mirror of
https://github.com/jsvine/pdfplumber.git
synced 2026-08-29 16:40:24 +08:00
Jeremy Singer-Vine
87b947f8f6
Per discussion at https://github.com/jsvine/pdfplumber/discussions/346 and input from @ramcdona, this commit changes pdfplumber's behavior regarding floating point numbers. Specifically, it removes all conversion of floats to Decimal objects. This brings several advantages: - Increased precision (where applicable) - Decreased code complexity - Increased performance (~10% speedup on test suite) - Increased fidelity to `pdfminer.six` output These seem to outweigh the disadvantages: - Some tests break (but have been easily fixed) due to increased precision and/or floating point arithmetic artifacts - Some users' scripts may also break, if they depend on strict equality testing, though these *should* also be easily fixable Because some form of automatic rounding may still be desirable for the pdfplumber CLI utility, the conversion methods (.to_csv, .to_json) have been adjusted to accept a `precision` argument.
97 lines
2.7 KiB
Python
97 lines
2.7 KiB
Python
#!/usr/bin/env python
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import unittest
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import pdfplumber
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from subprocess import Popen, PIPE
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from io import StringIO
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import json
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import sys
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import os
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import logging
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logging.disable(logging.ERROR)
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HERE = os.path.abspath(os.path.dirname(__file__))
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def run(cmd):
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return Popen(cmd, stdout=PIPE).communicate()[0]
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class Test(unittest.TestCase):
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@classmethod
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def setup_class(self):
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self.path = os.path.join(HERE, "pdfs/pdffill-demo.pdf")
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self.pdf = pdfplumber.open(self.path, pages=[1, 2, 5])
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@classmethod
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def teardown_class(self):
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self.pdf.close()
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def test_json(self):
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c = json.loads(self.pdf.to_json())
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assert (
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c["pages"][0]["rects"][0]["bottom"] == self.pdf.pages[0].rects[0]["bottom"]
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)
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def test_json_all_types(self):
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c = json.loads(self.pdf.to_json(types=None))
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found_types = c["pages"][0].keys()
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assert "curves" in found_types
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assert "chars" in found_types
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assert "lines" in found_types
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assert "rects" in found_types
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assert "images" in found_types
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def test_single_pages(self):
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c = json.loads(self.pdf.pages[0].to_json())
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assert c["rects"][0]["bottom"] == self.pdf.pages[0].rects[0]["bottom"]
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def test_additional_attr_types(self):
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path = os.path.join(HERE, "pdfs/issue-67-example.pdf")
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with pdfplumber.open(path, pages=[1]) as pdf:
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c = json.loads(pdf.to_json())
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assert len(c["pages"][0]["images"])
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def test_csv(self):
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c = self.pdf.to_csv(precision=3)
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assert c.split("\r\n")[9] == (
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"char,1,45.83,58.826,656.82,674.82,117.18,117.18,135.18,12.996,"
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'18.0,12.996,,,,,,TimesNewRomanPSMT,,,,"(0, 0, 0)",,,18.0,,,,,Y,,1,'
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)
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io = StringIO()
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self.pdf.to_csv(io, precision=3)
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io.seek(0)
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c_from_io = io.read()
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assert c == c_from_io
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def test_csv_all_types(self):
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c = self.pdf.to_csv(types=None)
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assert c.split("\r\n")[1].split(",")[0] == "line"
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def test_cli(self):
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res = run(
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[
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sys.executable,
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"-m",
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"pdfplumber.cli",
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self.path,
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"--format",
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"json",
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"--pages",
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"1-2",
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"5",
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"--indent",
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"2",
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]
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)
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c = json.loads(res)
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assert c["pages"][0]["page_number"] == 1
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assert c["pages"][1]["page_number"] == 2
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assert c["pages"][2]["page_number"] == 5
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assert c["pages"][0]["rects"][0]["bottom"] == float(
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self.pdf.pages[0].rects[0]["bottom"]
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)
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