Files
dpm-core-ng/include/internal/context.hpp
Christopher M. Punches c41adc2498 Move version compatibility to the consumer; name libdpm-core explicitly
dpm_require no longer takes a minimum version and applies no version
criterion of its own. A handle now means the module is valid, not that
it suits the caller. dpm_module_info_of is added alongside it, reporting
the name, version, description, and minimum-libdpm-core version read at
load, so a consuming module can judge a dependency's version for itself.
The one rule still enforced is the minimum-version handshake, where
libdpm-core is the host and refuses a module that demands a newer library
than the one running.

dpm_module_info_of joins the version script, so the exported surface is
now fourteen symbols under DPM_CORE_1.0.

Separately, the bare word "core" is gone from prose everywhere. It named
both the command-line tool and the library, so every use forced the
reader to guess which. Text now says "the dpm binary" or "libdpm-core".
Identifiers keep their spelling: libdpm-core, core.h, core.conf, the
"core" configuration namespace, dpm_core_version, core_min, DPM_CORE_1.0,
the dpmcore namespace, test_core, core_api.

Three user-visible strings changed with it: the load-refusal message now
reads "requires libdpm-core >= X, running libdpm-core is Y — update
libdpm-core", and the info module's description and help text name the
library. The test asserting on the refusal text was updated to match.

DESIGN.md's terminology line no longer defines "DPM Core" as the CLI,
which was the source of the ambiguity. OVERVIEW.md is restructured around
the three layers a reader meets DPM at — user, developer, filesystem —
so a code-level symbol never appears without saying whose layer it is.
MODULES.md describes the bundled info module as testing and demonstrating
full DPM system functionality rather than as a reference implementation.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-10 00:38:21 -04:00

75 lines
2.1 KiB
C++

/**
* @file context.hpp
* @brief The libdpm-core context: configuration, logging, module registry
*
* @copyright Copyright (c) 2026 SILO GROUP LLC
* @author Chris Punches <chris.punches@silogroup.org>
*
* Part of the Dark Horse Linux Package Manager (DPM)
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#pragma once
#include <dpm/core.h>
#include <map>
#include <memory>
#include <string>
#include "internal/modules.hpp"
/** @brief A libdpm-core context: configuration, logging, module registry */
struct dpm_ctx {
std::string config_dir;
std::string module_path;
std::string root;
int log_level = DPM_LOG_INFO;
bool write_to_log = false;
std::string log_file;
/* config[module][section][key] = value */
std::map<std::string,
std::map<std::string,
std::map<std::string, std::string>>> config;
/* validated modules, keyed by name; loaded at most once per ctx */
std::map<std::string, std::unique_ptr<dpm_module>> modules;
std::string last_error;
};
namespace dpmcore {
/**
* @brief Records a failure reason on the context
*
* @param ctx The libdpm-core context; NULL is a no-op
* @param msg The failure description
*/
void set_error(dpm_ctx* ctx, const std::string& msg);
/**
* @brief Loads all configuration files into the context
*
* Parses every .conf file in the context's configuration directory
* into the context's configuration store.
*
* @param ctx The libdpm-core context
*/
void load_config_dir(dpm_ctx* ctx);
} // namespace dpmcore