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use std::borrow::Cow;
use std::ffi::OsString;
use std::iter;
use crate::version::{CompleteVersion, FeatureMatcher};
use super::rules::CompatCheck;
use super::strsub::{self, SubFunc};
use super::LaunchInfo;
#[derive(Clone, Copy)]
struct LaunchArgSub<'a: 'l, 'l, F: FeatureMatcher>(&'a LaunchInfo<'l, F>);
impl<'rep, 'l, F: FeatureMatcher> SubFunc<'rep> for LaunchArgSub<'rep, 'l, F> {
fn substitute(&self, key: &str) -> Option<Cow<'rep, str>> {
match key {
"assets_index_name" => self.0.asset_index_name.as_ref().map(|s| Cow::Borrowed(s.as_str())),
"assets_root" => Some(self.0.launcher.assets.get_home().to_string_lossy()),
"auth_access_token" => Some(Cow::Borrowed("-")), // TODO
"auth_player_name" => Some(Cow::Borrowed("Player")), // TODO
"auth_session" => Some(Cow::Borrowed("-")), // TODO
"auth_uuid" => Some(Cow::Borrowed("00000000-0000-0000-0000-000000000000")), // TODO
"auth_xuid" => Some(Cow::Borrowed("00000000-0000-0000-0000-000000000000")), // TODO
"classpath" => Some(Cow::Borrowed(self.0.classpath.as_str())), // TODO
"classpath_separator" => None, // FIXME
"game_assets" => self.0.virtual_assets_path.as_ref().map(|s| s.to_string_lossy()),
"game_directory" => Some(self.0.instance_home.to_string_lossy()),
"language" => Some(Cow::Borrowed("en-us")), // ???
"launcher_name" => Some(Cow::Borrowed("ozone (olauncher 3)")), // TODO
"launcher_version" => Some(Cow::Borrowed("yeah")), // TODO
"library_directory" => Some(self.0.launcher.libraries.home.to_string_lossy()),
"natives_directory" => Some(self.0.natives_path.to_string_lossy()),
"primary_jar" => self.0.client_jar.as_ref().map(|p| p.to_string_lossy()),
"quickPlayMultiplayer" => None, // TODO
"quickPlayPath" => None, // TODO
"quickPlayRealms" => None, // TODO
"quickPlaySingleplayer" => None, // TODO
"resolution_height" => None, // TODO
"resolution_width" => None, // TODO
"user_properties" => Some(Cow::Borrowed("{}")), // TODO
"user_property_map" => Some(Cow::Borrowed("[]")), // TODO
"user_type" => Some(Cow::Borrowed("legacy")), // TODO
"version_name" => Some(Cow::Borrowed(&self.0.version_id.as_ref())),
"version_type" => self.0.version_type.as_ref().map(|s| Cow::Borrowed(s.to_str())),
_ => {
if let Some(asset_key) = key.strip_prefix("asset=") {
return self.0.asset_index.as_ref()
.map_or(None, |idx| idx.objects.get(asset_key))
.map(|obj| Cow::Owned(self.0.launcher.assets.get_object_path(obj).to_string_lossy().into_owned()))
}
None
}
}
}
}
#[derive(Clone, Copy)]
pub enum ArgumentType {
JVM,
Game
}
struct OptionalIterator<I>
where
I: Iterator
{
opt: Option<I>
}
impl<I: Iterator> Iterator for OptionalIterator<I> {
type Item = I::Item;
fn next(&mut self) -> Option<Self::Item> {
match self.opt {
Some(ref mut i) => i.next(),
None => None
}
}
}
impl<II: IntoIterator> From<Option<II>> for OptionalIterator<II::IntoIter> {
fn from(opt: Option<II>) -> Self {
OptionalIterator {
opt: opt.map(IntoIterator::into_iter)
}
}
}
pub fn build_arguments<'l, F: FeatureMatcher>(launch: &LaunchInfo<'l, F>, version: &CompleteVersion, arg_type: ArgumentType) -> Vec<OsString> {
let sub = LaunchArgSub(launch);
let system_info = &launch.launcher.system_info;
if let Some(arguments) = version.arguments.as_ref().map_or(None, |args| match arg_type {
ArgumentType::JVM => args.jvm.as_ref(),
ArgumentType::Game => args.game.as_ref()
}) {
arguments.iter()
.flat_map(|wa| OptionalIterator::from(wa.rules_apply(system_info, launch.feature_matcher).ok().map(|_| &wa.value)))
.map(|s| OsString::from(strsub::replace_string(s, &sub).into_owned())).collect()
} else if let Some(arguments) = version.minecraft_arguments.as_ref() {
match arg_type {
ArgumentType::JVM => {
todo!()
}
ArgumentType::Game => {
arguments.split(' ')
.chain(iter::once("--demo")
.take_while(|_| launch.feature_matcher.matches("is_demo_user")))
.chain(iter::once(["--width", "${resolution_width}", "--height", "${resolution_height}"])
.take_while(|_| launch.feature_matcher.matches("has_custom_resolution"))
.flatten())
.map(|s| OsString::from(strsub::replace_string(s, &sub).into_owned()))
.collect()
}
}
} else {
Vec::default()
}
}
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