Author: stsp
Date: Mon Oct 25 18:55:10 2010
New Revision: 1027232

URL: http://svn.apache.org/viewvc?rev=1027232&view=rev
Log:
Make svn patch choose automatically between the old and new target names
provided in the patch file.

* subversion/libsvn_client/patch.c
  (choose_target_filename): New helper function.
  (init_patch_target): Use the new helper function to pick a suitable
   target filename.

* subversion/tests/cmdline/patch_tests.py
  (patch_old_target_names): Re-add this test by reverse-merging from r1027222,
   and dropping the --old-patch-target-names option since it "just works" now.
  (test_list): Remove XFail marker from patch_reverse_revert which now passes.

Modified:
    subversion/trunk/subversion/libsvn_client/patch.c
    subversion/trunk/subversion/tests/cmdline/patch_tests.py

Modified: subversion/trunk/subversion/libsvn_client/patch.c
URL: 
http://svn.apache.org/viewvc/subversion/trunk/subversion/libsvn_client/patch.c?rev=1027232&r1=1027231&r2=1027232&view=diff
==============================================================================
--- subversion/trunk/subversion/libsvn_client/patch.c (original)
+++ subversion/trunk/subversion/libsvn_client/patch.c Mon Oct 25 18:55:10 2010
@@ -528,6 +528,36 @@ init_prop_target(prop_patch_target_t **p
   return SVN_NO_ERROR;
 }
 
+/* Return a suitable filename for the target of PATCH.
+ * Examine the ``old'' and ``new'' file names, and choose the file name
+ * with the fewest path components, the shortest basename, and the shortest
+ * total file name length (in that order). In case of a tie, return the new
+ * filename. This heuristic is also used by Larry Wall's UNIX patch (except
+ * that it prompts for a filename in case of a tie). */
+static const char *
+choose_target_filename(const svn_patch_t *patch)
+{
+  apr_size_t old;
+  apr_size_t new;
+
+  old = svn_path_component_count(patch->old_filename);
+  new = svn_path_component_count(patch->new_filename);
+
+  if (old == new)
+    {
+      old = strlen(svn_dirent_basename(patch->old_filename, NULL));
+      new = strlen(svn_dirent_basename(patch->new_filename, NULL));
+
+      if (old == new)
+        {
+          old = strlen(patch->old_filename);
+          new = strlen(patch->new_filename);
+        }
+    }
+
+  return (old < new) ? patch->old_filename : patch->new_filename;
+}
+
 /* Attempt to initialize a *PATCH_TARGET structure for a target file
  * described by PATCH. Use working copy context WC_CTX.
  * STRIP_COUNT specifies the number of leading path components
@@ -589,7 +619,7 @@ init_patch_target(patch_target_t **patch
   target->prop_targets = apr_hash_make(result_pool);
   target->pool = result_pool;
 
-  SVN_ERR(resolve_target_path(target, patch->new_filename,
+  SVN_ERR(resolve_target_path(target, choose_target_filename(patch),
                               base_dir, strip_count, prop_changes_only,
                               wc_ctx, result_pool, scratch_pool));
   if (! target->skipped)

Modified: subversion/trunk/subversion/tests/cmdline/patch_tests.py
URL: 
http://svn.apache.org/viewvc/subversion/trunk/subversion/tests/cmdline/patch_tests.py?rev=1027232&r1=1027231&r2=1027232&view=diff
==============================================================================
--- subversion/trunk/subversion/tests/cmdline/patch_tests.py (original)
+++ subversion/trunk/subversion/tests/cmdline/patch_tests.py Mon Oct 25 
18:55:10 2010
@@ -3031,6 +3031,133 @@ def patch_git_empty_files(sbox):
                                        None, # expected err
                                        1, # check-props
                                        1) # dry-run
+
+def patch_old_target_names(sbox):
+  "patch using old target names"
+
+  sbox.build()
+  wc_dir = sbox.wc_dir
+
+  patch_file_path = make_patch_path(sbox)
+  mu_path = os.path.join(wc_dir, 'A', 'mu')
+
+  mu_contents = [
+    "Dear internet user,\n",
+    "\n",
+    "We wish to congratulate you over your email success in our computer\n",
+    "Balloting. This is a Millennium Scientific Electronic Computer Draw\n",
+    "in which email addresses were used. All participants were selected\n",
+    "through a computer ballot system drawn from over 100,000 company\n",
+    "and 50,000,000 individual email addresses from all over the world.\n",
+    "\n",
+    "Your email address drew and have won the sum of  750,000 Euros\n",
+    "( Seven Hundred and Fifty Thousand Euros) in cash credited to\n",
+    "file with\n",
+    "    REFERENCE NUMBER: ESP/WIN/008/05/10/MA;\n",
+    "    WINNING NUMBER : 14-17-24-34-37-45-16\n",
+    "    BATCH NUMBERS :\n",
+    "    EULO/1007/444/606/08;\n",
+    "    SERIAL NUMBER: 45327\n",
+    "and PROMOTION DATE: 13th June. 2009\n",
+    "\n",
+    "To claim your winning prize, you are to contact the appointed\n",
+    "agent below as soon as possible for the immediate release of your\n",
+    "winnings with the below details.\n",
+    "\n",
+    "Again, we wish to congratulate you over your email success in our\n"
+    "computer Balloting.\n"
+  ]
+
+  # Set mu contents
+  svntest.main.file_write(mu_path, ''.join(mu_contents))
+  expected_output = svntest.wc.State(wc_dir, {
+    'A/mu'       : Item(verb='Sending'),
+    })
+  expected_status = svntest.actions.get_virginal_state(wc_dir, 1)
+  expected_status.tweak('A/mu', wc_rev=2)
+  svntest.actions.run_and_verify_commit(wc_dir, expected_output,
+                                        expected_status, None, wc_dir)
+
+  # Apply patch
+
+  unidiff_patch = [
+    "--- A/mu  2009-06-24 15:23:55.000000000 +0100\n",
+    "+++ A/mu.new      2009-06-24 15:21:23.000000000 +0100\n",
+    "@@ -6,6 +6,9 @@\n",
+    " through a computer ballot system drawn from over 100,000 company\n",
+    " and 50,000,000 individual email addresses from all over the world.\n",
+    " \n",
+    "+It is a promotional program aimed at encouraging internet users;\n",
+    "+therefore you do not need to buy ticket to enter for it.\n",
+    "+\n",
+    " Your email address drew and have won the sum of  750,000 Euros\n",
+    " ( Seven Hundred and Fifty Thousand Euros) in cash credited to\n",
+    " file with\n",
+    "@@ -14,11 +17,8 @@\n",
+    "     BATCH NUMBERS :\n",
+    "     EULO/1007/444/606/08;\n",
+    "     SERIAL NUMBER: 45327\n",
+    "-and PROMOTION DATE: 13th June. 2009\n",
+    "+and PROMOTION DATE: 14th June. 2009\n",
+    " \n",
+    " To claim your winning prize, you are to contact the appointed\n",
+    " agent below as soon as possible for the immediate release of your\n",
+    " winnings with the below details.\n",
+    "-\n",
+    "-Again, we wish to congratulate you over your email success in our\n",
+    "-computer Balloting.\n",
+  ]
+
+  svntest.main.file_write(patch_file_path, ''.join(unidiff_patch))
+
+  mu_contents = [
+    "Dear internet user,\n",
+    "\n",
+    "We wish to congratulate you over your email success in our computer\n",
+    "Balloting. This is a Millennium Scientific Electronic Computer Draw\n",
+    "in which email addresses were used. All participants were selected\n",
+    "through a computer ballot system drawn from over 100,000 company\n",
+    "and 50,000,000 individual email addresses from all over the world.\n",
+    "\n",
+    "It is a promotional program aimed at encouraging internet users;\n",
+    "therefore you do not need to buy ticket to enter for it.\n",
+    "\n",
+    "Your email address drew and have won the sum of  750,000 Euros\n",
+    "( Seven Hundred and Fifty Thousand Euros) in cash credited to\n",
+    "file with\n",
+    "    REFERENCE NUMBER: ESP/WIN/008/05/10/MA;\n",
+    "    WINNING NUMBER : 14-17-24-34-37-45-16\n",
+    "    BATCH NUMBERS :\n",
+    "    EULO/1007/444/606/08;\n",
+    "    SERIAL NUMBER: 45327\n",
+    "and PROMOTION DATE: 14th June. 2009\n",
+    "\n",
+    "To claim your winning prize, you are to contact the appointed\n",
+    "agent below as soon as possible for the immediate release of your\n",
+    "winnings with the below details.\n",
+  ]
+
+  expected_output = [
+    'U         %s\n' % os.path.join(wc_dir, 'A', 'mu'),
+  ]
+
+  expected_disk = svntest.main.greek_state.copy()
+  expected_disk.tweak('A/mu', contents=''.join(mu_contents))
+
+  expected_status = svntest.actions.get_virginal_state(wc_dir, 1)
+  expected_status.tweak('A/mu', status='M ', wc_rev=2)
+
+  expected_skip = wc.State('', { })
+
+  svntest.actions.run_and_verify_patch(wc_dir, 
os.path.abspath(patch_file_path),
+                                       expected_output,
+                                       expected_disk,
+                                       expected_status,
+                                       expected_skip,
+                                       None, # expected err
+                                       1, # check-props
+                                       1) # dry-run
+
 def patch_reverse_revert(sbox):
   "revert a patch by reverse patching"
 
@@ -3259,7 +3386,8 @@ test_list = [ None,
               patch_prop_offset,
               patch_prop_with_fuzz,
               patch_git_empty_files,
-              XFail(patch_reverse_revert),
+              patch_old_target_names,
+              patch_reverse_revert,
             ]
 
 if __name__ == '__main__':


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