Add support for exporting to JSON with the "-t json" target flag

Author: emmettbutler

lib/tiddlywiki.py

@@ -12,7 +12,7 @@
 # that translate between Twee and TiddlyWiki output seamlessly.
 #
 
-import re, datetime, time, os, sys
+import re, datetime, time, os, sys, json
 import PyRSS2Gen as rss
 
 #
@@ -62,6 +62,13 @@ def toHtml (self, app = None, target = None, order = None):
 			output += '</div></body></html>'
 
 		return output
+
+	def toJson (self):
+		output = {"data": []}
+		order = self.tiddlers.keys()
+		for i in order:
+			output['data'].append(self.tiddlers[i].toJson(self.author))
+		return json.dumps(output)
 
 	def toRtf (self, order = None):
 		"""Returns RTF source code for this TiddlyWiki."""
@@ -263,6 +270,22 @@ def toHtml (self, author = 'twee'):
 		return output
 
 
+	def toJson (self, author = 'twee'):
+		now = time.localtime()
+		ret = {}
+
+		ret['title'] = self.title
+		ret['tags'] = []
+		for tag in self.tags:
+			ret['tags'].append(tag)
+		ret['modified'] = encode_date(self.modified)
+		ret['created'] = encode_date(self.created)
+		ret['modifier'] = author
+		ret['text'] = self.text
+		
+		return ret
+
+		
 	def toTwee (self):
 		"""Returns a Twee representation of this tiddler."""
 		output = ':: ' + self.title

twee

@@ -76,27 +76,32 @@ def main (argv):
 
 	# output the target header
 
-	if (target != 'none') and (target != 'plugin'):
+	if (target != 'none') and (target != 'plugin') and (target != 'json'):
 		file = open(scriptPath + os.sep + 'targets' + os.sep + target \
 								+ os.sep + 'header.html')
 		print(file.read())
 		file.close()
 
 	# the tiddlers
 
-	print tw.toHtml()
+	if (target == 'json'):
+		print tw.toJson()
+	else:
+		print tw.toHtml()
 
 	# plugins
 
 	for plugin in plugins:
-		file = open(scriptPath + os.sep + 'targets' + os.sep + target \
-								+ os.sep + 'plugins' + os.sep + plugin + os.sep + 'compiled.html')
-		print(file.read())
-		file.close()
+		if target != 'json':
+			file = open(scriptPath + os.sep + 'targets' + os.sep + target \
+									+ os.sep + 'plugins' + os.sep + plugin + os.sep + 'compiled.html')
+			print(file.read())
+			file.close()
 
 	# and close it up
 
-	print '</div></html>'
+	if target != 'json':
+		print '</div></html>'
 
 
 if __name__ == '__main__':