[PATCH 2/3] git-p4: parse marshal output "p4 -G" in p4 changes

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The option -G of p4 (python marshal output) gives more context about the
data being output. That's useful when using the command "change -o" as
we can distinguish between warning/error line and real change description.

This fixes the case where a p4 trigger for  "p4 change" is set and the command git-p4 submit is run.

Signed-off-by: Miguel Torroja <miguel.torroja@xxxxxxxxx>
---
 git-p4.py                  | 85 +++++++++++++++++++++++++++++++---------------
 t/t9831-git-p4-triggers.sh |  2 +-
 2 files changed, 58 insertions(+), 29 deletions(-)

diff --git a/git-p4.py b/git-p4.py
index 8d151da91..e3a2791e0 100755
--- a/git-p4.py
+++ b/git-p4.py
@@ -879,8 +879,12 @@ def p4ChangesForPaths(depotPaths, changeRange, requestedBlockSize):
             cmd += ["%s...@%s" % (p, revisionRange)]
 
         # Insert changes in chronological order
-        for line in reversed(p4_read_pipe_lines(cmd)):
-            changes.add(int(line.split(" ")[1]))
+        for entry in reversed(p4CmdList(cmd)):
+            if entry.has_key('p4ExitCode'):
+                die('Error retrieving changes descriptions ({})'.format(entry['p4ExitCode']))
+            if not entry.has_key('change'):
+                continue
+            changes.add(int(entry['change']))
 
         if not block_size:
             break
@@ -1526,37 +1530,62 @@ class P4Submit(Command, P4UserMap):
 
         [upstream, settings] = findUpstreamBranchPoint()
 
-        template = ""
+        template = """\
+# A Perforce Change Specification.
+#
+#  Change:      The change number. 'new' on a new changelist.
+#  Date:        The date this specification was last modified.
+#  Client:      The client on which the changelist was created.  Read-only.
+#  User:        The user who created the changelist.
+#  Status:      Either 'pending' or 'submitted'. Read-only.
+#  Type:        Either 'public' or 'restricted'. Default is 'public'.
+#  Description: Comments about the changelist.  Required.
+#  Jobs:        What opened jobs are to be closed by this changelist.
+#               You may delete jobs from this list.  (New changelists only.)
+#  Files:       What opened files from the default changelist are to be added
+#               to this changelist.  You may delete files from this list.
+#               (New changelists only.)
+"""
+        files_list = []
         inFilesSection = False
+        change_entry = None
         args = ['change', '-o']
         if changelist:
             args.append(str(changelist))
-
-        for line in p4_read_pipe_lines(args):
-            if line.endswith("\r\n"):
-                line = line[:-2] + "\n"
-            if inFilesSection:
-                if line.startswith("\t"):
-                    # path starts and ends with a tab
-                    path = line[1:]
-                    lastTab = path.rfind("\t")
-                    if lastTab != -1:
-                        path = path[:lastTab]
-                        if settings.has_key('depot-paths'):
-                            if not [p for p in settings['depot-paths']
-                                    if p4PathStartsWith(path, p)]:
-                                continue
-                        else:
-                            if not p4PathStartsWith(path, self.depotPath):
-                                continue
+        for entry in p4CmdList(args):
+            if not entry.has_key('code'):
+                continue
+            if entry['code'] == 'stat':
+                change_entry = entry
+                break
+        if not change_entry:
+            die('Failed to decode output of p4 change -o')
+        for key, value in change_entry.iteritems():
+            if key.startswith('File'):
+                if settings.has_key('depot-paths'):
+                    if not [p for p in settings['depot-paths']
+                            if p4PathStartsWith(value, p)]:
+                        continue
                 else:
-                    inFilesSection = False
-            else:
-                if line.startswith("Files:"):
-                    inFilesSection = True
-
-            template += line
-
+                    if not p4PathStartsWith(value, self.depotPath):
+                        continue
+                files_list.append(value)
+                continue
+        # Output in the order expected by prepareLogMessage
+        for key in ['Change', 'Client', 'User', 'Status', 'Description', 'Jobs']:
+            if not change_entry.has_key(key):
+                continue
+            template += '\n'
+            template += key + ':'
+            if key == 'Description':
+                template += '\n'
+            for field_line in change_entry[key].splitlines():
+                template += '\t'+field_line+'\n'
+        if len(files_list) > 0:
+            template += '\n'
+            template += 'Files:\n'
+        for path in files_list:
+            template += '\t'+path+'\n'
         return template
 
     def edit_template(self, template_file):
diff --git a/t/t9831-git-p4-triggers.sh b/t/t9831-git-p4-triggers.sh
index 28cafe469..871544b1c 100755
--- a/t/t9831-git-p4-triggers.sh
+++ b/t/t9831-git-p4-triggers.sh
@@ -66,7 +66,7 @@ test_expect_failure 'import with extra info lines from verbose p4 trigger' '
 	)
 '
 
-test_expect_failure 'submit description with extra info lines from verbose p4 change trigger' '
+test_expect_success 'submit description with extra info lines from verbose p4 change trigger' '
 	test_when_finished cleanup_git &&
 	(
 		p4 triggers -i <<-EOF
-- 
2.11.0




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