Mercurial Repositories > eric / file comparison
comparison: DebugClients/Python3/coverage/codeunit.py
DebugClients/Python3/coverage/codeunit.py
- changeset 4491
- 0d8612e24fef
- parent 4487
- 4ba7a8ab24f2
- parent 4490
- 3f58261e7bb1
- child 4492
- 1a958c27b767
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| 4487:4ba7a8ab24f2 | 4491:0d8612e24fef |
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| 1 """Code unit (module) handling for Coverage.""" | |
| 2 | |
| 3 import glob, os | |
| 4 | |
| 5 from .backward import open_source, string_class, StringIO | |
| 6 from .misc import CoverageException | |
| 7 | |
| 8 | |
| 9 def code_unit_factory(morfs, file_locator): | |
| 10 """Construct a list of CodeUnits from polymorphic inputs. | |
| 11 | |
| 12 `morfs` is a module or a filename, or a list of same. | |
| 13 | |
| 14 `file_locator` is a FileLocator that can help resolve filenames. | |
| 15 | |
| 16 Returns a list of CodeUnit objects. | |
| 17 | |
| 18 """ | |
| 19 # Be sure we have a list. | |
| 20 if not isinstance(morfs, (list, tuple)): | |
| 21 morfs = [morfs] | |
| 22 | |
| 23 # On Windows, the shell doesn't expand wildcards. Do it here. | |
| 24 globbed = [] | |
| 25 for morf in morfs: | |
| 26 if isinstance(morf, string_class) and ('?' in morf or '*' in morf): | |
| 27 globbed.extend(glob.glob(morf)) | |
| 28 else: | |
| 29 globbed.append(morf) | |
| 30 morfs = globbed | |
| 31 | |
| 32 code_units = [CodeUnit(morf, file_locator) for morf in morfs] | |
| 33 | |
| 34 return code_units | |
| 35 | |
| 36 | |
| 37 class CodeUnit(object): | |
| 38 """Code unit: a filename or module. | |
| 39 | |
| 40 Instance attributes: | |
| 41 | |
| 42 `name` is a human-readable name for this code unit. | |
| 43 `filename` is the os path from which we can read the source. | |
| 44 `relative` is a boolean. | |
| 45 | |
| 46 """ | |
| 47 def __init__(self, morf, file_locator): | |
| 48 self.file_locator = file_locator | |
| 49 | |
| 50 if hasattr(morf, '__file__'): | |
| 51 f = morf.__file__ | |
| 52 else: | |
| 53 f = morf | |
| 54 # .pyc files should always refer to a .py instead. | |
| 55 if f.endswith('.pyc') or f.endswith('.pyo'): | |
| 56 f = f[:-1] | |
| 57 elif f.endswith('$py.class'): # Jython | |
| 58 f = f[:-9] + ".py" | |
| 59 self.filename = self.file_locator.canonical_filename(f) | |
| 60 | |
| 61 if hasattr(morf, '__name__'): | |
| 62 n = modname = morf.__name__ | |
| 63 self.relative = True | |
| 64 else: | |
| 65 n = os.path.splitext(morf)[0] | |
| 66 rel = self.file_locator.relative_filename(n) | |
| 67 if os.path.isabs(n): | |
| 68 self.relative = (rel != n) | |
| 69 else: | |
| 70 self.relative = True | |
| 71 n = rel | |
| 72 modname = None | |
| 73 self.name = n | |
| 74 self.modname = modname | |
| 75 | |
| 76 def __repr__(self): | |
| 77 return "<CodeUnit name=%r filename=%r>" % (self.name, self.filename) | |
| 78 | |
| 79 # Annoying comparison operators. Py3k wants __lt__ etc, and Py2k needs all | |
| 80 # of them defined. | |
| 81 | |
| 82 def __lt__(self, other): | |
| 83 return self.name < other.name | |
| 84 def __le__(self, other): | |
| 85 return self.name <= other.name | |
| 86 def __eq__(self, other): | |
| 87 return self.name == other.name | |
| 88 def __ne__(self, other): | |
| 89 return self.name != other.name | |
| 90 def __gt__(self, other): | |
| 91 return self.name > other.name | |
| 92 def __ge__(self, other): | |
| 93 return self.name >= other.name | |
| 94 | |
| 95 def flat_rootname(self): | |
| 96 """A base for a flat filename to correspond to this code unit. | |
| 97 | |
| 98 Useful for writing files about the code where you want all the files in | |
| 99 the same directory, but need to differentiate same-named files from | |
| 100 different directories. | |
| 101 | |
| 102 For example, the file a/b/c.py might return 'a_b_c' | |
| 103 | |
| 104 """ | |
| 105 if self.modname: | |
| 106 return self.modname.replace('.', '_') | |
| 107 else: | |
| 108 root = os.path.splitdrive(self.name)[1] | |
| 109 return root.replace('\\', '_').replace('/', '_').replace('.', '_') | |
| 110 | |
| 111 def source_file(self): | |
| 112 """Return an open file for reading the source of the code unit.""" | |
| 113 if os.path.exists(self.filename): | |
| 114 # A regular text file: open it. | |
| 115 return open_source(self.filename) | |
| 116 | |
| 117 # Maybe it's in a zip file? | |
| 118 source = self.file_locator.get_zip_data(self.filename) | |
| 119 if source is not None: | |
| 120 return StringIO(source) | |
| 121 | |
| 122 # Couldn't find source. | |
| 123 raise CoverageException( | |
| 124 "No source for code '%s'." % self.filename | |
| 125 ) | |
| 126 | |
| 127 def should_be_python(self): | |
| 128 """Does it seem like this file should contain Python? | |
| 129 | |
| 130 This is used to decide if a file reported as part of the exection of | |
| 131 a program was really likely to have contained Python in the first | |
| 132 place. | |
| 133 | |
| 134 """ | |
| 135 # Get the file extension. | |
| 136 _, ext = os.path.splitext(self.filename) | |
| 137 | |
| 138 # Anything named *.py* should be Python. | |
| 139 if ext.startswith('.py'): | |
| 140 return True | |
| 141 # A file with no extension should be Python. | |
| 142 if not ext: | |
| 143 return True | |
| 144 # Everything else is probably not Python. | |
| 145 return False |
