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Add irc.forEachChannelModeUpdate helper

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This commit is contained in:
Simon Ser 2021-06-11 12:54:42 +02:00
parent 37cff435a3
commit 0b3f5ef88b
2 changed files with 49 additions and 38 deletions
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47
lib/irc.js
View file

@ -571,3 +571,50 @@ export function getMessageLabel(msg) {
return null;
}
export function forEachChannelModeUpdate(msg, isupport, callback) {
let chanmodes = isupport.get("CHANMODES") || STD_CHANMODES;
let prefix = isupport.get("PREFIX") || "";
let typeByMode = new Map();
let [a, b, c, d] = chanmodes.split(",");
Array.from(a).forEach((mode) => typeByMode.set(mode, "A"));
Array.from(b).forEach((mode) => typeByMode.set(mode, "B"));
Array.from(c).forEach((mode) => typeByMode.set(mode, "C"));
Array.from(d).forEach((mode) => typeByMode.set(mode, "D"));
parseMembershipModes(prefix).forEach((membership) => typeByMode.set(membership.mode, "B"));
if (msg.command !== "MODE") {
throw new Error("Expected a MODE message");
}
let change = msg.params[1];
let args = msg.params.slice(2);
let plusMinus = null;
let j = 0;
for (let i = 0; i < change.length; i++) {
if (change[i] === "+" || change[i] === "-") {
plusMinus = change[i];
continue;
}
if (!plusMinus) {
throw new Error("malformed mode string: missing plus/minus");
}
let mode = change[i];
let add = plusMinus === "+";
let modeType = typeByMode.get(mode);
if (!modeType) {
continue;
}
let arg = null;
if (modeType === "A" || modeType === "B" || (modeType === "C" && add)) {
arg = args[j];
j++;
}
callback(mode, add, arg);
}
}

40
state.js
View file

@ -413,63 +413,27 @@ export const State = {
return updateBuffer(channel, { topic });
case "MODE":
target = msg.params[0];
let change = msg.params[1];
let args = msg.params.slice(2);
if (!client.isChannel(target)) {
return; // TODO: handle user mode changes too
}
let chanmodes = client.isupport.get("CHANMODES") || irc.STD_CHANMODES;
let prefix = client.isupport.get("PREFIX") || "";
let prefixByMode = new Map(irc.parseMembershipModes(prefix).map((membership) => {
return [membership.mode, membership.prefix];
}));
let typeByMode = new Map();
let [a, b, c, d] = chanmodes.split(",");
Array.from(a).forEach((mode) => typeByMode.set(mode, "A"));
Array.from(b).forEach((mode) => typeByMode.set(mode, "B"));
Array.from(c).forEach((mode) => typeByMode.set(mode, "C"));
Array.from(d).forEach((mode) => typeByMode.set(mode, "D"));
prefixByMode.forEach((prefix, mode) => typeByMode.set(mode, "B"));
return updateBuffer(target, (buf) => {
let members = new irc.CaseMapMap(buf.members);
let plusMinus = null;
let j = 0;
for (let i = 0; i < change.length; i++) {
if (change[i] === "+" || change[i] === "-") {
plusMinus = change[i];
continue;
}
if (!plusMinus) {
throw new Error("malformed mode string: missing plus/minus");
}
let mode = change[i];
let add = plusMinus === "+";
let modeType = typeByMode.get(mode);
if (!modeType) {
continue;
}
let arg = null;
if (modeType === "A" || modeType === "B" || (modeType === "C" && add)) {
arg = args[j];
j++;
}
irc.forEachChannelModeUpdate(msg, client.isupport, (mode, add, arg) => {
if (prefixByMode.has(mode)) {
let nick = arg;
let membership = members.get(nick);
let letter = prefixByMode.get(mode);
members.set(nick, updateMembership(membership, letter, add, client));
}
}
});
return { members };
});