get: adjust for python 3 and test there

[bup.git] / lib / bup / drecurse.py

diff --git a/lib/bup/drecurse.py b/lib/bup/drecurse.py
index d4c4d4cf00131a9b6d66988028374dad953aa9b8..1d9a4e14b5e5d91c3951acd587c88be619955319 100644 (file)
--- a/lib/bup/drecurse.py
+++ b/lib/bup/drecurse.py
@@ -1,10 +1,20 @@
+
+from __future__ import absolute_import
 import stat, os
-from bup.helpers import *
+
+from bup.helpers import add_error, should_rx_exclude_path, debug1, resolve_parent
+from bup.io import path_msg
+import bup.xstat as xstat
+
 
 try:
     O_LARGEFILE = os.O_LARGEFILE
 except AttributeError:
     O_LARGEFILE = 0
+try:
+    O_NOFOLLOW = os.O_NOFOLLOW
+except AttributeError:
+    O_NOFOLLOW = 0
 
 
 # the use of fchdir() and lstat() is for two reasons:
@@ -13,8 +23,7 @@ except AttributeError:
 class OsFile:
     def __init__(self, path):
         self.fd = None
-        self.fd = os.open(path, 
-                          os.O_RDONLY|O_LARGEFILE|os.O_NOFOLLOW|os.O_NDELAY)
+        self.fd = os.open(path, os.O_RDONLY|O_LARGEFILE|O_NOFOLLOW|os.O_NDELAY)
         
     def __del__(self):
         if self.fd:
@@ -26,63 +35,81 @@ class OsFile:
         os.fchdir(self.fd)
 
     def stat(self):
-        return os.fstat(self.fd)
+        return xstat.fstat(self.fd)
 
 
 _IFMT = stat.S_IFMT(0xffffffff)  # avoid function call in inner loop
 def _dirlist():
     l = []
-    for n in os.listdir('.'):
+    for n in os.listdir(b'.'):
         try:
-            st = os.lstat(n)
-        except OSError, e:
-            add_error(Exception('%s: %s' % (realpath(n), str(e))))
+            st = xstat.lstat(n)
+        except OSError as e:
+            add_error(Exception('%s: %s' % (resolve_parent(n), str(e))))
             continue
         if (st.st_mode & _IFMT) == stat.S_IFDIR:
-            n += '/'
+            n += b'/'
         l.append((n,st))
     l.sort(reverse=True)
     return l
 
 
-def _recursive_dirlist(prepend, xdev, bup_dir=None):
+def _recursive_dirlist(prepend, xdev, bup_dir=None,
+                       excluded_paths=None,
+                       exclude_rxs=None,
+                       xdev_exceptions=frozenset()):
     for (name,pst) in _dirlist():
-        if name.endswith('/'):
-            if xdev != None and pst.st_dev != xdev:
-                log('Skipping %r: different filesystem.\n' % (prepend+name))
+        path = prepend + name
+        if excluded_paths:
+            if os.path.normpath(path) in excluded_paths:
+                debug1('Skipping %r: excluded.\n' % path_msg(path))
                 continue
+        if exclude_rxs and should_rx_exclude_path(path, exclude_rxs):
+            continue
+        if name.endswith(b'/'):
             if bup_dir != None:
-                if os.path.normpath(prepend+name) == bup_dir:
-                    log('Skipping BUP_DIR.\n')
+                if os.path.normpath(path) == bup_dir:
+                    debug1('Skipping BUP_DIR.\n')
                     continue
-            try:
-                OsFile(name).fchdir()
-            except OSError, e:
-                add_error('%s: %s' % (prepend, e))
+            if xdev != None and pst.st_dev != xdev \
+               and path not in xdev_exceptions:
+                debug1('Skipping contents of %r: different filesystem.\n'
+                       % path_msg(path))
             else:
-                for i in _recursive_dirlist(prepend=prepend+name, xdev=xdev,
-                                            bup_dir=bup_dir):
-                    yield i
-                os.chdir('..')
-        yield (prepend + name, pst)
+                try:
+                    OsFile(name).fchdir()
+                except OSError as e:
+                    add_error('%s: %s' % (prepend, e))
+                else:
+                    for i in _recursive_dirlist(prepend=prepend+name, xdev=xdev,
+                                                bup_dir=bup_dir,
+                                                excluded_paths=excluded_paths,
+                                                exclude_rxs=exclude_rxs,
+                                                xdev_exceptions=xdev_exceptions):
+                        yield i
+                    os.chdir(b'..')
+        yield (path, pst)
 
 
-def recursive_dirlist(paths, xdev, bup_dir=None):
-    startdir = OsFile('.')
+def recursive_dirlist(paths, xdev, bup_dir=None,
+                      excluded_paths=None,
+                      exclude_rxs=None,
+                      xdev_exceptions=frozenset()):
+    startdir = OsFile(b'.')
     try:
         assert(type(paths) != type(''))
         for path in paths:
             try:
-                pst = os.lstat(path)
+                pst = xstat.lstat(path)
                 if stat.S_ISLNK(pst.st_mode):
                     yield (path, pst)
                     continue
-            except OSError, e:
+            except OSError as e:
                 add_error('recursive_dirlist: %s' % e)
                 continue
             try:
                 pfile = OsFile(path)
-            except OSError, e:
+            except OSError as e:
                 add_error(e)
                 continue
             pst = pfile.stat()
@@ -92,9 +119,12 @@ def recursive_dirlist(paths, xdev, bup_dir=None):
                 xdev = None
             if stat.S_ISDIR(pst.st_mode):
                 pfile.fchdir()
-                prepend = os.path.join(path, '')
+                prepend = os.path.join(path, b'')
                 for i in _recursive_dirlist(prepend=prepend, xdev=xdev,
-                                            bup_dir=bup_dir):
+                                            bup_dir=bup_dir,
+                                            excluded_paths=excluded_paths,
+                                            exclude_rxs=exclude_rxs,
+                                            xdev_exceptions=xdev_exceptions):
                     yield i
                 startdir.fchdir()
             else: