[svn r58190] adding arigo/hacks/svnwcrevert as a py.svnwcrevert script on py lib trunk

--HG--
branch : trunk

py/cmdline/pysvnwcrevert.py

@@ -0,0 +1,49 @@
+#! /usr/bin/env python
+"""\
+py.svnwcrevert WCPATH
+
+Running this script and then 'svn up' puts the working copy WCPATH in a state
+as clean as a fresh check-out.
+
+WARNING: you'll loose all local changes, obviously!
+
+This script deletes all files that have been modified
+or that svn doesn't explicitly know about, including svn:ignored files
+(like .pyc files, hint hint).
+
+The goal of this script is to leave the working copy with some files and
+directories possibly missing, but - most importantly - in a state where
+the following 'svn up' won't just crash.
+"""
+
+import py
+
+def kill(p, root):
+    print '<    %s' % (p.relto(root),)
+    p.remove(rec=1)
+
+def svnwcrevert(path, root=None):
+    if root is None:
+        root = path
+    wcpath = py.path.svnwc(path)
+    try:
+        st = wcpath.status()
+    except ValueError:   # typically, "bad char in wcpath"
+        kill(path, root)
+        return
+    for p in path.listdir():
+        if p.basename == '.svn':
+            continue
+        wcp = py.path.svnwc(p)
+        if wcp not in st.unchanged and wcp not in st.external:
+            kill(p, root)
+        elif p.check(dir=1):
+            svnwcrevert(p, root)
+
+
+def main():
+    import sys
+    if len(sys.argv) != 2:
+        print __doc__
+        sys.exit(2)
+    svnwcrevert(py.path.local(sys.argv[1]))