Mercurial Repositories > eric / file diff

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/DebugClients/Python3/coverage/codeunit.py	Mon Dec 28 16:03:33 2009 +0000
@@ -0,0 +1,107 @@
+"""Code unit (module) handling for Coverage."""
+
+import glob, os
+
+def code_unit_factory(morfs, file_locator, omit_prefixes=None):
+    """Construct a list of CodeUnits from polymorphic inputs.
+    
+    `morfs` is a module or a filename, or a list of same.
+    `file_locator` is a FileLocator that can help resolve filenames.
+    `omit_prefixes` is a list of prefixes.  CodeUnits that match those prefixes
+    will be omitted from the list.
+    
+    Returns a list of CodeUnit objects.
+    
+    """
+
+    # Be sure we have a list.
+    if not isinstance(morfs, (list, tuple)):
+        morfs = [morfs]
+    
+    # On Windows, the shell doesn't expand wildcards.  Do it here.
+    globbed = []
+    for morf in morfs:
+        if isinstance(morf, str) and ('?' in morf or '*' in morf):
+            globbed.extend(glob.glob(morf))
+        else:
+            globbed.append(morf)
+    morfs = globbed
+
+    code_units = [CodeUnit(morf, file_locator) for morf in morfs]
+    
+    if omit_prefixes:
+        prefixes = [file_locator.abs_file(p) for p in omit_prefixes]
+        filtered = []
+        for cu in code_units:
+            for prefix in prefixes:
+                if cu.name.startswith(prefix):
+                    break
+            else:
+                filtered.append(cu)
+    
+        code_units = filtered
+
+    return code_units
+
+
+class CodeUnit:
+    """Code unit: a filename or module.
+    
+    Instance attributes:
+    
+    `name` is a human-readable name for this code unit.
+    `filename` is the os path from which we can read the source.
+    `relative` is a boolean.
+    
+    """
+
+    def __init__(self, morf, file_locator):
+        if hasattr(morf, '__file__'):
+            f = morf.__file__
+        else:
+            f = morf
+        # .pyc files should always refer to a .py instead.
+        if f.endswith('.pyc'):
+            f = f[:-1]
+        self.filename = file_locator.canonical_filename(f)
+
+        if hasattr(morf, '__name__'):
+            n = modname = morf.__name__
+            self.relative = True
+        else:
+            n = os.path.splitext(morf)[0]
+            rel = file_locator.relative_filename(n)
+            if os.path.isabs(n):
+                self.relative = (rel != n)
+            else:
+                self.relative = True
+            n = rel
+            modname = None
+        self.name = n
+        self.modname = modname
+
+    def __repr__(self):
+        return "<CodeUnit name=%r filename=%r>" % (self.name, self.filename)
+
+    def __cmp__(self, other):
+        return cmp(self.name, other.name)
+
+    def flat_rootname(self):
+        """A base for a flat filename to correspond to this code unit.
+        
+        Useful for writing files about the code where you want all the files in
+        the same directory, but need to differentiate same-named files from
+        different directories.
+        
+        For example, the file a/b/c.py might return 'a_b_c'
+        
+        """
+        if self.modname:
+            return self.modname.replace('.', '_')
+        else:
+            root = os.path.splitdrive(os.path.splitext(self.name)[0])[1]
+            return root.replace('\\', '_').replace('/', '_')
+
+    def source_file(self):
+        """Return an open file for reading the source of the code unit."""
+        return open(self.filename)