fix #5 and achieve method parity between databroker and datacache

pubs/commands/add_cmd.py

@@ -82,7 +82,7 @@ def command(args):
         base_key = bibstruct.extract_citekey(bibdata)
         citekey = rp.unique_citekey(base_key)
     else:
-        rp.databroker.exists(citekey, both=False)
+        rp.databroker.exists(citekey, meta_check=False)
 
     p = paper.Paper(bibdata, citekey=citekey)
 

pubs/databroker.py

@@ -39,13 +39,22 @@ class DataBroker(object):
     def remove(self, citekey):
         self.filebroker.remove(citekey)
 
-    def exists(self, citekey, both = True):
+    def exists(self, citekey, meta_check=False):
-        return self.filebroker.exists(citekey, both=both)
+        """ Checks wether the bibtex of a citekey exists.
+
+            :param meta_check:  if True, will return if both the bibtex and the meta file exists.
+        """
+        return self.filebroker.exists(citekey, meta_check=meta_check)
+
+    def citekeys(self):
+        listings = self.listing(filestats=False)
+        return set(listings['bibfiles'])
 
     def listing(self, filestats=True):
         return self.filebroker.listing(filestats=filestats)
 
     def verify(self, bibdata_raw):
+        """Will return None if bibdata_raw can't be decoded"""
         try:
             return self.endecoder.decode_bibdata(bibdata_raw)
         except ValueError:

pubs/datacache.py

@@ -7,7 +7,7 @@ class DataCache(object):
         Has two roles :
         1. Provides a buffer between the commands and the hard drive.
            Until a command request a hard drive ressource, it does not touch it.
-        2. Keeps a up-to-date, pickled version of the repository, to speed up things
+        2. Keeps an up-to-date, pickled version of the repository, to speed up things
            when they are a lot of files. Update are also done only when required.
            Changes are detected using data modification timestamps.
 
@@ -46,18 +46,16 @@ class DataCache(object):
     def remove(self, citekey):
         self.databroker.remove(citekey)
 
-    def exists(self, citekey, both=True):
+    def exists(self, citekey, meta_check=False):
-        return self.databroker.exists(citekey, both=both)
+        return self.databroker.exists(citekey, meta_check=meta_check)
 
     def citekeys(self):
-        listings = self.listing(filestats=False)
+        return self.databroker.citekeys()
-        return set(listings['metafiles']).intersection(listings['bibfiles'])
 
     def listing(self, filestats=True):
         return self.databroker.listing(filestats=filestats)
 
     def verify(self, bibdata_raw):
-        """Will return None if bibdata_raw can't be decoded"""
         return self.databroker.verify(bibdata_raw)
 
     # docbroker

pubs/filebroker.py

@@ -71,13 +71,16 @@ class FileBroker(object):
         if check_file(bibfilepath):
             os.remove(system_path(bibfilepath))
 
-    def exists(self, citekey, both=True):
+    def exists(self, citekey, meta_check=False):
-        meta_exists = check_file(os.path.join(self.metadir, citekey + '.yaml'), fail=False)
+        """ Checks wether the bibtex of a citekey exists.
-        bib_exists = check_file(os.path.join(self.bibdir, citekey + '.bib'), fail=False)
+
-        if both:
+            :param meta_check:  if True, will return if both the bibtex and the meta file exists.
-            return meta_exists and bib_exists
+        """
-        else:
+        does_exists = check_file(os.path.join(self.bibdir, citekey + '.bib'), fail=False)
-            return meta_exists or bib_exists
+        if meta_check:
+            meta_exists = check_file(os.path.join(self.metadir, citekey + '.yaml'), fail=False)
+            does_exists = does_exists and meta_exists
+        return does_exists
 
     def listing(self, filestats=True):
         metafiles = []

pubs/repo.py

@@ -50,7 +50,8 @@ class Repository(object):
 
     def pull_paper(self, citekey):
         """Load a paper by its citekey from disk, if necessary."""
-        if self.databroker.exists(citekey, both = True):
+        if self.databroker.exists(citekey, meta_check=True):
+            #TODO meta_check=False and default meta generation
             return Paper(self.databroker.pull_bibdata(citekey),
                          citekey=citekey,
                          metadata=self.databroker.pull_metadata(citekey))
@@ -64,7 +65,7 @@ class Repository(object):
                                if True, mimick the behavior of updating a paper
         """
         bibstruct.check_citekey(paper.citekey)
-        if (not overwrite) and (self.databroker.exists(paper.citekey, both=False)
+        if (not overwrite) and (self.databroker.exists(paper.citekey, meta_check=False)
                                 or (paper.citekey in self)):
             raise CiteKeyCollision('citekey {} already in use'.format(paper.citekey))
         if not paper.added:

tests/test_databroker.py

@@ -25,11 +25,12 @@ class TestDataBroker(unittest.TestCase):
             db = db_class('tmp', create=True)
 
             db.push_metadata('citekey1', page99_metadata)
-            self.assertTrue(db.exists('citekey1', both=False))
+            self.assertFalse(db.exists('citekey1', meta_check=True))
-            self.assertFalse(db.exists('citekey1', both=True))
+            self.assertFalse(db.exists('citekey1', meta_check=False))
 
             db.push_bibdata('citekey1', page99_bibdata)
-            self.assertTrue(db.exists('citekey1', both=True))
+            self.assertTrue(db.exists('citekey1', meta_check=False))
+            self.assertTrue(db.exists('citekey1', meta_check=True))
 
             self.assertEqual(db.pull_metadata('citekey1'), page99_metadata)
             pulled = db.pull_bibdata('citekey1')['Page99']