Adding Silpa framework

1 files changed, 132 insertions, 0 deletions

diff --git a/silpa/modules/lemmatizer/lemmatizer.py b/silpa/modules/lemmatizer/lemmatizer.py
new file mode 100644
index 0000000..8b9a35c
--- /dev/null
+++ b/silpa/modules/lemmatizer/lemmatizer.py
@@ -0,0 +1,132 @@
+#! /usr/bin/env python
+# -*- coding: utf-8 -*-
+
+import sys  
+import codecs  
+import os  
+import string
+import curses.ascii 
+class Lemmatizer:
+
+	def __init__(self):
+		self.input_filename =""
+		self.output_filename = ""
+		self.rules_file = ""
+		self.rulesDict = dict()
+		
+	def Lemmatize(self):
+		result = ""
+		self.rulesDict = self.LoadRules()
+		if self.input_filename :
+			uni_file = codecs.open(self.input_filename, encoding = 'utf-8', errors = 'ignore')
+		else :
+			uni_file = codecs.open(sys.stdin, encoding = 'utf-8', errors = 'ignore')			
+		text = ""
+		if self.output_filename :
+			output_file = codecs.open(self.output_filename, encoding = 'utf-8', errors = 'ignore',  mode='w+')			
+		line_number = 0
+		while 1:
+   			text = uni_file.readline()
+   			line_number = line_number + 1
+			if text == "":
+				break
+			words = text.split(" ")
+			word_count = len(words)
+			word_iter = 0
+			word = ""
+			while word_iter < word_count:
+				word = words[word_iter]
+				word_length = len(word)
+				print word_length
+				suffix_pos_itr = 2
+				while suffix_pos_itr   <  word_length : 
+					suffix = word[suffix_pos_itr:word_length]
+					if suffix in self.rulesDict:
+						word = word[0:suffix_pos_itr] +  self.rulesDict[suffix]
+						break
+					suffix_pos_itr = suffix_pos_itr + 1	
+				word_iter = word_iter + 1
+				print word	
+				result = result + word + ""
+			result="\n"	
+		return result
+	def Lemmatize(self, text):
+		result = ""
+		self.rulesDict = self.LoadRules()
+		words=text.split(" ")
+		word_count=len(words)
+		word_iter=0
+		word=""
+		while word_iter < word_count:
+			word = words[word_iter]
+			word = self.trim(word)
+			word_length = len(word)
+			suffix_pos_itr = 2
+			while suffix_pos_itr < word_length :
+				suffix = word[suffix_pos_itr:word_length]
+				if suffix in self.rulesDict:
+					word= word[0:suffix_pos_itr] +  self.rulesDict[suffix]
+					break;
+				suffix_pos_itr = suffix_pos_itr+1	
+			word_iter = word_iter+1
+			#print word	
+			result = result + word + " "
+		return result
+					
+	def LoadRules(self):	
+		print "Loading the rules..."
+		rules_dict = dict()
+		line = []
+		line_number = 0
+		rule_number = 0
+		rules_file = codecs. open(self.rules_file,encoding='utf-8', errors='ignore')
+		while 1:
+			line_number = line_number +1 
+   			text = unicode( rules_file.readline())
+			if text == "":
+			      break
+			if text[0] == '#': 
+			      continue  #this is a comment - ignore
+			text = text.split("#")[0]   #remove the comment part of the line     
+			line_number = line_number +1       
+			line = text.strip()  # remove unwanted space
+			if(line == ""):
+				  continue 
+			if(len(line.split("=")) != 2):
+					print "[Error] Syntax Error in the Rules. Line number: ",  line_number
+				  	print "Line: "+ text
+				  	continue 
+	 		lhs = line.split("=") [ 0 ]  .strip()
+	 		rhs = line.split("=") [ 1 ]  .strip()
+	 		if(len(rhs)>0):
+	 			if(lhs[0]=='"'):
+	 				lhs=lhs[1:len(lhs)] # if the string is "quoted"
+	 			if(lhs[len(lhs)-1]=='"'):
+	 				lhs=lhs[0:len(lhs)-1] # if the string is "quoted"
+	 		if(len(rhs)>0):
+	 			if(rhs[0]=='"'):
+	 				rhs=rhs[1:len(rhs)]  # if the string is "quoted"
+	 			if(rhs[len(rhs)-1]=='"'):
+	 				rhs=rhs[0:len(rhs)-1]	 # if the string is "quoted"			
+	 		rule_number=rule_number+1
+			rules_dict[lhs]=rhs
+			#print "[", rule_number ,"] " +lhs + " : " +rhs
+		print "Found ",rule_number, " rules."
+		return rules_dict
+	
+	def trim(self,word):
+		punctuations=['~','!','@','#','$','%','^','&','*','(',')','-','+','_','=','{','}','|' ,':',';','<','>','\,','.','?']
+		word=word.strip()
+		index=len(word)-1
+		while index>0:
+			if word[index] in punctuations:
+				word=word[0:index]
+			else:
+				break 
+			index=index-1	
+		return word
+if __name__ == "__main__":
+	lemmatizer= Lemmatizer()
+	lemmatizer.rules_file="/home/santhosh/www/malayalam.map"
+	lemmatizer.Lemmatize("മുദ്രാവാക്യവുമായി മുറ്റത്തില്‍")
+