morfeusz_builder 16.5 KB
#! /usr/bin/python3
# -*- coding:utf-8 -*-
'''
Created on 21 paź 2013

@author: mlenart
'''
import os
import sys
import logging
import codecs
from morfeuszbuilder.fsa import encode
from morfeuszbuilder.fsa import convertinput
from morfeuszbuilder.fsa.fsa import FSA
from morfeuszbuilder.fsa.serializer import Serializer, SerializationMethod
from morfeuszbuilder.tagset.tagset import Tagset
from morfeuszbuilder.segrules import rulesParser
from morfeuszbuilder.utils import exceptions, limits
from optparse import OptionParser

def _checkOption(opt, parser, msg):
    if opt is None:
        print(msg, file=sys.stderr)
        parser.print_help()
        exit(1)

def _checkCondition(cond, parser, msg):
    if not cond:
        print(msg, file=sys.stderr)
        parser.print_help()
        exit(1)

def _parseListCallback(option, opt, value, parser):
    setattr(parser.values, option.dest, value.split(','))

def _checkOpen(filename, mode):
    try:
        with open(filename, mode) as _:
            pass
        if 'w' in mode:
            os.remove(filename)
    except IOError as ex:
        print(str(ex), file=sys.stderr)
        exit(1)

def _getDictFilename(opts, isGenerator):
    typeCode = 's' if isGenerator else 'a'
    fname = '%s-%s.dict' % (opts.dictName, typeCode)
    return os.path.join(opts.dictDir, fname)

def _parseOptions():
    """
    Parses commandline args
    """
    parser = OptionParser()
    parser.add_option('--input-files',
                        type='string',
                        dest='inputFiles',
                        action='callback',
                        callback=_parseListCallback,
                        metavar='FILES',
                        help='comma separated list of dictionary files')
    parser.add_option('--tagset-file',
                        dest='tagsetFile',
                        metavar='FILE',
                        help='path to the file with tagset')
    parser.add_option('--segments-file',
                        dest='segmentsFile',
                        metavar='FILE',
                        help='path to the file with segment rules')
    #~ parser.add_option('--trim-supneg',
                        #~ dest='trimSupneg',
                        #~ default=False,
                        #~ action='store_true',
                        #~ help='this option is ignored and exists only for backwards compatibility')
    parser.add_option('--dict',
                        dest='dictName',
                        help='the name of result dictionary')
    parser.add_option('--dict-dir',
                        dest='dictDir',
                        metavar='FILE',
                        default=os.getcwd(),
                        help='path to output directory (the default is current dir)')
    parser.add_option('--only-analyzer',
                        dest='onlyAnalyzer',
                        action='store_true',
                        default=False,
                        help='Generate dictionary for morphological analysis only (default is both analysis and synthesis)')
    parser.add_option('--only-generator',
                        dest='onlyGenerator',
                        action='store_true',
                        default=False,
                        help='Generate dictionary for morphological synthesis only (default is both analysis and synthesis)')
    parser.add_option('--analyzer-cpp',
                        dest='analyzerCpp',
                        metavar='FILE',
                        help='Encode analyzer dictionary data in given c++ file')
    parser.add_option('--generator-cpp',
                        dest='generatorCpp',
                        metavar='FILE',
                        help='Encode generator dictionary data in given c++ file')
    #~ parser.add_option('--use-arrays',
                        #~ dest='useArrays',
                        #~ action='store_true',
                        #~ default=False,
                        #~ help='store states reachable by 2 transitions in arrays (should speed up recognition, available only when --serialization-method=V1)')
    parser.add_option('--serialization-method',
                        dest='serializationMethod',
                        default='V1',
                        help="FSA serialization method: \
                        SIMPLE - fixed-length transitions, fastest and weakest compression \
                        V1 - variable-length transitions, compressed labels - strongest compression \
                        V2 - format similar to the default in Jan Daciuk's fsa package - variable-length transitions, non-compressed labels - good compression, good speed")
    #~ parser.add_option('--visualize',
                        #~ dest='visualize',
                        #~ action='store_true', 
                        #~ default=False,
                        #~ help='visualize result')
    parser.add_option('--analyzer-train-file',
                        dest='analyzerTrainFile',
                        help='A text file used for analyzer training. Should contain words from some large corpus - one word in each line. Resulting analysis automaton should be faster with proper train file.')
    parser.add_option('--generator-train-file',
                        dest='generatorTrainFile',
                        help='A text file used for generator training. Should contain words from some large corpus - one word in each line. Resulting synthesis automaton should be faster with proper train file.')
    parser.add_option('--debug',
                        dest='debug',
                        action='store_true',
                        default=False,
                        help='output some debugging info')
    #~ parser.add_option('--profile',
                        #~ dest='profile',
                        #~ action='store_true',
                        #~ default=False,
                        #~ help='show profiling graph (required pycallgraph and graphviz')
    
    opts, args = parser.parse_args()
    
    _checkOption(opts.inputFiles, parser, "Input file is missing")
    _checkOption(opts.dictDir, parser, "Output dictionary dir is missing")
    _checkCondition((opts.onlyAnalyzer, opts.onlyGenerator) != (True, True), 
                              parser, 'Cannot set both --only-analyzer and --only-generator')
    writeCpp = {opts.analyzerCpp, opts.generatorCpp} != {None}
    _checkCondition(opts.dictName or writeCpp, parser, "Dictionary name is missing")
    _checkCondition(opts.onlyGenerator or opts.analyzerCpp or not writeCpp, parser, "Analyzer .cpp output file path is missing")
    _checkCondition(opts.onlyAnalyzer or opts.generatorCpp or not writeCpp, parser, "Generator .cpp output file path is missing")
    #~ _checkCondition((opts.dictName, opts.outputCpp) != (None, None), 
                              #~ parser, 'Must set at least one of: --dict-name, --output-cpp')
    #~ _checkOption(opts.outputFile, parser, "Output file is missing")
    _checkOption(opts.tagsetFile, parser, "Tagset file is missing")
    _checkOption(opts.segmentsFile, parser, "Segmentation file is missing")
    #~ _checkOption(opts.serializationMethod, parser, "Serialization method file is missing")
    #~ _checkExactlyOneOptionSet([opts.analyzer, opts.generator], 
                              #~ parser, 'Must set exactly one FSA type: --analyzer or --generator')
    
    _checkOpen(opts.tagsetFile, 'r')
    _checkOpen(opts.segmentsFile, 'r')
    for filename in opts.inputFiles:
        _checkOpen(filename, 'r')
    if not opts.onlyGenerator:
        _checkOpen(_getDictFilename(opts, isGenerator=False), 'w')
    if not opts.onlyAnalyzer:
        _checkOpen(_getDictFilename(opts, isGenerator=True), 'w')
    
    if not opts.serializationMethod.upper() in [SerializationMethod.SIMPLE, SerializationMethod.V1]:
        print('--serialization-method must be one of ('+str([SerializationMethod.SIMPLE, SerializationMethod.V1])+')', file=sys.stderr)
        parser.print_help()
        exit(1)
    
    return opts

def _concatFiles(inputFiles):
    for inputFile in inputFiles:
        if inputFile:
            with open(inputFile, 'r') as f:
                for line in f:
                    yield line

def _readDictIdAndCopyright(inputFiles):
    dictId = None
    copyright = None
    for inputFile in inputFiles:
        if inputFile:
            with codecs.open(inputFile, 'r', 'utf8') as f:
                inCopyright = False
                for linenum, line in enumerate(f, start=1):
                    if dictId is None and line.startswith('#!DICT-ID'):
                        dictIdTag, _, dictId = line.strip().partition(' ')
                        exceptions.validate(
                            dictIdTag == '#!DICT-ID',
                            'Dictionary ID tag must be followed by a space character and dictionary ID string')
                        exceptions.validate(
                            len(line.split(' ')) > 1,
                            '%s:%d: Must provide DICT-ID' % (inputFile, linenum))
                        exceptions.validate(
                            len(line.split(' ')) == 2,
                            '%s:%d: DICT-ID must not contain spaces' % (inputFile, linenum))
                    elif copyright is None and line.startswith('#<COPYRIGHT>'):
                        exceptions.validate(
                            line.strip() == '#<COPYRIGHT>',
                            '%s:%d: Copyright start tag must be the only one in the line' % (inputFile, linenum))

                        inCopyright = True
                        copyright = ''

                    elif line.startswith('#</COPYRIGHT>'):

                        exceptions.validate(
                            inCopyright,
                            '%s:%d: Copyright end tag must be preceded by copyright start tag' % (inputFile, linenum))

                        exceptions.validate(
                            line.strip() == '#</COPYRIGHT>',
                            '%s:%d: Copyright end tag must be the only one in the line' % (inputFile, linenum))

                        inCopyright = False

                    elif inCopyright:

                        copyright += line

    if dictId is None:
        logging.warn('No dictionary ID tag found')
        dictId = ''

    if copyright is None:
        logging.warn('No copyright info found')
        copyright = ''

    return (dictId, copyright)

def _readNamesAndQualifiers(inputFiles):
    names = set([''])
    qualifiers = set([frozenset()])
    lineParser = convertinput.LineParser()
    for line in _concatFiles(inputFiles):
        line = line.strip()
        if not lineParser.ignoreLine(line):
            _, _, _, name, qualifier = lineParser.parseLine(line)
            names.add(name)
            qualifiers.add(convertinput.parseQualifiers(qualifier))
    namesMap = dict([(name, idx) for idx, name in enumerate(sorted(list(names)))])
    qualifiersMap = dict([(quals, idx) for idx, quals in enumerate(sorted(qualifiers, key=lambda q: tuple(sorted(q))))])
    exceptions.validate(
                    len(qualifiersMap) <= limits.MAX_QUALIFIERS_COMBINATIONS, 
                    'Too many qualifiers combinations. The limit is %d' % limits.MAX_QUALIFIERS_COMBINATIONS)
    
    return namesMap, qualifiersMap

def _readPolimorfInput4Analyzer(inputFiles, tagset, namesMap, qualifiersMap, encoder, segmentRulesManager):
    logging.info('reading analyzer data from %s', str(inputFiles))
    for entry in convertinput.PolimorfConverter4Analyzer(tagset, namesMap, qualifiersMap, encoder, 'utf8', segmentRulesManager).convert(_concatFiles(inputFiles)):
        yield entry

def _readPolimorfInput4Generator(inputFiles, tagset, namesMap, qualifiersMap, encoder, segmentRulesManager):
    logging.info('reading generator data from %s', str(inputFiles))
    for entry in convertinput.PolimorfConverter4Generator(tagset, namesMap, qualifiersMap, encoder, 'utf8', segmentRulesManager).convert(_concatFiles(inputFiles)):
        yield entry

def _readTrainData(trainFile):
    with codecs.open(trainFile, 'r', 'utf8') as f:
        for line in f:
            yield line.strip()

def _printStats(fsa):
    acceptingNum = 0
    sinkNum = 0
    arrayNum = 0
    for s in fsa.dfs():
        if s.isAccepting():
            acceptingNum += 1
        if s.transitionsNum == 0:
            sinkNum += 1
        if s.serializeAsArray:
            arrayNum += 1
    logging.info('states num: '+str(fsa.getStatesNum()))
    logging.info('transitions num: '+str(fsa.getTransitionsNum()))
    logging.info('accepting states num: '+str(acceptingNum))
    logging.info('sink states num: '+str(sinkNum))
    logging.info('array states num: '+str(arrayNum))

def buildAnalyzerFromPoliMorf(inputFiles, tagset, namesMap, qualifiersMap, segmentRulesManager):
    encoder = encode.MorphEncoder()
    fsa = FSA(encoder, tagset)
    for word, data in _readPolimorfInput4Analyzer(inputFiles, tagset, namesMap, qualifiersMap, encoder, segmentRulesManager):
#         print word, data
        fsa.addEntry(word, data)
        del word
        del data
    fsa.close()
    logging.info('------')
    logging.info('Analyzer FSA stats:')
    logging.info('------')
    _printStats(fsa)
    return fsa

def buildGeneratorFromPoliMorf(inputFiles, tagset, namesMap, qualifiersMap, segmentRulesManager):
    encoder = encode.Encoder4Generator()
    fsa = FSA(encoder, tagset)
    inputData = _readPolimorfInput4Generator(inputFiles, tagset, namesMap, qualifiersMap, encoder, segmentRulesManager)
    for word, data in inputData:
        fsa.addEntry(word, data)
    fsa.close()
    logging.info('------')
    logging.info('Generator FSA stats:')
    logging.info('------')
    _printStats(fsa)
    return fsa

def _doBuildDictionaryPart(opts, dictId, copyrightTxt, tagset, namesMap, qualifiersMap, isGenerator):
    
    logging.info('reading segmentation rules')
    rulesParserVersion = rulesParser.RulesParser.PARSE4ANALYZER if not isGenerator else rulesParser.RulesParser.PARSE4GENERATOR
    segmentRulesManager = rulesParser.RulesParser(tagset, namesMap, qualifiersMap, rulesParserVersion).parse(opts.segmentsFile)
    segmentationRulesData = segmentRulesManager.serialize()
    logging.info('done reading segmentation rules')
    
    logging.info('building automaton')
    buildFunction = buildAnalyzerFromPoliMorf if not isGenerator else buildGeneratorFromPoliMorf
    fsa = buildFunction(opts.inputFiles, tagset, namesMap, qualifiersMap, segmentRulesManager)
    logging.info('done building automaton')
    
    if not isGenerator and opts.analyzerTrainFile:
        logging.info('training analyzer automaton with '+opts.analyzerTrainFile+' ...')
        fsa.train(_readTrainData(opts.analyzerTrainFile))
        logging.info('done training')
    
    if isGenerator and opts.generatorTrainFile:
        logging.info('training generator automaton with '+opts.generatorTrainFile+' ...')
        fsa.train(_readTrainData(opts.analyzerTrainFile))
        logging.info('done training')
    
    serializer = Serializer.getSerializer(opts.serializationMethod, fsa, dictId, copyrightTxt, tagset, namesMap, qualifiersMap, segmentationRulesData)
    if opts.generatorCpp and isGenerator:
        serializer.serialize2CppFile(opts.generatorCpp, isGenerator=isGenerator)
    if opts.analyzerCpp and not isGenerator:
        serializer.serialize2CppFile(opts.analyzerCpp, isGenerator=isGenerator)
    
    if opts.dictDir:
        serializer.serialize2BinaryFile(_getDictFilename(opts, isGenerator=isGenerator), isGenerator=isGenerator)
    
    logging.info('total FSA size (in bytes): '+str(fsa.initialState.reverseOffset))

def main(opts):
    if opts.debug:
        logging.basicConfig(level=logging.DEBUG)
    else:
        logging.basicConfig(level=logging.INFO)
    
    logging.info('reading tagset')
    tagset = Tagset(opts.tagsetFile)
    logging.info('done reading tagset')
    
    logging.info('reading names and qualifiers')
    dictId, copyrightTxt = _readDictIdAndCopyright(opts.inputFiles)
    namesMap, qualifiersMap = _readNamesAndQualifiers(opts.inputFiles)
    logging.info('done reading names and qualifiers')
    
    if not opts.onlyGenerator:
        _doBuildDictionaryPart(opts, dictId, copyrightTxt, tagset, namesMap, qualifiersMap, isGenerator=False)

    if not opts.onlyAnalyzer:
        _doBuildDictionaryPart(opts, dictId, copyrightTxt, tagset, namesMap, qualifiersMap, isGenerator=True)

if __name__ == '__main__':
    import os
    opts = _parseOptions()
    #~ try:
    main(opts)
    #~ except Exception as ex:
        #~ print >> sys.stderr, u'Building dictionary file failed:', unicode(ex).encode('utf8'), 'type of error:', type(ex)
        #~ sys.exit(1)
    #~ finally:
        #~ pass