Add an app builder

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)