Added UnsupportedDiskImage error to show that the disk has a known format but it's not able to be parsed

atrcopy/__init__.py

@@ -46,6 +46,7 @@ def process(image, dirent, options):
         print dirent
 
 def find_diskimage(filename):
+    try:
         with open(filename, "rb") as fh:
             if options.verbose:
                 print "Loading file %s" % filename
@@ -63,6 +64,10 @@ def find_diskimage(filename):
                 break
             if parser is None:
                 print "%s: Unknown disk image type" % filename
+    except UnsupportedDiskImage, e:
+        print "%s: %s" % (filename, e)
+        return None
+    else:
         parser.image.filename = filename
         parser.image.ext = ""
         return parser
@@ -219,7 +224,19 @@ def run():
     if options.all and file_list:
             raise AtrError("Specifying a list of files and --all doesn't make sense.")
 
+    image_files = []
     for filename in options.files:
+        if filename == "-":
+            import fileinput
+
+            for line in fileinput.input(["-"]):
+                line = line.rstrip()
+                print "-->%s<--" % line
+                image_files.append(line)
+        else:
+            image_files.append(filename)
+
+    for filename in image_files:
         parser = find_diskimage(filename)
         if parser and parser.image:
             if options.all:

atrcopy/dos33.py

@@ -602,4 +602,13 @@ class ProdosDiskImage(DiskImageBase):
                 if prodos == "PRODOS":
                     swap_order = True
                 else:
-                    raise InvalidDiskImage("No ProDOS header info found")
+                    # FIXME: this doesn't seem to be the only way to identify a
+                    # PRODOS disk. I have example images where PRODOS occurs at
+                    # 0x21 - 0x27 in t0s14 and 0x11 - 0x16 in t0s01. Using 3 -
+                    # 9 as magic bytes was from the cppo script from
+                    # https://github.com/RasppleII/a2server but it seems that
+                    # more magic bytes might be acceptable?
+
+                    #raise InvalidDiskImage("No ProDOS header info found")
+                    pass
+            raise UnsupportedDiskImage("ProDOS format found but not supported")

atrcopy/errors.py

@@ -8,6 +8,18 @@ class InvalidCartHeader(AtrError):
     pass
 
 class InvalidDiskImage(AtrError):
+    """ Disk image is not recognized by a parser.
+
+    Usually a signal to try the next parser; this error doesn't propagate out
+    to the user much.
+    """
+    pass
+
+class UnsupportedDiskImage(AtrError):
+    """ Disk image is recognized by a parser but it isn't supported yet.
+
+    This error does propagate out to the user.
+    """
     pass
 
 class InvalidDirent(AtrError):

atrcopy/parsers.py

@@ -29,6 +29,8 @@ class SegmentParser(object):
             self.image = self.get_image(r)
             self.check_image()
             self.image.parse_segments()
+        except UnsupportedDiskImage:
+            raise
         except AtrError, e:
             raise InvalidSegmentParser(e)
         self.segments.extend(self.image.segments)