mirror of
https://github.com/jsvine/pdfplumber.git
synced 2026-08-31 01:20:24 +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.
286 lines
8.1 KiB
Python
286 lines
8.1 KiB
Python
#!/usr/bin/env python
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import unittest
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import pytest
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import pdfplumber
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from pdfplumber import utils
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from pdfminer.pdfparser import PDFObjRef
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from pdfminer.psparser import PSLiteral
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from itertools import groupby
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from operator import itemgetter
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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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class Test(unittest.TestCase):
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@classmethod
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def setup_class(self):
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path = os.path.join(HERE, "pdfs/pdffill-demo.pdf")
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self.pdf = pdfplumber.open(path)
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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_cluster_list(self):
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a = [1, 2, 3, 4]
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assert utils.cluster_list(a) == [[x] for x in a]
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assert utils.cluster_list(a, tolerance=1) == [a]
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a = [1, 2, 5, 6]
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assert utils.cluster_list(a, tolerance=1) == [[1, 2], [5, 6]]
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def test_cluster_objects(self):
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a = ["a", "ab", "abc", "b"]
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assert utils.cluster_objects(a, len, 0) == [["a", "b"], ["ab"], ["abc"]]
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def test_resolve(self):
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annot = self.pdf.annots[0]
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annot_ad0 = utils.resolve(annot["data"]["A"]["D"][0])
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assert annot_ad0["MediaBox"] == [0, 0, 612, 792]
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assert utils.resolve(1) == 1
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def test_resolve_all(self):
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info = self.pdf.doc.xrefs[0].trailer["Info"]
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assert type(info) == PDFObjRef
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a = [{"info": info}]
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a_res = utils.resolve_all(a)
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assert a_res[0]["info"]["Producer"] == self.pdf.doc.info[0]["Producer"]
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def test_decode_psl_list(self):
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a = [PSLiteral("test"), "test_2"]
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assert utils.decode_psl_list(a) == ["test", "test_2"]
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def test_extract_words(self):
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path = os.path.join(HERE, "pdfs/issue-192-example.pdf")
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with pdfplumber.open(path) as pdf:
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p = pdf.pages[0]
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words = p.extract_words(vertical_ttb=False)
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words_attr = p.extract_words(vertical_ttb=False, extra_attrs=["size"])
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words_w_spaces = p.extract_words(vertical_ttb=False, keep_blank_chars=True)
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words_rtl = p.extract_words(horizontal_ltr=False)
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assert words[0]["text"] == "Agaaaaa:"
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assert words[0]["direction"] == 1
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assert "size" not in words[0]
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assert round(words_attr[0]["size"], 2) == 9.96
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assert words_w_spaces[0]["text"] == "Agaaaaa: AAAA"
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vertical = [w for w in words if w["upright"] == 0]
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assert vertical[0]["text"] == "Aaaaaabag8"
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assert vertical[0]["direction"] == -1
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assert words_rtl[1]["text"] == "baaabaaA/AAA"
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assert words_rtl[1]["direction"] == -1
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def test_bad_word_extraction_settings(self):
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with pytest.raises(ValueError):
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self.pdf.pages[0].extract_words(not_real_param=True)
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def test_text_flow(self):
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path = os.path.join(HERE, "pdfs/federal-register-2020-17221.pdf")
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def words_to_text(words):
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grouped = groupby(words, key=itemgetter("top"))
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lines = [" ".join(word["text"] for word in grp) for top, grp in grouped]
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return "\n".join(lines)
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with pdfplumber.open(path) as pdf:
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p0 = pdf.pages[0]
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using_flow = p0.extract_words(use_text_flow=True)
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not_using_flow = p0.extract_words()
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target_text = (
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"The FAA proposes to\n"
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"supersede Airworthiness Directive (AD)\n"
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"2018–23–51, which applies to all The\n"
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"Boeing Company Model 737–8 and 737–\n"
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"9 (737 MAX) airplanes. Since AD 2018–\n"
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)
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assert target_text in words_to_text(using_flow)
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assert target_text not in words_to_text(not_using_flow)
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def test_extract_text(self):
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text = self.pdf.pages[0].extract_text()
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goal_lines = [
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"First Page Previous Page Next Page Last Page",
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"Print",
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"PDFill: PDF Drawing",
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"You can open a PDF or create a blank PDF by PDFill.",
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"Online Help",
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"Here are the PDF drawings created by PDFill",
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"Please save into a new PDF to see the effect!",
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"Goto Page 2: Line Tool",
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"Goto Page 3: Arrow Tool",
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"Goto Page 4: Tool for Rectangle, Square and Rounded Corner",
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"Goto Page 5: Tool for Circle, Ellipse, Arc, Pie",
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"Goto Page 6: Tool for Basic Shapes",
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"Goto Page 7: Tool for Curves",
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"Here are the tools to change line width, style, arrow style and colors",
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]
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goal = "\n".join(goal_lines)
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assert text == goal
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assert self.pdf.pages[0].crop((0, 0, 1, 1)).extract_text() is None
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def test_intersects_bbox(self):
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objs = [
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# Is same as bbox
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{
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"x0": 0,
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"top": 0,
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"x1": 20,
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"bottom": 20,
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},
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# Inside bbox
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{
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"x0": 10,
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"top": 10,
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"x1": 15,
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"bottom": 15,
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},
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# Overlaps bbox
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{
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"x0": 10,
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"top": 10,
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"x1": 30,
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"bottom": 30,
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},
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# Touching on one side
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{
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"x0": 20,
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"top": 0,
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"x1": 40,
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"bottom": 20,
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},
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# Touching on one corner
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{
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"x0": 20,
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"top": 20,
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"x1": 40,
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"bottom": 40,
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},
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# Fully outside
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{
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"x0": 21,
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"top": 21,
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"x1": 40,
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"bottom": 40,
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},
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]
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bbox = utils.obj_to_bbox(objs[0])
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assert utils.intersects_bbox(objs, bbox) == objs[:4]
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def test_resize_object(self):
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obj = {
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"x0": 5,
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"x1": 10,
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"top": 20,
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"bottom": 30,
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"width": 5,
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"height": 10,
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"doctop": 120,
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"y0": 40,
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"y1": 50,
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}
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assert utils.resize_object(obj, "x0", 0) == {
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"x0": 0,
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"x1": 10,
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"top": 20,
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"doctop": 120,
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"bottom": 30,
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"width": 10,
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"height": 10,
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"y0": 40,
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"y1": 50,
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}
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assert utils.resize_object(obj, "x1", 50) == {
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"x0": 5,
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"x1": 50,
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"top": 20,
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"doctop": 120,
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"bottom": 30,
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"width": 45,
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"height": 10,
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"y0": 40,
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"y1": 50,
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}
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assert utils.resize_object(obj, "top", 0) == {
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"x0": 5,
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"x1": 10,
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"top": 0,
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"doctop": 100,
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"bottom": 30,
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"height": 30,
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"width": 5,
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"y0": 40,
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"y1": 70,
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}
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assert utils.resize_object(obj, "bottom", 40) == {
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"x0": 5,
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"x1": 10,
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"top": 20,
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"doctop": 120,
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"bottom": 40,
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"height": 20,
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"width": 5,
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"y0": 30,
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"y1": 50,
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}
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def test_move_object(self):
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a = {
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"x0": 5,
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"x1": 10,
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"top": 20,
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"bottom": 30,
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"width": 5,
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"height": 10,
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"doctop": 120,
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"y0": 40,
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"y1": 50,
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}
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b = dict(a)
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b["x0"] = 15
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b["x1"] = 20
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a_new = utils.move_object(a, "h", 10)
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assert a_new == b
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def test_snap_objects(self):
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a = {
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"x0": 5,
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"x1": 10,
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"top": 20,
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"bottom": 30,
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"width": 5,
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"height": 10,
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"doctop": 120,
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"y0": 40,
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"y1": 50,
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}
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b = dict(a)
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b["x0"] = 6
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b["x1"] = 11
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c = dict(a)
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c["x0"] = 7
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c["x1"] = 12
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a_new, b_new, c_new = utils.snap_objects([a, b, c], "x0", 1)
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assert a_new == b_new == c_new
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def test_filter_edges(self):
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with pytest.raises(ValueError):
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utils.filter_edges([], "x")
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