85 lines
2.6 KiB
TypeScript
85 lines
2.6 KiB
TypeScript
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export type TerminalEncodingPreference = 'utf-8' | 'gb18030';
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export const isTerminalEncodingPreference = (
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value: string | null | undefined,
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): value is TerminalEncodingPreference => value === 'utf-8' || value === 'gb18030';
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const normalizeCharsetToken = (value: string): string => value.replace(/[^a-z0-9]/g, "");
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const GB18030_CHARSET_TOKENS = new Set(["gb18030", "gbk", "gb2312", "cp936", "ms936"]);
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const UTF8_CHARSET_TOKENS = new Set(["utf8", "utf"]);
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export const resolveTerminalEncodingFromCharset = (
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charset?: string,
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): TerminalEncodingPreference | null => {
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if (!charset) return null;
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const raw = String(charset).trim().toLowerCase();
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if (!raw) return null;
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const localeCodeset = raw.match(/\.([^@]+)(?:@.*)?$/)?.[1];
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const candidates = [raw, localeCodeset].filter((value): value is string => Boolean(value));
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if (candidates.some((candidate) => GB18030_CHARSET_TOKENS.has(normalizeCharsetToken(candidate)))) {
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return 'gb18030';
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}
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if (candidates.some((candidate) => UTF8_CHARSET_TOKENS.has(normalizeCharsetToken(candidate)))) {
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return 'utf-8';
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}
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return null;
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};
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export const resolveInitialTerminalEncoding = (
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charset?: string,
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rememberedEncoding?: string | null,
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): TerminalEncodingPreference => {
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const charsetEncoding = resolveTerminalEncodingFromCharset(charset);
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const remembered = isTerminalEncodingPreference(rememberedEncoding) ? rememberedEncoding : null;
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if (remembered && (charsetEncoding !== null || !String(charset ?? "").trim())) {
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return remembered;
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}
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return charsetEncoding ?? 'utf-8';
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};
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export const terminalEncodingPreferenceToCharset = (
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encoding: TerminalEncodingPreference,
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): string => (encoding === 'gb18030' ? 'GB18030' : 'UTF-8');
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export type TerminalEncodingAttachConnection = 'ssh' | 'telnet' | 'serial' | 'other';
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export const shouldSyncTerminalEncodingOnAttach = ({
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connection,
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userPickedEncoding,
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hasRememberedEncoding,
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}: {
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connection: TerminalEncodingAttachConnection;
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userPickedEncoding: boolean;
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hasRememberedEncoding: boolean;
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}): boolean => {
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if (connection === 'ssh') return true;
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if (connection === 'telnet' || connection === 'serial') {
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return userPickedEncoding || hasRememberedEncoding;
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}
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return false;
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};
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export const createTerminalEncodingStorageKey = (
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prefix: string,
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host: {
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id?: string;
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protocol?: string;
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username?: string;
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hostname?: string;
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port?: number;
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},
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): string => {
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const stableHostId = host.id?.trim();
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const rawKey = stableHostId || [
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host.protocol || 'ssh',
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host.username || '',
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host.hostname || '',
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host.port ?? '',
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].join('|');
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return `${prefix}${encodeURIComponent(rawKey)}`;
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};
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