Feat(config): Environment variables are expanded in paths

[m_librarian.git] / m_librarian / download.py

diff --git a/m_librarian/download.py b/m_librarian/download.py
index 361f7aa735549a783e80a0f4adcef6ae67464f43..6304658062b79bf2ef68a3550c2981d44eb094e2 100755 (executable)
--- a/m_librarian/download.py
+++ b/m_librarian/download.py
@@ -1,5 +1,6 @@
 #! /usr/bin/env python
 
+from __future__ import print_function
 import os
 from time import mktime
 from shutil import copyfileobj
@@ -9,22 +10,107 @@ from .config import get_config
 __all__ = ['download']
 
 
+format = '%f'
+compile_format = True
+compiled_format = '%(file)s'
+
+
+def _compile_format():
+    global format, compile_format, compiled_format
+    if compile_format:
+        compile_format = False
+        format = get_config().get('download', 'format')
+        if not format:
+            return
+    got_percent = False
+    compiled = []
+    for c in format:
+        if c == '%':
+            if got_percent:
+                got_percent = False
+                compiled.append('%')
+            else:
+                got_percent = True
+        else:
+            if got_percent:
+                got_percent = False
+                if c == 'a':
+                    new_format = u'%(author)s'
+                elif c == 'e':
+                    new_format = u'%(extension)s'
+                elif c == 'f':
+                    new_format = u'%(file)s'
+                elif c == 'G':
+                    new_format = u'%(gname)s'
+                elif c == 'g':
+                    new_format = u'%(gtitle)s'
+                elif c == 'l':
+                    new_format = u'%(language)s'
+                elif c == 'n':
+                    new_format = u'%(ser_no)d'
+                elif c == 's':
+                    new_format = u'%(series)s'
+                elif c == 't':
+                    new_format = u'%(title)s'
+                else:
+                    raise ValueError('Bad format specifier "%%%c"' % c)
+                compiled.append(new_format)
+            else:
+                compiled.append(c)
+    compiled_format = ''.join(compiled)
+
+
 _library_path = None
 
 
-def download(archive, filename, date, path=None):
-    if path is None:
+def download(book, dest_path=None, lib_path=None, a_format=None):
+    if lib_path is None:
         global _library_path
         if _library_path is None:
-            _library_path = get_config().get('library', 'path')
-        path = _library_path
+            _library_path = get_config().getpath('library', 'path')
+        lib_path = _library_path
 
-    zf = ZipFile(os.path.join(path, archive),  'r')
-    infile = zf.open(filename)
-    outfile = open(filename, 'wb')
+    global format, compile_format, compiled_format
+    if a_format:
+        format = a_format
+        compile_format = True
+    _compile_format()
+    if compiled_format[-1] in ('\0', '\\', '/'):
+        raise ValueError('Bad format: "%s"' % compiled_format)
+    bdict = {}
+    bdict['author'] = book.authors[0].fullname
+    bdict['extension'] = book.extension.name
+    bdict['file'] = book.file
+    genre = book.genres[0]
+    bdict['gname'] = genre.name
+    bdict['gtitle'] = genre.title
+    bdict['language'] = book.language.name
+    bdict['ser_no'] = book.ser_no or 0
+    bdict['series'] = book.series
+    bdict['title'] = book.title
+    if '%(extension)s' not in compiled_format:
+        compiled_format += '.%(extension)s'
+    filename = compiled_format % bdict
+    full_path = os.path.join(dest_path, filename)
+    try:
+        os.makedirs(os.path.dirname(full_path))
+    except OSError:
+        pass  # Already exists
+    zf = ZipFile(os.path.join(lib_path, book.archive),  'r')
+    infile = zf.open('%s.%s' % (book.file, book.extension.name))
+    outfile = open(full_path, 'wb')
     copyfileobj(infile, outfile)
     outfile.close()
     infile.close()
     zf.close()
-    dt = mktime(date.timetuple())
-    os.utime(filename, (dt, dt))
+    dt = mktime(book.date.timetuple())
+    os.utime(full_path, (dt, dt))
+
+
+def test():
+    _compile_format()
+    print(compiled_format)
+
+
+if __name__ == '__main__':
+    test()