wudd/source/utils/FSTUtils.cpp

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/****************************************************************************
* Copyright (C) 2016-2021 Maschell
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
****************************************************************************/
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#include "FSTUtils.h"
#include "logger.h"
#include <filesystem>
std::optional<std::shared_ptr<NodeEntry>> FSTUtils::getFSTEntryByFullPath(const std::shared_ptr<DirectoryEntry> &root, std::string &givenFullPath) {
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std::string fullPath = givenFullPath;
if (strncmp(fullPath.c_str(), "/", 1) != 0) {
fullPath = "/" + fullPath;
}
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auto pathOpt = std::optional(root);
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std::filesystem::path asPath = fullPath;
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std::string dirPath = asPath.parent_path().string();
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if (dirPath != "/") {
pathOpt = getFileEntryDir(root, dirPath);
}
if (!pathOpt.has_value()) {
return {};
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}
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for (auto &child : pathOpt.value()->getChildren()) {
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if (child->getFullPath() == fullPath) {
return child;
}
}
return {};
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}
std::optional<std::shared_ptr<DirectoryEntry>> FSTUtils::getFileEntryDir(const std::shared_ptr<DirectoryEntry> &curEntry, std::string &string) {
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// We add the "/" at the end so we don't get false results when using the "startWith" function.
if (!string.ends_with("/")) {
string += "/";
}
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for (auto &curChild : curEntry->getDirChildren()) {
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std::string compareTo = curChild->getFullPath();
if (!compareTo.ends_with("/")) {
compareTo += "/";
}
if (string.starts_with(compareTo)) {
if (string == compareTo) {
return curChild;
}
return getFileEntryDir(curChild, string);
}
}
return {};
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}
std::optional<std::shared_ptr<SectionEntry>> FSTUtils::getSectionEntryForIndex(const std::shared_ptr<FST> &pFst, uint16_t index) {
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for (const auto &entry : pFst->sectionEntries->getSections()) {
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if (entry->sectionNumber == index) {
return entry;
}
}
return {};
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}