mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-09 00:00:00 +01:00
97 lines
2.4 KiB
C++
97 lines
2.4 KiB
C++
/* Configuration file parsing.
|
|
*
|
|
* Author: Steffen Vogel <post@steffenvogel.de>
|
|
* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
|
|
* SPDX-License-Identifier: Apache-2.0
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include <cstdio>
|
|
#include <jansson.h>
|
|
#include <unistd.h>
|
|
|
|
#include <filesystem>
|
|
#include <functional>
|
|
#include <regex>
|
|
|
|
#include <villas/log.hpp>
|
|
#include <villas/node/config.hpp>
|
|
|
|
#ifdef WITH_CONFIG
|
|
#include <libconfig.h>
|
|
#endif
|
|
|
|
namespace villas {
|
|
namespace node {
|
|
|
|
class Config {
|
|
|
|
protected:
|
|
using str_walk_fcn_t = std::function<json_t *(json_t *)>;
|
|
|
|
Logger logger;
|
|
|
|
std::list<std::string> includeDirectories;
|
|
std::string configPath;
|
|
|
|
// Check if file exists on local system.
|
|
static bool isLocalFile(const std::string &uri) {
|
|
return access(uri.c_str(), F_OK) != -1;
|
|
}
|
|
|
|
// Decode configuration file.
|
|
json_t *decode(FILE *f);
|
|
|
|
#ifdef WITH_CONFIG
|
|
// Convert libconfig .conf file to libjansson .json file.
|
|
json_t *libconfigDecode(FILE *f);
|
|
|
|
static const char **includeFuncStub(config_t *cfg, const char *include_dir,
|
|
const char *path, const char **error);
|
|
|
|
const char **includeFunc(config_t *cfg, const char *include_dir,
|
|
const char *path, const char **error);
|
|
#endif // WITH_CONFIG
|
|
|
|
// Load configuration from standard input (stdim).
|
|
FILE *loadFromStdio();
|
|
|
|
// Load configuration from local file.
|
|
FILE *loadFromLocalFile(const std::string &u);
|
|
|
|
std::list<std::string> resolveIncludes(const std::string &name);
|
|
|
|
void resolveEnvVars(std::string &text);
|
|
|
|
// Resolve custom include directives.
|
|
json_t *expandIncludes(json_t *in);
|
|
|
|
// To shell-like subsitution of environment variables in strings.
|
|
json_t *expandEnvVars(json_t *in);
|
|
|
|
// Run a callback function for each string in the config
|
|
json_t *walkStrings(json_t *in, str_walk_fcn_t cb);
|
|
|
|
// Get the include dirs
|
|
std::list<std::string> getIncludeDirectories(FILE *f) const;
|
|
|
|
public:
|
|
json_t *root;
|
|
|
|
Config();
|
|
Config(const std::string &u);
|
|
|
|
~Config();
|
|
|
|
json_t *load(std::FILE *f, bool resolveIncludes = true,
|
|
bool resolveEnvVars = true);
|
|
|
|
json_t *load(const std::string &u, bool resolveIncludes = true,
|
|
bool resolveEnvVars = true);
|
|
|
|
std::string const &getConfigPath() const { return configPath; }
|
|
};
|
|
|
|
} // namespace node
|
|
} // namespace villas
|