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| author | darylm503 <darylm503@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-04-16 22:12:42 +0000 |
|---|---|---|
| committer | darylm503 <darylm503@6f19259b-4bc3-4df7-8a09-765794883524> | 2012-04-16 22:12:42 +0000 |
| commit | 4710c53dcad1ebf3755f3efb9e80ac24bd72a9b2 (patch) | |
| tree | 2d17d2388a78082e32f6a97120d707328143543b /AppPkg/Applications/Python/Python-2.7.2/Lib/lib2to3/pgen2/literals.py | |
| parent | cbc6b5e54599c7391ece99ad3c5313f4dd4ddda6 (diff) | |
| download | edk2-platforms-4710c53dcad1ebf3755f3efb9e80ac24bd72a9b2.tar.xz | |
AppPkg/Applications/Python: Add Python 2.7.2 sources since the release of Python 2.7.3 made them unavailable from the python.org web site.
These files are a subset of the python-2.7.2.tgz distribution from python.org. Changed files from PyMod-2.7.2 have been copied into the corresponding directories of this tree, replacing the original files in the distribution.
Signed-off-by: daryl.mcdaniel@intel.com
git-svn-id: https://edk2.svn.sourceforge.net/svnroot/edk2/trunk/edk2@13197 6f19259b-4bc3-4df7-8a09-765794883524
Diffstat (limited to 'AppPkg/Applications/Python/Python-2.7.2/Lib/lib2to3/pgen2/literals.py')
| -rw-r--r-- | AppPkg/Applications/Python/Python-2.7.2/Lib/lib2to3/pgen2/literals.py | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/AppPkg/Applications/Python/Python-2.7.2/Lib/lib2to3/pgen2/literals.py b/AppPkg/Applications/Python/Python-2.7.2/Lib/lib2to3/pgen2/literals.py new file mode 100644 index 0000000000..09b2b8e1da --- /dev/null +++ b/AppPkg/Applications/Python/Python-2.7.2/Lib/lib2to3/pgen2/literals.py @@ -0,0 +1,60 @@ +# Copyright 2004-2005 Elemental Security, Inc. All Rights Reserved.
+# Licensed to PSF under a Contributor Agreement.
+
+"""Safely evaluate Python string literals without using eval()."""
+
+import re
+
+simple_escapes = {"a": "\a",
+ "b": "\b",
+ "f": "\f",
+ "n": "\n",
+ "r": "\r",
+ "t": "\t",
+ "v": "\v",
+ "'": "'",
+ '"': '"',
+ "\\": "\\"}
+
+def escape(m):
+ all, tail = m.group(0, 1)
+ assert all.startswith("\\")
+ esc = simple_escapes.get(tail)
+ if esc is not None:
+ return esc
+ if tail.startswith("x"):
+ hexes = tail[1:]
+ if len(hexes) < 2:
+ raise ValueError("invalid hex string escape ('\\%s')" % tail)
+ try:
+ i = int(hexes, 16)
+ except ValueError:
+ raise ValueError("invalid hex string escape ('\\%s')" % tail)
+ else:
+ try:
+ i = int(tail, 8)
+ except ValueError:
+ raise ValueError("invalid octal string escape ('\\%s')" % tail)
+ return chr(i)
+
+def evalString(s):
+ assert s.startswith("'") or s.startswith('"'), repr(s[:1])
+ q = s[0]
+ if s[:3] == q*3:
+ q = q*3
+ assert s.endswith(q), repr(s[-len(q):])
+ assert len(s) >= 2*len(q)
+ s = s[len(q):-len(q)]
+ return re.sub(r"\\(\'|\"|\\|[abfnrtv]|x.{0,2}|[0-7]{1,3})", escape, s)
+
+def test():
+ for i in range(256):
+ c = chr(i)
+ s = repr(c)
+ e = evalString(s)
+ if e != c:
+ print i, c, s, e
+
+
+if __name__ == "__main__":
+ test()
|