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// Copyright 2011 The Kyua Authors.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
// * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
// * Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimer in the
// documentation and/or other materials provided with the distribution.
// * Neither the name of Google Inc. nor the names of its contributors
// may be used to endorse or promote products derived from this software
// without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "cli/cmd_db_exec.hpp"
#include <algorithm>
#include <cstdlib>
#include <iterator>
#include <sstream>
#include <string>
#include "cli/common.ipp"
#include "store/exceptions.hpp"
#include "store/layout.hpp"
#include "store/read_backend.hpp"
#include "utils/cmdline/options.hpp"
#include "utils/cmdline/parser.ipp"
#include "utils/cmdline/ui.hpp"
#include "utils/defs.hpp"
#include "utils/format/macros.hpp"
#include "utils/fs/path.hpp"
#include "utils/sanity.hpp"
#include "utils/sqlite/database.hpp"
#include "utils/sqlite/exceptions.hpp"
#include "utils/sqlite/statement.hpp"
namespace cmdline = utils::cmdline;
namespace config = utils::config;
namespace fs = utils::fs;
namespace layout = store::layout;
namespace sqlite = utils::sqlite;
using cli::cmd_db_exec;
namespace {
/// Concatenates a vector into a string using ' ' as a separator.
///
/// \param args The objects to join. This cannot be empty.
///
/// \return The concatenation of all the objects in the set.
static std::string
flatten_args(const cmdline::args_vector& args)
{
std::ostringstream output;
std::copy(args.begin(), args.end(),
std::ostream_iterator< std::string >(output, " "));
std::string result = output.str();
result.erase(result.end() - 1);
return result;
}
} // anonymous namespace
/// Formats a particular cell of a statement result.
///
/// \param stmt The statement whose cell to format.
/// \param index The index of the cell to format.
///
/// \return A textual representation of the cell.
std::string
cli::format_cell(sqlite::statement& stmt, const int index)
{
switch (stmt.column_type(index)) {
case sqlite::type_blob: {
const sqlite::blob blob = stmt.column_blob(index);
return F("BLOB of %s bytes") % blob.size;
}
case sqlite::type_float:
return F("%s") % stmt.column_double(index);
case sqlite::type_integer:
return F("%s") % stmt.column_int64(index);
case sqlite::type_null:
return "NULL";
case sqlite::type_text:
return stmt.column_text(index);
}
UNREACHABLE;
}
/// Formats the column names of a statement for output as CSV.
///
/// \param stmt The statement whose columns to format.
///
/// \return A comma-separated list of column names.
std::string
cli::format_headers(sqlite::statement& stmt)
{
std::string output;
int i = 0;
for (; i < stmt.column_count() - 1; ++i)
output += stmt.column_name(i) + ',';
output += stmt.column_name(i);
return output;
}
/// Formats a row of a statement for output as CSV.
///
/// \param stmt The statement whose current row to format.
///
/// \return A comma-separated list of values.
std::string
cli::format_row(sqlite::statement& stmt)
{
std::string output;
int i = 0;
for (; i < stmt.column_count() - 1; ++i)
output += cli::format_cell(stmt, i) + ',';
output += cli::format_cell(stmt, i);
return output;
}
/// Default constructor for cmd_db_exec.
cmd_db_exec::cmd_db_exec(void) : cli_command(
"db-exec", "sql_statement", 1, -1,
"Executes an arbitrary SQL statement in a results file and prints "
"the resulting table")
{
add_option(results_file_open_option);
add_option(cmdline::bool_option("no-headers", "Do not show headers in the "
"output table"));
}
/// Entry point for the "db-exec" subcommand.
///
/// \param ui Object to interact with the I/O of the program.
/// \param cmdline Representation of the command line to the subcommand.
///
/// \return 0 if everything is OK, 1 if the statement is invalid or if there is
/// any other problem.
int
cmd_db_exec::run(cmdline::ui* ui, const cmdline::parsed_cmdline& cmdline,
const config::tree& /* user_config */)
{
try {
const fs::path results_file = layout::find_results(
results_file_open(cmdline));
// TODO(jmmv): Shouldn't be using store::detail here...
sqlite::database db = store::detail::open_and_setup(
results_file, sqlite::open_readwrite);
sqlite::statement stmt = db.create_statement(
flatten_args(cmdline.arguments()));
if (stmt.step()) {
if (!cmdline.has_option("no-headers"))
ui->out(cli::format_headers(stmt));
do
ui->out(cli::format_row(stmt));
while (stmt.step());
}
return EXIT_SUCCESS;
} catch (const sqlite::error& e) {
cmdline::print_error(ui, F("SQLite error: %s.") % e.what());
return EXIT_FAILURE;
} catch (const store::error& e) {
cmdline::print_error(ui, F("%s.") % e.what());
return EXIT_FAILURE;
}
}
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