Add an app builder

python_appimage/utils/compat.py

@@ -0,0 +1,10 @@
+__all__ = ['decode']
+
+
+def decode(s):
+    '''Decode Python 3 bytes as str
+    '''
+    try:
+        return s.decode()
+    except AttributeError:
+        return str(s)

python_appimage/utils/system.py

@@ -2,20 +2,13 @@ import os
 import re
 import subprocess
 
+from .compat import decode
 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
@@ -27,13 +20,13 @@ def system(*args):
                          stderr=subprocess.PIPE)
     out, err = p.communicate()
     if err:
-        err = _decode(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())
+    return str(decode(out).strip())
 
 
 _ldd_pattern = re.compile('=> (.+) [(]0x')

python_appimage/utils/template.py

@@ -0,0 +1,41 @@
+import os
+import re
+import shutil
+
+from .fs import make_tree
+from .log import debug
+
+
+__all__ = ['copy_template', 'load_template']
+
+
+_template_pattern = re.compile('[{][{][ ]*([^{} ]+)[ ]*[}][}]')
+
+
+def load_template(path, **kwargs):
+    '''Load a template file and substitue keywords
+    '''
+    with open(path) as f:
+        template = f.read()
+
+    def matcher(m):
+        tag = m.group(1)
+        try:
+            return kwargs[tag]
+        except KeyError:
+            return tag
+
+    return _template_pattern.sub(matcher, template)
+
+
+def copy_template(path, destination, **kwargs):
+    '''Copy a template file and substitue keywords
+    '''
+    txt = load_template(path, **kwargs)
+
+    debug('COPY', '%s as %s', os.path.basename(path), destination)
+    make_tree(os.path.dirname(destination))
+    with open(destination, 'w') as f:
+        f.write(txt)
+
+    shutil.copymode(path, destination)

python_appimage/utils/url.py

@@ -1,4 +1,8 @@
 import os
+try:
+    from urllib.request import urlopen as _urlopen
+except ImportError:
+    from urllib2 import urlopen as _urlopen
 try:
     from urllib.request import urlretrieve as _urlretrieve
 except ImportError:
@@ -8,7 +12,15 @@ except ImportError:
 from .log import debug
 
 
-__all__ = ['urlretrieve']
+__all__ = ['urlopen', 'urlretrieve']
+
+
+def urlopen(url, *args, **kwargs):
+    '''Open a remote file
+    '''
+    baseurl, urlname = os.path.split(url)
+    debug('DOWNLOAD', '%s from %s', baseurl, urlname)
+    return _urlopen(url, *args, **kwargs)
 
 
 def urlretrieve(url, filename=None):