MySQL to SQLite database dump converter

convert.py

import fileinput
import re
import sys

file_name = sys.argv[1]
new_file = sys.argv[2]

rh = open(file_name, "r")
lines = rh.readlines()
rh.close()

wh = open(new_file, "w")

table_name = ""

NAME_RE = re.compile("`(.*?)`")
INSERT_RE = re.compile("\),\(")

wh.write("PRAGMA synchronous = OFF;\n")
wh.write("PRAGMA journal_mode = MEMORY;\n")
wh.write("BEGIN TRANSACTION;\n")

creating_table = False
keys = []

for line in lines:
    if line.startswith(")") and creating_table:
        creating_table = False
        line = ");"

    if line.startswith("LOCK") or line.startswith("UNLOCK"):
        continue

    if line.startswith("CREATE TABLE"):
        creating_table = True
        table_name = re.search(NAME_RE, line).group(1)

    if "AUTO_INCREMENT" in line and creating_table:
        line = line.replace("AUTO_INCREMENT", "")

    if "KEY" in line and creating_table:
        if "CONSTRAINT" in line:
            continue

        if "PRIMARY KEY" in line:
            line = line.replace("),", ")")
        else:
            names = re.findall(NAME_RE, line)

            name, field = names

            keys.append((name, field))

            line = ""

    if line.startswith("INSERT"):
        parts = re.split(INSERT_RE, line)

        line = line.replace("\\'", "''")
        line = line.replace("\\'',", "\\',")
        line = line.replace("\\n", "\n")
        line = line.replace("\\r", "\r")
        line = line.replace("\\\"", "\"")
        line = line.replace("\\\\", "\\")
        line = line.replace("\ ", " ")

        splits = parts[1::240]

        for split in splits:
            fixed_split = ");\nINSERT INTO `%(table)s` VALUES (" % {
                "table": table_name,
            } + split

            line = line.replace(split, fixed_split)

        line = line.replace(",();\n", ";\n")

    wh.write(line)

for name, field in keys:
    wh.write('CREATE INDEX "%(table)s_%(key)s" ON "%(table)s" (`%(field)s`);\n' % {
        "table": table_name,
        "key": name,
        "field": field,
    })

wh.write("END TRANSACTION;\n")

wh.close()

license.md

The MIT License (MIT)

Copyright (c) 2014 Kevin Brown

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.