minix/external/bsd/kyua-cli/dist/engine/config.cpp
Lionel Sambuc 11be35a165 Importing NetBSD "Kyua" test framework
To do so, a few dependencies have been imported:

 * external/bsd/lutok
 * external/mit/lua
 * external/public-domain/sqlite
 * external/public-domain/xz

The Kyua framework is the new generation of ATF (Automated Test
Framework), it is composed of:

 * external/bsd/atf
 * external/bsd/kyua-atf-compat
 * external/bsd/kyua-cli
 * external/bsd/kyua-tester
 * tests

Kyua/ATF being written in C++, it depends on libstdc++ which is
provided by GCC. As this is not part of the sources, Kyua is only
compiled when the native GCC utils are installed.

To install Kyua do the following:

 * In a cross-build enviromnent, add the following to the build.sh
   commandline: -V MKBINUTILS=yes -V MKGCCCMDS=yes

WARNING:
  At this point the import is still experimental, and not supported
  on native builds (a.k.a make build).

Change-Id: I26aee23c5bbd2d64adcb7c1beb98fe0d479d7ada
2013-07-23 20:43:41 +02:00

235 lines
7.1 KiB
C++

// Copyright 2010 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,
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// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#include "engine/config.hpp"
#if defined(HAVE_CONFIG_H)
# include "config.h"
#endif
#include <stdexcept>
#include "engine/exceptions.hpp"
#include "utils/config/exceptions.hpp"
#include "utils/config/parser.hpp"
#include "utils/config/tree.ipp"
#include "utils/passwd.hpp"
#include "utils/text/exceptions.hpp"
#include "utils/text/operations.ipp"
namespace config = utils::config;
namespace fs = utils::fs;
namespace passwd = utils::passwd;
namespace text = utils::text;
namespace {
/// Defines the schema of a configuration tree.
///
/// \param [in,out] tree The tree to populate. The tree should be empty on
/// entry to prevent collisions with the keys defined in here.
static void
init_tree(config::tree& tree)
{
tree.define< config::string_node >("architecture");
tree.define< config::string_node >("platform");
tree.define< engine::user_node >("unprivileged_user");
tree.define_dynamic("test_suites");
}
/// Fills in a configuration tree with default values.
///
/// \param [in,out] tree The tree to populate. init_tree() must have been
/// called on it beforehand.
static void
set_defaults(config::tree& tree)
{
tree.set< config::string_node >("architecture", KYUA_ARCHITECTURE);
tree.set< config::string_node >("platform", KYUA_PLATFORM);
}
/// Configuration parser specialization for Kyua configuration files.
class config_parser : public config::parser {
/// Initializes the configuration tree.
///
/// This is a callback executed when the configuration script invokes the
/// syntax() method. We populate the configuration tree from here with the
/// schema version requested by the file.
///
/// \param [in,out] tree The tree to populate.
/// \param syntax_version The version of the file format as specified in the
/// configuration file.
///
/// \throw config::syntax_error If the syntax_format/syntax_version
/// combination is not supported.
void
setup(config::tree& tree, const int syntax_version)
{
if (syntax_version < 1 || syntax_version > 2)
throw config::syntax_error(F("Unsupported config version %s") %
syntax_version);
init_tree(tree);
set_defaults(tree);
}
public:
/// Initializes the parser.
///
/// \param [out] tree_ The tree in which the results of the parsing will be
/// stored when parse() is called. Should be empty on entry. Because
/// we grab a reference to this object, the tree must remain valid for
/// the existence of the parser object.
explicit config_parser(config::tree& tree_) :
config::parser(tree_)
{
}
};
} // anonymous namespace
/// Copies the node.
///
/// \return A dynamically-allocated node.
config::detail::base_node*
engine::user_node::deep_copy(void) const
{
std::auto_ptr< user_node > new_node(new user_node());
new_node->_value = _value;
return new_node.release();
}
/// Pushes the node's value onto the Lua stack.
///
/// \param state The Lua state onto which to push the value.
void
engine::user_node::push_lua(lutok::state& state) const
{
state.push_string(value().name);
}
/// Sets the value of the node from an entry in the Lua stack.
///
/// \param state The Lua state from which to get the value.
/// \param value_index The stack index in which the value resides.
///
/// \throw value_error If the value in state(value_index) cannot be
/// processed by this node.
void
engine::user_node::set_lua(lutok::state& state, const int value_index)
{
if (state.is_number(value_index)) {
config::typed_leaf_node< passwd::user >::set(
passwd::find_user_by_uid(state.to_integer(-1)));
} else if (state.is_string(value_index)) {
config::typed_leaf_node< passwd::user >::set(
passwd::find_user_by_name(state.to_string(-1)));
} else
throw config::value_error("Invalid user identifier");
}
void
engine::user_node::set_string(const std::string& raw_value)
{
try {
config::typed_leaf_node< passwd::user >::set(
passwd::find_user_by_name(raw_value));
} catch (const std::runtime_error& e) {
int uid;
try {
uid = text::to_type< int >(raw_value);
} catch (const text::value_error& e2) {
throw error(F("Cannot find user with name '%s'") % raw_value);
}
try {
config::typed_leaf_node< passwd::user >::set(
passwd::find_user_by_uid(uid));
} catch (const std::runtime_error& e2) {
throw error(F("Cannot find user with UID %s") % uid);
}
}
}
std::string
engine::user_node::to_string(void) const
{
return config::typed_leaf_node< passwd::user >::value().name;
}
/// Constructs a config with the built-in settings.
config::tree
engine::default_config(void)
{
config::tree tree;
init_tree(tree);
set_defaults(tree);
return tree;
}
/// Constructs a config with the built-in settings.
config::tree
engine::empty_config(void)
{
config::tree tree;
init_tree(tree);
return tree;
}
/// Parses a test suite configuration file.
///
/// \param file The file to parse.
///
/// \return High-level representation of the configuration file.
///
/// \throw load_error If there is any problem loading the file. This includes
/// file access errors and syntax errors.
config::tree
engine::load_config(const utils::fs::path& file)
{
config::tree tree;
try {
config_parser(tree).parse(file);
} catch (const config::error& e) {
throw load_error(file, e.what());
}
return tree;
}