1 files changed, 116 insertions, 0 deletions
diff --git a/debian/bin/genorig.py b/debian/bin/genorig.py
new file mode 100755
index 0000000..e01ca97
--- /dev/null
+++ b/debian/bin/genorig.py
@@ -0,0 +1,116 @@
+#!/usr/bin/env python
+
+import sys
+sys.path.append("debian/lib/python")
+
+import os, os.path, re, shutil
+from debian_linux.debian import Changelog, VersionLinux
+
+class Main(object):
+    def __init__(self, input_tar, input_patch, override_version):
+        self.log = sys.stdout.write
+
+        self.input_tar = input_tar
+        self.input_patch = input_patch
+
+        changelog = Changelog(version = VersionLinux)[0]
+        source = changelog.source
+        version = changelog.version
+
+        if override_version:
+            version = VersionLinux('%s-undef' % override_version)
+
+        self.log('Using source name %s, version %s\n' % (source, version.upstream))
+
+        self.orig = '%s-%s' % (source, version.upstream)
+        self.orig_tar = '%s_%s.orig.tar.gz' % (source, version.upstream)
+
+    def __call__(self):
+        import tempfile
+        self.dir = tempfile.mkdtemp(prefix = 'genorig', dir = 'debian')
+        try:
+            self.upstream_extract()
+            self.upstream_patch()
+            self.generate()
+            self.tar()
+        finally:
+            shutil.rmtree(self.dir)
+
+    def upstream_extract(self):
+        self.log("Extracting tarball %s\n" % self.input_tar)
+        match = re.match(r'(^|.*/)(?P<dir>linux-[\d.]+(-\S+)?)\.tar(\.(?P<extension>(bz2|gz)))?$', self.input_tar)
+        if not match:
+            raise RuntimeError("Can't identify name of tarball")
+        cmdline = ['tar -xf', self.input_tar, '-C', self.dir]
+        if match.group('extension') == 'bz2':
+            cmdline.append('-j')
+        elif match.group('extension') == 'gz':
+            cmdline.append('-z')
+        if os.spawnv(os.P_WAIT, '/bin/sh', ['sh', '-c', ' '.join(cmdline)]):
+            raise RuntimeError("Can't extract tarball")
+        os.rename(os.path.join(self.dir, match.group('dir')), os.path.join(self.dir, 'temp'))
+
+    def upstream_patch(self):
+        if self.input_patch is None:
+            return
+        self.log("Patching source with %s\n" % self.input_patch)
+        match = re.match(r'(^|.*/)patch-\d+\.\d+\.\d+(-\S+?)?(\.(?P<extension>(bz2|gz)))?$', self.input_patch)
+        if not match:
+            raise RuntimeError("Can't identify name of patch")
+        cmdline = []
+        if match.group('extension') == 'bz2':
+            cmdline.append('bzcat')
+        elif match.group('extension') == 'gz':
+            cmdline.append('zcat')
+        else:
+            cmdline.append('cat')
+        cmdline.append(self.input_patch)
+        cmdline.append('| (cd %s; patch -p1 -f -s -t --no-backup-if-mismatch)' % os.path.join(self.dir, 'temp'))
+        if os.spawnv(os.P_WAIT, '/bin/sh', ['sh', '-c', ' '.join(cmdline)]):
+            raise RuntimeError("Can't patch source")
+
+    def generate(self):
+        self.log("Generate orig\n")
+        orig = os.path.join(self.dir, self.orig, 'kbuild')
+        temp = os.path.join(self.dir, 'temp')
+        os.makedirs(os.path.join(orig, 'include', 'linux'))
+        for i in 'COPYING', 'Kbuild', 'Makefile':
+            shutil.copyfile(os.path.join(temp, i), os.path.join(orig, i))
+        for i in 'input.h', 'license.h', 'mod_devicetable.h':
+            shutil.copyfile(os.path.join(temp, 'include', 'linux', i), os.path.join(orig, 'include', 'linux', i))
+        shutil.copytree(os.path.join(temp, 'scripts'), os.path.join(orig, 'scripts'))
+
+    def tar(self):
+        out = os.path.join("../orig", self.orig_tar)
+        try:
+            os.mkdir("../orig")
+        except OSError: pass
+        try:
+            os.stat(out)
+            raise RuntimeError("Destination already exists")
+        except OSError: pass
+        self.log("Generate tarball %s\n" % out)
+        cmdline = ['tar -czf', out, '-C', self.dir, self.orig]
+        try:
+            if os.spawnv(os.P_WAIT, '/bin/sh', ['sh', '-c', ' '.join(cmdline)]):
+                raise RuntimeError("Can't patch source")
+            os.chmod(out, 0644)
+        except:
+            try:
+                os.unlink(out)
+            except OSError:
+                pass
+            raise
+
+if __name__ == '__main__':
+    from optparse import OptionParser
+    parser = OptionParser(usage = "%prog [OPTION]... TAR [PATCH]")
+    parser.add_option("-V", "--override-version", dest = "override_version", help = "Override version", metavar = "VERSION")
+    options, args = parser.parse_args()
+
+    input_tar = args[0]
+    input_patch = None
+    if len(args) > 1:
+        input_patch = args[1]
+
+    Main(input_tar, input_patch, options.override_version)()