def preprocess(content, options):
"""Split, filter, and join lines, and return a line iterator
:param content: the content of the requirements file
:param options: cli options
"""
lines_enum = enumerate(content.splitlines(), start=1)
lines_enum = join_lines(lines_enum)
lines_enum = ignore_comments(lines_enum)
lines_enum = skip_regex(lines_enum, options)
return lines_enum
def test_last_line_with_escape(self):
lines = enumerate([
'line 1',
'line 2 \\',
], start=1)
expect = [
(1, 'line 1'),
(2, 'line 2 '),
]
assert expect == list(join_lines(lines))
def test_last_line_with_escape(self):
lines = enumerate([
'line 1',
'line 2 \\',
], start=1)
expect = [
(1, 'line 1'),
(2, 'line 2 '),
]
assert expect == list(join_lines(lines))
def test_join_lines(self):
lines = enumerate([
'line 1', 'line 2:1 \\', 'line 2:2', 'line 3:1 \\', 'line 3:2 \\',
'line 3:3', 'line 4'
],
start=1)
expect = [
(1, 'line 1'),
(2, 'line 2:1 line 2:2'),
(4, 'line 3:1 line 3:2 line 3:3'),
(7, 'line 4'),
]
assert expect == list(join_lines(lines))
def test_join_lines(self):
lines = enumerate([
'line 1',
'line 2:1 \\',
'line 2:2',
'line 3:1 \\',
'line 3:2 \\',
'line 3:3',
'line 4'
], start=1)
expect = [
(1, 'line 1'),
(2, 'line 2:1 line 2:2'),
(4, 'line 3:1 line 3:2 line 3:3'),
(7, 'line 4'),
]
assert expect == list(join_lines(lines))
def test_join_lines(self):
lines = dedent('''\
line 1
line 2:1 \\
line 2:2
line 3:1 \\
line 3:2 \\
line 3:3
line 4
''').splitlines()
expect = [
'line 1',
'line 2:1 line 2:2',
'line 3:1 line 3:2 line 3:3',
'line 4',
]
assert expect == list(join_lines(lines))
def test_join_lines(self):
lines = dedent('''\
line 1
line 2:1 \\
line 2:2
line 3:1 \\
line 3:2 \\
line 3:3
line 4
''').splitlines()
expect = [
'line 1',
'line 2:1 line 2:2',
'line 3:1 line 3:2 line 3:3',
'line 4',
]
assert expect == list(join_lines(lines))
def parse_requirements(filename, finder=None, comes_from=None, options=None,
session=None, constraint=False, wheel_cache=None):
"""Parse a requirements file and yield InstallRequirement instances.
:param filename: Path or url of requirements file.
:param finder: Instance of pip.index.PackageFinder.
:param comes_from: Origin description of requirements.
:param options: Global options.
:param session: Instance of pip.download.PipSession.
:param constraint: If true, parsing a constraint file rather than
requirements file.
:param wheel_cache: Instance of pip.wheel.WheelCache
"""
if session is None:
raise TypeError(
"parse_requirements() missing 1 required keyword argument: "
"'session'"
)
_, content = get_file_content(
filename, comes_from=comes_from, session=session
)
lines = content.splitlines()
lines = ignore_comments(lines)
lines = join_lines(lines)
lines = skip_regex(lines, options)
lines = expand_env_variables(lines)
kwargs = {}
# The constraint keyword was only added in 7.1+
if tuple(pip.__version__.split('.')[:2]) > ('7', '0'):
kwargs['constraint'] = constraint
for line_number, line in enumerate(lines, 1):
req_iter = process_line(line, filename, line_number, finder,
comes_from, options, session, wheel_cache,
**kwargs)
for req in req_iter:
yield req
def __read_lines(self):
with open(self.path) as f:
lines = f.read().splitlines()
lines_enum = enumerate(lines, start=1)
lines_enum = join_lines(lines_enum)
lines_enum = ignore_comments(lines_enum)
for line_number, line in lines_enum:
if line.startswith('-e '):
ui.warn('requirements file flags are not supported yet:', line)
continue
req_iter = process_line(
line,
None,
0,
None,
None,
None,
None,
None,
)
for req in req_iter:
yield req, line_number
def yield_lines(content):
lines = content.splitlines()
for line_number, line in req_file.join_lines(enumerate(lines)):
yield (lines[line_number], line_number + 1, line)
