From 9bb2a4ec6f32704746863b538f503683e7eab22f Mon Sep 17 00:00:00 2001
From: jvoisin
Date: Wed, 11 Jun 2014 09:01:24 +0200
Subject: Port mat from optparse to argparse

---
 mat | 70 ++++++++++++++++++++++++++++++---------------------------------------
 1 file changed, 30 insertions(+), 40 deletions(-)

diff --git a/mat b/mat
index 03a7367..18dd456 100755
--- a/mat
+++ b/mat
@@ -5,7 +5,7 @@
 
 import sys
 import xml.sax
-import optparse
+import argparse
 import os
 
 import hachoir_core
@@ -18,41 +18,28 @@ from libmat import archive
 def parse():
     ''' Get, and parse options passed to the program
     '''
-    parser = optparse.OptionParser(usage='%prog [options] files\n\
-The default behaviour is to clean files given in argument')
-    options = optparse.OptionGroup(parser, 'Options')
-    options.add_option('--add2archive', '-a', action='store_true',
-        default=False, help='Add to output archive non-supported filetypes (Off by default)')
-    options.add_option('--backup', '-b', action='store_true', default=False,
-        help='Keep a backup copy')
-    options.add_option('--low-pdf-quality', '-L', action='store_true', default=False,
-        help='Produces a lighter, but lower quality PDF')
-    info = optparse.OptionGroup(parser, 'Informations')
-    info.add_option('--check', '-c',  action='store_true', default=False,
-        help='Check if a file is free of harmful metadatas')
-    info.add_option('--display', '-d', action='store_true', default=False,
-        help='List all the harmful metadata of a file without removing them')
-    info.add_option('--list', '-l', action='store_true', default=False,
-        help='List all supported fileformats')
-    info.add_option('--version', '-v', action='callback',
-        callback=display_version, help='Display version and exit')
-    parser.add_option_group(options)
-    parser.add_option_group(info)
-
-    values, arguments = parser.parse_args()
-    if not arguments and not values.list:
-        # if no argument and no files are passed,
-        # print help and exit
-        parser.print_help()
-    return values, arguments
-
-
-def display_version(*_):
-    ''' Display the program's version, and exit
-    '''
-    print('Metadata Anonymisation Toolkit %s' % mat.__version__)
-    print('Hachoir %s' % hachoir_core.__version__)
-    sys.exit(0)
+    parser = argparse.ArgumentParser(description='Metadata anonymisation toolkit')
+    parser.add_argument('files', nargs='*')
+
+    options = parser.add_argument_group('Options')
+    options.add_argument('-a', '--add2archive', action='store_true',
+            help='add to output archive non-supported filetypes (Off by default)')
+    options.add_argument('-b', '--backup', '-b', action='store_true',
+        help='keep a backup copy')
+    options.add_argument('-L', '--low-pdf-quality', '-L', action='store_true',
+        help='produces a lighter, but lower quality PDF')
+
+    info = parser.add_argument_group('Information')
+    info.add_argument('-c', '--check', action='store_true',
+        help='check if a file is free of harmful metadatas')
+    info.add_argument('-d', '--display', action='store_true',
+        help='list all the harmful metadata of a file without removing them')
+    info.add_argument('-l', '--list', action='store_true',
+        help='list all supported fileformats')
+    info.add_argument('-v', '--version', action='version',
+            version='MAT %s - Hachoir %s' % (mat.__version__, hachoir_core.__version__))
+
+    return parser.parse_args()
 
 
 def list_meta(class_file, filename, add2archive):
@@ -118,7 +105,7 @@ def list_supported():
 
 def main():
     ''' Main function: get args and launch the appropriate function '''
-    args, filenames = parse()
+    args = parse()
 
     #func receives the function corresponding to the options given as parameters
     if args.display:  # only print metadatas
@@ -131,12 +118,15 @@ def main():
         func = clean_meta
 
     ret = 0
-    while filenames:
-        filename = filenames.pop()
+    # We're using a while loop, instead of a for,
+    # because we support folders. This allow us
+    # to add their content, and to process it.
+    while args.files:
+        filename = args.files.pop()
         if os.path.isdir(filename):
             for root, sub, files in os.walk(filename):
                 for file in files:
-                    filenames.append(os.path.join(root, file))
+                    args.files.append(os.path.join(root, file))
             continue
 
         class_file = mat.create_class_file(filename, args.backup,
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