backportpackage: Allow specifying a working directory

backportpackage

@@ -73,6 +73,11 @@ def parse(args):
                  default=None,
                  help='Package version to backport (or verify)',
                  metavar='VERSION')
+    p.add_option('-w', '--workdir',
+                 dest='workdir',
+                 default=None,
+                 help='Specify a working directory (default: temporary dir)',
+                 metavar='WORKDIR')
     p.add_option('-l', '--launchpad',
                  dest='launchpad',
                  default='production',
@@ -238,7 +243,14 @@ def main(args):
         except:
             error('No destination release specified and unable to guess yours')
 
-    workdir = tempfile.mkdtemp(prefix='backportpackage-')
+    if opts.workdir:
+        workdir = os.path.expanduser(opts.workdir)
+    else:
+        workdir = tempfile.mkdtemp(prefix='backportpackage-')
+
+    if not os.path.exists(workdir):
+        os.makedirs(workdir)
+
     try:
         dscfile = fetch_package(lp,
                                 workdir,
@@ -255,7 +267,8 @@ def main(args):
                         opts.builder,
                         opts.upload)
     finally:
-        shutil.rmtree(workdir)
+        if not opts.workdir:
+            shutil.rmtree(workdir)
 
 if __name__ == '__main__':
     sys.exit(main(sys.argv))

doc/backportpackage.1

@@ -44,6 +44,12 @@ package\fR in \fISOURCE\fR is the same as \fIVERSION\fR. Otherwise,
 package\fR, regardless of the release in which it was published (or if
 that version is still current).
 .TP
+.B \-w \fIWORKDIR\fR, \-\-workdir=\fIWORKDIR\fR
+If \fIWORKDIR\fR is specified, then all files are downloaded,
+unpacked, built into, and otherwise manipulated in
+\fIWORKDIR\fR. Otherwise, a temporary directory is created, which is
+deleted before \fIbackportpackage\fR exits.
+.TP
 .B \-l \fIINSTANCE\fR, \-\-launchpad=\fIINSTANCE\fR
 Use the specified instance of Launchpad (e.g. "staging"), instead of
 the default of "production".
@@ -67,17 +73,19 @@ The default builder for Ubuntu development tools that support it
 \fBpbuilder\fR(8) is used.
 .SH EXAMPLES
 Test-build in your PPA a backport of znc from the current development
-release to your workstation's release:
+release to your workstation's release, deleting the build products
+afterwards:
 .IP
 .nf
 .B backportpackage -u ppa:\fIuser\fR/\fIppa\fB znc
 .fi
 .PP
 Backport squashfs-tools from Maverick to both Karmic and Lucid and
-test-build both locally:
+test-build both locally, leaving all build products in the current
+working directory:
 .IP
 .nf
-.B backportpackage -b -s maverick -d karmic -d lucid squashfs-tools
+.B backportpackage -b -s maverick -d karmic -d lucid -w . squashfs-tools
 .fi
 .SH AUTHOR
 \fBbackportpackage\fR and this manpage were written by Evan Broder