-
-
Notifications
You must be signed in to change notification settings - Fork 565
/
core.py
455 lines (412 loc) · 19.3 KB
/
core.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
import textwrap
from io import StringIO
from itertools import chain
from typing import List, TextIO, Union
import isort.literal
from isort.settings import DEFAULT_CONFIG, Config
from . import output, parse
from .exceptions import FileSkipComment
from .format import format_natural, remove_whitespace
from .settings import FILE_SKIP_COMMENTS
CIMPORT_IDENTIFIERS = ("cimport ", "cimport*", "from.cimport")
IMPORT_START_IDENTIFIERS = ("from ", "from.import", "import ", "import*") + CIMPORT_IDENTIFIERS
DOCSTRING_INDICATORS = ('"""', "'''")
COMMENT_INDICATORS = DOCSTRING_INDICATORS + ("'", '"', "#")
CODE_SORT_COMMENTS = (
"# isort: list",
"# isort: dict",
"# isort: set",
"# isort: unique-list",
"# isort: tuple",
"# isort: unique-tuple",
"# isort: assignments",
)
def process(
input_stream: TextIO,
output_stream: TextIO,
extension: str = "py",
raise_on_skip: bool = True,
config: Config = DEFAULT_CONFIG,
) -> bool:
"""Parses stream identifying sections of contiguous imports and sorting them
Code with unsorted imports is read from the provided `input_stream`, sorted and then
outputted to the specified `output_stream`.
- `input_stream`: Text stream with unsorted import sections.
- `output_stream`: Text stream to output sorted inputs into.
- `config`: Config settings to use when sorting imports. Defaults settings.
- *Default*: `isort.settings.DEFAULT_CONFIG`.
- `extension`: The file extension or file extension rules that should be used.
- *Default*: `"py"`.
- *Choices*: `["py", "pyi", "pyx"]`.
Returns `True` if there were changes that needed to be made (errors present) from what
was provided in the input_stream, otherwise `False`.
"""
line_separator: str = config.line_ending
add_imports: List[str] = [format_natural(addition) for addition in config.add_imports]
import_section: str = ""
next_import_section: str = ""
next_cimports: bool = False
in_quote: str = ""
first_comment_index_start: int = -1
first_comment_index_end: int = -1
contains_imports: bool = False
in_top_comment: bool = False
first_import_section: bool = True
indent: str = ""
isort_off: bool = False
skip_file: bool = False
code_sorting: Union[bool, str] = False
code_sorting_section: str = ""
code_sorting_indent: str = ""
cimports: bool = False
made_changes: bool = False
stripped_line: str = ""
end_of_file: bool = False
verbose_output: List[str] = []
if config.float_to_top:
new_input = ""
current = ""
isort_off = False
for line in chain(input_stream, (None,)):
if isort_off and line is not None:
if line == "# isort: on\n":
isort_off = False
new_input += line
elif line in ("# isort: split\n", "# isort: off\n", None) or str(line).endswith(
"# isort: split\n"
):
if line == "# isort: off\n":
isort_off = True
if current:
if add_imports:
add_line_separator = line_separator or "\n"
current += add_line_separator + add_line_separator.join(add_imports)
add_imports = []
parsed = parse.file_contents(current, config=config)
verbose_output += parsed.verbose_output
extra_space = ""
while current and current[-1] == "\n":
extra_space += "\n"
current = current[:-1]
extra_space = extra_space.replace("\n", "", 1)
sorted_output = output.sorted_imports(
parsed, config, extension, import_type="import"
)
made_changes = made_changes or _has_changed(
before=current,
after=sorted_output,
line_separator=parsed.line_separator,
ignore_whitespace=config.ignore_whitespace,
)
new_input += sorted_output
new_input += extra_space
current = ""
new_input += line or ""
else:
current += line or ""
input_stream = StringIO(new_input)
for index, line in enumerate(chain(input_stream, (None,))):
if line is None:
if index == 0 and not config.force_adds:
return False
not_imports = True
end_of_file = True
line = ""
if not line_separator:
line_separator = "\n"
if code_sorting and code_sorting_section:
sorted_code = textwrap.indent(
isort.literal.assignment(
code_sorting_section,
str(code_sorting),
extension,
config=_indented_config(config, indent),
),
code_sorting_indent,
)
made_changes = made_changes or _has_changed(
before=code_sorting_section,
after=sorted_code,
line_separator=line_separator,
ignore_whitespace=config.ignore_whitespace,
)
output_stream.write(sorted_code)
else:
stripped_line = line.strip()
if stripped_line and not line_separator:
line_separator = line[len(line.rstrip()) :].replace(" ", "").replace("\t", "")
for file_skip_comment in FILE_SKIP_COMMENTS:
if file_skip_comment in line:
if raise_on_skip:
raise FileSkipComment("Passed in content")
isort_off = True
skip_file = True
if not in_quote and stripped_line == "# isort: off":
isort_off = True
if (
(index == 0 or (index in (1, 2) and not contains_imports))
and stripped_line.startswith("#")
and stripped_line not in config.section_comments
):
in_top_comment = True
elif in_top_comment and (
not line.startswith("#") or stripped_line in config.section_comments
):
in_top_comment = False
first_comment_index_end = index - 1
was_in_quote = bool(in_quote)
if (not stripped_line.startswith("#") or in_quote) and '"' in line or "'" in line:
char_index = 0
if first_comment_index_start == -1 and (
line.startswith('"') or line.startswith("'")
):
first_comment_index_start = index
while char_index < len(line):
if line[char_index] == "\\":
char_index += 1
elif in_quote:
if line[char_index : char_index + len(in_quote)] == in_quote:
in_quote = ""
if first_comment_index_end < first_comment_index_start:
first_comment_index_end = index
elif line[char_index] in ("'", '"'):
long_quote = line[char_index : char_index + 3]
if long_quote in ('"""', "'''"):
in_quote = long_quote
char_index += 2
else:
in_quote = line[char_index]
elif line[char_index] == "#":
break
char_index += 1
not_imports = bool(in_quote) or was_in_quote or in_top_comment or isort_off
if not (in_quote or was_in_quote or in_top_comment):
if isort_off:
if not skip_file and stripped_line == "# isort: on":
isort_off = False
elif stripped_line.endswith("# isort: split"):
not_imports = True
elif stripped_line in CODE_SORT_COMMENTS:
code_sorting = stripped_line.split("isort: ")[1].strip()
code_sorting_indent = line[: -len(line.lstrip())]
not_imports = True
elif code_sorting:
if not stripped_line:
sorted_code = textwrap.indent(
isort.literal.assignment(
code_sorting_section,
str(code_sorting),
extension,
config=_indented_config(config, indent),
),
code_sorting_indent,
)
made_changes = made_changes or _has_changed(
before=code_sorting_section,
after=sorted_code,
line_separator=line_separator,
ignore_whitespace=config.ignore_whitespace,
)
output_stream.write(sorted_code)
not_imports = True
code_sorting = False
code_sorting_section = ""
code_sorting_indent = ""
else:
code_sorting_section += line
line = ""
elif stripped_line in config.section_comments:
if import_section and not contains_imports:
output_stream.write(import_section)
import_section = line
not_imports = False
else:
import_section += line
indent = line[: -len(line.lstrip())]
elif not (stripped_line or contains_imports):
not_imports = True
elif (
not stripped_line
or stripped_line.startswith("#")
and (not indent or indent + line.lstrip() == line)
and not config.treat_all_comments_as_code
and stripped_line not in config.treat_comments_as_code
):
import_section += line
elif stripped_line.startswith(IMPORT_START_IDENTIFIERS):
new_indent = line[: -len(line.lstrip())]
import_statement = line
stripped_line = line.strip().split("#")[0]
while stripped_line.endswith("\\") or (
"(" in stripped_line and ")" not in stripped_line
):
if stripped_line.endswith("\\"):
while stripped_line and stripped_line.endswith("\\"):
line = input_stream.readline()
stripped_line = line.strip().split("#")[0]
import_statement += line
else:
while ")" not in stripped_line:
line = input_stream.readline()
stripped_line = line.strip().split("#")[0]
import_statement += line
if (
import_statement.lstrip().startswith("from")
and "import" not in import_statement
):
line = import_statement
not_imports = True
else:
did_contain_imports = contains_imports
contains_imports = True
cimport_statement: bool = False
if (
import_statement.lstrip().startswith(CIMPORT_IDENTIFIERS)
or " cimport " in import_statement
or " cimport*" in import_statement
or " cimport(" in import_statement
or ".cimport" in import_statement
):
cimport_statement = True
if cimport_statement != cimports or (
new_indent != indent
and import_section
and (not did_contain_imports or len(new_indent) < len(indent))
):
indent = new_indent
if import_section:
next_cimports = cimport_statement
next_import_section = import_statement
import_statement = ""
not_imports = True
line = ""
else:
cimports = cimport_statement
else:
if new_indent != indent:
if import_section and did_contain_imports:
import_statement = indent + import_statement.lstrip()
else:
indent = new_indent
import_section += import_statement
else:
not_imports = True
if not_imports:
raw_import_section: str = import_section
if (
add_imports
and (stripped_line or end_of_file)
and not config.append_only
and not in_top_comment
and not in_quote
and not import_section
and not line.lstrip().startswith(COMMENT_INDICATORS)
and not line.rstrip().endswith(DOCSTRING_INDICATORS)
):
import_section = line_separator.join(add_imports) + line_separator
if end_of_file and index != 0:
output_stream.write(line_separator)
contains_imports = True
add_imports = []
if next_import_section and not import_section: # pragma: no cover
raw_import_section = import_section = next_import_section
next_import_section = ""
if import_section:
if add_imports and not indent:
import_section = (
line_separator.join(add_imports) + line_separator + import_section
)
contains_imports = True
add_imports = []
if not indent:
import_section += line
raw_import_section += line
if not contains_imports:
output_stream.write(import_section)
else:
leading_whitespace = import_section[: -len(import_section.lstrip())]
trailing_whitespace = import_section[len(import_section.rstrip()) :]
if first_import_section and not import_section.lstrip(
line_separator
).startswith(COMMENT_INDICATORS):
import_section = import_section.lstrip(line_separator)
raw_import_section = raw_import_section.lstrip(line_separator)
first_import_section = False
if indent:
import_section = "".join(
line[len(indent) :] for line in import_section.splitlines(keepends=True)
)
parsed_content = parse.file_contents(import_section, config=config)
verbose_output += parsed_content.verbose_output
sorted_import_section = output.sorted_imports(
parsed_content,
_indented_config(config, indent),
extension,
import_type="cimport" if cimports else "import",
)
if not (import_section.strip() and not sorted_import_section):
if indent:
sorted_import_section = (
leading_whitespace
+ textwrap.indent(sorted_import_section, indent).strip()
+ trailing_whitespace
)
made_changes = made_changes or _has_changed(
before=raw_import_section,
after=sorted_import_section,
line_separator=line_separator,
ignore_whitespace=config.ignore_whitespace,
)
output_stream.write(sorted_import_section)
if not line and not indent and next_import_section:
output_stream.write(line_separator)
if indent:
output_stream.write(line)
if not next_import_section:
indent = ""
if next_import_section:
cimports = next_cimports
contains_imports = True
else:
contains_imports = False
import_section = next_import_section
next_import_section = ""
else:
output_stream.write(line)
not_imports = False
if stripped_line and not in_quote and not import_section and not next_import_section:
if stripped_line == "yield":
while not stripped_line or stripped_line == "yield":
new_line = input_stream.readline()
if not new_line:
break
output_stream.write(new_line)
stripped_line = new_line.strip().split("#")[0]
if stripped_line.startswith("raise") or stripped_line.startswith("yield"):
while stripped_line.endswith("\\"):
new_line = input_stream.readline()
if not new_line:
break
output_stream.write(new_line)
stripped_line = new_line.strip().split("#")[0]
if made_changes and config.only_modified:
for output_str in verbose_output:
print(output_str)
return made_changes
def _indented_config(config: Config, indent: str):
if not indent:
return config
return Config(
config=config,
line_length=max(config.line_length - len(indent), 0),
wrap_length=max(config.wrap_length - len(indent), 0),
lines_after_imports=1,
import_headings=config.import_headings if config.indented_import_headings else {},
)
def _has_changed(before: str, after: str, line_separator: str, ignore_whitespace: bool) -> bool:
if ignore_whitespace:
return (
remove_whitespace(before, line_separator=line_separator).strip()
!= remove_whitespace(after, line_separator=line_separator).strip()
)
return before.strip() != after.strip()