summaryrefslogtreecommitdiffstats
path: root/third_party/python/Mako/mako/template.py
blob: 3fd08714b81be0a19ecd3e251362e2fe27a8b902 (plain)
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
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
# mako/template.py
# Copyright 2006-2020 the Mako authors and contributors <see AUTHORS file>
#
# This module is part of Mako and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php

"""Provides the Template class, a facade for parsing, generating and executing
template strings, as well as template runtime operations."""

import json
import os
import re
import shutil
import stat
import sys
import tempfile
import types
import weakref

from mako import cache
from mako import codegen
from mako import compat
from mako import exceptions
from mako import runtime
from mako import util
from mako.lexer import Lexer


class Template(object):

    r"""Represents a compiled template.

    :class:`.Template` includes a reference to the original
    template source (via the :attr:`.source` attribute)
    as well as the source code of the
    generated Python module (i.e. the :attr:`.code` attribute),
    as well as a reference to an actual Python module.

    :class:`.Template` is constructed using either a literal string
    representing the template text, or a filename representing a filesystem
    path to a source file.

    :param text: textual template source.  This argument is mutually
     exclusive versus the ``filename`` parameter.

    :param filename: filename of the source template.  This argument is
     mutually exclusive versus the ``text`` parameter.

    :param buffer_filters: string list of filters to be applied
     to the output of ``%def``\ s which are buffered, cached, or otherwise
     filtered, after all filters
     defined with the ``%def`` itself have been applied. Allows the
     creation of default expression filters that let the output
     of return-valued ``%def``\ s "opt out" of that filtering via
     passing special attributes or objects.

    :param bytestring_passthrough: When ``True``, and ``output_encoding`` is
     set to ``None``, and :meth:`.Template.render` is used to render,
     the `StringIO` or `cStringIO` buffer will be used instead of the
     default "fast" buffer.   This allows raw bytestrings in the
     output stream, such as in expressions, to pass straight
     through to the buffer.  This flag is forced
     to ``True`` if ``disable_unicode`` is also configured.

     .. versionadded:: 0.4
        Added to provide the same behavior as that of the previous series.

    :param cache_args: Dictionary of cache configuration arguments that
     will be passed to the :class:`.CacheImpl`.   See :ref:`caching_toplevel`.

    :param cache_dir:

     .. deprecated:: 0.6
        Use the ``'dir'`` argument in the ``cache_args`` dictionary.
        See :ref:`caching_toplevel`.

    :param cache_enabled: Boolean flag which enables caching of this
     template.  See :ref:`caching_toplevel`.

    :param cache_impl: String name of a :class:`.CacheImpl` caching
     implementation to use.   Defaults to ``'beaker'``.

    :param cache_type:

     .. deprecated:: 0.6
        Use the ``'type'`` argument in the ``cache_args`` dictionary.
        See :ref:`caching_toplevel`.

    :param cache_url:

     .. deprecated:: 0.6
        Use the ``'url'`` argument in the ``cache_args`` dictionary.
        See :ref:`caching_toplevel`.

    :param default_filters: List of string filter names that will
     be applied to all expressions.  See :ref:`filtering_default_filters`.

    :param disable_unicode: Disables all awareness of Python Unicode
     objects.  See :ref:`unicode_disabled`.

    :param enable_loop: When ``True``, enable the ``loop`` context variable.
     This can be set to ``False`` to support templates that may
     be making usage of the name "``loop``".   Individual templates can
     re-enable the "loop" context by placing the directive
     ``enable_loop="True"`` inside the ``<%page>`` tag -- see
     :ref:`migrating_loop`.

    :param encoding_errors: Error parameter passed to ``encode()`` when
     string encoding is performed. See :ref:`usage_unicode`.

    :param error_handler: Python callable which is called whenever
     compile or runtime exceptions occur. The callable is passed
     the current context as well as the exception. If the
     callable returns ``True``, the exception is considered to
     be handled, else it is re-raised after the function
     completes. Is used to provide custom error-rendering
     functions.

     .. seealso::

        :paramref:`.Template.include_error_handler` - include-specific
        error handler function

    :param format_exceptions: if ``True``, exceptions which occur during
     the render phase of this template will be caught and
     formatted into an HTML error page, which then becomes the
     rendered result of the :meth:`.render` call. Otherwise,
     runtime exceptions are propagated outwards.

    :param imports: String list of Python statements, typically individual
     "import" lines, which will be placed into the module level
     preamble of all generated Python modules. See the example
     in :ref:`filtering_default_filters`.

    :param future_imports: String list of names to import from `__future__`.
     These will be concatenated into a comma-separated string and inserted
     into the beginning of the template, e.g. ``futures_imports=['FOO',
     'BAR']`` results in ``from __future__ import FOO, BAR``.  If you're
     interested in using features like the new division operator, you must
     use future_imports to convey that to the renderer, as otherwise the
     import will not appear as the first executed statement in the generated
     code and will therefore not have the desired effect.

    :param include_error_handler: An error handler that runs when this template
     is included within another one via the ``<%include>`` tag, and raises an
     error.  Compare to the :paramref:`.Template.error_handler` option.

     .. versionadded:: 1.0.6

     .. seealso::

        :paramref:`.Template.error_handler` - top-level error handler function

    :param input_encoding: Encoding of the template's source code.  Can
     be used in lieu of the coding comment. See
     :ref:`usage_unicode` as well as :ref:`unicode_toplevel` for
     details on source encoding.

    :param lookup: a :class:`.TemplateLookup` instance that will be used
     for all file lookups via the ``<%namespace>``,
     ``<%include>``, and ``<%inherit>`` tags. See
     :ref:`usage_templatelookup`.

    :param module_directory: Filesystem location where generated
     Python module files will be placed.

    :param module_filename: Overrides the filename of the generated
     Python module file. For advanced usage only.

    :param module_writer: A callable which overrides how the Python
     module is written entirely.  The callable is passed the
     encoded source content of the module and the destination
     path to be written to.   The default behavior of module writing
     uses a tempfile in conjunction with a file move in order
     to make the operation atomic.   So a user-defined module
     writing function that mimics the default behavior would be:

     .. sourcecode:: python

         import tempfile
         import os
         import shutil

         def module_writer(source, outputpath):
             (dest, name) = \\
                 tempfile.mkstemp(
                     dir=os.path.dirname(outputpath)
                 )

             os.write(dest, source)
             os.close(dest)
             shutil.move(name, outputpath)

         from mako.template import Template
         mytemplate = Template(
                         filename="index.html",
                         module_directory="/path/to/modules",
                         module_writer=module_writer
                     )

     The function is provided for unusual configurations where
     certain platform-specific permissions or other special
     steps are needed.

    :param output_encoding: The encoding to use when :meth:`.render`
     is called.
     See :ref:`usage_unicode` as well as :ref:`unicode_toplevel`.

    :param preprocessor: Python callable which will be passed
     the full template source before it is parsed. The return
     result of the callable will be used as the template source
     code.

    :param lexer_cls: A :class:`.Lexer` class used to parse
     the template.   The :class:`.Lexer` class is used by
     default.

     .. versionadded:: 0.7.4

    :param strict_undefined: Replaces the automatic usage of
     ``UNDEFINED`` for any undeclared variables not located in
     the :class:`.Context` with an immediate raise of
     ``NameError``. The advantage is immediate reporting of
     missing variables which include the name.

     .. versionadded:: 0.3.6

    :param uri: string URI or other identifier for this template.
     If not provided, the ``uri`` is generated from the filesystem
     path, or from the in-memory identity of a non-file-based
     template. The primary usage of the ``uri`` is to provide a key
     within :class:`.TemplateLookup`, as well as to generate the
     file path of the generated Python module file, if
     ``module_directory`` is specified.

    """

    lexer_cls = Lexer

    def __init__(
        self,
        text=None,
        filename=None,
        uri=None,
        format_exceptions=False,
        error_handler=None,
        lookup=None,
        output_encoding=None,
        encoding_errors="strict",
        module_directory=None,
        cache_args=None,
        cache_impl="beaker",
        cache_enabled=True,
        cache_type=None,
        cache_dir=None,
        cache_url=None,
        module_filename=None,
        input_encoding=None,
        disable_unicode=False,
        module_writer=None,
        bytestring_passthrough=False,
        default_filters=None,
        buffer_filters=(),
        strict_undefined=False,
        imports=None,
        future_imports=None,
        enable_loop=True,
        preprocessor=None,
        lexer_cls=None,
        include_error_handler=None,
    ):
        if uri:
            self.module_id = re.sub(r"\W", "_", uri)
            self.uri = uri
        elif filename:
            self.module_id = re.sub(r"\W", "_", filename)
            drive, path = os.path.splitdrive(filename)
            path = os.path.normpath(path).replace(os.path.sep, "/")
            self.uri = path
        else:
            self.module_id = "memory:" + hex(id(self))
            self.uri = self.module_id

        u_norm = self.uri
        if u_norm.startswith("/"):
            u_norm = u_norm[1:]
        u_norm = os.path.normpath(u_norm)
        if u_norm.startswith(".."):
            raise exceptions.TemplateLookupException(
                'Template uri "%s" is invalid - '
                "it cannot be relative outside "
                "of the root path." % self.uri
            )

        self.input_encoding = input_encoding
        self.output_encoding = output_encoding
        self.encoding_errors = encoding_errors
        self.disable_unicode = disable_unicode
        self.bytestring_passthrough = bytestring_passthrough or disable_unicode
        self.enable_loop = enable_loop
        self.strict_undefined = strict_undefined
        self.module_writer = module_writer

        if compat.py3k and disable_unicode:
            raise exceptions.UnsupportedError(
                "Mako for Python 3 does not " "support disabling Unicode"
            )
        elif output_encoding and disable_unicode:
            raise exceptions.UnsupportedError(
                "output_encoding must be set to "
                "None when disable_unicode is used."
            )
        if default_filters is None:
            if compat.py3k or self.disable_unicode:
                self.default_filters = ["str"]
            else:
                self.default_filters = ["unicode"]
        else:
            self.default_filters = default_filters
        self.buffer_filters = buffer_filters

        self.imports = imports
        self.future_imports = future_imports
        self.preprocessor = preprocessor

        if lexer_cls is not None:
            self.lexer_cls = lexer_cls

        # if plain text, compile code in memory only
        if text is not None:
            (code, module) = _compile_text(self, text, filename)
            self._code = code
            self._source = text
            ModuleInfo(module, None, self, filename, code, text, uri)
        elif filename is not None:
            # if template filename and a module directory, load
            # a filesystem-based module file, generating if needed
            if module_filename is not None:
                path = module_filename
            elif module_directory is not None:
                path = os.path.abspath(
                    os.path.join(
                        os.path.normpath(module_directory), u_norm + ".py"
                    )
                )
            else:
                path = None
            module = self._compile_from_file(path, filename)
        else:
            raise exceptions.RuntimeException(
                "Template requires text or filename"
            )

        self.module = module
        self.filename = filename
        self.callable_ = self.module.render_body
        self.format_exceptions = format_exceptions
        self.error_handler = error_handler
        self.include_error_handler = include_error_handler
        self.lookup = lookup

        self.module_directory = module_directory

        self._setup_cache_args(
            cache_impl,
            cache_enabled,
            cache_args,
            cache_type,
            cache_dir,
            cache_url,
        )

    @util.memoized_property
    def reserved_names(self):
        if self.enable_loop:
            return codegen.RESERVED_NAMES
        else:
            return codegen.RESERVED_NAMES.difference(["loop"])

    def _setup_cache_args(
        self,
        cache_impl,
        cache_enabled,
        cache_args,
        cache_type,
        cache_dir,
        cache_url,
    ):
        self.cache_impl = cache_impl
        self.cache_enabled = cache_enabled
        if cache_args:
            self.cache_args = cache_args
        else:
            self.cache_args = {}

        # transfer deprecated cache_* args
        if cache_type:
            self.cache_args["type"] = cache_type
        if cache_dir:
            self.cache_args["dir"] = cache_dir
        if cache_url:
            self.cache_args["url"] = cache_url

    def _compile_from_file(self, path, filename):
        if path is not None:
            util.verify_directory(os.path.dirname(path))
            filemtime = os.stat(filename)[stat.ST_MTIME]
            if (
                not os.path.exists(path)
                or os.stat(path)[stat.ST_MTIME] < filemtime
            ):
                data = util.read_file(filename)
                _compile_module_file(
                    self, data, filename, path, self.module_writer
                )
            module = compat.load_module(self.module_id, path)
            del sys.modules[self.module_id]
            if module._magic_number != codegen.MAGIC_NUMBER:
                data = util.read_file(filename)
                _compile_module_file(
                    self, data, filename, path, self.module_writer
                )
                module = compat.load_module(self.module_id, path)
                del sys.modules[self.module_id]
            ModuleInfo(module, path, self, filename, None, None, None)
        else:
            # template filename and no module directory, compile code
            # in memory
            data = util.read_file(filename)
            code, module = _compile_text(self, data, filename)
            self._source = None
            self._code = code
            ModuleInfo(module, None, self, filename, code, None, None)
        return module

    @property
    def source(self):
        """Return the template source code for this :class:`.Template`."""

        return _get_module_info_from_callable(self.callable_).source

    @property
    def code(self):
        """Return the module source code for this :class:`.Template`."""

        return _get_module_info_from_callable(self.callable_).code

    @util.memoized_property
    def cache(self):
        return cache.Cache(self)

    @property
    def cache_dir(self):
        return self.cache_args["dir"]

    @property
    def cache_url(self):
        return self.cache_args["url"]

    @property
    def cache_type(self):
        return self.cache_args["type"]

    def render(self, *args, **data):
        """Render the output of this template as a string.

        If the template specifies an output encoding, the string
        will be encoded accordingly, else the output is raw (raw
        output uses `cStringIO` and can't handle multibyte
        characters). A :class:`.Context` object is created corresponding
        to the given data. Arguments that are explicitly declared
        by this template's internal rendering method are also
        pulled from the given ``*args``, ``**data`` members.

        """
        return runtime._render(self, self.callable_, args, data)

    def render_unicode(self, *args, **data):
        """Render the output of this template as a unicode object."""

        return runtime._render(
            self, self.callable_, args, data, as_unicode=True
        )

    def render_context(self, context, *args, **kwargs):
        """Render this :class:`.Template` with the given context.

        The data is written to the context's buffer.

        """
        if getattr(context, "_with_template", None) is None:
            context._set_with_template(self)
        runtime._render_context(self, self.callable_, context, *args, **kwargs)

    def has_def(self, name):
        return hasattr(self.module, "render_%s" % name)

    def get_def(self, name):
        """Return a def of this template as a :class:`.DefTemplate`."""

        return DefTemplate(self, getattr(self.module, "render_%s" % name))

    def list_defs(self):
        """return a list of defs in the template.

        .. versionadded:: 1.0.4

        """
        return [i[7:] for i in dir(self.module) if i[:7] == "render_"]

    def _get_def_callable(self, name):
        return getattr(self.module, "render_%s" % name)

    @property
    def last_modified(self):
        return self.module._modified_time


class ModuleTemplate(Template):

    """A Template which is constructed given an existing Python module.

       e.g.::

            t = Template("this is a template")
            f = file("mymodule.py", "w")
            f.write(t.code)
            f.close()

            import mymodule

            t = ModuleTemplate(mymodule)
            print(t.render())

    """

    def __init__(
        self,
        module,
        module_filename=None,
        template=None,
        template_filename=None,
        module_source=None,
        template_source=None,
        output_encoding=None,
        encoding_errors="strict",
        disable_unicode=False,
        bytestring_passthrough=False,
        format_exceptions=False,
        error_handler=None,
        lookup=None,
        cache_args=None,
        cache_impl="beaker",
        cache_enabled=True,
        cache_type=None,
        cache_dir=None,
        cache_url=None,
        include_error_handler=None,
    ):
        self.module_id = re.sub(r"\W", "_", module._template_uri)
        self.uri = module._template_uri
        self.input_encoding = module._source_encoding
        self.output_encoding = output_encoding
        self.encoding_errors = encoding_errors
        self.disable_unicode = disable_unicode
        self.bytestring_passthrough = bytestring_passthrough or disable_unicode
        self.enable_loop = module._enable_loop

        if compat.py3k and disable_unicode:
            raise exceptions.UnsupportedError(
                "Mako for Python 3 does not " "support disabling Unicode"
            )
        elif output_encoding and disable_unicode:
            raise exceptions.UnsupportedError(
                "output_encoding must be set to "
                "None when disable_unicode is used."
            )

        self.module = module
        self.filename = template_filename
        ModuleInfo(
            module,
            module_filename,
            self,
            template_filename,
            module_source,
            template_source,
            module._template_uri,
        )

        self.callable_ = self.module.render_body
        self.format_exceptions = format_exceptions
        self.error_handler = error_handler
        self.include_error_handler = include_error_handler
        self.lookup = lookup
        self._setup_cache_args(
            cache_impl,
            cache_enabled,
            cache_args,
            cache_type,
            cache_dir,
            cache_url,
        )


class DefTemplate(Template):

    """A :class:`.Template` which represents a callable def in a parent
    template."""

    def __init__(self, parent, callable_):
        self.parent = parent
        self.callable_ = callable_
        self.output_encoding = parent.output_encoding
        self.module = parent.module
        self.encoding_errors = parent.encoding_errors
        self.format_exceptions = parent.format_exceptions
        self.error_handler = parent.error_handler
        self.include_error_handler = parent.include_error_handler
        self.enable_loop = parent.enable_loop
        self.lookup = parent.lookup
        self.bytestring_passthrough = parent.bytestring_passthrough

    def get_def(self, name):
        return self.parent.get_def(name)


class ModuleInfo(object):

    """Stores information about a module currently loaded into
    memory, provides reverse lookups of template source, module
    source code based on a module's identifier.

     """

    _modules = weakref.WeakValueDictionary()

    def __init__(
        self,
        module,
        module_filename,
        template,
        template_filename,
        module_source,
        template_source,
        template_uri,
    ):
        self.module = module
        self.module_filename = module_filename
        self.template_filename = template_filename
        self.module_source = module_source
        self.template_source = template_source
        self.template_uri = template_uri
        self._modules[module.__name__] = template._mmarker = self
        if module_filename:
            self._modules[module_filename] = self

    @classmethod
    def get_module_source_metadata(cls, module_source, full_line_map=False):
        source_map = re.search(
            r"__M_BEGIN_METADATA(.+?)__M_END_METADATA", module_source, re.S
        ).group(1)
        source_map = json.loads(source_map)
        source_map["line_map"] = dict(
            (int(k), int(v)) for k, v in source_map["line_map"].items()
        )
        if full_line_map:
            f_line_map = source_map["full_line_map"] = []
            line_map = source_map["line_map"]

            curr_templ_line = 1
            for mod_line in range(1, max(line_map)):
                if mod_line in line_map:
                    curr_templ_line = line_map[mod_line]
                f_line_map.append(curr_templ_line)
        return source_map

    @property
    def code(self):
        if self.module_source is not None:
            return self.module_source
        else:
            return util.read_python_file(self.module_filename)

    @property
    def source(self):
        if self.template_source is not None:
            if self.module._source_encoding and not isinstance(
                self.template_source, compat.text_type
            ):
                return self.template_source.decode(
                    self.module._source_encoding
                )
            else:
                return self.template_source
        else:
            data = util.read_file(self.template_filename)
            if self.module._source_encoding:
                return data.decode(self.module._source_encoding)
            else:
                return data


def _compile(template, text, filename, generate_magic_comment):
    lexer = template.lexer_cls(
        text,
        filename,
        disable_unicode=template.disable_unicode,
        input_encoding=template.input_encoding,
        preprocessor=template.preprocessor,
    )
    node = lexer.parse()
    source = codegen.compile(
        node,
        template.uri,
        filename,
        default_filters=template.default_filters,
        buffer_filters=template.buffer_filters,
        imports=template.imports,
        future_imports=template.future_imports,
        source_encoding=lexer.encoding,
        generate_magic_comment=generate_magic_comment,
        disable_unicode=template.disable_unicode,
        strict_undefined=template.strict_undefined,
        enable_loop=template.enable_loop,
        reserved_names=template.reserved_names,
    )
    return source, lexer


def _compile_text(template, text, filename):
    identifier = template.module_id
    source, lexer = _compile(
        template,
        text,
        filename,
        generate_magic_comment=template.disable_unicode,
    )

    cid = identifier
    if not compat.py3k and isinstance(cid, compat.text_type):
        cid = cid.encode()
    module = types.ModuleType(cid)
    code = compile(source, cid, "exec")

    # this exec() works for 2.4->3.3.
    exec(code, module.__dict__, module.__dict__)
    return (source, module)


def _compile_module_file(template, text, filename, outputpath, module_writer):
    source, lexer = _compile(
        template, text, filename, generate_magic_comment=True
    )

    if isinstance(source, compat.text_type):
        source = source.encode(lexer.encoding or "ascii")

    if module_writer:
        module_writer(source, outputpath)
    else:
        # make tempfiles in the same location as the ultimate
        # location.   this ensures they're on the same filesystem,
        # avoiding synchronization issues.
        (dest, name) = tempfile.mkstemp(dir=os.path.dirname(outputpath))

        os.write(dest, source)
        os.close(dest)
        shutil.move(name, outputpath)


def _get_module_info_from_callable(callable_):
    if compat.py3k:
        return _get_module_info(callable_.__globals__["__name__"])
    else:
        return _get_module_info(callable_.func_globals["__name__"])


def _get_module_info(filename):
    return ModuleInfo._modules[filename]