Refactor library folders
Add paginators per output type in b_manage
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@@ -5,25 +5,41 @@
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class Paginator {
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public:
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Paginator() = default;
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Paginator(int pageSize, int total) : pageSize(pageSize), total(total)
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Paginator(int pageSize, int total, int page = 1) : pageSize(pageSize), total(total), page(page)
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{
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numPages = pageSize > 0 ? (total + pageSize - 1) / pageSize : 0;
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computePages();
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};
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~Paginator() = default;
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int getPageSize() const { return pageSize; }
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int getTotal() const { return total; }
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std::pair<int, int> getOffset(int page) const
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int getLines() const
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{
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auto [start, end] = getOffset();
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return std::min(pageSize, end - start + 1);
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}
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int getTotal() const { return total; }
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void setTotal(int total) { this->total = total; computePages(); }
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std::pair<int, int> getOffset() const
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{
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if (page > numPages)
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throw std::out_of_range("page out of range");
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return { (page - 1) * pageSize, std::min(total - 1, page * pageSize - 1) };
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}
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int getPages() const { return numPages; }
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int getPage() const { return page; }
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bool valid(int page) const { return page > 0 && page <= numPages; }
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bool hasPrev(int page) const { return page > 1; }
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bool hasNext(int page) const { return page < getPages(); }
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bool setPage(int page) { return valid(page) ? this->page = page, true : false; }
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bool addPage() { return page < numPages ? ++page, true : false; }
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bool subPage() { return page > 1 ? --page, true : false; }
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private:
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void computePages()
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{
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numPages = pageSize > 0 ? (total + pageSize - 1) / pageSize : 0;
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if (page > numPages) {
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page = numPages;
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}
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}
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int pageSize;
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int total;
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int page;
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int numPages;
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};
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