Merge pull request #71 from switham/pdfcat

Fix for pdfcat options parse, fix issue #70

Sample_Code/pdfcat

@@ -30,13 +30,19 @@ def parse_args():
     parser = argparse.ArgumentParser(
         description=__doc__.format(page_range_help=PAGE_RANGE_HELP),
         formatter_class=argparse.RawDescriptionHelpFormatter)
-    parser.add_argument("args", nargs="+",
-                        metavar="filename or page range expression")
     parser.add_argument("-o", "--output",
                         metavar="output_file")
     parser.add_argument("-v", "--verbose", action="store_true",
                         help="show page ranges as they are being read")
-    return parser.parse_args()
+    parser.add_argument("first_filename", nargs=1,
+                        metavar="filename [page range...]")
+    # argparse chokes on page ranges like "-2:" unless caught like this:
+    parser.add_argument("fn_pgrgs", nargs=argparse.REMAINDER,
+                        metavar="filenames and/or page ranges")
+    args = parser.parse_args()
+    args.fn_pgrgs.insert(0, args.first_filename[0])
+    return args
+
 
 from sys import stderr, stdout, exit
 import os
@@ -48,7 +54,7 @@ from PyPDF2 import PdfFileMerger, parse_filename_page_ranges
 
 if __name__ == "__main__":
     args = parse_args()
-    filename_page_ranges = parse_filename_page_ranges(args.args)
+    filename_page_ranges = parse_filename_page_ranges(args.fn_pgrgs)
     if args.output:
         output = open(args.output, "wb")
     else: