head	1.1;
branch	1.1.1;
access;
symbols
	netbsd-11-0-RC4:1.1.1.1
	netbsd-11-0-RC3:1.1.1.1
	netbsd-11-0-RC2:1.1.1.1
	netbsd-11-0-RC1:1.1.1.1
	perseant-exfatfs-base-20250801:1.1.1.1
	netbsd-11:1.1.1.1.0.50
	netbsd-11-base:1.1.1.1
	netbsd-10-1-RELEASE:1.1.1.1
	perseant-exfatfs-base-20240630:1.1.1.1
	perseant-exfatfs:1.1.1.1.0.48
	perseant-exfatfs-base:1.1.1.1
	netbsd-8-3-RELEASE:1.1.1.1
	netbsd-9-4-RELEASE:1.1.1.1
	netbsd-10-0-RELEASE:1.1.1.1
	netbsd-10-0-RC6:1.1.1.1
	netbsd-10-0-RC5:1.1.1.1
	netbsd-10-0-RC4:1.1.1.1
	netbsd-10-0-RC3:1.1.1.1
	netbsd-10-0-RC2:1.1.1.1
	netbsd-10-0-RC1:1.1.1.1
	netbsd-10:1.1.1.1.0.46
	netbsd-10-base:1.1.1.1
	netbsd-9-3-RELEASE:1.1.1.1
	cjep_sun2x-base1:1.1.1.1
	cjep_sun2x:1.1.1.1.0.44
	cjep_sun2x-base:1.1.1.1
	cjep_staticlib_x-base1:1.1.1.1
	netbsd-9-2-RELEASE:1.1.1.1
	cjep_staticlib_x:1.1.1.1.0.42
	cjep_staticlib_x-base:1.1.1.1
	netbsd-9-1-RELEASE:1.1.1.1
	phil-wifi-20200421:1.1.1.1
	phil-wifi-20200411:1.1.1.1
	is-mlppp:1.1.1.1.0.40
	is-mlppp-base:1.1.1.1
	phil-wifi-20200406:1.1.1.1
	netbsd-8-2-RELEASE:1.1.1.1
	netbsd-9-0-RELEASE:1.1.1.1
	netbsd-9-0-RC2:1.1.1.1
	netbsd-9-0-RC1:1.1.1.1
	phil-wifi-20191119:1.1.1.1
	netbsd-9:1.1.1.1.0.38
	netbsd-9-base:1.1.1.1
	phil-wifi-20190609:1.1.1.1
	netbsd-8-1-RELEASE:1.1.1.1
	netbsd-8-1-RC1:1.1.1.1
	pgoyette-compat-merge-20190127:1.1.1.1
	pgoyette-compat-20190127:1.1.1.1
	pgoyette-compat-20190118:1.1.1.1
	pgoyette-compat-1226:1.1.1.1
	pgoyette-compat-1126:1.1.1.1
	pgoyette-compat-1020:1.1.1.1
	pgoyette-compat-0930:1.1.1.1
	pgoyette-compat-0906:1.1.1.1
	netbsd-7-2-RELEASE:1.1.1.1
	pgoyette-compat-0728:1.1.1.1
	netbsd-8-0-RELEASE:1.1.1.1
	phil-wifi:1.1.1.1.0.36
	phil-wifi-base:1.1.1.1
	pgoyette-compat-0625:1.1.1.1
	netbsd-8-0-RC2:1.1.1.1
	pgoyette-compat-0521:1.1.1.1
	pgoyette-compat-0502:1.1.1.1
	pgoyette-compat-0422:1.1.1.1
	netbsd-8-0-RC1:1.1.1.1
	pgoyette-compat-0415:1.1.1.1
	pgoyette-compat-0407:1.1.1.1
	pgoyette-compat-0330:1.1.1.1
	pgoyette-compat-0322:1.1.1.1
	pgoyette-compat-0315:1.1.1.1
	netbsd-7-1-2-RELEASE:1.1.1.1
	pgoyette-compat:1.1.1.1.0.34
	pgoyette-compat-base:1.1.1.1
	netbsd-7-1-1-RELEASE:1.1.1.1
	matt-nb8-mediatek:1.1.1.1.0.32
	matt-nb8-mediatek-base:1.1.1.1
	perseant-stdc-iso10646:1.1.1.1.0.30
	perseant-stdc-iso10646-base:1.1.1.1
	netbsd-8:1.1.1.1.0.28
	netbsd-8-base:1.1.1.1
	prg-localcount2-base3:1.1.1.1
	prg-localcount2-base2:1.1.1.1
	prg-localcount2-base1:1.1.1.1
	prg-localcount2:1.1.1.1.0.26
	prg-localcount2-base:1.1.1.1
	pgoyette-localcount-20170426:1.1.1.1
	bouyer-socketcan-base1:1.1.1.1
	pgoyette-localcount-20170320:1.1.1.1
	netbsd-7-1:1.1.1.1.0.24
	netbsd-7-1-RELEASE:1.1.1.1
	netbsd-7-1-RC2:1.1.1.1
	netbsd-7-nhusb-base-20170116:1.1.1.1
	bouyer-socketcan:1.1.1.1.0.22
	bouyer-socketcan-base:1.1.1.1
	pgoyette-localcount-20170107:1.1.1.1
	netbsd-7-1-RC1:1.1.1.1
	pgoyette-localcount-20161104:1.1.1.1
	netbsd-7-0-2-RELEASE:1.1.1.1
	localcount-20160914:1.1.1.1
	netbsd-7-nhusb:1.1.1.1.0.20
	netbsd-7-nhusb-base:1.1.1.1
	pgoyette-localcount-20160806:1.1.1.1
	pgoyette-localcount-20160726:1.1.1.1
	pgoyette-localcount:1.1.1.1.0.18
	pgoyette-localcount-base:1.1.1.1
	netbsd-7-0-1-RELEASE:1.1.1.1
	netbsd-7-0:1.1.1.1.0.16
	netbsd-7-0-RELEASE:1.1.1.1
	netbsd-7-0-RC3:1.1.1.1
	netbsd-7-0-RC2:1.1.1.1
	netbsd-7-0-RC1:1.1.1.1
	netbsd-7:1.1.1.1.0.14
	netbsd-7-base:1.1.1.1
	yamt-pagecache:1.1.1.1.0.12
	yamt-pagecache-base9:1.1.1.1
	tls-earlyentropy:1.1.1.1.0.10
	tls-earlyentropy-base:1.1.1.1
	riastradh-xf86-video-intel-2-7-1-pre-2-21-15:1.1.1.1
	riastradh-drm2-base3:1.1.1.1
	kyua-cli-0-7:1.1.1.1
	riastradh-drm2-base2:1.1.1.1
	riastradh-drm2-base1:1.1.1.1
	riastradh-drm2:1.1.1.1.0.2
	riastradh-drm2-base:1.1.1.1
	khorben-n900:1.1.1.1.0.8
	agc-symver:1.1.1.1.0.6
	agc-symver-base:1.1.1.1
	tls-maxphys-base:1.1.1.1
	tls-maxphys:1.1.1.1.0.4
	kyua-cli-0-6:1.1.1.1
	GOOGLE-CODE:1.1.1;
locks; strict;
comment	@// @;


1.1
date	2013.02.23.12.34.04;	author jmmv;	state Exp;
branches
	1.1.1.1;
next	;

1.1.1.1
date	2013.02.23.12.34.04;	author jmmv;	state Exp;
branches
	1.1.1.1.4.1
	1.1.1.1.12.1;
next	;

1.1.1.1.4.1
date	2013.02.23.12.34.04;	author tls;	state dead;
branches;
next	1.1.1.1.4.2;

1.1.1.1.4.2
date	2013.02.25.00.26.09;	author tls;	state Exp;
branches;
next	;

1.1.1.1.12.1
date	2013.02.23.12.34.04;	author yamt;	state dead;
branches;
next	1.1.1.1.12.2;
commitid	h3iiOYJJCkPr7yBx;

1.1.1.1.12.2
date	2014.05.22.15.45.27;	author yamt;	state Exp;
branches;
next	;
commitid	h3iiOYJJCkPr7yBx;


desc
@@


1.1
log
@Initial revision
@
text
@// Copyright 2011 Google Inc.
// 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/backend.hpp"
#include "utils/defs.hpp"
#include "utils/format/macros.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 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 the store database and prints "
    "the resulting table")
{
    add_option(store_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.
/// \param unused_user_config The runtime configuration of the program.
///
/// \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& UTILS_UNUSED_PARAM(user_config))
{
    try {
        store::backend backend = store::backend::open_rw(
            cli::store_path(cmdline));
        sqlite::statement stmt = backend.database().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;
    }
}
@


1.1.1.1
log
@Initial import of Kyua CLI, version 0.6:

This is the main component of Kyua and its build will be guarded by the
MKKYUA knob.  core@@ has approved this import.

Description:

Kyua (pronounced Q.A.) is a testing framework for both developers and
users.  Kyua is different from most other testing frameworks in that it
puts the end user experience before anything else.  There are multiple
reasons for users to run the tests themselves, and Kyua ensures that
they can do so in the most convenient way.

This module, kyua-cli, provides the command-line interface to the Kyua
runtime system.  The major purpose of this tool is to run test cases and
generate unified reports for their results.
@
text
@@


1.1.1.1.12.1
log
@file cmd_db_exec.cpp was added on branch yamt-pagecache on 2014-05-22 15:45:27 +0000
@
text
@d1 186
@


1.1.1.1.12.2
log
@sync with head.

for a reference, the tree before this commit was tagged
as yamt-pagecache-tag8.

this commit was splitted into small chunks to avoid
a limitation of cvs.  ("Protocol error: too many arguments")
@
text
@a0 186
// Copyright 2011 Google Inc.
// 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/backend.hpp"
#include "utils/defs.hpp"
#include "utils/format/macros.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 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 the store database and prints "
    "the resulting table")
{
    add_option(store_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.
/// \param unused_user_config The runtime configuration of the program.
///
/// \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& UTILS_UNUSED_PARAM(user_config))
{
    try {
        store::backend backend = store::backend::open_rw(
            cli::store_path(cmdline));
        sqlite::statement stmt = backend.database().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;
    }
}
@


1.1.1.1.4.1
log
@file cmd_db_exec.cpp was added on branch tls-maxphys on 2013-02-25 00:26:09 +0000
@
text
@d1 186
@


1.1.1.1.4.2
log
@resync with head
@
text
@a0 186
// Copyright 2011 Google Inc.
// 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/backend.hpp"
#include "utils/defs.hpp"
#include "utils/format/macros.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 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 the store database and prints "
    "the resulting table")
{
    add_option(store_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.
/// \param unused_user_config The runtime configuration of the program.
///
/// \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& UTILS_UNUSED_PARAM(user_config))
{
    try {
        store::backend backend = store::backend::open_rw(
            cli::store_path(cmdline));
        sqlite::statement stmt = backend.database().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;
    }
}
@


