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186 lines (158 loc) · 4.12 KB
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/**
*
* @file EnvResolver.cpp
* @author Gaspard Kirira
*
* Copyright 2025, Gaspard Kirira.
* All rights reserved.
* https://github.com/vixcpp/vix
*
* Use of this source code is governed by a MIT license
* that can be found in the License file.
*
* Vix.cpp
*/
#include <string>
#include <string_view>
#include <vector>
#include <vix/env/EnvError.hpp>
#include <vix/env/EnvResolver.hpp>
#include <vix/path/Join.hpp>
#include <vix/path/Normalize.hpp>
namespace vix::env
{
namespace
{
[[nodiscard]] vix::error::Result<std::string> normalize_joined_path(
std::string_view base_dir,
std::string_view filename,
const vix::path::PathOptions &path_options)
{
if (base_dir.empty())
{
return make_env_error(
EnvErrorCode::EmptyPath,
"base directory cannot be empty");
}
if (filename.empty())
{
return make_env_error(
EnvErrorCode::EmptyPath,
"env filename cannot be empty");
}
auto joined = vix::path::join(base_dir, filename, path_options);
if (!joined)
{
return joined.error();
}
auto normalized = vix::path::normalize(joined.value(), path_options);
if (!normalized)
{
return normalized.error();
}
return normalized.value();
}
[[nodiscard]] std::string append_suffix(std::string_view base_name,
std::string_view suffix)
{
std::string out(base_name);
out += suffix;
return out;
}
void push_candidate(std::vector<std::string> &candidates,
std::string_view filename,
const EnvFileOptions &options,
vix::error::Error &error)
{
if (error.has_error())
{
return;
}
auto resolved = normalize_joined_path(
options.base_dir,
filename,
options.path);
if (!resolved)
{
error = resolved.error();
return;
}
candidates.push_back(std::move(resolved.value()));
}
} // namespace
vix::error::Result<std::string> resolve_env_file(const EnvFileOptions &options)
{
return normalize_joined_path(
options.base_dir,
options.filename,
options.path);
}
EnvPathListResult resolve_env_files(const EnvFileOptions &options)
{
std::vector<std::string> candidates;
vix::error::Error error;
const std::string &base_name = options.filename;
const std::string &environment = options.environment_name;
if (base_name.empty())
{
return make_env_error(
EnvErrorCode::EmptyPath,
"env filename cannot be empty");
}
if (options.mode == EnvFileMode::Single)
{
auto resolved = resolve_env_file(options);
if (!resolved)
{
return resolved.error();
}
candidates.push_back(std::move(resolved.value()));
return candidates;
}
if (options.load_base_file)
{
push_candidate(candidates, base_name, options, error);
}
if (options.load_local_file)
{
push_candidate(
candidates,
append_suffix(base_name, ".local"),
options,
error);
}
if (options.load_environment_file)
{
if (environment.empty())
{
return make_env_error(
EnvErrorCode::InvalidValue,
"environment_name cannot be empty when load_environment_file is enabled");
}
push_candidate(
candidates,
append_suffix(base_name, "." + environment),
options,
error);
}
if (options.load_environment_local_file)
{
if (environment.empty())
{
return make_env_error(
EnvErrorCode::InvalidValue,
"environment_name cannot be empty when load_environment_local_file is enabled");
}
push_candidate(
candidates,
append_suffix(base_name, "." + environment + ".local"),
options,
error);
}
if (error)
{
return error;
}
return candidates;
}
} // namespace vix::env