From 37bb4a4c537ea2f9bd916f3e031c759e61bf49f7 Mon Sep 17 00:00:00 2001
From: Victor Chahuneau <vchahune@cs.cmu.edu>
Date: Thu, 21 Jun 2012 17:27:48 -0400
Subject: Allow SA rule extraction to write to a python buffer

+ very small sa-extract cleanup
---
 python/cdec/scfg/extractor.py | 12 +++++------
 sa-extract/cn.py              | 46 +++++++++++++++++++++----------------------
 sa-extract/manager.py         |  2 +-
 sa-extract/model.py           |  5 -----
 sa-extract/rulefactory.pyx    | 15 +++++++-------
 5 files changed, 38 insertions(+), 42 deletions(-)

diff --git a/python/cdec/scfg/extractor.py b/python/cdec/scfg/extractor.py
index 9f1e1137..0a45ddb8 100644
--- a/python/cdec/scfg/extractor.py
+++ b/python/cdec/scfg/extractor.py
@@ -1,5 +1,5 @@
-#!/usr/bin/env python
 import StringIO
+from itertools import chain
 
 import clex
 import rulefactory
@@ -9,12 +9,12 @@ import cdat
 import sym
 import log
 
-log.level = -1
-
 from features import EgivenFCoherent, SampleCountF, CountEF,\
         MaxLexEgivenF, MaxLexFgivenE, IsSingletonF, IsSingletonFE
 from features import contextless
 
+log.level = -1
+
 class Output(StringIO.StringIO):
     def close(self):
         pass
@@ -22,8 +22,6 @@ class Output(StringIO.StringIO):
     def __str__(self):
         return self.getvalue()
 
-from itertools import chain
-
 def get_cn(sentence):
     sentence = chain(('<s>',), sentence.split(), ('</s>',))
     sentence = (sym.fromstring(word, terminal=True) for word in sentence)
@@ -93,9 +91,11 @@ class GrammarExtractor:
         self.models = tuple(contextless(feature) for feature in self.models)
 
     def grammar(self, sentence):
+        if isinstance(sentence, unicode):
+            sentence = sentence.encode('utf8')
         out = Output()
         cn = get_cn(sentence)
-        self.factory.input_file(cn, out)
+        self.factory.input(cn, output=out)
         return str(out)
 
 def main(config):
diff --git a/sa-extract/cn.py b/sa-extract/cn.py
index e534783f..6e45bcf9 100644
--- a/sa-extract/cn.py
+++ b/sa-extract/cn.py
@@ -4,11 +4,8 @@
 
 # vim:tabstop=4:autoindent:expandtab
 
-import sys
-import math
 import sym
 import log
-import sgml
 
 epsilon = sym.fromstring('*EPS*');
 
@@ -142,23 +139,26 @@ class ConfusionNet(object):
                 
     
 
-
-#file = open(sys.argv[1], "rb")
-#sent = sgml.process_sgml_line(file.read())
-#print sent
-#cn = ConfusionNet(sent)
-#print cn
-#results = cn.listdown()
-#for result in results:
-#    print sym.tostring(result)
-#print cn.next(0);
-#print cn.next(1);
-#print cn.next(2);
-#print cn.next(3);
-#print cn
-#cn = ConfusionNet()
-#k = 0
-#while (cn.read(file)):
-#  print cn
-  
-#print cn.stats
+"""
+import sys
+import sgml
+file = open(sys.argv[1], "rb")
+sent = sgml.process_sgml_line(file.read())
+print sent
+cn = ConfusionNet(sent)
+print cn
+results = cn.listdown()
+for result in results:
+    print sym.tostring(result)
+print cn.next(0);
+print cn.next(1);
+print cn.next(2);
+print cn.next(3);
+print cn
+cn = ConfusionNet()
+k = 0
+while (cn.read(file)):
+  print cn
+ 
+print cn.stats
+"""
diff --git a/sa-extract/manager.py b/sa-extract/manager.py
index 767192c1..3a079c2a 100644
--- a/sa-extract/manager.py
+++ b/sa-extract/manager.py
@@ -1,5 +1,6 @@
 import csuf
 import cdat
+import cintlist
 
 class Sampler(object):
 	'''A Sampler implements a logic for choosing
@@ -15,7 +16,6 @@ class Sampler(object):
 		return cintlist.CIntList()
 
 
-
 class Extractor(object):
 	'''Extractor is responsible for extracting rules
 	from a given context; once a sentence id/location
diff --git a/sa-extract/model.py b/sa-extract/model.py
index 66c51051..bcdf129a 100644
--- a/sa-extract/model.py
+++ b/sa-extract/model.py
@@ -1,4 +1,3 @@
-
 class Model(object):
     def __init__(self, name=None):
         object.__init__(self)
@@ -6,7 +5,3 @@ class Model(object):
             self.name = self.__class__.__name__
         else:
             self.name = name
-
-    def input(self, fwords, meta):
-        pass
-
diff --git a/sa-extract/rulefactory.pyx b/sa-extract/rulefactory.pyx
index 20ea80d2..792489c4 100644
--- a/sa-extract/rulefactory.pyx
+++ b/sa-extract/rulefactory.pyx
@@ -1321,7 +1321,7 @@ cdef class HieroCachingRuleFactory:
           candidate.append([next_id,curr[1]+jump])
     return sorted(result);
 
-  def input(self, fwords, meta):
+  def input(self, fwords, meta=None, output=None):
     '''When this function is called on the RuleFactory,
     it looks up all of the rules that can be used to translate
     the input sentence'''
@@ -1342,13 +1342,14 @@ cdef class HieroCachingRuleFactory:
     nodes_isteps_away_buffer = {}
     hit = 0
     reachable_buffer = {}
-    #print "id = ",meta
-    #print "rule_file = ",self.rule_file
-    dattrs = sgml.attrs_to_dict(meta)
-    id = dattrs.get('id', 'NOID')
-    if self.per_sentence_grammar:
+    if meta:
+        dattrs = sgml.attrs_to_dict(meta)
+        id = dattrs.get('id', 'NOID')
+        self.excluded_sent_id = int(dattrs.get('exclude', '-1'))
+    if output:
+      self.rule_filehandler = output
+    elif self.per_sentence_grammar:
       self.rule_filehandler = open(self.rule_file+'.'+id, 'w')
-    self.excluded_sent_id = int(dattrs.get('exclude', '-1'))
 
     #print "max_initial_size = %i" % self.max_initial_size
 
-- 
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