Extracted some methods to utils module

fs_uae_wrapper/utils.py

@@ -0,0 +1,61 @@
+"""
+Misc utilities
+"""
+import os
+import subprocess
+import sys
+
+from fs_uae_wrapper.wrapper import WRAPPER_KEY
+
+
+ARCHIVERS = {'.tar': ['tar', 'xf'],
+             '.tgz':  ['tar', 'xf'],
+             '.tar.gz':  ['tar', 'xf'],
+             '.tar.bz2':  ['tar', 'xf'],
+             '.tar.xz':  ['tar', 'xf'],
+             '.rar':  ['unrar', 'x'],
+             '.7z':  ['7z', 'x'],
+             '.zip':  ['7z', 'x'],
+             '.lha':  ['lha', 'x'],
+             '.lzx':  ['unlzx']}
+
+
+def extract_archive(arch_name):
+    """
+    Extract provided archive to current directory
+    """
+
+    if not os.path.exists(arch_name):
+        sys.stderr.write("Archive `%s' doesn't exists.\n" % arch_name)
+        return False
+
+    _, ext = os.path.splitext(arch_name)
+
+    cmd = ARCHIVERS.get(ext)
+
+    if cmd is None:
+        sys.stderr.write("Unable find archive type for `%s'.\n" % arch_name)
+        return False
+
+    try:
+        subprocess.check_call(cmd + [arch_name])
+    except subprocess.CalledProcessError:
+        sys.stderr.write("Error during extracting archive `%s'.\n" % arch_name)
+        return False
+
+    return True
+
+
+def merge_options(configuration, wrapper_options):
+    """
+    Merge dictionaries with wrapper options into one. Commandline options
+    have precedence.
+    """
+    options = {}
+    for key, val in configuration:
+        if WRAPPER_KEY in key:
+            options[key] = val
+
+    options.update(wrapper_options)
+
+    return options