mosesdecoder/moses/Util.cpp
2015-01-14 11:07:42 +00:00

382 lines
11 KiB
C++

// $Id$
/***********************************************************************
Moses - factored phrase-based language decoder
Copyright (C) 2006 University of Edinburgh
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
***********************************************************************/
#ifdef WIN32
#include <windows.h>
#else
#include <sys/times.h>
#include <sys/resource.h>
#endif
#include <cstring>
#include <cctype>
#include <algorithm>
#include <stdio.h>
#include <iostream>
#include <iomanip>
#include "TypeDef.h"
#include "Util.h"
#include "Timer.h"
#include "util/exception.hh"
#include "util/file.hh"
#include "moses/FF/StatelessFeatureFunction.h"
#include "moses/FF/StatefulFeatureFunction.h"
#include "moses/StaticData.h"
using namespace std;
namespace Moses
{
//global variable
Timer g_timer;
string GetTempFolder()
{
#ifdef _WIN32
char *tmpPath = getenv("TMP");
string str(tmpPath);
if (str.substr(str.size() - 1, 1) != "\\")
str += "\\";
return str;
#else
return "/tmp/";
#endif
}
const std::string ToLower(const std::string& str)
{
std::string lc(str);
std::transform(lc.begin(), lc.end(), lc.begin(), (int(*)(int))std::tolower);
return lc;
}
class BoolValueException : public util::Exception {};
template<>
bool Scan<bool>(const std::string &input)
{
std::string lc = ToLower(input);
if (lc == "yes" || lc == "y" || lc == "true" || lc == "1")
return true;
if (lc == "no" || lc == "n" || lc =="false" || lc == "0")
return false;
UTIL_THROW(BoolValueException, "Could not interpret " << input << " as a boolean. After lowercasing, valid values are yes, y, true, 1, no, n, false, and 0.");
}
bool FileExists(const std::string& filePath)
{
ifstream ifs(filePath.c_str());
return !ifs.fail();
}
const std::string Trim(const std::string& str, const std::string dropChars)
{
std::string res = str;
res.erase(str.find_last_not_of(dropChars)+1);
return res.erase(0, res.find_first_not_of(dropChars));
}
void ResetUserTime()
{
g_timer.start();
};
void PrintUserTime(const std::string &message)
{
g_timer.check(message.c_str());
}
double GetUserTime()
{
return g_timer.get_elapsed_time();
}
std::vector< std::map<std::string, std::string> > ProcessAndStripDLT(std::string &line)
{
std::vector< std::map<std::string, std::string> > meta;
std::string lline = ToLower(line);
bool check_dlt = true;
//allowed format of dlt tag
//<dlt type="name" id="name" attr="value"/>
//the type attribute is mandatory; the name should not contain any double quotation mark
//the id attribute is optional; if present, the name should not contain any double quotation mark
//only one additional attribute is possible; value can contain double quotation marks
//both name and value must be surrounded by double quotation mark
// std::cerr << "GLOBAL START" << endl;
while (check_dlt) {
size_t start = lline.find("<dlt");
if (start == std::string::npos) {
//no more dlt tags
check_dlt = false;
continue;
}
size_t close = lline.find("/>");
if (close == std::string::npos) {
// error: dlt tag is not ended
check_dlt = false;
continue;
}
//std::string dlt = Trim(lline.substr(start+4, close-start-4));
std::string dlt = Trim(line.substr(start+4, close-start-4));
line.erase(start,close-start+2);
lline.erase(start,close-start+2);
if (dlt != "") {
std::map<std::string, std::string> tmp_meta;
//check if type is present and store it
size_t start_type = dlt.find("type=");
size_t len_type=4;
if (start_type != std::string::npos) {
//type is present
//required format type="value"
//double quotation mark is required
std::string val_type;
std::string label_type = dlt.substr(start_type, len_type);
if (dlt[start_type+len_type+1] == '"') {
val_type = dlt.substr(start_type+len_type+2);
size_t close_type = val_type.find('"');
val_type = val_type.substr(0, close_type);
dlt.erase(start_type,start_type+len_type+2+close_type+1);
} else {
TRACE_ERR("DLT parse error: missing character \" for type \n");
}
label_type = Trim(label_type);
dlt = Trim(dlt);
tmp_meta[label_type] = val_type;
} else {
//type is not present
UTIL_THROW(util::Exception, "ProcessAndStripDLT(std::string &line): Attribute type for dlt tag is mandatory.");
}
//check if id is present and store it
size_t start_id = dlt.find("id=");
size_t len_id=2;
if (start_id != std::string::npos) {
//id is present
//required format id="name"
//double quotation mark is required
std::string val_id;
std::string label_id = dlt.substr(start_id, len_id);
if (dlt[start_id+len_id+1] == '"') {
val_id = dlt.substr(start_id+len_id+2);
size_t close_id = val_id.find('"');
val_id = val_id.substr(0, close_id);
dlt.erase(start_id,start_id+len_id+2+close_id+1);
} else {
TRACE_ERR("DLT parse error: missing character \" for id \n");
}
label_id = Trim(label_id);
dlt = Trim(dlt);
tmp_meta[label_id] = val_id;
} else {
//id is not present
//do nothing
}
for (size_t i = 1; i < dlt.size(); i++) {
if (dlt[i] == '=') {
std::string label = dlt.substr(0, i);
std::string val = dlt.substr(i+1);
if (val[0] == '"') {
val = val.substr(1);
// it admits any double quotation mark (but is attribute) in the value of the attribute
// it assumes that just one attribute (besides id attribute) is present in the tag,
// it assumes that the value starts and ends with double quotation mark
size_t close = val.rfind('"');
if (close == std::string::npos) {
TRACE_ERR("SGML parse error: missing \"\n");
dlt = "";
i = 0;
} else {
dlt = val.substr(close+1);
val = val.substr(0, close);
i = 0;
}
} else {
size_t close = val.find(' ');
if (close == std::string::npos) {
dlt = "";
i = 0;
} else {
dlt = val.substr(close+1);
val = val.substr(0, close);
}
}
label = Trim(label);
dlt = Trim(dlt);
tmp_meta[label] = val;
}
}
meta.push_back(tmp_meta);
}
}
// std::cerr << "GLOBAL END" << endl;
return meta;
}
std::map<std::string, std::string> ProcessAndStripSGML(std::string &line)
{
std::map<std::string, std::string> meta;
std::string lline = ToLower(line);
if (lline.find("<seg")!=0) return meta;
size_t close = lline.find(">");
if (close == std::string::npos) return meta; // error
size_t end = lline.find("</seg>");
std::string seg = Trim(lline.substr(4, close-4));
std::string text = line.substr(close+1, end - close - 1);
for (size_t i = 1; i < seg.size(); i++) {
if (seg[i] == '=' && seg[i-1] == ' ') {
std::string less = seg.substr(0, i-1) + seg.substr(i);
seg = less;
i = 0;
continue;
}
if (seg[i] == '=' && seg[i+1] == ' ') {
std::string less = seg.substr(0, i+1);
if (i+2 < seg.size()) less += seg.substr(i+2);
seg = less;
i = 0;
continue;
}
}
line = Trim(text);
if (seg == "") return meta;
for (size_t i = 1; i < seg.size(); i++) {
if (seg[i] == '=') {
std::string label = seg.substr(0, i);
std::string val = seg.substr(i+1);
if (val[0] == '"') {
val = val.substr(1);
size_t close = val.find('"');
if (close == std::string::npos) {
TRACE_ERR("SGML parse error: missing \"\n");
seg = "";
i = 0;
} else {
seg = val.substr(close+1);
val = val.substr(0, close);
i = 0;
}
} else {
size_t close = val.find(' ');
if (close == std::string::npos) {
seg = "";
i = 0;
} else {
seg = val.substr(close+1);
val = val.substr(0, close);
}
}
label = Trim(label);
seg = Trim(seg);
meta[label] = val;
}
}
return meta;
}
std::string PassthroughSGML(std::string &line, const std::string tagName, const std::string& lbrackStr, const std::string& rbrackStr)
{
string lbrack = lbrackStr; // = "<";
string rbrack = rbrackStr; // = ">";
std::string meta = "";
std::string lline = ToLower(line);
size_t open = lline.find(lbrack+tagName);
//check whether the tag exists; if not return the empty string
if (open == std::string::npos) return meta;
size_t close = lline.find(rbrack, open);
//check whether the tag is closed with '/>'; if not return the empty string
if (close == std::string::npos) {
TRACE_ERR("PassthroughSGML error: the <passthrough info/> tag does not end properly\n");
return meta;
}
// extract the tag
std::string tmp = line.substr(open, close - open + 1);
meta = line.substr(open, close - open + 1);
// strip the tag from the line
line = line.substr(0, open) + line.substr(close + 1, std::string::npos);
TRACE_ERR("The input contains a <passthrough info/> tag:" << meta << std::endl);
lline = ToLower(line);
open = lline.find(lbrack+tagName);
if (open != std::string::npos) {
TRACE_ERR("PassthroughSGML error: there are two <passthrough> tags\n");
}
return meta;
}
void PrintFeatureWeight(const FeatureFunction* ff)
{
cout << ff->GetScoreProducerDescription() << "=";
size_t numScoreComps = ff->GetNumScoreComponents();
vector<float> values = StaticData::Instance().GetAllWeights().GetScoresForProducer(ff);
for (size_t i = 0; i < numScoreComps; ++i) {
cout << " " << values[i];
}
cout << endl;
}
void ShowWeights()
{
FixPrecision(cout,6);
const vector<const StatelessFeatureFunction*>& slf = StatelessFeatureFunction::GetStatelessFeatureFunctions();
const vector<const StatefulFeatureFunction*>& sff = StatefulFeatureFunction::GetStatefulFeatureFunctions();
for (size_t i = 0; i < sff.size(); ++i) {
const StatefulFeatureFunction *ff = sff[i];
if (ff->IsTuneable()) {
PrintFeatureWeight(ff);
} else {
cout << ff->GetScoreProducerDescription() << " UNTUNEABLE" << endl;
}
}
for (size_t i = 0; i < slf.size(); ++i) {
const StatelessFeatureFunction *ff = slf[i];
if (ff->IsTuneable()) {
PrintFeatureWeight(ff);
} else {
cout << ff->GetScoreProducerDescription() << " UNTUNEABLE" << endl;
}
}
}
} // namespace