Added PostgreSQL support.

Signed-off-by: Rob Hudson <rob@tastybrew.com>

README.rst

@@ -41,7 +41,7 @@ The following is an idea of what the configuration file, located at
 	path = /opt/local/lib/mysql5/bin/mysqldump
 	flags = -Q --opt --compact
 	
-	[pgdump options]
+	[pg_dump options]
 	path = /opt/local/lib/postgresql83/bin/pg_dump
 	
 	[TimestampRename options]

dumpy/dumper.py

@@ -81,6 +81,10 @@ class BackupBase(DumpyBase):
     """
     Base class for database backups.
     """
+
+    def __init__(self, db):
+        self.db = db
+
     def backup(self):
         raise NotImplementedError
 
@@ -113,12 +117,11 @@ def backup(self):
         self.parse_config()
         if self.type == 'mysql':
             return MysqlBackup(self.database).backup()
+        elif self.type == 'postgresql':
+            return PostgresqlBackup(self.database).backup()
 
 class MysqlBackup(BackupBase):
 
-    def __init__(self, db):
-        self.db = db
-
     def parse_config(self):
         super(MysqlBackup, self).parse_config()
 
@@ -159,6 +162,47 @@ def backup(self):
 
         return tmp_file
 
+class PostgresqlBackup(BackupBase):
+
+    def parse_config(self):
+        super(PostgresqlBackup, self).parse_config()
+
+        section = 'database %s' % self.db
+        self.name = self._get_option_value(self.config, section, 'name')
+        self.user = self._get_option_value(self.config, section, 'user')
+        self.host = self._get_option_value(self.config, section, 'host')
+        self.port = self._get_option_value(self.config, section, 'port', 'int')
+
+        self.binary = self._get_option_value(self.config, 'pg_dump options', 'path')
+        self.flags = self._get_option_value(self.config, 'pg_dump options', 'flags')
+
+    def get_flags(self):
+        # @@@ ugh. i don't like this.
+        if self.flags is None:
+            flags = ''
+        else:
+            flags = '%s' % self.flags
+        if self.user:
+            flags += ' -U %s' % self.user
+        if self.host:
+            flags += ' -h %s' % self.host
+        if self.port:
+            flags += ' -p %d' % self.port
+        return flags
+
+    def backup(self):
+        self.parse_config()
+        tmp_file = tempfile.NamedTemporaryFile()
+        cmd = '%(binary)s %(flags)s %(database)s > %(file)s' % {
+            'binary': self.binary,
+            'flags': self.get_flags(),
+            'database': self.name,
+            'file': tmp_file.name,
+        }
+        print cmd # FIXME
+        os.system(cmd)
+        return tmp_file
+
 class PostProcess(PostProcessBase):
     """
     This classes loads the specified database `postprocessing` config option