227 lines
6.8 KiB
Python
227 lines
6.8 KiB
Python
import io
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from tempfile import TemporaryFile
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from pdfminer.converter import PDFLayoutAnalyzer, PDFConverter
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from pdfminer.high_level import extract_pages
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from pdfminer.layout import LTContainer, LTRect, LTLine, LTCurve
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from pdfminer.pdfinterp import PDFGraphicState
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class TestPaintPath:
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def test_paint_path(self):
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path = [('m', 6, 7), ('l', 7, 7)]
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analyzer = self._get_analyzer()
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analyzer.cur_item = LTContainer([0, 100, 0, 100])
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analyzer.paint_path(PDFGraphicState(), False, False, False, path)
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assert len(analyzer.cur_item._objs) == 1
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def test_paint_path_mlllh(self):
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path = [('m', 6, 7), ('l', 7, 7), ('l', 7, 91), ('l', 6, 91), ('h',)]
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analyzer = self._get_analyzer()
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analyzer.cur_item = LTContainer([0, 100, 0, 100])
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analyzer.paint_path(PDFGraphicState(), False, False, False, path)
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assert len(analyzer.cur_item) == 1
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def test_paint_path_multiple_mlllh(self):
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"""Path from samples/contrib/issue-00369-excel.pdf"""
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path = [
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('m', 6, 7), ('l', 7, 7), ('l', 7, 91), ('l', 6, 91), ('h',),
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('m', 4, 7), ('l', 6, 7), ('l', 6, 91), ('l', 4, 91), ('h',),
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('m', 67, 2), ('l', 68, 2), ('l', 68, 3), ('l', 67, 3), ('h',)
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]
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analyzer = self._get_analyzer()
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analyzer.cur_item = LTContainer([0, 100, 0, 100])
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analyzer.paint_path(PDFGraphicState(), False, False, False, path)
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assert len(analyzer.cur_item._objs) == 3
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def test_paint_path_quadrilaterals(self):
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"""via https://github.com/pdfminer/pdfminer.six/issues/473"""
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def parse(path):
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analyzer = self._get_analyzer()
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analyzer.cur_item = LTContainer([0, 1000, 0, 1000])
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analyzer.paint_path(PDFGraphicState(), False, False, False, path)
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return analyzer.cur_item._objs
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def get_types(path):
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return list(map(type, parse(path)))
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# Standard rect
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assert get_types(
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[
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("m", 10, 90),
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("l", 90, 90),
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("l", 90, 10),
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("l", 10, 10),
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("h",),
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]
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) == [LTRect]
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# Same but mllll variation
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assert get_types(
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[
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("m", 10, 90),
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("l", 90, 90),
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("l", 90, 10),
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("l", 10, 10),
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("l", 10, 90),
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]
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) == [LTRect]
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# Bowtie shape
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assert get_types(
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[
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("m", 110, 90),
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("l", 190, 10),
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("l", 190, 90),
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("l", 110, 10),
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("h",),
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]
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) == [LTCurve]
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# Quadrilateral with one slanted side
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assert get_types(
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[
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("m", 210, 90),
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("l", 290, 60),
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("l", 290, 10),
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("l", 210, 10),
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("h",),
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]
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) == [LTCurve]
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# Path with two rect subpaths
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assert get_types(
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[
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("m", 310, 90),
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("l", 350, 90),
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("l", 350, 10),
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("l", 310, 10),
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("h",),
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("m", 350, 90),
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("l", 390, 90),
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("l", 390, 10),
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("l", 350, 10),
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("h",),
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]
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) == [LTRect, LTRect]
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# Path with one rect subpath and one pentagon
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assert get_types(
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[
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("m", 410, 90),
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("l", 445, 90),
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("l", 445, 10),
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("l", 410, 10),
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("h",),
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("m", 455, 70),
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("l", 475, 90),
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("l", 490, 70),
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("l", 490, 10),
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("l", 455, 10),
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("h",),
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]
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) == [LTRect, LTCurve]
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# Three types of simple lines
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assert get_types(
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[
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# Vertical line
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("m", 10, 30),
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("l", 10, 40),
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("h",),
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# Horizontal line
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("m", 10, 50),
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("l", 70, 50),
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("h",),
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# Diagonal line
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("m", 10, 10),
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("l", 30, 30),
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("h",),
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]
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) == [LTLine, LTLine, LTLine]
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# Same as above, but 'ml' variation
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assert get_types(
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[
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# Vertical line
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("m", 10, 30),
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("l", 10, 40),
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# Horizontal line
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("m", 10, 50),
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("l", 70, 50),
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# Diagonal line
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("m", 10, 10),
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("l", 30, 30),
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]
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) == [LTLine, LTLine, LTLine]
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# There are six lines in this one-page PDF;
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# they all have shape 'ml' not 'mlh'
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ml_pdf = extract_pages("samples/contrib/pr-00530-ml-lines.pdf")
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ml_pdf_page = list(ml_pdf)[0]
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assert sum(type(item) == LTLine for item in ml_pdf_page) == 6
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def _get_analyzer(self):
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analyzer = PDFLayoutAnalyzer(None)
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analyzer.set_ctm([1, 0, 0, 1, 0, 0])
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return analyzer
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def test_paint_path_beziers(self):
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"""See section 4.4, table 4.9 of the PDF reference manual"""
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def parse(path):
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analyzer = self._get_analyzer()
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analyzer.cur_item = LTContainer([0, 1000, 0, 1000])
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analyzer.paint_path(PDFGraphicState(), False, False, False, path)
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return analyzer.cur_item._objs
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# "c" operator
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assert parse([
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("m", 72.41, 433.89),
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("c", 72.41, 434.45, 71.96, 434.89, 71.41, 434.89),
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])[0].pts == [
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(72.41, 433.89),
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(71.41, 434.89),
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]
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# "v" operator
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assert parse([
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("m", 72.41, 433.89),
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("v", 71.96, 434.89, 71.41, 434.89),
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])[0].pts == [
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(72.41, 433.89),
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(71.41, 434.89),
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]
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# "y" operator
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assert parse([
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("m", 72.41, 433.89),
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("y", 72.41, 434.45, 71.41, 434.89),
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])[0].pts == [
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(72.41, 433.89),
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(71.41, 434.89),
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]
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class TestBinaryDetector():
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def test_stringio(self):
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assert not PDFConverter._is_binary_stream(io.StringIO())
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def test_bytesio(self):
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assert PDFConverter._is_binary_stream(io.BytesIO())
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def test_tmpfile(self):
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with TemporaryFile(mode='w') as f:
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assert not PDFConverter._is_binary_stream(f)
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def test_binary_tmpfile(self):
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with TemporaryFile(mode='wb') as f:
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assert PDFConverter._is_binary_stream(f)
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def test_non_file_like_object_defaults_to_binary(self):
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assert PDFConverter._is_binary_stream(object())
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def test_textiowrapper(self):
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assert not PDFConverter._is_binary_stream(io.TextIOBase())
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