[PATCH v2 2/2] git-p4.py: support Python 2.4
From: Brandon Casey <drafnel@gmail.com>
Python 2.4 lacks the following features:
subprocess.check_call
struct.pack_into
Take a cue from 460d1026 and provide an implementation of the CalledProcessError exception. Then replace the calls to subproccess.check_call with calls to subprocess.call that check the return status and raise a CalledProcessError exception if necessary.
The struct.pack_into in t/9802 can be converted into a single struct.pack call which is available in Python 2.4.
Signed-off-by: Brandon Casey <bcasey@nvidia.com>
Acked-by: Pete Wyckoff <pw@padd.com>
---
On 1/26/2013 4:48 AM, Pete Wyckoff wrote:
> One stray semicolon.
Fixed.
-Brandon
INSTALL | 2 +-
git-p4.py | 27 ++++++++++++++++++++++++---
t/t9802-git-p4-filetype.sh | 11 ++++++-----
3 files changed, 31 insertions(+), 9 deletions(-)
Show changes to 3 files +31 −9
INSTALL, git-p4.py, t/t9802-git-p4-filetype.sh
diff --git a/INSTALL b/INSTALL
index fc723b3..b96e16d 100644
--- a/INSTALL
+++ b/INSTALL
@@ -131,7 +131,7 @@ Issues of note:
use English. Under autoconf the configure script will do this
automatically if it can't find libintl on the system.
- - Python version 2.5 or later is needed to use the git-p4
+ - Python version 2.4 or later is needed to use the git-p4
interface to Perforce.
- Some platform specific issues are dealt with Makefile rules,
diff --git a/git-p4.py b/git-p4.py
index de1a0b9..625a396 100755
--- a/git-p4.py
+++ b/git-p4.py
@@ -18,6 +18,21 @@ import optparse, os, marshal, subprocess, shelve
import tempfile, getopt, os.path, time, platform
import re, shutil
+try:
+ from subprocess import CalledProcessError
+except ImportError:
+ # from python2.7:subprocess.py
+ # Exception classes used by this module.
+ class CalledProcessError(Exception):
+ """This exception is raised when a process run by check_call() returns
+ a non-zero exit status. The exit status will be stored in the
+ returncode attribute."""
+ def __init__(self, returncode, cmd):
+ self.returncode = returncode
+ self.cmd = cmd
+ def __str__(self):
+ return "Command '%s' returned non-zero exit status %d" % (self.cmd, self.returncode)
+
verbose = False
# Only labels/tags matching this will be imported/exported
@@ -158,13 +173,17 @@ def system(cmd):
expand = isinstance(cmd,basestring)
if verbose:
sys.stderr.write("executing %s\n" % str(cmd))
- subprocess.check_call(cmd, shell=expand)
+ retcode = subprocess.call(cmd, shell=expand)
+ if retcode:
+ raise CalledProcessError(retcode, cmd)
def p4_system(cmd):
"""Specifically invoke p4 as the system command. """
real_cmd = p4_build_cmd(cmd)
expand = isinstance(real_cmd, basestring)
- subprocess.check_call(real_cmd, shell=expand)
+ retcode = subprocess.call(real_cmd, shell=expand)
+ if retcode:
+ raise CalledProcessError(retcode, real_cmd)
def p4_integrate(src, dest):
p4_system(["integrate", "-Dt", wildcard_encode(src), wildcard_encode(dest)])
@@ -3174,7 +3193,9 @@ class P4Clone(P4Sync):
init_cmd = [ "git", "init" ]
if self.cloneBare:
init_cmd.append("--bare")
- subprocess.check_call(init_cmd)
+ retcode = subprocess.call(init_cmd)
+ if retcode:
+ raise CalledProcessError(retcode, init_cmd)
if not P4Sync.run(self, depotPaths):
return False
diff --git a/t/t9802-git-p4-filetype.sh b/t/t9802-git-p4-filetype.sh
index 21924df..aae1a3f 100755
--- a/t/t9802-git-p4-filetype.sh
+++ b/t/t9802-git-p4-filetype.sh
@@ -105,12 +105,13 @@ build_gendouble() {
cat >gendouble.py <<-\EOF
import sys
import struct
- import array
- s = array.array("c", '\0' * 26)
- struct.pack_into(">L", s, 0, 0x00051607) # AppleDouble
- struct.pack_into(">L", s, 4, 0x00020000) # version 2
- s.tofile(sys.stdout)
+ s = struct.pack(">LL18s",
+ 0x00051607, # AppleDouble
+ 0x00020000, # version 2
+ "" # pad to 26 bytes
+ )
+ sys.stdout.write(s)
EOF
}
--
1.8.1.1.442.g413e803
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