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gfiles.cpp
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gfiles.cpp
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/**************************************************************************/
/* */
/* WWIV Version 5.x */
/* Copyright (C)1998-2022, WWIV Software Services */
/* */
/* Licensed under the Apache License, Version 2.0 (the "License"); */
/* you may not use this file except in compliance with the License. */
/* You may obtain a copy of the License at */
/* */
/* http://www.apache.org/licenses/LICENSE-2.0 */
/* */
/* Unless required by applicable law or agreed to in writing, */
/* software distributed under the License is distributed on an */
/* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, */
/* either express or implied. See the License for the specific */
/* language governing permissions and limitations under the License. */
/* */
/**************************************************************************/
#include "sdk/gfiles.h"
// ReSharper disable once CppUnusedIncludeDirective
#include <cereal/archives/json.hpp>
#include <cereal/types/memory.hpp>
// ReSharper disable once CppUnusedIncludeDirective
#include "sdk/gfiles_cereal.h"
#include "core/cereal_utils.h"
#include "core/datafile.h"
#include "core/file.h"
#include "core/jsonfile.h"
#include "core/stl.h"
#include "core/strings.h"
#include "sdk/acs/expr.h"
#include "sdk/filenames.h"
#include "sdk/vardec.h"
#include <string>
#include <utility>
#include <vector>
using cereal::make_nvp;
using namespace wwiv::core;
using namespace wwiv::stl;
using namespace wwiv::strings;
#pragma pack(push, 1)
struct gfiledirrec {
char name[41], // g-file section name
filename[9]; // g-file database filename
uint8_t sl, // sl required to read
age; // minimum age for section
uint16_t maxfiles, // max # of files
ar; // AR for g-file section
};
struct gfilerec {
char description[81], // description of file
filename[13]; // filename of file
daten_t daten; // date added
};
static_assert(sizeof(gfilerec) == 98, "gfilerec == 98");
static_assert(sizeof(gfiledirrec) == 56, "gfiledirrec == 56");
#pragma pack(pop)
namespace wwiv::sdk {
bool GFiles::LoadFromJSON(const std::filesystem::path& dir, const std::string& filename,
std::vector<gfile_dir_t>& entries) {
entries.clear();
JsonFile f(FilePath(dir, filename), "gfiles", entries, 1);
return f.Load();
}
bool GFiles::SaveToJSON(const std::filesystem::path& dir, const std::string& filename,
const std::vector<gfile_dir_t>& entries) {
const auto path = FilePath(dir, filename);
backup_file(path, max_backups_);
JsonFile f(path, "gfiles", entries, 1);
return f.Save();
}
bool GFiles::set_dirs(const std::vector<gfile_dir_t>& dirs) {
dirs_ = dirs;
return true;
}
GFiles::GFiles(std::filesystem::path datadir, int max_backups)
: datadir_(std::move(datadir)), max_backups_(max_backups){};
GFiles::~GFiles() = default;
bool GFiles::LoadLegacy() {
std::vector<gfiledirrec> gfilesec;
if (DataFile<gfiledirrec> file(FilePath(datadir_, GFILE_DAT)); file) {
file.ReadVector(gfilesec);
}
for (const auto& o : gfilesec) {
gfile_dir_t gf{};
gf.name = o.name;
gf.filename = o.filename;
gf.maxfiles = o.maxfiles;
acs::AcsExpr ae;
gf.acs = ae.min_sl(o.sl).min_age(o.age).ar_int(o.ar).get();
const auto gfl_file_name = StrCat(gf.filename, ".gfl");
const auto gfl_path = FilePath(datadir_, gfl_file_name);
if (DataFile<gfilerec> gfile(gfl_path); gfile) {
if (std::vector<gfilerec> files; gfile.ReadVector(files)) {
for (const auto& of : files) {
gfile_t f{};
f.filename = of.filename;
f.daten = of.daten;
f.description = of.description;
gf.files.emplace_back(f);
}
}
}
dirs_.emplace_back(gf);
}
return true;
}
bool GFiles::Load() {
const auto json_path = FilePath(datadir_, "gfiles.json");
const auto legacy_path = FilePath(datadir_, GFILE_DAT);
if (!File::Exists(json_path) && File::Exists(legacy_path)) {
const auto loaded = LoadLegacy();
if (loaded) {
return Save();
}
return false;
}
return LoadFromJSON(datadir_, "gfiles.json", dirs_);
}
bool GFiles::Save() { return SaveToJSON(datadir_, "gfiles.json", dirs_); }
bool GFiles::insert(int n, gfile_dir_t r) { return insert_at(dirs_, n, r); }
bool GFiles::erase(int n) { return erase_at(dirs_, n); }
const gfile_dir_t& GFiles::dir(const std::string& filename) const {
for (const auto& n : dirs_) {
if (iequals(filename, n.filename)) {
return n;
}
}
throw std::out_of_range(StrCat("Unable to find dir of filename: ", filename));
}
gfile_dir_t& GFiles::dir(const std::string& filename) {
for (auto& n : dirs_) {
if (iequals(filename, n.filename)) {
return n;
}
}
throw std::out_of_range(StrCat("Unable to find dir of filename: ", filename));
}
bool GFiles::exists(const std::string& filename) const {
for (const auto& n : dirs_) {
if (iequals(filename, n.filename)) {
return true;
}
}
return false;
}
} // namespace wwiv::sdk