add hg and python

1 files changed, 74 insertions, 0 deletions

diff --git a/sys/lib/python/glob.py b/sys/lib/python/glob.py
new file mode 100644
index 000000000..95656cc1a
--- /dev/null
+++ b/sys/lib/python/glob.py
@@ -0,0 +1,74 @@
+"""Filename globbing utility."""
+
+import os
+import fnmatch
+import re
+
+__all__ = ["glob", "iglob"]
+
+def glob(pathname):
+    """Return a list of paths matching a pathname pattern.
+
+    The pattern may contain simple shell-style wildcards a la fnmatch.
+
+    """
+    return list(iglob(pathname))
+
+def iglob(pathname):
+    """Return a list of paths matching a pathname pattern.
+
+    The pattern may contain simple shell-style wildcards a la fnmatch.
+
+    """
+    if not has_magic(pathname):
+        if os.path.lexists(pathname):
+            yield pathname
+        return
+    dirname, basename = os.path.split(pathname)
+    if not dirname:
+        for name in glob1(os.curdir, basename):
+            yield name
+        return
+    if has_magic(dirname):
+        dirs = iglob(dirname)
+    else:
+        dirs = [dirname]
+    if has_magic(basename):
+        glob_in_dir = glob1
+    else:
+        glob_in_dir = glob0
+    for dirname in dirs:
+        for name in glob_in_dir(dirname, basename):
+            yield os.path.join(dirname, name)
+
+# These 2 helper functions non-recursively glob inside a literal directory.
+# They return a list of basenames. `glob1` accepts a pattern while `glob0`
+# takes a literal basename (so it only has to check for its existence).
+
+def glob1(dirname, pattern):
+    if not dirname:
+        dirname = os.curdir
+    try:
+        names = os.listdir(dirname)
+    except os.error:
+        return []
+    if pattern[0]!='.':
+        names=filter(lambda x: x[0]!='.',names)
+    return fnmatch.filter(names,pattern)
+
+def glob0(dirname, basename):
+    if basename == '':
+        # `os.path.split()` returns an empty basename for paths ending with a
+        # directory separator.  'q*x/' should match only directories.
+        if os.path.isdir(dirname):
+            return [basename]
+    else:
+        if os.path.lexists(os.path.join(dirname, basename)):
+            return [basename]
+    return []
+
+
+magic_check = re.compile('[*?[]')
+
+def has_magic(s):
+    return magic_check.search(s) is not None