits:
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Args:
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path (Path): The path to the cwd
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"""
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def __init__(self, path: Path):
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self.path = path
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self.original = Path().absolute()
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def __enter__(self):
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os.chdir(self.path)
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def __exit__(self, *args):
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os.chdir(self.original)
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