@twurple/common
Version:
Common functions used by the `@twurple` library family.
124 lines (123 loc) • 4.27 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.parseChatMessage = exports.fillTextPositions = exports.findCheermotePositions = exports.parseEmotePositions = void 0;
const shared_utils_1 = require("@d-fischer/shared-utils");
const ChatEmote_1 = require("./ChatEmote");
/**
* Transforms the parts of the given text that are marked as emotes.
*
* @param text The message text.
* @param emoteOffsets The emote offsets. An emote name maps to a list of text ranges.
*/
function parseEmotePositions(text, emoteOffsets) {
return [...emoteOffsets.entries()]
.flatMap(([emote, placements]) => placements.map((placement) => {
const [startStr, endStr] = placement.split('-');
const start = +startStr;
const end = +endStr;
const name = (0, shared_utils_1.utf8Substring)(text, start, end + 1);
return {
type: 'emote',
position: start,
length: end - start + 1,
id: emote,
name,
displayInfo: new ChatEmote_1.ChatEmote({
code: name,
id: emote
})
};
}))
.sort((a, b) => a.position - b.position);
}
exports.parseEmotePositions = parseEmotePositions;
/**
* Finds the positions of all cheermotes in the given message.
*
* @param text The message text.
* @param names The names of the cheermotes to find.
*/
function findCheermotePositions(text, names) {
const result = [];
const re = new RegExp('(?<=^|\\s)([a-z]+(?:\\d+[a-z]+)*)(\\d+)(?=\\s|$)', 'gi');
let match = null;
while ((match = re.exec(text))) {
const name = match[1].toLowerCase();
if (names.includes(name)) {
const amount = Number(match[2]);
result.push({
name,
amount,
position: (0, shared_utils_1.utf8Length)(text.slice(0, match.index)),
length: match[0].length
});
}
}
return result;
}
exports.findCheermotePositions = findCheermotePositions;
/**
* Add text parts to the given list of message parts for all the text that's unaccounted for.
*
* @param text The message text.
* @param otherPositions The parsed non-text parts of the message.
*/
function fillTextPositions(text, otherPositions) {
const messageLength = (0, shared_utils_1.utf8Length)(text);
if (!otherPositions.length) {
return [
{
type: 'text',
position: 0,
length: messageLength,
text: text
}
];
}
const result = [];
let currentPosition = 0;
for (const token of otherPositions) {
if (token.position > currentPosition) {
result.push({
type: 'text',
position: currentPosition,
length: token.position - currentPosition,
text: (0, shared_utils_1.utf8Substring)(text, currentPosition, token.position)
});
}
result.push(token);
currentPosition = token.position + token.length;
}
if (currentPosition < messageLength) {
result.push({
type: 'text',
position: currentPosition,
length: messageLength - currentPosition,
text: (0, shared_utils_1.utf8Substring)(text, currentPosition)
});
}
return result;
}
exports.fillTextPositions = fillTextPositions;
/**
* Parse a chat message with emotes and optionally cheermotes.
*
* @param text The message text.
* @param emoteOffsets The emote offsets. An emote name maps to a list of text ranges.
* @param cheermoteNames The names of the cheermotes to find. Will not do cheermote parsing if not given.
*/
function parseChatMessage(text, emoteOffsets, cheermoteNames) {
if (!text) {
return [];
}
const foundParts = parseEmotePositions(text, emoteOffsets);
if (cheermoteNames) {
foundParts.push(...findCheermotePositions(text, cheermoteNames).map((cm) => ({
type: 'cheer',
...cm
})));
foundParts.sort((a, b) => a.position - b.position);
}
return fillTextPositions(text, foundParts);
}
exports.parseChatMessage = parseChatMessage;