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September 2, 2021 09:31
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SQLite dump to MySQL dump with python 3
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#!/usr/bin/env python3 | |
# | |
# Converte un dump sqlite in mysql | |
# | |
# Esempi: | |
# cat db.sqlite | python sqlite2mysql > db.mysql | |
# cat db.sqlite | ./sqlite2mysql > db.mysql | |
# | |
# INPUT: | |
# - Dump sqlite | |
# | |
# Output: | |
# - Dump mysql | |
## | |
import re | |
import fileinput | |
def main(): | |
for line in fileinput.input(): | |
process = False | |
for nope in ('BEGIN TRANSACTION','COMMIT', | |
'sqlite_sequence','CREATE UNIQUE INDEX'): | |
if nope in line: break | |
else: | |
process = True | |
if not process: | |
continue | |
m = re.search('CREATE TABLE "([a-z_]*)"(.*)', line) or re.search('CREATE TABLE IF NOT EXISTS "([a-z_]*)"(.*)', line) | |
if m: | |
name, sub = m.groups() | |
sub = sub.replace('"','`') | |
line = '''DROP TABLE IF EXISTS %(name)s; | |
CREATE TABLE IF NOT EXISTS %(name)s%(sub)s | |
''' | |
line = line % dict(name=name, sub=sub) | |
else: | |
m = re.search('INSERT INTO "([a-z_]*)"(.*)', line) | |
if m: | |
line = 'INSERT INTO %s%s\n' % m.groups() | |
line = line.replace('"', r'\"') | |
line = line.replace('"', "'") | |
line = re.sub(r"([^'])'t'(.)", "\\1THIS_IS_TRUE\\2", line) | |
line = line.replace('THIS_IS_TRUE', '1') | |
line = re.sub(r"([^'])'f'(.)", "\\1THIS_IS_FALSE\\2", line) | |
line = line.replace('THIS_IS_FALSE', '0') | |
line = line.replace('autoincrement', 'AUTO_INCREMENT') | |
line = line.replace('not null', 'NOT NULL') | |
line = line.replace('primary key', 'PRIMARY KEY') | |
line = line.replace('varchar ', 'TEXT ') | |
if re.search('^CREATE INDEX', line): | |
line = line.replace('"','`') | |
print(line) |
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