From 32c39bcaf72a7dc08968909d8b6a8b108ac923b4 Mon Sep 17 00:00:00 2001
From: txh18 <cloudygooseg@gmail.com>
Date: Sun, 13 Dec 2015 20:58:02 +0800
Subject: move lmvocab:read_line to lmutil

---
 nerv/examples/lmptb/lmptb/lmfeeder.lua    |  3 ++-
 nerv/examples/lmptb/lmptb/lmseqreader.lua |  3 ++-
 nerv/examples/lmptb/lmptb/lmutil.lua      | 27 +++++++++++++++++++++++++++
 nerv/examples/lmptb/lmptb/lmvocab.lua     | 12 ------------
 4 files changed, 31 insertions(+), 14 deletions(-)

diff --git a/nerv/examples/lmptb/lmptb/lmfeeder.lua b/nerv/examples/lmptb/lmptb/lmfeeder.lua
index 34631bf..e140f38 100644
--- a/nerv/examples/lmptb/lmptb/lmfeeder.lua
+++ b/nerv/examples/lmptb/lmptb/lmfeeder.lua
@@ -1,4 +1,5 @@
 require 'lmptb.lmvocab'
+require 'lmptb.lmutil'
 
 local Feeder = nerv.class("nerv.LMFeeder")
 
@@ -39,7 +40,7 @@ function Feeder:refresh_stream(id)
     local st = self.streams[id]
     if (st.store[st.head] ~= nil) then return end
     if (self.fh == nil) then return end
-    local list = self.vocab:read_line(self.fh)
+    local list = nerv.LMUtil.read_line(self.fh)
     if (list == nil) then --file has end
         printf("%s file expires, closing.\n", self.log_pre)
         self.fh:close() 
diff --git a/nerv/examples/lmptb/lmptb/lmseqreader.lua b/nerv/examples/lmptb/lmptb/lmseqreader.lua
index ed791d2..b603911 100644
--- a/nerv/examples/lmptb/lmptb/lmseqreader.lua
+++ b/nerv/examples/lmptb/lmptb/lmseqreader.lua
@@ -1,4 +1,5 @@
 require 'lmptb.lmvocab'
+require 'lmptb.lmutil'
 --require 'tnn.init'
 
 local LMReader = nerv.class("nerv.LMSeqReader")
@@ -58,7 +59,7 @@ function LMReader:refresh_stream(id)
     local st = self.streams[id]
     if (st.store[st.head] ~= nil) then return end
     if (self.fh == nil) then return end
-    local list = self.vocab:read_line(self.fh)
+    local list = nerv.LMUtil.read_line(self.fh)
     if (list == nil) then --file has end
         printf("%s file expires, closing.\n", self.log_pre)
         self.fh:close() 
diff --git a/nerv/examples/lmptb/lmptb/lmutil.lua b/nerv/examples/lmptb/lmptb/lmutil.lua
index 71e8e17..27b4b10 100644
--- a/nerv/examples/lmptb/lmptb/lmutil.lua
+++ b/nerv/examples/lmptb/lmptb/lmutil.lua
@@ -1,11 +1,38 @@
 local Util = nerv.class("nerv.LMUtil")
 
+local mysplit = function(inputstr, sep)
+    if sep == nil then
+        sep = "%s"
+    end
+    local t={} ; i=1
+    for str in string.gmatch(inputstr, "([^"..sep.."]+)") do
+        t[i] = str
+        i = i + 1
+    end
+    return t
+end
+
 --function rounds a number to the given number of decimal places.
 function Util.round(num, idp)
     local mult = 10^(idp or 0)
     return math.floor(num * mult + 0.5) / mult
 end
 
+--fh: file_handle
+--Returns: a list of tokens(string) in the line, if there is no "</s>" at the end, the function will at it, if nothing to read, returns nil
+function Util.read_line(fh)
+    local l_str, list
+    
+    repeat
+        l_str = fh:read("*line")
+        if (l_str == nil) then return nil end
+        list = mysplit(l_str)
+    until #list >= 1
+
+    return list
+end
+
+
 --list: table, list of string(word)
 --vocab: nerv.LMVocab
 --ty: nerv.CuMatrix
diff --git a/nerv/examples/lmptb/lmptb/lmvocab.lua b/nerv/examples/lmptb/lmptb/lmvocab.lua
index 3d256c0..2ad0e7e 100644
--- a/nerv/examples/lmptb/lmptb/lmvocab.lua
+++ b/nerv/examples/lmptb/lmptb/lmvocab.lua
@@ -101,18 +101,6 @@ function Vocab:get_word_id(key)
     return self.map_id(key)
 end
 
---fh: file_handle
---Returns: a list of tokens(string) in the line, if there is no "</s>" at the end, the function will at it, if nothing to read, returns nil
-function Vocab:read_line(fh)
-    local l_str = fh:read("*line")
-    if (l_str == nil) then return nil end
-    local list = mysplit(l_str)
-    if (list[(#list)] ~= self.sen_end_token) then
-        list[#list + 1] = self.sen_end_token
-    end
-    return list
-end
-
 --fn: string
 --Add all words in fn to the vocab
 function Vocab:build_file(fn)
-- 
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