Warn about offset > 587 only after the rip fails with size 0:

Upstream cd-paranoia fixed the offset issue, but we can't check
whether the installed version contains the fix. Instead of warning
everyone before the rip starts, warn only the people who get
an empty file with the large offset.

Don't show size mismatch warnings for zero-size files

Signed-off-by: Avery <[email protected]>

whipper/program/cdparanoia.py

@@ -283,17 +283,6 @@ def start(self, runner):
             stopTrack, common.framesToHMSF(stopOffset)),
             self.path])
         logger.debug('running %s', (" ".join(argv), ))
-        if self._offset > 587:
-            logger.warning(
-                "because of a cd-paranoia upstream bug whipper may fail to "
-                "work correctly when using offset values > 587 (current "
-                "value: %d) and print warnings like this: 'file size 0 did "
-                "not match expected size'. For more details please check the "
-                "following issues: "
-                "https://github.com/whipper-team/whipper/issues/234 and "
-                "https://github.com/rocky/libcdio-paranoia/issues/14",
-                self._offset
-            )
         if stopTrack == 99:
             logger.warning(
                 "because of a cd-paranoia upstream bug whipper may fail to "
@@ -372,9 +361,26 @@ def _done(self):
         # check if the length matches
         size = os.stat(self.path)[stat.ST_SIZE]
         # wav header is 44 bytes
-        offsetLength = self._stop - self._start + 1
-        expected = offsetLength * common.BYTES_PER_FRAME + 44
-        if size != expected:
+        frameCount = self._stop - self._start + 1
+        expected = frameCount * common.BYTES_PER_FRAME + 44
+        if size == 0:
+
+            if self._offset > 587:
+                logger.warning(
+                    "file is empty, possibly because of a cd-paranoia upstream "
+                    "bug when using offset values > 587 (current value: %d). "
+                    "For more details please check the following issues: "
+                    "https://github.com/whipper-team/whipper/issues/234 and "
+                    "https://github.com/rocky/libcdio-paranoia/issues/14",
+                    self._offset
+                )
+            else:
+                logger.warning('file is empty')
+            self.setAndRaiseException(FileSizeError(self.path,
+                                                    "File is empty, "
+                                                    "expected size %d" % (
+                                                        expected )))
+        elif size != expected:
             # FIXME: handle errors better
             logger.warning('file size %d did not match expected size %d',
                            size, expected)
@@ -399,7 +405,7 @@ def _done(self):
 
         self.quality = self._parser.getTrackQuality()
         self.duration = end_time - self._start_time
-        self.speed = (offsetLength / 75.0) / self.duration
+        self.speed = (frameCount / 75.0) / self.duration
 
         self.stop()
         return