/* Copyright (C) 2014 J.F.Dockes
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the
* Free Software Foundation, Inc.,
* 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef TEST_SYNGROUPS
#include "autoconfig.h"
#include "syngroups.h"
#include "log.h"
#include "smallut.h"
#include <errno.h>
#include <unordered_map>
#include <fstream>
#include <iostream>
#include <cstring>
using namespace std;
// Note that we are storing each term twice. I don't think that the
// size could possibly be a serious issue, but if it was, we could
// reduce the storage a bit by storing (short hash)-> vector<int>
// correspondances in the direct map, and then checking all the
// resulting groups for the input word.
//
// As it is, a word can only index one group (the last it is found
// in). It can be part of several groups though (appear in
// expansions). I really don't know what we should do with multiple
// groups anyway
class SynGroups::Internal {
public:
Internal() : ok(false) {
}
bool ok;
// Term to group num
std::unordered_map<string, unsigned int> terms;
// Group num to group
vector<vector<string> > groups;
};
bool SynGroups::ok()
{
return m && m->ok;
}
SynGroups::~SynGroups()
{
delete m;
}
SynGroups::SynGroups()
: m(new Internal)
{
}
bool SynGroups::setfile(const string& fn)
{
LOGDEB("SynGroups::setfile(" << fn << ")\n");
if (!m) {
m = new Internal;
if (!m) {
LOGERR("SynGroups:setfile:: new Internal failed: no mem ?\n");
return false;
}
}
if (fn.empty()) {
delete m;
m = 0;
return true;
}
ifstream input;
input.open(fn.c_str(), ios::in);
if (!input.is_open()) {
LOGSYSERR("SynGroups:setfile", "open", fn);
return false;
}
string cline;
bool appending = false;
string line;
bool eof = false;
int lnum = 0;
for (;;) {
cline.clear();
getline(input, cline);
if (!input.good()) {
if (input.bad()) {
LOGERR("Syngroup::setfile(" << fn << "):Parse: input.bad()\n");
return false;
}
// Must be eof ? But maybe we have a partial line which
// must be processed. This happens if the last line before
// eof ends with a backslash, or there is no final \n
eof = true;
}
lnum++;
{
string::size_type pos = cline.find_last_not_of("\n\r");
if (pos == string::npos) {
cline.clear();
} else if (pos != cline.length()-1) {
cline.erase(pos+1);
}
}
if (appending)
line += cline;
else
line = cline;
// Note that we trim whitespace before checking for backslash-eol
// This avoids invisible whitespace problems.
trimstring(line);
if (line.empty() || line.at(0) == '#') {
if (eof)
break;
continue;
}
if (line[line.length() - 1] == '\\') {
line.erase(line.length() - 1);
appending = true;
continue;
}
appending = false;
vector<string> words;
if (!stringToStrings(line, words)) {
LOGERR("SynGroups:setfile: " << fn << ": bad line " << lnum <<
": " << line << "\n");
continue;
}
if (words.empty())
continue;
if (words.size() == 1) {
LOGERR("Syngroup::setfile(" << fn << "):single term group at line "
<< lnum << " ??\n");
continue;
}
m->groups.push_back(words);
for (const auto& word : words) {
m->terms[word] = m->groups.size()-1;
}
LOGDEB1("SynGroups::setfile: group: [" <<
stringsToString(m->groups.back()) << "]\n");
}
m->ok = true;
return true;
}
vector<string> SynGroups::getgroup(const string& term)
{
vector<string> ret;
if (!ok())
return ret;
const auto it1 = m->terms.find(term);
if (it1 == m->terms.end()) {
LOGDEB1("SynGroups::getgroup: [" << term<<"] not found in direct map\n");
return ret;
}
unsigned int idx = it1->second;
if (idx >= m->groups.size()) {
LOGERR("SynGroups::getgroup: line index higher than line count !\n");
return ret;
}
return m->groups[idx];
}
#else
#include "syngroups.h"
#include "log.h"
#include <string>
#include <iostream>
#include <vector>
#include <cstdlib>
#include <cstdio>
using namespace std;
static char *thisprog;
static char usage [] =
"syngroups <synfilename> <word>\n"
" \n\n"
;
static void Usage(void)
{
fprintf(stderr, "%s: usage:\n%s", thisprog, usage);
exit(1);
}
static int op_flags;
#define OPT_MOINS 0x1
#define OPT_s 0x2
#define OPT_b 0x4
int main(int argc, char **argv)
{
thisprog = argv[0];
argc--; argv++;
if (argc != 2) {
Usage();
}
string fn = *argv++;argc--;
string word = *argv++;argc--;
DebugLog::getdbl()->setloglevel(DEBDEB1);
DebugLog::setfilename("stderr");
SynGroups syns;
syns.setfile(fn);
if (!syns.ok()) {
cerr << "Initialization failed\n";
return 1;
}
vector<string> group = syns.getgroup(word);
cout << group.size() << " terms in group\n";
for (vector<string>::const_iterator it = group.begin();
it != group.end(); it++) {
cout << "[" << *it << "] ";
}
cout << endl;
return 0;
}
#endif