[PATCH 2/2] git-p4: Added copy detection support

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Added new config options:
    git-p4.detectCopies         - Enable copy detection.
    git-p4.detectCopiesHarder   - Find copies harder.
The detectCopies option should be set to the desired threshold value.
The detectCopiesHarder option receives a simple true/false value.
P4Submit is now able to process diff-tree C status.
---
 contrib/fast-import/git-p4 |   17 +++++++++++++++++
 1 files changed, 17 insertions(+), 0 deletions(-)

diff --git a/contrib/fast-import/git-p4 b/contrib/fast-import/git-p4
index ba18512..0ea3a44 100755
--- a/contrib/fast-import/git-p4
+++ b/contrib/fast-import/git-p4
@@ -620,6 +620,14 @@ class P4Submit(Command):
         else:
             diffOpts = ("", "-M")[self.detectRenames]
 
+        detectCopies = gitConfig("git-p4.detectCopies")
+        if len(detectCopies) > 0:
+            diffOpts += " -C%s" % detectCopies
+
+        detectCopiesHarder = gitConfig("git-p4.detectCopiesHarder")
+        if len(detectCopiesHarder) > 0 and detectCopiesHarder.lower() != "false":
+            diffOpts += " --find-copies-harder"
+
         diff = read_pipe_lines("git diff-tree -r %s \"%s^\" \"%s\"" % (diffOpts, id, id))
         filesToAdd = set()
         filesToDelete = set()
@@ -643,6 +651,15 @@ class P4Submit(Command):
                 filesToDelete.add(path)
                 if path in filesToAdd:
                     filesToAdd.remove(path)
+            elif modifier == "C":
+                src, dest = diff['src'], diff['dst']
+                p4_system("integrate -Dt \"%s\" \"%s\"" % (src, dest))
+                if diff['src_sha1'] != diff['dst_sha1']:
+                    p4_system("edit \"%s\"" % (dest))
+                if isModeExecChanged(diff['src_mode'], diff['dst_mode']):
+                    filesToChangeExecBit[dest] = diff['dst_mode']
+                os.unlink(dest)
+                editedFiles.add(dest)
             elif modifier == "R":
                 src, dest = diff['src'], diff['dst']
                 p4_system("integrate -Dt \"%s\" \"%s\"" % (src, dest))
-- 
1.7.2.3

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