fix geoip chi and zho not return chinese translation

[Lxeon]

GeoLite2-City.mmdb supports zh-CN, but does not support chi and zho in sourcemod

The Chinese translation cannot be returned.

This is a fix when GetLanguageInfo got chi or zho, convert to zh-CN to match GeoLite2-City.mmdb

[peace-maker]

Good catch! Can we be sure that the mmdb always contains the zh-CN locale? It might be safer to check that and fallback properly if not.

[Lxeon]

i already check the GeoLite2-City.mmdb in sourcemod, date 2019/12/17.

and the first comment pictrue is this version.(download from sourcemod latest release)

I also checked maxmind webside, although it is a csv version, I think it apply to mmdb too.

or maybe for code robustness, change the code like this:

if (translator->GetLanguageInfo(langid, &code, NULL))
{
	for (size_t i = 0; i < mmdb.metadata.languages.count; i++)
	{
		if (strcmp(code, mmdb.metadata.languages.names[i]) == 0)
		{
			return code;
		}
		// Not sure whether mmdb will include chi or zho in the future, so multiple judgments
		if ((strcmp(code, "chi") == 0 || strcmp(code, "zho") == 0) && strcmp(mmdb.metadata.languages.names[i], "zh-CN"))
		{
			return "zh-CN";
		}
	}
}

[F1F88]

If it is confirmed that the simplified Chinese language code of mmdb is "zh-CN", would it be better to modify the variable code directly?

Even if mmdb does not contain the "zh-CN" language, we can return "en" as a fallback.

if (translator->GetLanguageInfo(langid, &code, NULL))
{
	if (strcmp(code, "chi") == 0)
	{
		code = "zh-CN";
	}
	else if (strcmp(code, "zho") == 0)
	{
		code = "zh-TW";
	}

	for (size_t i = 0; i < mmdb.metadata.languages.count; i++)
	{
		if (strcmp(code, mmdb.metadata.languages.names[i]) == 0)
		{
			return code;
		}
	}
}

[Lxeon]

If it is confirmed that the simplified Chinese language code of mmdb is "zh-CN", would it be better to modify the variable code directly?

Even if mmdb does not contain the "zh-CN" language, we can return "en" as a fallback.

if (translator->GetLanguageInfo(langid, &code, NULL))
{
	if (strcmp(code, "chi") == 0)
	{
		code = "zh-CN";
	}
	else if (strcmp(code, "zho") == 0)
	{
		code = "zh-TW";
	}

	for (size_t i = 0; i < mmdb.metadata.languages.count; i++)
	{
		if (strcmp(code, mmdb.metadata.languages.names[i]) == 0)
		{
			return code;
		}
	}
}

sourcemod default mmdb version didnt contain zh-TW, so it will cause error.

i not sure if mmdb is customizable.

[F1F88]

sourcemod default mmdb version didnt contain zh-TW, so it will cause error.

i not sure if mmdb is customizable.

This does not cause an error, but returns the default language "en".

See line 196:

https://github.com/alliedmodders/sourcemod/blob/20642a8518904ccfa0d36905471a313fcca2db7a/extensions/geoip/geoip_util.cpp#L186-L197

I checked GeoLite2-City_20250610 and it doesn't include zh-TW either.

~~When I asked chatgpt what languages ​​geoip returns, gpt's answer included zh-TW. Sorry, I should have verified this answer myself first.~~

[Lxeon]

sourcemod default mmdb version didnt contain zh-TW, so it will cause error. i not sure if mmdb is customizable.

This does not cause an error, but returns the default language "en".

See line 196:

https://github.com/alliedmodders/sourcemod/blob/20642a8518904ccfa0d36905471a313fcca2db7a/extensions/geoip/geoip_util.cpp#L186-L197

I checked GeoLite2-City_20250610 and it doesn't include zh-TW either.

~When I asked chatgpt what languages ​​geoip returns, gpt's answer included zh-TW. Sorry, I should have verified this answer myself first.~

ye i miss the final return. and i think mmdb must include zh-cn.

[peace-maker]

I think normalizing the language code before looking it up in the available languages in the mmdb is the way to go as @F1F88 suggested is the way to go. Falling back to English is what we do everywhere else. Can you please adjust your code accordingly?

[Lxeon]

I think normalizing the language code before looking it up in the available languages in the mmdb is the way to go as @F1F88 suggested is the way to go. Falling back to English is what we do everywhere else. Can you please adjust your code accordingly?

code optimized. please check