From efcea3a80da7c4479d5fe168435ecc9fd06bdc72 Mon Sep 17 00:00:00 2001 From: John Turner Date: Sun, 14 Sep 2025 00:16:10 -0400 Subject: Squashed 'subprojects/boost-sqlite/' content from commit 3378e35 git-subtree-dir: subprojects/boost-sqlite git-subtree-split: 3378e353705271e569cf4ba15c467b840a39798c --- src/meta_data.cpp | 83 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 83 insertions(+) create mode 100644 src/meta_data.cpp (limited to 'src/meta_data.cpp') diff --git a/src/meta_data.cpp b/src/meta_data.cpp new file mode 100644 index 0000000..c16bf27 --- /dev/null +++ b/src/meta_data.cpp @@ -0,0 +1,83 @@ +// +// Copyright (c) 2022 Klemens Morgenstern (klemens.morgenstern@gmx.net) +// +// Distributed under the Boost Software License, Version 1.0. (See accompanying +// file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) +// + + +#include + +BOOST_SQLITE_BEGIN_NAMESPACE + + + + +auto table_column_meta_data(connection& conn, + cstring_ref db_name, cstring_ref table_name, cstring_ref column_name, + system::error_code & ec, error_info &ei) -> column_meta_data +{ + const char * data_type= "", *collation = ""; + int nn, pk, ai; + + int res = sqlite3_table_column_metadata(conn.handle(), db_name.c_str(), table_name.c_str(), + column_name.c_str(), + &data_type, &collation, &nn, &pk, &ai); + + if (res != SQLITE_OK) + { + BOOST_SQLITE_ASSIGN_EC(ec, res); + ei.set_message(sqlite3_errmsg(conn.handle())); + } + + return {data_type, collation, nn != 0, pk != 0, ai != 0}; +} + + + +auto table_column_meta_data(connection& conn, + cstring_ref table_name, cstring_ref column_name, + system::error_code & ec, error_info &ei) -> column_meta_data +{ + const char * data_type= "", *collation = ""; + int nn, pk, ai; + + int res = sqlite3_table_column_metadata(conn.handle(), nullptr, table_name.c_str(), column_name.c_str(), + &data_type, &collation, &nn, &pk, &ai); + + if (res != SQLITE_OK) + { + BOOST_SQLITE_ASSIGN_EC(ec, res); + ei.set_message(sqlite3_errmsg(conn.handle())); + } + + return {data_type, collation, nn != 0, pk != 0, ai != 0}; +} + + + + +auto table_column_meta_data(connection& conn, + cstring_ref db_name, cstring_ref table_name, cstring_ref column_name) -> column_meta_data +{ + system::error_code ec; + error_info ei; + auto res = table_column_meta_data(conn, db_name, table_name, column_name, ec, ei); + if (ec) + throw_exception(system::system_error(ec, ei.message())); + return res; +} + +auto table_column_meta_data(connection& conn, + cstring_ref table_name, cstring_ref column_name) -> column_meta_data +{ + system::error_code ec; + error_info ei; + auto res = table_column_meta_data(conn, table_name, column_name, ec, ei); + if (ec) + throw_exception(system::system_error(ec, ei.message())); + return res; +} + +BOOST_SQLITE_END_NAMESPACE + -- cgit v1.2.3