Initial commit

python_appimage/system.py

@@ -0,0 +1,46 @@
+import os
+import re
+import subprocess
+
+from .log import debug
+
+
+__all__ = ['ldd', 'system']
+
+
+def _decode(s):
+    '''Decode Python 3 bytes as str
+    '''
+    try:
+        return s.decode()
+    except AttributeError:
+        return s
+
+
+def system(*args):
+    '''System call with capturing output
+    '''
+    cmd = ' '.join(args)
+    debug('SYSTEM', cmd)
+
+    p = subprocess.Popen(cmd, shell=True, stdout=subprocess.PIPE,
+                         stderr=subprocess.PIPE)
+    out, err = p.communicate()
+    if err:
+        err = _decode(err)
+        stripped = [line for line in err.split(os.linesep)
+                    if line and not line.startswith('fuse: warning:')]
+        if stripped:
+            raise RuntimeError(err)
+
+    return str(_decode(out).strip())
+
+
+_ldd_pattern = re.compile('=> (.+) [(]0x')
+
+
+def ldd(path):
+    '''Get dependencies list of dynamic libraries
+    '''
+    out = system('ldd', path)
+    return _ldd_pattern.findall(out)