bitbake: wget: Add localpaths method which gives localpath with history

In some cases for cache purpoes we not only need to know which file
is going to be used but also which paths were considered. Add a
localpaths method which includes the history.

The core which() funciton already supports this, this just extends
the function to preserve the extra data we need. localpath becomes
just a special case of the case with history.

(Bitbake rev: ea5efeac5c1f7986666c979f789786f29fc1619a)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

bitbake/lib/bb/fetch2/local.py

@@ -51,29 +51,41 @@ class Local(FetchMethod):
         """
         Return the local filename of a given url assuming a successful fetch.
         """
+        return self.localpaths(urldata, d)[-1]
+
+    def localpaths(self, urldata, d):
+        """
+        Return the local filename of a given url assuming a successful fetch.
+        """
+        searched = []
         path = urldata.decodedurl
         newpath = path
-        if path[0] != "/":
-            filespath = data.getVar('FILESPATH', d, True)
-            if filespath:
-                logger.debug(2, "Searching for %s in paths:\n    %s" % (path, "\n    ".join(filespath.split(":"))))
-                newpath = bb.utils.which(filespath, path)
-            if not newpath:
-                filesdir = data.getVar('FILESDIR', d, True)
-                if filesdir:
-                    logger.debug(2, "Searching for %s in path: %s" % (path, filesdir))
-                    newpath = os.path.join(filesdir, path)
-            if (not newpath or not os.path.exists(newpath)) and path.find("*") != -1:
-                # For expressions using '*', best we can do is take the first directory in FILESPATH that exists
-                newpath = bb.utils.which(filespath, ".")
-                logger.debug(2, "Searching for %s in path: %s" % (path, newpath))
-                return newpath
-            if not os.path.exists(newpath):
-                dldirfile = os.path.join(d.getVar("DL_DIR", True), path)
-                logger.debug(2, "Defaulting to %s for %s" % (dldirfile, path))
-                bb.utils.mkdirhier(os.path.dirname(dldirfile))
-                return dldirfile
-        return newpath
+        if path[0] == "/":
+            return [path]
+        filespath = data.getVar('FILESPATH', d, True)
+        if filespath:
+            logger.debug(2, "Searching for %s in paths:\n    %s" % (path, "\n    ".join(filespath.split(":"))))
+            newpath, hist = bb.utils.which(filespath, path, history=True)
+            searched.extend(hist)
+        if not newpath:
+            filesdir = data.getVar('FILESDIR', d, True)
+            if filesdir:
+                logger.debug(2, "Searching for %s in path: %s" % (path, filesdir))
+                newpath = os.path.join(filesdir, path)
+                searched.append(newpath)
+        if (not newpath or not os.path.exists(newpath)) and path.find("*") != -1:
+            # For expressions using '*', best we can do is take the first directory in FILESPATH that exists
+            newpath, hist = bb.utils.which(filespath, ".", history=True)
+            searched.extend(hist)
+            logger.debug(2, "Searching for %s in path: %s" % (path, newpath))
+            return searched
+        if not os.path.exists(newpath):
+            dldirfile = os.path.join(d.getVar("DL_DIR", True), path)
+            logger.debug(2, "Defaulting to %s for %s" % (dldirfile, path))
+            bb.utils.mkdirhier(os.path.dirname(dldirfile))
+            searched.append(dldirfile)
+            return searched
+        return searched
 
     def need_update(self, ud, d):
         if ud.url.find("*") != -1: