mirror of
https://git.rwth-aachen.de/acs/public/villas/node/
synced 2025-03-23 00:00:01 +01:00
0735eb0f89
And various other cleanups and harmonizations Signed-off-by: Steffen Vogel <steffen.vogel@opal-rt.com>
92 lines
2.1 KiB
C++
92 lines
2.1 KiB
C++
/* Configuration file parsing.
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*
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* Author: Steffen Vogel <post@steffenvogel.de>
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* SPDX-FileCopyrightText: 2014-2023 Institute for Automation of Complex Power Systems, RWTH Aachen University
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* SPDX-License-Identifier: Apache-2.0
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*/
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#pragma once
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#include <cstdio>
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#include <unistd.h>
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#include <jansson.h>
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#include <functional>
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#include <regex>
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#include <villas/node/config.hpp>
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#include <villas/log.hpp>
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#ifdef WITH_CONFIG
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#include <libconfig.h>
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#endif
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namespace villas {
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namespace node {
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class Config {
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protected:
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using str_walk_fcn_t = std::function<json_t *(json_t *)>;
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Logger logger;
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std::list<std::string> includeDirectories;
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// Check if file exists on local system.
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static
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bool isLocalFile(const std::string &uri)
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{
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return access(uri.c_str(), F_OK) != -1;
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}
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// Decode configuration file.
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json_t * decode(FILE *f);
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#ifdef WITH_CONFIG
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// Convert libconfig .conf file to libjansson .json file.
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json_t * libconfigDecode(FILE *f);
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static
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const char ** includeFuncStub(config_t *cfg, const char *include_dir, const char *path, const char **error);
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const char ** includeFunc(config_t *cfg, const char *include_dir, const char *path, const char **error);
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#endif // WITH_CONFIG
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// Load configuration from standard input (stdim).
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FILE * loadFromStdio();
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// Load configuration from local file.
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FILE * loadFromLocalFile(const std::string &u);
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std::list<std::string> resolveIncludes(const std::string &name);
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void resolveEnvVars(std::string &text);
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// Resolve custom include directives.
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json_t * expandIncludes(json_t *in);
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// To shell-like subsitution of environment variables in strings.
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json_t * expandEnvVars(json_t *in);
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// Run a callback function for each string in the config
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json_t * walkStrings(json_t *in, str_walk_fcn_t cb);
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// Get the include dirs
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std::list<std::string> getIncludeDirectories(FILE *f) const;
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public:
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json_t *root;
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Config();
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Config(const std::string &u);
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~Config();
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json_t * load(std::FILE *f, bool resolveIncludes = true, bool resolveEnvVars = true);
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json_t * load(const std::string &u, bool resolveIncludes = true, bool resolveEnvVars = true);
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};
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} // namespace node
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} // namespace villas
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