1 files changed, 405 insertions, 0 deletions

diff --git a/meta/classes/patch.bbclass b/meta/classes/patch.bbclass
new file mode 100644
index 0000000000..0f0d6a686f
--- /dev/null
+++ b/meta/classes/patch.bbclass
@@ -0,0 +1,405 @@
+def patch_init():
+        import os, sys
+        
+        def md5sum(fname):
+                import md5, sys
+        
+                f = file(fname, 'rb')
+                m = md5.new()
+                while True:
+                        d = f.read(8096)
+                        if not d:
+                                break
+                        m.update(d)
+                f.close()
+                return m.hexdigest()
+        
+        class CmdError(Exception):
+                def __init__(self, exitstatus, output):
+                        self.status = exitstatus
+                        self.output = output
+        
+                def __str__(self):
+                        return "Command Error: exit status: %d  Output:\n%s" % (self.status, self.output)
+        
+        def runcmd(args, dir = None):
+                import commands
+        
+                if dir:
+                        olddir = os.path.abspath(os.curdir)
+                        os.chdir(dir)
+                        # print("cwd: %s -> %s" % (olddir, self.dir))
+        
+                try:
+                        args = [ commands.mkarg(str(arg)) for arg in args ]
+                        cmd = " ".join(args)
+                        # print("cmd: %s" % cmd)
+                        (exitstatus, output) = commands.getstatusoutput(cmd)
+                        if exitstatus != 0:
+                                raise CmdError(exitstatus >> 8, output)
+                        return output
+        
+                finally:
+                        if dir:
+                                os.chdir(olddir)
+        
+        class PatchError(Exception):
+                def __init__(self, patch, msg):
+                        self.msg = msg
+                        self.patch = patch
+        
+                def __str__(self):
+                        return "Patch Error: patch %s: %s" % (os.path.basename(self.patch.file), self.msg)
+        
+        import bb, bb.data, bb.fetch
+        
+        class PatchSet(object):
+                defaults = {
+                        "strippath": 1
+                }
+        
+                def __init__(self, dir, d):
+                        self.dir = dir
+                        self.d = d
+                        self.patches = []
+                        self._current = None
+        
+                def current(self):
+                        return self._current
+        
+                def Clean(self):
+                        """
+                        Clean out the patch set.  Generally includes unapplying all
+                        patches and wiping out all associated metadata.
+                        """
+                        raise NotImplementedError()
+        
+                def Import(self, patch, force):
+                        if not patch.get("file"):
+                                if not patch.get("remote"):
+                                        raise PatchError("Patch file must be specified in patch import.")
+                                else:
+                                        patch["file"] = bb.fetch.localpath(patch["remote"], self.d)
+        
+                        for param in PatchSet.defaults:
+                                if not patch.get(param):
+                                        patch[param] = PatchSet.defaults[param]
+        
+                        if patch.get("remote"):
+                                patch["file"] = bb.fetch.localpath(patch["remote"], self.d)
+        
+                        patch["filemd5"] = md5sum(patch["file"])
+        
+                def Push(self, force):
+                        raise NotImplementedError()
+        
+                def Pop(self, force):
+                        raise NotImplementedError()
+        
+                def Refresh(self, remote = None, all = None):
+                        raise NotImplementedError()
+        
+        
+        class QuiltTree(PatchSet):
+                def _runcmd(self, args):
+                        runcmd(["quilt"] + args, self.dir)
+        
+                def _quiltpatchpath(self, file):
+                        return os.path.join(self.dir, "patches", os.path.basename(file))
+        
+        
+                def __init__(self, dir, d):
+                        PatchSet.__init__(self, dir, d)
+                        self.initialized = False
+        
+                def Clean(self):
+                        try:
+                                self._runcmd(["pop", "-a", "-f"])
+                        except CmdError:
+                                if sys.exc_value.output.strip() == "No patch removed":
+                                        pass
+                                else:
+                                        raise PatchError("Unable to clean patches from tree:\n"+str(sys.exc_value))
+                        except OSError:
+                                if str(sys.exc_value).startswith('OSError: [Errno 2]'):
+                                        pass
+                        runcmd(["rm", "-rf", os.path.join(self.dir, "patches"), os.path.join(self.dir, ".pc")])
+                        self.initialized = True
+        
+                def InitFromDir(self):
+                        # read series -> self.patches
+                        seriespath = os.path.join(self.dir, 'patches', 'series')
+                        if not os.path.exists(self.dir):
+                                raise Exception("Error: %s does not exist." % self.dir)
+                        if os.path.exists(seriespath):
+                                series = file(seriespath, 'r')
+                                for line in series.readlines():
+                                        patch = {}
+                                        parts = line.strip().split()
+                                        patch["quiltfile"] = self._quiltpatchpath(parts[0])
+                                        patch["quiltfilemd5"] = md5sum(patch["quiltfile"])
+                                        if len(parts) > 1:
+                                                patch["strippath"] = parts[1][2:]
+                                        self.patches.append(patch)
+                                series.close()
+        
+                                # determine which patches are applied -> self._current
+                                try:
+                                        output = runcmd(["quilt", "applied"], self.dir)
+                                except CmdError:
+                                        if sys.exc_value.output.strip() == "No patches applied":
+                                                return
+                                        else:
+                                                raise sys.exc_value
+                                output = [val for val in output.split('\n') if not val.startswith('#')]
+                                for patch in self.patches:
+                                        if os.path.basename(patch["quiltfile"]) == output[-1]:
+                                                self._current = self.patches.index(patch)
+                        self.initialized = True
+        
+                def Import(self, patch, force = None):
+                        if not self.initialized:
+                                self.InitFromDir()
+                        PatchSet.Import(self, patch, force)
+        
+                        args = ["import", "-p", patch["strippath"]]
+                        if force:
+                                args.append("-f")
+                        args.append(patch["file"])
+        
+                        self._runcmd(args)
+        
+                        patch["quiltfile"] = self._quiltpatchpath(patch["file"])
+                        patch["quiltfilemd5"] = md5sum(patch["quiltfile"])
+        
+                        # TODO: determine if the file being imported:
+                        #          1) is already imported, and is the same
+                        #          2) is already imported, but differs
+        
+                        self.patches.insert(self._current or 0, patch)
+        
+        
+                def Push(self, force = None, all = None):
+                        # quilt push [-f]
+        
+                        args = ["push"]
+                        if force:
+                                args.append("-f")
+                        if all:
+                                args.append("-a")
+        
+                        self._runcmd(args)
+        
+                        if self._current is not None:
+                                self._current = self._current + 1
+                        else:
+                                self._current = 0
+        
+                def Pop(self, force = None, all = None):
+                        # quilt pop [-f]
+                        args = ["pop"]
+                        if force:
+                                args.append("-f")
+                        if all:
+                                args.append("-a")
+        
+                        self._runcmd(args)
+        
+                        if self._current == 0:
+                                self._current = None
+        
+                        if self._current is not None:
+                                self._current = self._current - 1
+        
+                def Refresh(self, **kwargs):
+                        if kwargs.get("remote"):
+                                patch = self.patches[kwargs["patch"]]
+                                if not patch:
+                                        raise PatchError("No patch found at index %s in patchset." % kwargs["patch"])
+                                (type, host, path, user, pswd, parm) = bb.decodeurl(patch["remote"])
+                                if type == "file":
+                                        import shutil
+                                        if not patch.get("file") and patch.get("remote"):
+                                                patch["file"] = bb.fetch.localpath(patch["remote"], self.d)
+        
+                                        shutil.copyfile(patch["quiltfile"], patch["file"])
+                                else:
+                                        raise PatchError(patch, "Unable to do a remote refresh of %s, unsupported remote url scheme %s." % (os.path.basename(patch["quiltfile"]), type))
+                        else:
+                                # quilt refresh
+                                args = ["refresh"]
+                                if kwargs.get("quiltfile"):
+                                        args.append(os.path.basename(kwargs["quiltfile"]))
+                                elif kwargs.get("patch"):
+                                        args.append(os.path.basename(self.patches[kwargs["patch"]]["quiltfile"]))
+                                self._runcmd(args)
+        
+        class Resolver(object):
+                def __init__(self, patchset):
+                        raise NotImplementedError()
+        
+                def Resolve(self):
+                        raise NotImplementedError()
+        
+                def Revert(self):
+                        raise NotImplementedError()
+        
+                def Finalize(self):
+                        raise NotImplementedError()
+        
+        # Patch resolver which relies on the user doing all the work involved in the
+        # resolution, with the exception of refreshing the remote copy of the patch
+        # files (the urls).
+        class UserResolver(Resolver):
+                def __init__(self, patchset):
+                        self.patchset = patchset
+        
+                # Force a push in the patchset, then drop to a shell for the user to
+                # resolve any rejected hunks
+                def Resolve(self):
+        
+                        olddir = os.path.abspath(os.curdir)
+                        os.chdir(self.patchset.dir)
+                        try:
+                                self.patchset.Push(True)
+                        except CmdError, v:
+                                # Patch application failed
+                                if sys.exc_value.output.strip() == "No patches applied":
+                                        return
+                                print(sys.exc_value)
+                                print('NOTE: dropping user into a shell, so that patch rejects can be fixed manually.')
+        
+                                os.system('/bin/sh')
+        
+                                # Construct a new PatchSet after the user's changes, compare the
+                                # sets, checking patches for modifications, and doing a remote
+                                # refresh on each.
+                                oldpatchset = self.patchset
+                                self.patchset = oldpatchset.__class__(self.patchset.dir, self.patchset.d)
+        
+                                for patch in self.patchset.patches:
+                                        oldpatch = None
+                                        for opatch in oldpatchset.patches:
+                                                if opatch["quiltfile"] == patch["quiltfile"]:
+                                                        oldpatch = opatch
+        
+                                        if oldpatch:
+                                                patch["remote"] = oldpatch["remote"]
+                                                if patch["quiltfile"] == oldpatch["quiltfile"]:
+                                                        if patch["quiltfilemd5"] != oldpatch["quiltfilemd5"]:
+                                                                bb.note("Patch %s has changed, updating remote url %s" % (os.path.basename(patch["quiltfile"]), patch["remote"]))
+                                                                # user change?  remote refresh
+                                                                self.patchset.Refresh(remote=True, patch=self.patchset.patches.index(patch))
+                                                        else:
+                                                                # User did not fix the problem.  Abort.
+                                                                raise PatchError("Patch application failed, and user did not fix and refresh the patch.")
+                        except Exception:
+                                os.chdir(olddir)
+                                raise
+                        os.chdir(olddir)
+        
+                # Throw away the changes to the patches in the patchset made by resolve()
+                def Revert(self):
+                        raise NotImplementedError()
+        
+                # Apply the changes to the patches in the patchset made by resolve()
+                def Finalize(self):
+                        raise NotImplementedError()
+
+        g = globals()
+        g["PatchSet"] = PatchSet
+        g["QuiltTree"] = QuiltTree
+        g["Resolver"] = Resolver
+        g["UserResolver"] = UserResolver
+
+addtask patch after do_unpack
+do_patch[dirs] = "${WORKDIR}"
+python base_do_patch() {
+        import re
+        import bb.fetch
+
+        patch_init()
+        
+        src_uri = (bb.data.getVar('SRC_URI', d, 1) or '').split()
+        if not src_uri:
+                return
+        
+        patchsetmap = {
+                "quilt": QuiltTree,
+        }
+
+        cls = patchsetmap[bb.data.getVar('PATCHTOOL', d, 1) or 'quilt']
+        
+        resolvermap = {
+                "user": UserResolver,
+        }
+        
+        rcls = resolvermap[bb.data.getVar('PATCHRESOLVE', d, 1) or 'user']
+        
+        s = bb.data.getVar('S', d, 1)
+        
+        patchset = cls(s, d)
+        patchset.Clean()
+
+        resolver = rcls(patchset)
+        
+        workdir = bb.data.getVar('WORKDIR', d, 1)
+        for url in src_uri:
+                (type, host, path, user, pswd, parm) = bb.decodeurl(url)
+                if not "patch" in parm:
+                        continue
+        
+                bb.fetch.init([url],d)
+                url = bb.encodeurl((type, host, path, user, pswd, []))
+                local = os.path.join('/', bb.fetch.localpath(url, d))
+        
+                # did it need to be unpacked?
+                dots = os.path.basename(local).split(".")
+                if dots[-1] in ['gz', 'bz2', 'Z']:
+                        unpacked = os.path.join(bb.data.getVar('WORKDIR', d),'.'.join(dots[0:-1]))
+                else:
+                        unpacked = local
+                unpacked = bb.data.expand(unpacked, d)
+        
+                if "pnum" in parm:
+                        pnum = parm["pnum"]
+                else:
+                        pnum = "1"
+        
+                if "pname" in parm:
+                        pname = parm["pname"]
+                else:
+                        pname = os.path.basename(unpacked)
+        
+                if "mindate" in parm:
+                        mindate = parm["mindate"]
+                else:
+                        mindate = 0
+        
+                if "maxdate" in parm:
+                        maxdate = parm["maxdate"]
+                else:
+                        maxdate = "20711226"
+        
+                pn = bb.data.getVar('PN', d, 1)
+                srcdate = bb.data.getVar('SRCDATE_%s' % pn, d, 1)
+        
+                if not srcdate:
+                        srcdate = bb.data.getVar('SRCDATE', d, 1)
+        
+                if srcdate == "now": 
+                        srcdate = bb.data.getVar('DATE', d, 1)
+        
+                if (maxdate < srcdate) or (mindate > srcdate):
+                        if (maxdate < srcdate):
+                                bb.note("Patch '%s' is outdated" % pname)
+        
+                        if (mindate > srcdate):
+                                bb.note("Patch '%s' is predated" % pname)
+        
+                        continue
+        
+                bb.note("Applying patch '%s'" % pname)
+                patchset.Import({"file":unpacked, "remote":url, "strippath": pnum}, True)
+                resolver.Resolve()
+}