471 lines
12 KiB
JavaScript
471 lines
12 KiB
JavaScript
/*eslint no-bitwise:0 */
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import I18n from "I18n";
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const DATA_PREFIX = "data-poll-";
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const DEFAULT_POLL_NAME = "poll";
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const ALLOWED_ATTRIBUTES = [
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"close",
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"max",
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"min",
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"name",
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"order",
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"public",
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"results",
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"chartType",
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"groups",
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"status",
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"step",
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"type",
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];
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function replaceToken(tokens, target, list) {
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let pos = tokens.indexOf(target);
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let level = tokens[pos].level;
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tokens.splice(pos, 1, ...list);
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list[0].map = target.map;
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// resequence levels
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for (; pos < tokens.length; pos++) {
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let nesting = tokens[pos].nesting;
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if (nesting < 0) {
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level--;
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}
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tokens[pos].level = level;
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if (nesting > 0) {
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level++;
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}
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}
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}
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// analyzes the block to that we have poll options
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function getListItems(tokens, startToken) {
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let i = tokens.length - 1;
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let listItems = [];
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let buffer = [];
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for (; tokens[i] !== startToken; i--) {
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if (i === 0) {
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return;
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}
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let token = tokens[i];
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if (token.level === 0) {
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if (token.tag !== "ol" && token.tag !== "ul") {
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return;
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}
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}
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if (token.level === 1 && token.nesting === 1) {
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if (token.tag === "li") {
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listItems.push([token, buffer.reverse().join(" ")]);
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} else {
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return;
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}
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}
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if (token.level === 1 && token.nesting === 1 && token.tag === "li") {
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buffer = [];
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} else {
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if (token.type === "text" || token.type === "inline") {
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buffer.push(token.content);
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}
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}
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}
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return listItems.reverse();
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}
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function invalidPoll(state, tag) {
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let token = state.push("text", "", 0);
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token.content = "[/" + tag + "]";
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}
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function getTitle(tokens, startToken) {
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const startIndex = tokens.indexOf(startToken);
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if (startIndex === -1) {
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return;
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}
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const pollTokens = tokens.slice(startIndex);
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const open = pollTokens.findIndex((token) => token.type === "heading_open");
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const close = pollTokens.findIndex((token) => token.type === "heading_close");
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if (open === -1 || close === -1) {
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return;
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}
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const titleTokens = pollTokens.slice(open + 1, close);
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// Remove the heading element
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tokens.splice(startIndex + open, close - open + 1);
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return titleTokens;
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}
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const rule = {
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tag: "poll",
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before: function (state, tagInfo, raw) {
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let token = state.push("text", "", 0);
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token.content = raw;
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token.bbcode_attrs = tagInfo.attrs;
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token.bbcode_type = "poll_open";
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},
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after: function (state, openToken, raw) {
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const titleTokens = getTitle(state.tokens, openToken);
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let items = getListItems(state.tokens, openToken);
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if (!items) {
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return invalidPoll(state, raw);
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}
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const attrs = openToken.bbcode_attrs;
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// default poll attributes
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const attributes = [["class", "poll"]];
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if (!attrs["status"]) {
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attributes.push([DATA_PREFIX + "status", "open"]);
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}
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ALLOWED_ATTRIBUTES.forEach((name) => {
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if (attrs[name]) {
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attributes.push([DATA_PREFIX + name, attrs[name]]);
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}
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});
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if (!attrs.name) {
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attributes.push([DATA_PREFIX + "name", DEFAULT_POLL_NAME]);
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}
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// we might need these values later...
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let min = parseInt(attrs["min"], 10);
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let max = parseInt(attrs["max"], 10);
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let step = parseInt(attrs["step"], 10);
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// infinite loop if step < 1
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if (step < 1) {
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step = 1;
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}
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let header = [];
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let token = new state.Token("poll_open", "div", 1);
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token.block = true;
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token.attrs = attributes;
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header.push(token);
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token = new state.Token("poll_open", "div", 1);
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token.block = true;
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header.push(token);
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token = new state.Token("poll_open", "div", 1);
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token.attrs = [["class", "poll-container"]];
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header.push(token);
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if (titleTokens) {
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token = new state.Token("title_open", "div", 1);
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token.attrs = [["class", "poll-title"]];
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header.push(token);
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header.push(...titleTokens);
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token = new state.Token("title_close", "div", -1);
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header.push(token);
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}
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// generate the options when the type is "number"
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if (attrs["type"] === "number") {
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// default values
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if (isNaN(min)) {
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min = 1;
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}
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if (isNaN(max)) {
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max = state.md.options.discourse.pollMaximumOptions;
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}
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if (isNaN(step)) {
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step = 1;
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}
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if (items.length > 0) {
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return invalidPoll(state, raw);
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}
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// dynamically generate options
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token = new state.Token("bullet_list_open", "ul", 1);
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header.push(token);
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for (let o = min; o <= max; o += step) {
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token = new state.Token("list_item_open", "li", 1);
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items.push([token, String(o)]);
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header.push(token);
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token = new state.Token("text", "", 0);
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token.content = String(o);
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header.push(token);
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token = new state.Token("list_item_close", "li", -1);
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header.push(token);
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}
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token = new state.Token("bullet_item_close", "", -1);
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header.push(token);
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}
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// flag items so we add hashes
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for (let o = 0; o < items.length; o++) {
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token = items[o][0];
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let text = items[o][1];
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token.attrs = token.attrs || [];
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let md5Hash = md5(JSON.stringify([text]));
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token.attrs.push([DATA_PREFIX + "option-id", md5Hash]);
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}
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replaceToken(state.tokens, openToken, header);
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// we got to correct the level on the state
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// we just resequenced
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state.level = state.tokens[state.tokens.length - 1].level;
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state.push("poll_close", "div", -1);
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token = state.push("poll_open", "div", 1);
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token.attrs = [["class", "poll-info"]];
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state.push("paragraph_open", "p", 1);
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token = state.push("span_open", "span", 1);
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token.block = false;
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token.attrs = [["class", "info-number"]];
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token = state.push("text", "", 0);
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token.content = "0";
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state.push("span_close", "span", -1);
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token = state.push("span_open", "span", 1);
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token.block = false;
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token.attrs = [["class", "info-label"]];
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token = state.push("text", "", 0);
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token.content = I18n.t("poll.voters", { count: 0 });
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state.push("span_close", "span", -1);
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state.push("paragraph_close", "p", -1);
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state.push("poll_close", "div", -1);
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state.push("poll_close", "div", -1);
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state.push("poll_close", "div", -1);
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},
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};
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function newApiInit(helper) {
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helper.registerOptions((opts, siteSettings) => {
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opts.features.poll = !!siteSettings.poll_enabled;
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opts.pollMaximumOptions = siteSettings.poll_maximum_options;
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});
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helper.registerPlugin((md) => {
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md.block.bbcode.ruler.push("poll", rule);
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});
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}
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export function setup(helper) {
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helper.allowList([
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"div.poll",
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"div.poll-info",
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"div.poll-container",
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"div.poll-title",
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"div.poll-buttons",
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"div[data-*]",
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"span.info-number",
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"span.info-text",
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"span.info-label",
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"a.button.cast-votes",
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"a.button.toggle-results",
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"li[data-*]",
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]);
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newApiInit(helper);
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}
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/*!
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* Joseph Myer's md5() algorithm wrapped in a self-invoked function to prevent
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* global namespace pollution, modified to hash unicode characters as UTF-8.
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*
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* Copyright 1999-2010, Joseph Myers, Paul Johnston, Greg Holt, Will Bond <will@wbond.net>
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* http://www.myersdaily.org/joseph/javascript/md5-text.html
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* http://pajhome.org.uk/crypt/md5
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*
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* Released under the BSD license
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* http://www.opensource.org/licenses/bsd-license
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*/
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function md5cycle(x, k) {
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let a = x[0],
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b = x[1],
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c = x[2],
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d = x[3];
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a = ff(a, b, c, d, k[0], 7, -680876936);
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d = ff(d, a, b, c, k[1], 12, -389564586);
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c = ff(c, d, a, b, k[2], 17, 606105819);
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b = ff(b, c, d, a, k[3], 22, -1044525330);
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a = ff(a, b, c, d, k[4], 7, -176418897);
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d = ff(d, a, b, c, k[5], 12, 1200080426);
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c = ff(c, d, a, b, k[6], 17, -1473231341);
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b = ff(b, c, d, a, k[7], 22, -45705983);
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a = ff(a, b, c, d, k[8], 7, 1770035416);
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d = ff(d, a, b, c, k[9], 12, -1958414417);
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c = ff(c, d, a, b, k[10], 17, -42063);
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b = ff(b, c, d, a, k[11], 22, -1990404162);
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a = ff(a, b, c, d, k[12], 7, 1804603682);
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d = ff(d, a, b, c, k[13], 12, -40341101);
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c = ff(c, d, a, b, k[14], 17, -1502002290);
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b = ff(b, c, d, a, k[15], 22, 1236535329);
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a = gg(a, b, c, d, k[1], 5, -165796510);
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d = gg(d, a, b, c, k[6], 9, -1069501632);
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c = gg(c, d, a, b, k[11], 14, 643717713);
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b = gg(b, c, d, a, k[0], 20, -373897302);
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a = gg(a, b, c, d, k[5], 5, -701558691);
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d = gg(d, a, b, c, k[10], 9, 38016083);
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c = gg(c, d, a, b, k[15], 14, -660478335);
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b = gg(b, c, d, a, k[4], 20, -405537848);
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a = gg(a, b, c, d, k[9], 5, 568446438);
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d = gg(d, a, b, c, k[14], 9, -1019803690);
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c = gg(c, d, a, b, k[3], 14, -187363961);
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b = gg(b, c, d, a, k[8], 20, 1163531501);
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a = gg(a, b, c, d, k[13], 5, -1444681467);
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d = gg(d, a, b, c, k[2], 9, -51403784);
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c = gg(c, d, a, b, k[7], 14, 1735328473);
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b = gg(b, c, d, a, k[12], 20, -1926607734);
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a = hh(a, b, c, d, k[5], 4, -378558);
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d = hh(d, a, b, c, k[8], 11, -2022574463);
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c = hh(c, d, a, b, k[11], 16, 1839030562);
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b = hh(b, c, d, a, k[14], 23, -35309556);
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a = hh(a, b, c, d, k[1], 4, -1530992060);
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d = hh(d, a, b, c, k[4], 11, 1272893353);
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c = hh(c, d, a, b, k[7], 16, -155497632);
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b = hh(b, c, d, a, k[10], 23, -1094730640);
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a = hh(a, b, c, d, k[13], 4, 681279174);
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d = hh(d, a, b, c, k[0], 11, -358537222);
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c = hh(c, d, a, b, k[3], 16, -722521979);
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b = hh(b, c, d, a, k[6], 23, 76029189);
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a = hh(a, b, c, d, k[9], 4, -640364487);
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d = hh(d, a, b, c, k[12], 11, -421815835);
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c = hh(c, d, a, b, k[15], 16, 530742520);
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b = hh(b, c, d, a, k[2], 23, -995338651);
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a = ii(a, b, c, d, k[0], 6, -198630844);
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d = ii(d, a, b, c, k[7], 10, 1126891415);
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c = ii(c, d, a, b, k[14], 15, -1416354905);
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b = ii(b, c, d, a, k[5], 21, -57434055);
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a = ii(a, b, c, d, k[12], 6, 1700485571);
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d = ii(d, a, b, c, k[3], 10, -1894986606);
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c = ii(c, d, a, b, k[10], 15, -1051523);
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b = ii(b, c, d, a, k[1], 21, -2054922799);
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a = ii(a, b, c, d, k[8], 6, 1873313359);
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d = ii(d, a, b, c, k[15], 10, -30611744);
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c = ii(c, d, a, b, k[6], 15, -1560198380);
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b = ii(b, c, d, a, k[13], 21, 1309151649);
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a = ii(a, b, c, d, k[4], 6, -145523070);
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d = ii(d, a, b, c, k[11], 10, -1120210379);
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c = ii(c, d, a, b, k[2], 15, 718787259);
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b = ii(b, c, d, a, k[9], 21, -343485551);
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x[0] = add32(a, x[0]);
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x[1] = add32(b, x[1]);
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x[2] = add32(c, x[2]);
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x[3] = add32(d, x[3]);
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}
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function cmn(q, a, b, x, s, t) {
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a = add32(add32(a, q), add32(x, t));
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return add32((a << s) | (a >>> (32 - s)), b);
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}
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function ff(a, b, c, d, x, s, t) {
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return cmn((b & c) | (~b & d), a, b, x, s, t);
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}
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function gg(a, b, c, d, x, s, t) {
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return cmn((b & d) | (c & ~d), a, b, x, s, t);
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}
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function hh(a, b, c, d, x, s, t) {
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return cmn(b ^ c ^ d, a, b, x, s, t);
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}
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function ii(a, b, c, d, x, s, t) {
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return cmn(c ^ (b | ~d), a, b, x, s, t);
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}
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function md51(s) {
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// Converts the string to UTF-8 "bytes"
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s = unescape(encodeURI(s));
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let n = s.length,
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state = [1732584193, -271733879, -1732584194, 271733878],
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i;
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for (i = 64; i <= s.length; i += 64) {
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md5cycle(state, md5blk(s.substring(i - 64, i)));
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}
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s = s.substring(i - 64);
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let tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
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for (i = 0; i < s.length; i++) {
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tail[i >> 2] |= s.charCodeAt(i) << (i % 4 << 3);
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}
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tail[i >> 2] |= 0x80 << (i % 4 << 3);
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if (i > 55) {
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md5cycle(state, tail);
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for (i = 0; i < 16; i++) {
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tail[i] = 0;
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}
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}
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tail[14] = n * 8;
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md5cycle(state, tail);
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return state;
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}
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function md5blk(s) {
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/* I figured global was faster. */
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let md5blks = [],
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i; /* Andy King said do it this way. */
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for (i = 0; i < 64; i += 4) {
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md5blks[i >> 2] =
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s.charCodeAt(i) +
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(s.charCodeAt(i + 1) << 8) +
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(s.charCodeAt(i + 2) << 16) +
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(s.charCodeAt(i + 3) << 24);
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}
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return md5blks;
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}
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let hex_chr = "0123456789abcdef".split("");
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function rhex(n) {
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let s = "",
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j = 0;
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for (; j < 4; j++) {
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s += hex_chr[(n >> (j * 8 + 4)) & 0x0f] + hex_chr[(n >> (j * 8)) & 0x0f];
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}
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return s;
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}
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function hex(x) {
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for (let i = 0; i < x.length; i++) {
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x[i] = rhex(x[i]);
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}
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return x.join("");
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}
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function add32(a, b) {
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return (a + b) & 0xffffffff;
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}
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function md5(s) {
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return hex(md51(s));
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}
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