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index.js
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index.js
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// morpheus v.0.4.0
var _ = require('underscore');
var s = require('sandhi');
var c = s.const;
var u = s.u;
var sandhi = s.sandhi;
var inc = u.include;
var log = u.log;
var p = u.p;
var vigraha = require('vigraha');
var outer = require('./lib/outer');
var subanta = require('subanta');
var tiNanta = require('tiNanta');
var salita = require('salita-component');
var async = require("async");
var dbpath = 'http://localhost:5984';
var Relax = require('relax-component');
var relax = new Relax(dbpath);
relax.dbname('sa');
var debug = (process.env.debug == 'true') ? true : false;
module.exports = morpheus();
var path = require('path');
var fs = require('fs');
function morpheus() {
if (!(this instanceof morpheus)) return new morpheus();
this.queries = [];
}
// здесь - в базе есть отметка uchange на всех отбрасываемых - на terms, etc
function getIndecl(flakes, cb) {
var keys = {keys: flakes};
var view = 'sa/byIndecl';
relax
.postView(view)
.send(keys)
.query({include_docs: true})
.end(function(err, res) {
if (err) return cb(err, null);
let rows = JSON.parse(res.text.trim()).rows;
let adocs = rows.map(function(row) { return row.doc; });
let astems = _.uniq(adocs.map(function(a) { return a.query;}));
let indecls = _.select(adocs, function(doc) { return doc.type != 'BG'; });
let istems = _.uniq(indecls.map(function(a) { return a.query;}));
this.istems = istems;
let aqueries = [];
astems.forEach(function(astem) {
// let adoc = _.find(adocs, function(doc) { return doc.query == astem; });
let idocs = _.select(adocs, function(doc) { return doc.query == astem; });
idocs.forEach(function(adoc) {
if (adoc.ind) {
let aquery = {ind: true, type: adoc.type, query: adoc.query, slp: adoc.slp, dicts: [adoc._id]};
aqueries.push(aquery);
}
if (adoc.type == 'BG') {
let aquery = {ind: true, type: adoc.type, query: adoc.query, slp: adoc.slp, dicts: [adoc._id]};
aqueries.push(aquery);
}
if (adoc.type == 'term') {
let aquery = {ind: true, type: adoc.type, query: adoc.query, pos: adoc.pos, var: adoc.var, dict: adoc.dict, gend: adoc.gend, sups: adoc.sups, dicts: [adoc._id]};
aqueries.push(aquery);
}
});
});
cb(err, aqueries);
});
}
function getChangeable(cleans, flakes, cb) {
let chstems = _.difference(flakes, this.istems);
let queries = []; // все plains должны появиться в stemmer ?
chstems.forEach(function(flake) {
let qs = subanta.query(flake);
qs.forEach(function(q) {
q.flake = flake;
});
queries = queries.concat(qs);
});
tiNanta.query(chstems, function(err, tqueries) {
let qskeys = _.uniq(queries.map(function(q) {return q.pada;}));
let qtkeys = _.uniq(tqueries.map(function(q) {return q.dhatu;}));
let qkeys = _.compact(qskeys.concat(qtkeys));
qkeys = _.uniq(qkeys);
let totqs = queries.concat(tqueries);
getBD(qkeys, function(err, dbdicts) {
let namas = _.select(dbdicts, function(d) { return d.name; });
let verbs = _.select(dbdicts, function(d) { return d.verb; });
let ndicts = namas.map(function(d) { return d.query; });
let vdicts = verbs.map(function(d) { return d.query; });
let scleans = _.select(queries, function(q) { return inc(ndicts, q.pada); });
let tcleans = _.select(tqueries, function(q) { return inc(vdicts, q.dhatu); });
let res = {squeries: scleans, tqueries: tcleans, namas: namas, verbs: verbs};
cb(null, res);
});
});
}
morpheus.prototype.run = function(samasa, next, cb) {
let cleans = outer.correct(samasa, next);
if (cleans.length == 0) {
throw new Error('no cleans');
let res = {queries: [], pdchs: []};
cb(res);
return;
}
let chains;
let totalchains = [];
cleans.forEach(function(clean) {
chains = vigraha.pdchs(clean);
totalchains = totalchains.concat(chains);
});
if (totalchains.length == 0) totalchains = [cleans];
var flakes = _.uniq(_.flatten(totalchains));
async.series([
function(cb) {
getIndecl(flakes, cb);
},
function(cb) {
getChangeable(cleans, flakes, cb);
},
], function (err, results) {
if (!results[1]) {
log('NO RES 1 - samasa:', samasa);
throw new Error('no res 1');
let res = {queries: [], pdchs: []};
cb(res);
return;
}
let amorphs = results[0];
let squeries = results[1].squeries;
let tqueries = results[1].tqueries;
let namas = results[1].namas;
let verbs = results[1].verbs;
let smorphs = mapDict2query(results[1].squeries, namas);
let tmorphs = mapDict2query(results[1].tqueries, verbs);
let aflakes = _.uniq(results[0].map(function(q) { return q.query; }));
let sflakes = _.uniq(smorphs.map(function(q) { return q.flake; }));
let tflakes = _.uniq(tmorphs.map(function(q) { return q.flake; }));
let totalflakes = _.uniq(aflakes.concat(sflakes).concat(tflakes));
let pdchs = filterChain(totalchains, totalflakes);
let qcleans = amorphs.concat(smorphs).concat(tmorphs);
let result = {queries: qcleans, pdchs: pdchs};
cb(result);
});
}
function mapDict2query(queries, dicts) {
let qmorphs = [];
queries.forEach(function(cq) {
let q = JSON.parse(JSON.stringify(cq));
q.dicts = [];
dicts.forEach(function(d) {
if (q.verb && d.verb) {
if (q.dhatu == d.query) { // !d.slps - to strip samasas
q.dicts.push(d._id);
}
} else {
if (q.name && d.name && q.pada == d.query && q.var == d.var) {
if (d.gend == 'mfn') q.dicts.push(d._id);
else if (d.gend == q.gend[0]) q.dicts.push(d._id);
}
// else if (q.plain && d.name && q.pada == d.query && q.var == d.var) {
else if (q.plain && d.name && q.pada == d.query) {
let alreadies = _.select(qmorphs, function(already) { return already.pada == q.pada; });
if (alreadies.length > 0) return;
q.dicts.push(d._id);
}
}
});
if (q.dicts.length > 0) qmorphs.push(q);
});
return qmorphs;
}
function filterChain(chains, flakes) {
var pdchs = [];
var base = Math.pow(chains[0].join('').length, 2);
chains.forEach(function(chain) {
let pdch = {chain: chain, weight: 1, ok: 1};
chain.forEach(function(flake) {
if (inc(flakes, flake)) {
pdch.weight += Math.pow(flake.length, 3);
} else {
let size = flake.length;
let fake = Array(size).join('x');
let index = chain.indexOf(flake);
chain[index] = fake;
pdch.ok = 0;
}
});
let cbase = base * chain.length;
pdch.weight = (pdch.weight/cbase).toFixed(2);
pdchs.push(pdch);
});
if (pdchs.length == 0) return [];
let cleans = _.sortBy(pdchs, function(pdch) { return pdch.weight; }).reverse();
cleans = cleans.slice(0, 15);
let qpdchs = _.select(cleans, function(pdch) { return pdch.ok; });
let qchains = qpdchs.map(function(pdch) { return pdch.chain; });
if (qchains.length > 0) return qchains;
return [];
}
// function options(samasa, next) {
// var opt = {};
// opt.fin = u.last(samasa);
// opt.penult = u.penult(samasa);
// return opt;
// }
function getBD(qkeys, cb) {
var keys = {keys: qkeys};
relax.dbname('sa');
var view = 'sa/byStem';
relax
.postView(view)
.send(keys)
.query({include_docs: true})
.end(function(err, res) {
if (err) return cb(err, null);
var rows = JSON.parse(res.text.trim()).rows;
var docs = rows.map(function(row) { return row.doc; });
cb(err, docs);
});
}
function syllables(flake) {
var syms = flake.split('');
var beg = syms[0];
var vows = (u.isVowel(beg)) ? 1 : 0;
syms.forEach(function(s) {
if (u.isConsonant(s)) vows+=1;
else if (s == c.virama) vows-=1;
});
return vows;
}
function uniqDict(dicts) {
var keys = {};
var uniqs = [];
dicts.forEach(function(d) {
if (!keys[d._id]) {
uniqs.push(d);
keys[d._id] = true;
}
});
return uniqs;
}