Add config file overwriting

README.md

@@ -3,7 +3,7 @@
 
 # Usage
 ```
-usage: fsub [-h] [-c] [-s MS] [-n] file [file ...]
+usage: fsub [-h] [-c] [-s MS] [-n] [-f FILE] file [file ...]
 
 Fix, edit and clean SubRip (.srt) files.
 
@@ -12,17 +12,20 @@ positional arguments:
 
 optional arguments:
   -h, --help            show this help message and exit
-  -c, --clean        removes subtitles matching regular expressions listed in ~/.config/fsubrc
-                     (this is the default behavior if no other flag is passed)
+  -c, --clean           removes subtitles matching regular expressions listed in
+                        ~/.config/fsubrc (this is the default behavior if no other flag is
+                        passed)
   -s MS, --shift MS     shifts all subtitles by MS milliseconds, which may be positive or
                         negative
   -n, --no-html         strips HTML tags from subtitles content
+  -f FILE, --config-file FILE
+                        overwrites the default config file (~/.config/fsubrc)
 ```
 
 # Features
 - Fixes subtitle numbering
 - Converts files to UTF-8 encoding
 - Validates file structure
-- May remove subtitles containing lines that match any regular expression listed in `~/.config/fsubrc`
+- May remove subtitles containing lines that match any regular expression listed in the config file (by default `~/.config/fsubrc`)
 - May shift the time of all subtitles
 - May strip HTML

fsub

@@ -98,12 +98,13 @@ class Subtitle:
         )
 
 
-def clean(subs):
+def clean(subs, cfg):
     # Read expressions in ~/.config/fsubrc
-    fsubrc = open(os.getenv('HOME') + '/.config/fsubrc', 'r')
-    lines = re.split(r'\r?\n', fsubrc.read().strip())
+    if not cfg:
+        cfg = open(os.getenv('HOME') + '/.config/fsubrc', 'r')
+    lines = re.split(r'\r?\n', cfg.read().strip())
     expressions = list(map(re.compile, lines))
-    fsubrc.close()
+    cfg.close()
 
     # Cancel if no expression
     if len(expressions) == 0:
@@ -162,7 +163,7 @@ def process_file(args, file):
 
     # Clean if --clean is passed
     if args.clean:
-        subs_objs = clean(subs_objs)
+        subs_objs = clean(subs_objs, args.config_file)
 
     # Shift if --shift is passed
     if args.shift:
@@ -215,6 +216,14 @@ parser.add_argument(
     action='store_true'
 )
 
+parser.add_argument(
+    '-f', '--config-file',
+    help='overwrites the default config file (~/.config/fsubrc)',
+    metavar='FILE',
+    action='store',
+    type=argparse.FileType('r')
+)
+
 parser.add_argument(
     'files',
     help='list of input files (they all must be SubRip files)',
@@ -229,6 +238,11 @@ args = parser.parse_args()
 if not args.shift and not args.no_html:
     args.clean = True
 
+# Validate options
+if not args.clean and args.config_file:
+    print('-f requires -c', file=sys.stderr)
+    exit(1)
+
 # Check if all files are .srt
 for file in args.files:
     if file.name[-4:] != '.srt':