Mercurial Repositories > eric / file comparison
comparison: DebugClients/Python/coverage/codeunit.py
DebugClients/Python/coverage/codeunit.py
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- de9c2efb9d02
- child 31
- 744cd0b4b8cd
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| 1 """Code unit (module) handling for Coverage.""" | |
| 2 | |
| 3 import glob, os | |
| 4 | |
| 5 def code_unit_factory(morfs, file_locator, omit_prefixes=None): | |
| 6 """Construct a list of CodeUnits from polymorphic inputs. | |
| 7 | |
| 8 `morfs` is a module or a filename, or a list of same. | |
| 9 `file_locator` is a FileLocator that can help resolve filenames. | |
| 10 `omit_prefixes` is a list of prefixes. CodeUnits that match those prefixes | |
| 11 will be omitted from the list. | |
| 12 | |
| 13 Returns a list of CodeUnit objects. | |
| 14 | |
| 15 """ | |
| 16 | |
| 17 # Be sure we have a list. | |
| 18 if not isinstance(morfs, (list, tuple)): | |
| 19 morfs = [morfs] | |
| 20 | |
| 21 # On Windows, the shell doesn't expand wildcards. Do it here. | |
| 22 globbed = [] | |
| 23 for morf in morfs: | |
| 24 if isinstance(morf, basestring) and ('?' in morf or '*' in morf): | |
| 25 globbed.extend(glob.glob(morf)) | |
| 26 else: | |
| 27 globbed.append(morf) | |
| 28 morfs = globbed | |
| 29 | |
| 30 code_units = [CodeUnit(morf, file_locator) for morf in morfs] | |
| 31 | |
| 32 if omit_prefixes: | |
| 33 prefixes = [file_locator.abs_file(p) for p in omit_prefixes] | |
| 34 filtered = [] | |
| 35 for cu in code_units: | |
| 36 for prefix in prefixes: | |
| 37 if cu.name.startswith(prefix): | |
| 38 break | |
| 39 else: | |
| 40 filtered.append(cu) | |
| 41 | |
| 42 code_units = filtered | |
| 43 | |
| 44 return code_units | |
| 45 | |
| 46 | |
| 47 class CodeUnit: | |
| 48 """Code unit: a filename or module. | |
| 49 | |
| 50 Instance attributes: | |
| 51 | |
| 52 `name` is a human-readable name for this code unit. | |
| 53 `filename` is the os path from which we can read the source. | |
| 54 `relative` is a boolean. | |
| 55 | |
| 56 """ | |
| 57 | |
| 58 def __init__(self, morf, file_locator): | |
| 59 if hasattr(morf, '__file__'): | |
| 60 f = morf.__file__ | |
| 61 else: | |
| 62 f = morf | |
| 63 # .pyc files should always refer to a .py instead. | |
| 64 if f.endswith('.pyc'): | |
| 65 f = f[:-1] | |
| 66 self.filename = file_locator.canonical_filename(f) | |
| 67 | |
| 68 if hasattr(morf, '__name__'): | |
| 69 n = modname = morf.__name__ | |
| 70 self.relative = True | |
| 71 else: | |
| 72 n = os.path.splitext(morf)[0] | |
| 73 rel = file_locator.relative_filename(n) | |
| 74 if os.path.isabs(n): | |
| 75 self.relative = (rel != n) | |
| 76 else: | |
| 77 self.relative = True | |
| 78 n = rel | |
| 79 modname = None | |
| 80 self.name = n | |
| 81 self.modname = modname | |
| 82 | |
| 83 def __repr__(self): | |
| 84 return "<CodeUnit name=%r filename=%r>" % (self.name, self.filename) | |
| 85 | |
| 86 def __cmp__(self, other): | |
| 87 return cmp(self.name, other.name) | |
| 88 | |
| 89 def flat_rootname(self): | |
| 90 """A base for a flat filename to correspond to this code unit. | |
| 91 | |
| 92 Useful for writing files about the code where you want all the files in | |
| 93 the same directory, but need to differentiate same-named files from | |
| 94 different directories. | |
| 95 | |
| 96 For example, the file a/b/c.py might return 'a_b_c' | |
| 97 | |
| 98 """ | |
| 99 if self.modname: | |
| 100 return self.modname.replace('.', '_') | |
| 101 else: | |
| 102 root = os.path.splitdrive(os.path.splitext(self.name)[0])[1] | |
| 103 return root.replace('\\', '_').replace('/', '_') | |
| 104 | |
| 105 def source_file(self): | |
| 106 """Return an open file for reading the source of the code unit.""" | |
| 107 return open(self.filename) |
