[PATCH v4 0/2] git-p4: handle "Translation of file content failed"

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Revision v4 of 4 in this series.

3 messages, 1 author, 2016-06-15 · open the first message on its own page

[PATCH v4 0/2] git-p4: handle "Translation of file content failed"

From: <hidden>
Date: 2016-06-15 23:06:37

From: Lars Schneider <redacted>

diff to v3:
* replace non portable "sed -i" call in test case (thanks Luke and Torsten!)
* use "test_expect_failure" in the first commit that adds the test case, flip it to "test_expect_success" in subsequent commit (thanks Eric and Luke!)
* rename test case from t9824... to t9825... to avoid clashes with "git-p4: add Git LFS backend for large file system" patch

Cheers,
Lars

Lars Schneider (2):
  git-p4: add test case for "Translation of file content failed" error
  git-p4: handle "Translation of file content failed"

 git-p4.py                                  | 27 +++++++++-------
 t/t9825-git-p4-handle-utf16-without-bom.sh | 50 ++++++++++++++++++++++++++++++
 2 files changed, 66 insertions(+), 11 deletions(-)
 create mode 100755 t/t9825-git-p4-handle-utf16-without-bom.sh

--
2.5.1

[PATCH v4 1/2] git-p4: add test case for "Translation of file content failed" error

From: <hidden>
Date: 2016-06-15 23:06:37

From: Lars Schneider <redacted>

A P4 repository can get into a state where it contains a file with
type UTF-16 that does not contain a valid UTF-16 BOM. If git-p4
attempts to retrieve the file then the process crashes with a
"Translation of file content failed" error.

More info here: http://answers.perforce.com/articles/KB/3117

Signed-off-by: Lars Schneider <redacted>
---
 t/t9825-git-p4-handle-utf16-without-bom.sh | 50 ++++++++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100755 t/t9825-git-p4-handle-utf16-without-bom.sh
diff --git a/t/t9825-git-p4-handle-utf16-without-bom.sh b/t/t9825-git-p4-handle-utf16-without-bom.sh
new file mode 100755
index 0000000..65c3c4e
--- /dev/null
+++ b/t/t9825-git-p4-handle-utf16-without-bom.sh
@@ -0,0 +1,50 @@
+#!/bin/sh
+
+test_description='git p4 handling of UTF-16 files without BOM'
+
+. ./lib-git-p4.sh
+
+UTF16="\227\000\227\000"
+
+test_expect_success 'start p4d' '
+	start_p4d
+'
+
+test_expect_success 'init depot with UTF-16 encoded file and artificially remove BOM' '
+	(
+		cd "$cli" &&
+		printf "$UTF16" >file1 &&
+		p4 add -t utf16 file1 &&
+		p4 submit -d "file1"
+	) &&
+
+	(
+		cd "db" &&
+		p4d -jc &&
+		# P4D automatically adds a BOM. Remove it here to make the file invalid.
+		sed -e "$ d" depot/file1,v >depot/file1,v.new &&
+		mv -- depot/file1,v.new depot/file1,v &&
+		printf "@$UTF16@" >>depot/file1,v &&
+		p4d -jrF checkpoint.1
+	)
+'
+
+test_expect_failure 'clone depot with invalid UTF-16 file in verbose mode' '
+	git p4 clone --dest="$git" --verbose //depot &&
+	test_when_finished cleanup_git &&
+	(
+		cd "$git" &&
+		printf "$UTF16" >expect &&
+		test_cmp_bin expect file1
+	)
+'
+
+test_expect_failure 'clone depot with invalid UTF-16 file in non-verbose mode' '
+	git p4 clone --dest="$git" //depot
+'
+
+test_expect_success 'kill p4d' '
+	kill_p4d
+'
+
+test_done
-- 
2.5.1

[PATCH v4 2/2] git-p4: handle "Translation of file content failed"

From: <hidden>
Date: 2016-06-15 23:06:37

From: Lars Schneider <redacted>

A P4 repository can get into a state where it contains a file with
type UTF-16 that does not contain a valid UTF-16 BOM. If git-p4
attempts to retrieve the file then the process crashes with a
"Translation of file content failed" error.

More info here: http://answers.perforce.com/articles/KB/3117

Fix this by detecting this error and retrieving the file as binary
instead. The result in Git is the same.

Known issue: This works only if git-p4 is executed in verbose mode.
In normal mode no exceptions are thrown and git-p4 just exits.

Signed-off-by: Lars Schneider <redacted>
---
 git-p4.py                                  | 27 ++++++++++++++++-----------
 t/t9825-git-p4-handle-utf16-without-bom.sh |  2 +-
 2 files changed, 17 insertions(+), 12 deletions(-)
diff --git a/git-p4.py b/git-p4.py
index 073f87b..5ae25a6 100755
--- a/git-p4.py
+++ b/git-p4.py
@@ -134,13 +134,11 @@ def read_pipe(c, ignore_error=False):
         sys.stderr.write('Reading pipe: %s\n' % str(c))
 
     expand = isinstance(c,basestring)
-    p = subprocess.Popen(c, stdout=subprocess.PIPE, shell=expand)
-    pipe = p.stdout
-    val = pipe.read()
-    if p.wait() and not ignore_error:
-        die('Command failed: %s' % str(c))
-
-    return val
+    p = subprocess.Popen(c, stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=expand)
+    (out, err) = p.communicate()
+    if p.returncode != 0 and not ignore_error:
+        die('Command failed: %s\nError: %s' % (str(c), err))
+    return out
 
 def p4_read_pipe(c, ignore_error=False):
     real_cmd = p4_build_cmd(c)
@@ -2186,10 +2184,17 @@ class P4Sync(Command, P4UserMap):
             # them back too.  This is not needed to the cygwin windows version,
             # just the native "NT" type.
             #
-            text = p4_read_pipe(['print', '-q', '-o', '-', "%s@%s" % (file['depotFile'], file['change']) ])
-            if p4_version_string().find("/NT") >= 0:
-                text = text.replace("\r\n", "\n")
-            contents = [ text ]
+            try:
+                text = p4_read_pipe(['print', '-q', '-o', '-', '%s@%s' % (file['depotFile'], file['change'])])
+            except Exception as e:
+                if 'Translation of file content failed' in str(e):
+                    type_base = 'binary'
+                else:
+                    raise e
+            else:
+                if p4_version_string().find('/NT') >= 0:
+                    text = text.replace('\r\n', '\n')
+                contents = [ text ]
 
         if type_base == "apple":
             # Apple filetype files will be streamed as a concatenation of
diff --git a/t/t9825-git-p4-handle-utf16-without-bom.sh b/t/t9825-git-p4-handle-utf16-without-bom.sh
index 65c3c4e..fd2edce 100755
--- a/t/t9825-git-p4-handle-utf16-without-bom.sh
+++ b/t/t9825-git-p4-handle-utf16-without-bom.sh
@@ -29,7 +29,7 @@ test_expect_success 'init depot with UTF-16 encoded file and artificially remove
 	)
 '
 
-test_expect_failure 'clone depot with invalid UTF-16 file in verbose mode' '
+test_expect_success 'clone depot with invalid UTF-16 file in verbose mode' '
 	git p4 clone --dest="$git" --verbose //depot &&
 	test_when_finished cleanup_git &&
 	(
-- 
2.5.1
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