From ae2bb02fa22118fb69987e16040c74098b0220b4 Mon Sep 17 00:00:00 2001
From: jvoisin <julien.voisin@dustri.org>
Date: Tue, 10 Jul 2018 20:49:54 +0200
Subject: [PATCH] Implement a check for dependencies in mat2
Example use:
```
$ mat2 -c
Dependencies required for MAT2 0.1.3:
- Cairo: yes
- Exiftool: yes
- GdkPixbuf from PyGobject: yes
- Mutagen: yes
- Poppler from PyGobject: yes
- PyGobject: yes
```
This should close #35
---
libmat2/__init__.py | 33 +++++++++++++++++++++++++++++++++
mat2 | 14 +++++++++++---
2 files changed, 44 insertions(+), 3 deletions(-)
diff --git a/libmat2/__init__.py b/libmat2/__init__.py
index d910215..74b07ef 100644
--- a/libmat2/__init__.py
+++ b/libmat2/__init__.py
@@ -1,5 +1,13 @@
#!/bin/env python3
+import os
+import collections
+import importlib
+from typing import Dict
+
+# make pyflakes happy
+assert Dict
+
# A set of extension that aren't supported, despite matching a supported mimetype
UNSUPPORTED_EXTENSIONS = {
'.asc',
@@ -17,3 +25,28 @@ UNSUPPORTED_EXTENSIONS = {
'.xsd',
'.xsl',
}
+
+DEPENDENCIES = {
+ 'cairo': 'Cairo',
+ 'gi': 'PyGobject',
+ 'gi.repository.GdkPixbuf': 'GdkPixbuf from PyGobject',
+ 'gi.repository.Poppler': 'Poppler from PyGobject',
+ 'mutagen': 'Mutagen',
+ }
+
+def check_dependencies() -> dict:
+ ret = collections.defaultdict(bool) # type: Dict[str, bool]
+
+ exiftool = '/usr/bin/exiftool'
+ ret['Exiftool'] = False
+ if os.path.isfile(exiftool) and os.access(exiftool, os.X_OK):
+ ret['Exiftool'] = True
+
+ for key, value in DEPENDENCIES.items():
+ ret[value] = True
+ try:
+ importlib.import_module(key)
+ except ImportError:
+ ret[value] = False
+
+ return ret
diff --git a/mat2 b/mat2
index 7c7b652..efc0478 100755
--- a/mat2
+++ b/mat2
@@ -9,7 +9,7 @@ import argparse
import multiprocessing
try:
- from libmat2 import parser_factory, UNSUPPORTED_EXTENSIONS
+ from libmat2 import parser_factory, UNSUPPORTED_EXTENSIONS, check_dependencies
except ValueError as e:
print(e)
sys.exit(1)
@@ -36,6 +36,9 @@ def create_arg_parser():
version='MAT2 %s' % __version__)
parser.add_argument('-l', '--list', action='store_true',
help='list all supported fileformats')
+ parser.add_argument('-c', '--check-dependencies', action='store_true',
+ help='check if MAT2 has all the dependencies it needs')
+
info = parser.add_mutually_exclusive_group()
info.add_argument('-s', '--show', action='store_true',
@@ -108,9 +111,14 @@ def main():
args = arg_parser.parse_args()
if not args.files:
- if not args.list:
+ if args.list:
+ show_parsers()
+ elif args.check_dependencies:
+ print("Dependencies required for MAT2 %s:" % __version__)
+ for key, value in sorted(check_dependencies().items()):
+ print('- %s: %s' % (key, 'yes' if value else 'no'))
+ else:
return arg_parser.print_help()
- show_parsers()
return 0
elif args.show:
--
GitLab