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#!/usr/bin/python3
import os
import os.path
import sqlite3
from argparse import ArgumentParser
import utils
from myconfig import MyConfig
from dirwalk import walkIndex
CREATE_NGRAM_DDL = '''
CREATE TABLE ngram (
words TEXT NOT NULL,
freq INTEGER NOT NULL
);
'''
CREATE_NGRAM_INDEX_DDL = '''
CREATE UNIQUE INDEX ngram_index on ngram(words);
'''
config = MyConfig()
#maximum combine number
N = config.getMaximumCombineNumber()
#change cwd to the word recognizer directory
words_dir = config.getWordRecognizerDir()
os.path.exists(words_dir) or os.makedirs(words_dir)
os.chdir(words_dir)
#chdir done
def createSqliteDatabases(onedir):
print(onedir)
#create databases
for i in range(1, N + 1):
filename = config.getNgramFileName(i)
filepath = onedir + os.sep + filename
print(filepath)
#create database
if os.access(filepath, os.F_OK):
os.unlink(filepath)
conn = sqlite3.connect(filepath)
cur = conn.cursor()
cur.execute(CREATE_NGRAM_DDL)
cur.execute(CREATE_NGRAM_INDEX_DDL)
conn.commit()
if conn:
conn.close()
def handleOneIndex(indexpath, subdir, indexname):
print(indexpath, subdir, indexname)
indexstatuspath = indexpath + config.getStatusPostfix()
indexstatus = utils.load_status(indexstatuspath)
if not utils.check_epoch(indexstatus, 'Segment'):
raise utils.EpochError('Please segment first.\n')
if utils.check_epoch(indexstatus, 'Prepare'):
return
#create directory
onedir = config.getWordRecognizerDir() + os.sep + \
subdir + os.sep + indexname
os.path.exists(onedir) or os.makedirs(onedir)
#create sqlite databases
createSqliteDatabases(onedir)
#sign epoch
utils.sign_epoch(indexstatus, 'Prepare')
utils.store_status(indexstatuspath, indexstatus)
if __name__ == '__main__':
parser = ArgumentParser(description='Prepare word recognizer.')
parser.add_argument('--indexdir', action='store', \
help='index directory', \
default=config.getTextIndexDir())
args = parser.parse_args()
print(args)
walkIndex(handleOneIndex, args.indexdir)
print('done')
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