Merge branch 'feature/paged' into develop

tablib/core.py

@@ -14,15 +14,17 @@ import os
 from helpers import *
 from packages import simplejson as json
 from packages import xlwt
+import random
+
 
 try:
     import yaml
 except ImportError, why:
     from packages import yaml
 
-	
 
-__all__ = ['Dataset', 'source']
+
+__all__ = ['Dataset', 'DataBook', 'source']
 
 __name__ = 'tablib'
 __version__ = '0.0.4'
@@ -43,8 +45,6 @@ class Dataset(object):
 		self._data = None
 		self._saved_file = None
 		self._saved_format = None
-
-
 		self._data = list(args)
 
 		try:
@@ -57,11 +57,11 @@ class Dataset(object):
 		except KeyError, why:
 			self.title = None
 
-			
+
 	def __len__(self):
 		return self.height
 
-		
+
 	def __getitem__(self, key):
 		if is_string(key):
 			if key in self.headers:
@@ -81,7 +81,7 @@ class Dataset(object):
 	def __delitem__(self, key):
 		del self._data[key]
 
-		
+
 	def __repr__(self):
 		if self.title:
 			return '<%s dataset>' % (self.title.lower())
@@ -131,13 +131,13 @@ class Dataset(object):
 		except KeyError, why:
 		    return 0
 
-		
+
 	@property
 	def json(self):
 		"""Returns JSON representation of Dataset."""
 		return json.dumps(self._package())
 
-		
+
 	@property
 	def yaml(self):
 		"""Returns YAML representation of Dataset."""
@@ -152,7 +152,7 @@ class Dataset(object):
 
 		for row in self._package(dicts=False):
 			_csv.writerow(row)
-			
+
 		return stream.getvalue()
 
 
@@ -160,7 +160,7 @@ class Dataset(object):
 	def xls(self):
 		"""Returns XLS representation of Dataset."""
 		stream = cStringIO.StringIO()
-		
+
 		wb = xlwt.Workbook()
 		ws = wb.add_sheet(self.title if self.title else 'Tabbed Dataset')
 #		for row in self._package(dicts=False):
@@ -171,12 +171,13 @@ class Dataset(object):
 		wb.save(stream)
 		return stream.getvalue()
 
-		
+
 	def append(self, row):
 		"""Adds a row to the end of Dataset"""
 		self._validate(row)
 		self._data.append(tuple(row))
 
+
 	def index(self, i, row):
 		"""Inserts a row at given position in Dataset"""
 		self._validate(row)
@@ -187,32 +188,75 @@ class Dataset(object):
 		# todo: accpept string if headers, or index nubmer
 		pass
 
-
 	def save(self, filename=None, format=None):
 		"""Saves dataset"""
 		if not format:
 			format = filename.split('.')[-1].lower()  # set format from filename
-			
+
 		if format not in FILE_EXTENSIONS:
 			raise UnsupportedFormat
-			
+
 
 		# note export format
 		# open file, save the bitch
 
-		
+
 	def export(self):
 		"""Exports Dataset to given filename or file-object."""
+		pass
 
 
+class DataBook(object):
+	"""A book of Dataset objects.
+	   Currently, this exists only for XLS workbook support.
+	"""
+
+	def __init__(self):
+		self._datasets = []
+
+
+	def add_book(self, dataset):
+		"""Add given ."""
+		if type(dataset) is Dataset:
+			self._datasets.append(dataset)
+		else:
+			raise InvalidDatasetType
+
+	@property
+	def size(self):
+		"""The number of the Datasets within DataBook."""
+		return len(self._datasets)
+
+
+	@property
+	def xls(self):
+		"""Returns XLS representation of DataBook."""
+
+		stream = cStringIO.StringIO()
+		wb = xlwt.Workbook()
+
+		for dset in self._datasets:
+			ws = wb.add_sheet(dset.title if dset.title else 'Tabbed Dataset %s' % (int(random.random() * 100000000)))
+
+			#for row in self._package(dicts=False):
+			for i, row in enumerate(dset._package(dicts=False)):
+				for j, col in enumerate(row):
+					ws.write(i, j, col)
+
+		wb.save(stream)
+		return stream.getvalue()
+
+
+		
+class InvalidDatasetType(Exception):
+	"Only Datasets can be added to a DataBook"
+
 class InvalidDimensions(Exception):
 	"Invalid size"
 
-
 class UnsupportedFormat(NotImplementedError):
 	"Format is not supported"
 
-
 	
 def source(src=None, file=None, filename=None):
 	"""docstring for import"""

tablib/tests/tests.py

@@ -10,17 +10,40 @@ data = [
 
 data = tablib.Dataset(*data, headers=headers)
 
-#print data[1]
-data.append(['kenneth' ,'reitz', 4.3])
+data.append(['Kenneth' ,'Reitz', 4.3])
 
+#print '***WITH HEADERS***'
 
-#print data.digest()
+#print 'First Names:\n',
+#print data['first_name']
 
+#print '\nYAML:'
 #print data.yaml
+#
+#print 'JSON:'
 #print data.json
+#
+#print '\nCSV:'
+#print data.csv
+#
+#
+#print '***AND WITHOUT HEADERS***'
+#
+#data.headers = None
+#
+#print '\nYAML:'
+#print data.yaml
+#
+#print 'JSON:'
+#print data.json
+#
+#print '\nCSV:'
+#print data.csv
+
+book = tablib.DataBook()
+book.add_book(data)
+book.add_book(data)
+
+print book.xls
+
 
-data.headers = None
-print data.csv
-#print len(data.xls)
-print data.yaml
-print data.json