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discourse/plugins/poll/assets/javascripts/lib/discourse-markdown/poll.js.es6

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/*eslint no-bitwise:0 */
const DATA_PREFIX = "data-poll-";
const DEFAULT_POLL_NAME = "poll";
const WHITELISTED_ATTRIBUTES = ["type", "name", "min", "max", "step", "order", "status", "public"];
function getHelpText(count, min, max) {
// default values
if (isNaN(min) || min < 1) { min = 1; }
if (isNaN(max) || max > count) { max = count; }
// add some help text
let help;
if (max > 0) {
if (min === max) {
if (min > 1) {
help = I18n.t("poll.multiple.help.x_options", { count: min });
}
} else if (min > 1) {
if (max < count) {
help = I18n.t("poll.multiple.help.between_min_and_max_options", { min: min, max: max });
} else {
help = I18n.t("poll.multiple.help.at_least_min_options", { count: min });
}
} else if (max <= count) {
help = I18n.t("poll.multiple.help.up_to_max_options", { count: max });
}
}
return help;
}
function replaceToken(tokens, target, list) {
let pos = tokens.indexOf(target);
let level = tokens[pos].level;
tokens.splice(pos, 1, ...list);
list[0].map = target.map;
// resequence levels
for(;pos<tokens.length;pos++) {
let nesting = tokens[pos].nesting;
if (nesting < 0) { level--; }
tokens[pos].level = level;
if (nesting > 0) { level++; }
}
}
// analyzes the block to that we have poll options
function getListItems(tokens, startToken) {
let i = tokens.length-1;
let listItems = [];
let buffer = [];
for(;tokens[i]!==startToken;i--) {
if (i === 0) {
return;
}
let token = tokens[i];
if (token.level === 0) {
if (token.tag !== 'ol' && token.tag !== 'ul') {
return;
}
}
if (token.level === 1 && token.nesting === 1) {
if (token.tag === 'li') {
listItems.push([token, buffer.reverse().join(' ')]);
} else {
return;
}
}
if (token.level === 1 && token.nesting === 1 && token.tag === 'li') {
buffer = [];
} else {
if (token.type === 'text' || token.type === 'inline') {
buffer.push(token.content);
}
}
}
return listItems.reverse();
}
function invalidPoll(state, tag) {
let token = state.push('text', '', 0);
token.content = '[/' + tag + ']';
}
const rule = {
tag: 'poll',
before: function(state, tagInfo, raw){
let token = state.push('text', '', 0);
token.content = raw;
token.bbcode_attrs = tagInfo.attrs;
token.bbcode_type = 'poll_open';
},
after: function(state, openToken, raw) {
let items = getListItems(state.tokens, openToken);
if (!items) {
return invalidPoll(state, raw);
}
const attrs = openToken.bbcode_attrs;
// default poll attributes
const attributes = [["class", "poll"]];
if (!attrs['status']) {
attributes.push([DATA_PREFIX + "status", "open"]);
}
WHITELISTED_ATTRIBUTES.forEach(name => {
if (attrs[name]) {
attributes.push([DATA_PREFIX + name, attrs[name]]);
}
});
if (!attrs.name) {
attributes.push([DATA_PREFIX + "name", DEFAULT_POLL_NAME]);
}
// we might need these values later...
let min = parseInt(attrs["min"], 10);
let max = parseInt(attrs["max"], 10);
let step = parseInt(attrs["step"], 10);
let header = [];
let token = new state.Token('poll_open', 'div', 1);
token.block = true;
token.attrs = attributes;
header.push(token);
token = new state.Token('poll_open', 'div', 1);
token.block = true;
header.push(token);
token = new state.Token('poll_open', 'div', 1);
token.attrs = [['class', 'poll-container']];
header.push(token);
// generate the options when the type is "number"
if (attrs["type"] === "number") {
// default values
if (isNaN(min)) { min = 1; }
if (isNaN(max)) { max = state.md.options.discourse.pollMaximumOptions; }
if (isNaN(step)) { step = 1; }
if (items.length > 0) {
return invalidPoll(state, raw);
}
// dynamically generate options
token = new state.Token('bullet_list_open', 'ul', 1);
header.push(token);
for (let o = min; o <= max; o += step) {
token = new state.Token('list_item_open', 'li', 1);
items.push([token, String(o)]);
header.push(token);
token = new state.Token('text', '', 0);
token.content = String(o);
header.push(token);
token = new state.Token('list_item_close', 'li', -1);
header.push(token);
}
token = new state.Token('bullet_item_close', '', -1);
header.push(token);
}
// flag items so we add hashes
for (let o = 0; o < items.length; o++) {
token = items[o][0];
let text = items[o][1];
token.attrs = token.attrs || [];
let md5Hash = md5(JSON.stringify([text]));
token.attrs.push([DATA_PREFIX + 'option-id', md5Hash]);
}
replaceToken(state.tokens, openToken, header);
// we got to correct the level on the state
// we just resequenced
state.level = state.tokens[state.tokens.length-1].level;
state.push('poll_close', 'div', -1);
token = state.push('poll_open', 'div', 1);
token.attrs = [['class', 'poll-info']];
state.push('paragraph_open', 'p', 1);
token = state.push('span_open', 'span', 1);
token.block = false;
token.attrs = [['class', 'info-number']];
token = state.push('text', '', 0);
token.content = '0';
state.push('span_close', 'span', -1);
token = state.push('span_open', 'span', 1);
token.block = false;
token.attrs = [['class', 'info-text']];
token = state.push('text', '', 0);
token.content = I18n.t("poll.voters", { count: 0 });
state.push('span_close', 'span', -1);
state.push('paragraph_close', 'p', -1);
// multiple help text
if (attributes[DATA_PREFIX + "type"] === "multiple") {
let help = getHelpText(items.length, min, max);
if (help) {
state.push('paragraph_open', 'p', 1);
token = state.push('html_inline', '', 0);
token.content = help;
state.push('paragraph_close', 'p', -1);
}
}
if (attributes[DATA_PREFIX + 'public'] === 'true') {
state.push('paragraph_open', 'p', 1);
token = state.push('text', '', 0);
token.content = I18n.t('poll.public.title');
state.push('paragraph_close', 'p', -1);
}
state.push('poll_close', 'div', -1);
state.push('poll_close', 'div', -1);
token = state.push('poll_open', 'div', 1);
token.attrs = [['class', 'poll-buttons']];
if (attributes[DATA_PREFIX + 'type'] === 'multiple') {
token = state.push('link_open', 'a', 1);
token.block = false;
token.attrs = [
['class', 'button cast-votes'],
['title', I18n.t('poll.cast-votes.title')]
];
token = state.push('text', '', 0);
token.content = I18n.t('poll.cast-votes.label');
state.push('link_close', 'a', -1);
}
token = state.push('link_open', 'a', 1);
token.block = false;
token.attrs = [
['class', 'button toggle-results'],
['title', I18n.t('poll.show-results.title')]
];
token = state.push('text', '', 0);
token.content = I18n.t("poll.show-results.label");
state.push('link_close', 'a', -1);
state.push('poll_close', 'div', -1);
state.push('poll_close', 'div', -1);
}
};
function newApiInit(helper) {
helper.registerOptions((opts, siteSettings) => {
const currentUser = (opts.getCurrentUser && opts.getCurrentUser(opts.userId)) || opts.currentUser;
const staff = currentUser && currentUser.staff;
opts.features.poll = !!siteSettings.poll_enabled || staff;
opts.pollMaximumOptions = siteSettings.poll_maximum_options;
});
helper.registerPlugin(md => {
md.block.bbcode.ruler.push('poll', rule);
});
}
export function setup(helper) {
helper.whiteList([
'div.poll',
'div.poll-info',
'div.poll-container',
'div.poll-buttons',
'div[data-*]',
'span.info-number',
'span.info-text',
'a.button.cast-votes',
'a.button.toggle-results',
'li[data-*]'
]);
newApiInit(helper);
}
/*!
* Joseph Myer's md5() algorithm wrapped in a self-invoked function to prevent
* global namespace polution, modified to hash unicode characters as UTF-8.
*
* Copyright 1999-2010, Joseph Myers, Paul Johnston, Greg Holt, Will Bond <will@wbond.net>
* http://www.myersdaily.org/joseph/javascript/md5-text.html
* http://pajhome.org.uk/crypt/md5
*
* Released under the BSD license
* http://www.opensource.org/licenses/bsd-license
*/
function md5cycle(x, k) {
var a = x[0], b = x[1], c = x[2], d = x[3];
a = ff(a, b, c, d, k[0], 7, -680876936);
d = ff(d, a, b, c, k[1], 12, -389564586);
c = ff(c, d, a, b, k[2], 17, 606105819);
b = ff(b, c, d, a, k[3], 22, -1044525330);
a = ff(a, b, c, d, k[4], 7, -176418897);
d = ff(d, a, b, c, k[5], 12, 1200080426);
c = ff(c, d, a, b, k[6], 17, -1473231341);
b = ff(b, c, d, a, k[7], 22, -45705983);
a = ff(a, b, c, d, k[8], 7, 1770035416);
d = ff(d, a, b, c, k[9], 12, -1958414417);
c = ff(c, d, a, b, k[10], 17, -42063);
b = ff(b, c, d, a, k[11], 22, -1990404162);
a = ff(a, b, c, d, k[12], 7, 1804603682);
d = ff(d, a, b, c, k[13], 12, -40341101);
c = ff(c, d, a, b, k[14], 17, -1502002290);
b = ff(b, c, d, a, k[15], 22, 1236535329);
a = gg(a, b, c, d, k[1], 5, -165796510);
d = gg(d, a, b, c, k[6], 9, -1069501632);
c = gg(c, d, a, b, k[11], 14, 643717713);
b = gg(b, c, d, a, k[0], 20, -373897302);
a = gg(a, b, c, d, k[5], 5, -701558691);
d = gg(d, a, b, c, k[10], 9, 38016083);
c = gg(c, d, a, b, k[15], 14, -660478335);
b = gg(b, c, d, a, k[4], 20, -405537848);
a = gg(a, b, c, d, k[9], 5, 568446438);
d = gg(d, a, b, c, k[14], 9, -1019803690);
c = gg(c, d, a, b, k[3], 14, -187363961);
b = gg(b, c, d, a, k[8], 20, 1163531501);
a = gg(a, b, c, d, k[13], 5, -1444681467);
d = gg(d, a, b, c, k[2], 9, -51403784);
c = gg(c, d, a, b, k[7], 14, 1735328473);
b = gg(b, c, d, a, k[12], 20, -1926607734);
a = hh(a, b, c, d, k[5], 4, -378558);
d = hh(d, a, b, c, k[8], 11, -2022574463);
c = hh(c, d, a, b, k[11], 16, 1839030562);
b = hh(b, c, d, a, k[14], 23, -35309556);
a = hh(a, b, c, d, k[1], 4, -1530992060);
d = hh(d, a, b, c, k[4], 11, 1272893353);
c = hh(c, d, a, b, k[7], 16, -155497632);
b = hh(b, c, d, a, k[10], 23, -1094730640);
a = hh(a, b, c, d, k[13], 4, 681279174);
d = hh(d, a, b, c, k[0], 11, -358537222);
c = hh(c, d, a, b, k[3], 16, -722521979);
b = hh(b, c, d, a, k[6], 23, 76029189);
a = hh(a, b, c, d, k[9], 4, -640364487);
d = hh(d, a, b, c, k[12], 11, -421815835);
c = hh(c, d, a, b, k[15], 16, 530742520);
b = hh(b, c, d, a, k[2], 23, -995338651);
a = ii(a, b, c, d, k[0], 6, -198630844);
d = ii(d, a, b, c, k[7], 10, 1126891415);
c = ii(c, d, a, b, k[14], 15, -1416354905);
b = ii(b, c, d, a, k[5], 21, -57434055);
a = ii(a, b, c, d, k[12], 6, 1700485571);
d = ii(d, a, b, c, k[3], 10, -1894986606);
c = ii(c, d, a, b, k[10], 15, -1051523);
b = ii(b, c, d, a, k[1], 21, -2054922799);
a = ii(a, b, c, d, k[8], 6, 1873313359);
d = ii(d, a, b, c, k[15], 10, -30611744);
c = ii(c, d, a, b, k[6], 15, -1560198380);
b = ii(b, c, d, a, k[13], 21, 1309151649);
a = ii(a, b, c, d, k[4], 6, -145523070);
d = ii(d, a, b, c, k[11], 10, -1120210379);
c = ii(c, d, a, b, k[2], 15, 718787259);
b = ii(b, c, d, a, k[9], 21, -343485551);
x[0] = add32(a, x[0]);
x[1] = add32(b, x[1]);
x[2] = add32(c, x[2]);
x[3] = add32(d, x[3]);
}
function cmn(q, a, b, x, s, t) {
a = add32(add32(a, q), add32(x, t));
return add32((a << s) | (a >>> (32 - s)), b);
}
function ff(a, b, c, d, x, s, t) {
return cmn((b & c) | ((~b) & d), a, b, x, s, t);
}
function gg(a, b, c, d, x, s, t) {
return cmn((b & d) | (c & (~d)), a, b, x, s, t);
}
function hh(a, b, c, d, x, s, t) {
return cmn(b ^ c ^ d, a, b, x, s, t);
}
function ii(a, b, c, d, x, s, t) {
return cmn(c ^ (b | (~d)), a, b, x, s, t);
}
function md51(s) {
// Converts the string to UTF-8 "bytes" when necessary
if (/[\x80-\xFF]/.test(s)) {
s = unescape(encodeURI(s));
}
var n = s.length, state = [1732584193, -271733879, -1732584194, 271733878], i;
for (i = 64; i <= s.length; i += 64) {
md5cycle(state, md5blk(s.substring(i - 64, i)));
}
s = s.substring(i - 64);
var tail = [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0];
for (i = 0; i < s.length; i++)
tail[i >> 2] |= s.charCodeAt(i) << ((i % 4) << 3);
tail[i >> 2] |= 0x80 << ((i % 4) << 3);
if (i > 55) {
md5cycle(state, tail);
for (i = 0; i < 16; i++) tail[i] = 0;
}
tail[14] = n * 8;
md5cycle(state, tail);
return state;
}
function md5blk(s) { /* I figured global was faster. */
var md5blks = [], i; /* Andy King said do it this way. */
for (i = 0; i < 64; i += 4) {
md5blks[i >> 2] = s.charCodeAt(i) +
(s.charCodeAt(i + 1) << 8) +
(s.charCodeAt(i + 2) << 16) +
(s.charCodeAt(i + 3) << 24);
}
return md5blks;
}
var hex_chr = '0123456789abcdef'.split('');
function rhex(n) {
var s = '', j = 0;
for (; j < 4; j++)
s += hex_chr[(n >> (j * 8 + 4)) & 0x0F] +
hex_chr[(n >> (j * 8)) & 0x0F];
return s;
}
function hex(x) {
for (var i = 0; i < x.length; i++)
x[i] = rhex(x[i]);
return x.join('');
}
function add32(a, b) {
return (a + b) & 0xFFFFFFFF;
}
function md5(s) {
return hex(md51(s));
}
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