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feat: cleaning brick for normalizing bytes string output (#481)

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* add cleaning brick for emojis

* changelog and versoin

* docs for bytes_string_to_string

* different test for bytes_string_to_string
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Matt Robinson 2023-04-13 15:39:08 -04:00 committed by GitHub
parent 9c1c6a13f6
commit 137b4b9a2e
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6 changed files with 54 additions and 3 deletions
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4
CHANGELOG.md
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@ -1,4 +1,4 @@
## 0.5.13-dev4
## 0.5.13-dev5
### Enhancements
@ -6,6 +6,8 @@
### Features
* `bytes_string_to_string` cleaning brick for bytes string output.
### Fixes
* unstructured-documents encode xml string if document_tree is `None` in `_read_xml`.

31
docs/source/bricks.rst
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@ -801,6 +801,37 @@ Examples:
# Returns "Look at me, I'm flying!"
extract_text_after(text, r"SPEAKER \d{1}:")
``bytes_string_to_string``
---------------------------
Converts an output string that looks like a byte string to a string using the specified encoding. This
happens sometimes in ``partition_html`` when there is a character like an emoji that isn't expected
by the HTML parser. In that case, the encoded bytes get processed.
Examples:
.. code:: python
from unstructured.cleaners.core import bytes_string_to_string
text = "Hello ð\x9f\x98\x80"
# The output should be "Hello 😀"
bytes_string_to_string(text, encoding="utf-8")
.. code:: python
from unstructured.cleaners.core import bytes_string_to_string
from unstructured.partition.html import partition_html
text = """\n<html charset="utf-8"><p>Hello 😀</p></html>"""
elements = partition_html(text=text)
elements[0].apply(bytes_string_to_string)
# The output should be "Hello 😀"
elements[0].text
``extract_email_address``
--------------------------

5
test_unstructured/cleaners/test_core.py
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@ -240,3 +240,8 @@ def test_clean(text, extra_whitespace, dashes, bullets, lowercase, trailing_punc
)
== expected
)
def test_bytes_string_to_string():
text = "\xe6\xaf\x8f\xe6\x97\xa5\xe6\x96\xb0\xe9\x97\xbb"
assert core.bytes_string_to_string(text, "utf-8") == "每日新闻"

8
test_unstructured/partition/test_html_partition.py
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@ -6,7 +6,7 @@ import pytest
import requests
from requests.models import Response
from unstructured.documents.elements import PageBreak
from unstructured.documents.elements import PageBreak, Title
from unstructured.partition.html import partition_html
DIRECTORY = pathlib.Path(__file__).parent.resolve()
@ -155,3 +155,9 @@ def test_partition_html_processes_chinese_chracters():
html_text = "<html><div><p>每日新闻</p></div></html>"
elements = partition_html(text=html_text)
assert elements[0].text == "每日新闻"
def test_emoji_appears_with_emoji_utf8_code():
html_text = """\n<html charset="utf-8"><p>Hello &#128512;</p></html>"""
elements = partition_html(text=html_text)
assert elements[0] == Title("Hello 😀")

2
unstructured/__version__.py
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@ -1 +1 @@
__version__ = "0.5.13-dev4" # pragma: no cover
__version__ = "0.5.13-dev5" # pragma: no cover

7
unstructured/cleaners/core.py
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@ -238,3 +238,10 @@ def clean(
cleaned_text = clean_extra_whitespace(cleaned_text) if extra_whitespace else cleaned_text
cleaned_text = clean_bullets(cleaned_text) if bullets else cleaned_text
return cleaned_text.strip()
def bytes_string_to_string(text: str, encoding: str = "utf-8"):
"""Converts a string representation of a byte string to a regular string using the
specified encoding."""
text_bytes = bytes([ord(char) for char in text])
return text_bytes.decode(encoding)