patch.bbclass: Merge patch enhancements from OE by Chris Larson

Chris made some interesting changes to the patch handling in OE. Firstly the
patch and pnum parameters have been renamed, to better reflect their function,
to apply and striplevel. The apply parameter now takes either yes or no as its
value.

Therefore a patch line would be changed from:
file://some.patch;patch=1;pnum=2
to:
file://some.patch;apply=yes;striplevel=2

Secondly the apply parameter is inferred if not defined. Entries in SRC_URI
with diff or patch filename extensions will be automatically applied as patches
if the apply parameter is not set to no (or an unknown value).

Note: We have disabled the warnings when using the old style parameters for now

Signed-off-by: Joshua Lock <josh@linux.intel.com>

meta/classes/patch.bbclass

@@ -6,7 +6,7 @@ QUILTRCFILE ?= "${STAGING_BINDIR_NATIVE}/quiltrc"
 PATCHDEPENDENCY = "${PATCHTOOL}-native:do_populate_sysroot"
 
 python patch_do_patch() {
-        import oe.patch
+	import oe.patch
 
 	src_uri = (bb.data.getVar('SRC_URI', d, 1) or '').split()
 	if not src_uri:
@@ -25,7 +25,7 @@ python patch_do_patch() {
 		"user": oe.patch.UserResolver,
 	}
 
-	rcls = resolvermap[bb.data.getVar('PATCHRESOLVE', d, 1) or 'noop']
+	rcls = resolvermap[bb.data.getVar('PATCHRESOLVE', d, 1) or 'user']
 
 	s = bb.data.getVar('S', d, 1)
 
@@ -39,32 +39,44 @@ python patch_do_patch() {
 	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:
+
+		local = None
+		base, ext = os.path.splitext(os.path.basename(path))
+		if ext in ('.gz', '.bz2', '.Z'):
+			local = os.path.join(workdir, base)
+			ext = os.path.splitext(base)[1]
+
+		if "apply" in parm:
+			apply = parm["apply"]
+			if apply != "yes":
+				if apply != "no":
+					bb.msg.warn(None, "Unsupported value '%s' for 'apply' url param in '%s', please use 'yes' or 'no'" % (apply, url))
+				continue
+		#elif "patch" in parm:
+			#bb.msg.warn(None, "Deprecated usage of 'patch' url param in '%s', please use 'apply={yes,no}'" % url)
+		elif ext not in (".diff", ".patch"):
 			continue
 
-		bb.fetch.init([url],d)
-		url = bb.encodeurl((type, host, path, user, pswd, []))
-		local = os.path.join('/', bb.fetch.localpath(url, d))
+		if not local:
+			bb.fetch.init([url],d)
+			url = bb.encodeurl((type, host, path, user, pswd, []))
+			local = os.path.join('/', bb.fetch.localpath(url, d))
+		local = bb.data.expand(local, 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]))
+		if "striplevel" in parm:
+			striplevel = parm["striplevel"]
+		elif "pnum" in parm:
+			#bb.msg.warn(None, "Deprecated usage of 'pnum' url parameter in '%s', please use 'striplevel'" % url)
+			striplevel = parm["pnum"]
 		else:
-			unpacked = local
-		unpacked = bb.data.expand(unpacked, d)
-
-		if "pnum" in parm:
-			pnum = parm["pnum"]
-		else:
-			pnum = "1"
+			striplevel = '1'
 
 		if "pname" in parm:
 			pname = parm["pname"]
 		else:
-			pname = os.path.basename(unpacked)
+			pname = os.path.basename(local)
 
-                if "mindate" in parm or "maxdate" in parm:
+		if "mindate" in parm or "maxdate" in parm:
 			pn = bb.data.getVar('PN', d, 1)
 			srcdate = bb.data.getVar('SRCDATE_%s' % pn, d, 1)
 			if not srcdate:
@@ -106,16 +118,17 @@ python patch_do_patch() {
 				bb.note("Patch '%s' doesn't apply to revision" % pname)
 				continue
 
-		bb.note("Applying patch '%s'" % pname)
+		bb.note("Applying patch '%s' (%s)" % (pname, oe.path.format_display(local, d)))
 		try:
-			patchset.Import({"file":unpacked, "remote":url, "strippath": pnum}, True)
-			resolver.Resolve()
+			patchset.Import({"file":local, "remote":url, "strippath": striplevel}, True)
 		except Exception:
 			import sys
 			raise bb.build.FuncFailed(str(sys.exc_value))
+		resolver.Resolve()
 }
 
 addtask patch after do_unpack
 do_patch[dirs] = "${WORKDIR}"
 do_patch[depends] = "${PATCHDEPENDENCY}"
+
 EXPORT_FUNCTIONS do_patch