我正在尝试使用SQLite3库打开Messages db(〜/ Library / Messages / chat.db):
int rc = sqlite3_open_v2("/Users/username/Library/Messages/chat.db", &m_db, SQLITE_OPEN_READONLY, NULL);
if (rc != SQLITE_OK) {
fprintf(stderr, "Cannot open database [%d]: %s\n",
sqlite3_extended_errcode(m_db),
sqlite3_errmsg(m_db));
sqlite3_close(m_db);
} else {
qDebug() << "Database: connection ok";
}
返回
Cannot open database [14]: unable to open database file
根据https://www.sqlite.org/rescode.html#cantopen,其中14是SQLITE_CANTOPEN
复制chat.db文件后,可以使用上面的代码正确打开。
同时,使用内置的cli,我可以从终端访问原始路径的db:
> sqlite3 ~/Library/Messages/chat.db
SQLite version 3.22.0 2018-01-22 18:45:57
Enter ".help" for usage hints.
sqlite> .tables
_SqliteDatabaseProperties kvtable
attachment message
chat message_attachment_join
chat_handle_join message_processing_task
chat_message_join sync_deleted_attachments
deleted_messages sync_deleted_chats
handle sync_deleted_messages
如何以编程方式打开数据库?