Added a comment: Python script to recover git annex' lost files

doc/forum/files_got_replaced_by_broken_symblinks__44___how_to_get_them_back__63__/comment_7_24b09f1263f6bc6b219085c17ced915c._comment

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+[[!comment format=mdwn
+ username="simon.parzer@f837bbade0d93f560dc574b04e835b7875c4026f"
+ nickname="simon.parzer"
+ subject="Python script to recover git annex' lost files"
+ date="2016-05-05T12:01:46Z"
+ content="""
+Maybe someone else needs this at some point :|
+
+Use it at your own risk of course.
+
+    #!python3
+    
+    import os
+    import re
+    from shutil import copyfile
+    
+    targets = {}
+    
+    for path, dirs, files in os.walk('.'):
+        for f in files:
+            fp = os.path.join(path, f)
+            if fp.endswith('.py'): continue
+            fp_size = os.stat(fp).st_size
+            if fp_size < 72 or fp_size > 256: continue
+            with open(fp, 'r', encoding='latin1') as stream:
+                l = stream.readline()
+                hashmatch = re.match('.*SHA256E\-\w+\-\-(\w{16})', l)
+                if hashmatch:
+                    targets[hashmatch.group(1)] = os.path.abspath(fp)
+    
+    #print(targets)
+    
+    target = os.path.abspath('.')
+    while not os.path.exists('.git/annex/objects'):
+        os.chdir('..')
+    
+    for path, dirs, files in os.walk('.git/annex/objects'):
+        for f in files:
+            fp = os.path.join(path, f)
+            fp_size = os.stat(fp).st_size
+            if fp_size > 512:
+                hashmatch = re.match('.*SHA256E\-\w+\-\-(\w{16})', fp)
+                if hashmatch:
+                    hash = hashmatch.group(1)
+                    if hash in targets:
+                        print(fp, '->', targets[hash])
+                        copyfile(fp, targets[hash])
+
+"""]]