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https://git.rwth-aachen.de/acs/public/villas/node/
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18aa0c8862
The various changes in fpga require a rewrite of the fpga node type. To allow relative paths for the fpga config file, Config and SuperNode had to be modified so they store the path of the main config file. The syntax of the fpga node type configuration has changed - the example config in etc has been modified accordingly. Signed-off-by: Niklas Eiling <niklas.eiling@eonerc.rwth-aachen.de>
97 lines
2.4 KiB
C++
97 lines
2.4 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 <jansson.h>
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#include <unistd.h>
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#include <filesystem>
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#include <functional>
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#include <regex>
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#include <villas/log.hpp>
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#include <villas/node/config.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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std::filesystem::path configPath;
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// Check if file exists on local system.
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static bool isLocalFile(const std::string &uri) {
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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 const char **includeFuncStub(config_t *cfg, const char *include_dir,
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const char *path, const char **error);
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const char **includeFunc(config_t *cfg, const char *include_dir,
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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,
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bool resolveEnvVars = true);
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json_t *load(const std::string &u, bool resolveIncludes = true,
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bool resolveEnvVars = true);
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std::filesystem::path &getConfigPath() { return configPath; }
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};
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} // namespace node
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} // namespace villas
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