Add project release config and cleanup project setup. (#398)

* Add project release config and use Travis build stages.

Refs #378.

* Restructure project to use src/ and tests/ directories.

* Fix testing.

* Remove eggs.

* More fixes.

- isort and flake8 config
- manifest template update
- tox ini extension
- docs build fixes
- docs content fixes

* Docs and license cleanup.

1 files changed, 170 insertions, 0 deletions

diff --git a/src/tablib/packages/dbfpy3/utils.py b/src/tablib/packages/dbfpy3/utils.py
new file mode 100644
index 0000000..856ade8
--- /dev/null
+++ b/src/tablib/packages/dbfpy3/utils.py
@@ -0,0 +1,170 @@
+"""String utilities.
+
+TODO:
+  - allow strings in getDateTime routine;
+"""
+"""History (most recent first):
+11-feb-2007 [als]   added INVALID_VALUE
+10-feb-2007 [als]   allow date strings padded with spaces instead of zeroes
+20-dec-2005 [yc]    handle long objects in getDate/getDateTime
+16-dec-2005 [yc]    created from ``strutil`` module.
+"""
+
+__version__ = "$Revision: 1.4 $"[11:-2]
+__date__ = "$Date: 2007/02/11 08:57:17 $"[7:-2]
+
+import datetime
+import time
+
+
+def unzfill(str):
+    """Return a string without ASCII NULs.
+
+    This function searchers for the first NUL (ASCII 0) occurance
+    and truncates string till that position.
+
+    """
+    try:
+        return str[:str.index(b'\0')]
+    except ValueError:
+        return str
+
+
+def getDate(date=None):
+    """Return `datetime.date` instance.
+
+    Type of the ``date`` argument could be one of the following:
+        None:
+            use current date value;
+        datetime.date:
+            this value will be returned;
+        datetime.datetime:
+            the result of the date.date() will be returned;
+        string:
+            assuming "%Y%m%d" or "%y%m%dd" format;
+        number:
+            assuming it's a timestamp (returned for example
+            by the time.time() call;
+        sequence:
+            assuming (year, month, day, ...) sequence;
+
+    Additionaly, if ``date`` has callable ``ticks`` attribute,
+    it will be used and result of the called would be treated
+    as a timestamp value.
+
+    """
+    if date is None:
+        # use current value
+        return datetime.date.today()
+    if isinstance(date, datetime.date):
+        return date
+    if isinstance(date, datetime.datetime):
+        return date.date()
+    if isinstance(date, (int, float)):
+        # date is a timestamp
+        return datetime.date.fromtimestamp(date)
+    if isinstance(date, str):
+        date = date.replace(" ", "0")
+        if len(date) == 6:
+            # yymmdd
+            return datetime.date(*time.strptime(date, "%y%m%d")[:3])
+        # yyyymmdd
+        return datetime.date(*time.strptime(date, "%Y%m%d")[:3])
+    if hasattr(date, "__getitem__"):
+        # a sequence (assuming date/time tuple)
+        return datetime.date(*date[:3])
+    return datetime.date.fromtimestamp(date.ticks())
+
+
+def getDateTime(value=None):
+    """Return `datetime.datetime` instance.
+
+    Type of the ``value`` argument could be one of the following:
+        None:
+            use current date value;
+        datetime.date:
+            result will be converted to the `datetime.datetime` instance
+            using midnight;
+        datetime.datetime:
+            ``value`` will be returned as is;
+        string:
+            *** CURRENTLY NOT SUPPORTED ***;
+        number:
+            assuming it's a timestamp (returned for example
+            by the time.time() call;
+        sequence:
+            assuming (year, month, day, ...) sequence;
+
+    Additionaly, if ``value`` has callable ``ticks`` attribute,
+    it will be used and result of the called would be treated
+    as a timestamp value.
+
+    """
+    if value is None:
+        # use current value
+        return datetime.datetime.today()
+    if isinstance(value, datetime.datetime):
+        return value
+    if isinstance(value, datetime.date):
+        return datetime.datetime.fromordinal(value.toordinal())
+    if isinstance(value, (int, float)):
+        # value is a timestamp
+        return datetime.datetime.fromtimestamp(value)
+    if isinstance(value, str):
+        raise NotImplementedError("Strings aren't currently implemented")
+    if hasattr(value, "__getitem__"):
+        # a sequence (assuming date/time tuple)
+        return datetime.datetime(*tuple(value)[:6])
+    return datetime.datetime.fromtimestamp(value.ticks())
+
+
+class classproperty(property):
+    """Works in the same way as a ``property``, but for the classes."""
+
+    def __get__(self, obj, cls):
+        return self.fget(cls)
+
+
+class _InvalidValue(object):
+
+    """Value returned from DBF records when field validation fails
+
+    The value is not equal to anything except for itself
+    and equal to all empty values: None, 0, empty string etc.
+    In other words, invalid value is equal to None and not equal
+    to None at the same time.
+
+    This value yields zero upon explicit conversion to a number type,
+    empty string for string types, and False for boolean.
+
+    """
+
+    def __eq__(self, other):
+        return not other
+
+    def __ne__(self, other):
+        return not (other is self)
+
+    def __bool__(self):
+        return False
+
+    def __int__(self):
+        return 0
+    __long__ = __int__
+
+    def __float__(self):
+        return 0.0
+
+    def __str__(self):
+        return ""
+
+    def __unicode__(self):
+        return ""
+
+    def __repr__(self):
+        return "<INVALID>"
+
+# invalid value is a constant singleton
+INVALID_VALUE = _InvalidValue()
+
+# vim: set et sts=4 sw=4 :