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93 lines
2.9 KiB
93 lines
2.9 KiB
using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using FLocal.Core.DB;
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using System.Xml.Linq;
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using FLocal.Core;
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namespace FLocal.IISHandler {
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class PageOuter : Diapasone {
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public readonly long perPage;
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private PageOuter(long start, long count, long perPage)
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: base(start, count) {
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this.perPage = perPage;
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}
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private PageOuter(long perPage)
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: base(0, -1) {
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this.perPage = perPage;
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}
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public static PageOuter create(long perPage, long total) {
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PageOuter result = new PageOuter(0, perPage, perPage);
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result.total = total;
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return result;
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}
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public static PageOuter createFromGet(string[] requestParts, long perPage, Dictionary<char, Func<long>> customAction, int offset) {
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if(requestParts.Length > offset) {
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if(requestParts[offset].ToLower() == "all") {
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return new PageOuter(perPage);
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} else if(Char.IsDigit(requestParts[offset][0])) {
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return new PageOuter(long.Parse(requestParts[offset]), perPage, perPage);
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} else {
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return new PageOuter(customAction[requestParts[offset][0]](), perPage, perPage);
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}
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} else {
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return new PageOuter(0, perPage, perPage);
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}
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}
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/*public static PageOuter createFromGet(string[] requestParts, long perPage, Dictionary<char, Func<long>> customAction) {
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return createFromGet(requestParts, perPage, customAction, 2);
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}*/
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public static PageOuter createFromGet(string[] requestParts, long perPage, int offset) {
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return createFromGet(requestParts, perPage, new Dictionary<char, Func<long>>(), offset);
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}
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/*public static PageOuter createFromGet(string[] requestParts, long perPage) {
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return createFromGet(requestParts, perPage, new Dictionary<char,Func<long>>());
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}*/
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public XElement exportToXml(int left, int current, int right) {
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XElement result = new XElement("pageOuter",
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new XElement("unlimited", (this.count < 1).ToPlainString()),
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new XElement("start", this.start),
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new XElement("count", this.count),
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new XElement("total", this.total),
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new XElement("perPage", this.perPage)
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);
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if(this.count > 0) {
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if(this.start + this.count < this.total) {
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result.Add(new XElement("next", this.start + this.count));
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}
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}
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HashSet<long> pages = new HashSet<long>();
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for(long i=0; i<left; i++) {
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pages.Add(i*this.perPage);
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}
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{
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long totalFloor = this.total - (this.total % this.perPage);
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for(long i=0; i<left; i++) {
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pages.Add(totalFloor - i*this.perPage);
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}
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}
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{
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long startFloor = this.start - (this.start % this.perPage);
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for(long i=current; i>-current; i--) {
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pages.Add(startFloor + i*this.perPage);
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}
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}
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pages.Add(this.start);
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result.Add(new XElement("pages",
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from page in pages where (page >= 0) && (page <= this.total) orderby page select new XElement("page", page)
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));
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return result;
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}
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}
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}
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