117 lines
3.6 KiB
C++
117 lines
3.6 KiB
C++
/*
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* Copyright 2016 - 2021 gary@drinkingtea.net
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*
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/.
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*/
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#include <ox/claw/read.hpp>
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#include "pack.hpp"
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namespace nostalgia {
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/**
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* Convert path references to inodes to save space
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* @param buff buffer holding file
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* @return error
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* stub for now
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*/
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static ox::Error pathToInode(ox::Vector<uint8_t>*) noexcept {
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return OxError(0);
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}
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// just strip header for now...
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static ox::Error toMetalClaw(ox::Vector<uint8_t> *buff) noexcept {
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oxRequire(mc, ox::stripClawHeader(ox::bit_cast<char*>(buff->data()), buff->size()));
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buff->resize(mc.size());
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ox_memcpy(buff->data(), mc.data(), mc.size());
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return OxError(0);
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}
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// claw file transformations are broken out because path to inode
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// transformations need to be done after the copy to the new FS is complete
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static ox::Error transformClaw(ox::FileSystem *dest, const ox::String &path) noexcept {
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// copy
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oxTracef("pack::transformClaw", "path: {}", path);
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oxRequire(fileList, dest->ls(path));
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for (auto i = 0u; i < fileList.size(); ++i) {
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auto &name = fileList[i];
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auto filePath = path + name;
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oxRequire(stat, dest->stat(filePath.c_str()));
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if (stat.fileType == ox::FileType_Directory) {
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const auto dir = path + name + '/';
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oxReturnError(transformClaw(dest, dir));
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} else {
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// do transforms
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if (name.endsWith(".ng") || name.endsWith(".npal")) {
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// load file
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ox::Vector<uint8_t> buff(stat.size);
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oxReturnError(dest->read(filePath.c_str(), buff.data(), buff.size()));
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// do transformations
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oxReturnError(pathToInode(&buff));
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oxReturnError(toMetalClaw(&buff));
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// write file to dest
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oxReturnError(dest->write(filePath.c_str(), buff.data(), buff.size()));
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}
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}
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}
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return OxError(0);
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}
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static ox::Error verifyFile(ox::FileSystem *fs, const ox::String &path, const ox::Vector<uint8_t> &expected) noexcept {
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ox::Vector<uint8_t> buff(expected.size());
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oxReturnError(fs->read(path.c_str(), buff.data(), buff.size()));
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return OxError(buff == expected ? 0 : 1);
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}
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struct VerificationPair {
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ox::String path;
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ox::Vector<uint8_t> buff;
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};
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static ox::Error copy(ox::FileSystem *src, ox::FileSystem *dest, const ox::String &path) noexcept {
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oxOutf("copying directory: {}\n", path);
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ox::Vector<VerificationPair> verificationPairs;
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// copy
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oxRequire(fileList, src->ls(path));
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for (auto i = 0u; i < fileList.size(); ++i) {
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auto &name = fileList[i];
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auto currentFile = path + name;
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if (currentFile == "/.nostalgia") {
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continue;
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}
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oxOutf("reading {}\n", name);
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oxRequire(stat, src->stat(currentFile.c_str()));
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if (stat.fileType == ox::FileType_Directory) {
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oxReturnError(dest->mkdir(currentFile.c_str(), true));
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oxReturnError(copy(src, dest, currentFile + '/'));
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} else {
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ox::Vector<uint8_t> buff;
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// load file
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buff.resize(stat.size);
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oxReturnError(src->read(currentFile.c_str(), buff.data(), buff.size()));
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// write file to dest
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oxOutf("writing {}\n", currentFile);
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oxReturnError(dest->write(currentFile.c_str(), buff.data(), buff.size()));
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oxReturnError(verifyFile(dest, currentFile, buff));
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verificationPairs.push_back({currentFile, buff});
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}
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}
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// verify all at once in addition to right after the files are written
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for (auto i = 0u; i < verificationPairs.size(); ++i) {
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const auto &v = verificationPairs[i];
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oxReturnError(verifyFile(dest, v.path, v.buff));
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}
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return OxError(0);
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}
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ox::Error pack(ox::FileSystem *src, ox::FileSystem *dest) noexcept {
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oxReturnError(copy(src, dest, "/"));
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oxReturnError(transformClaw(dest, "/"));
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return OxError(0);
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}
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}
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