mirror of
https://mzte.de/git/LordMZTE/dotfiles.git
synced 2024-05-17 06:23:50 +02:00
163 lines
4.8 KiB
Zig
163 lines
4.8 KiB
Zig
//! Module for the JDTLS java language server, including utilities
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//! for setting up nvim-jdtls
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const std = @import("std");
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const ser = @import("../ser.zig");
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const ffi = @import("../ffi.zig");
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const c = ffi.c;
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pub fn luaPush(l: *c.lua_State) void {
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ser.luaPushAny(l, .{
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.findRuntimes = ffi.luaFunc(lFindRuntimes),
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.getBundleInfo = ffi.luaFunc(lGetBundleInfo),
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.getDirs = ffi.luaFunc(lGetDirs),
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});
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}
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const Runtime = struct {
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version: [:0]const u8,
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name: [:0]const u8,
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};
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const runtime_map = [_]Runtime{
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.{ .version = "18", .name = "JavaSE-18" },
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.{ .version = "17", .name = "JavaSE-17" },
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.{ .version = "16", .name = "JavaSE-16" },
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.{ .version = "15", .name = "JavaSE-15" },
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.{ .version = "14", .name = "JavaSE-14" },
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.{ .version = "13", .name = "JavaSE-13" },
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.{ .version = "12", .name = "JavaSE-12" },
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.{ .version = "11", .name = "JavaSE-11" },
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.{ .version = "10", .name = "JavaSE-10" },
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.{ .version = "9", .name = "JavaSE-9" },
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.{ .version = "8", .name = "JavaSE-1.8" },
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.{ .version = "7", .name = "JavaSE-1.7" },
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.{ .version = "6", .name = "JavaSE-1.6" },
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.{ .version = "5", .name = "J2SE-1.5" }, // probably redundant, but JDTLS supports it
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};
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fn lFindRuntimes(l: *c.lua_State) !c_int {
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var jvmdir = try std.fs.openDirAbsolute("/usr/lib/jvm/", .{ .iterate = true });
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defer jvmdir.close();
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c.lua_newtable(l);
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var buf: [512]u8 = undefined;
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var idx: c_int = 1;
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var iter = jvmdir.iterate();
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while (try iter.next()) |jvm| {
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if (jvm.kind != .directory or !std.mem.startsWith(u8, jvm.name, "java-"))
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continue;
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for (runtime_map) |rt| {
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if (!std.mem.containsAtLeast(u8, jvm.name, 1, rt.version))
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continue;
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// push a table with a name field (must be a name from runtime_map)
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// and a path field (path to the runtime's home)
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ser.luaPushAny(l, .{
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.name = rt.name,
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.path = try std.fmt.bufPrintZ(&buf, "/usr/lib/jvm/{s}/", .{jvm.name}),
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});
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// append table to list
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c.lua_rawseti(l, -2, idx);
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idx += 1;
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break;
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}
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}
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return 1;
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}
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/// Returns a list of JDTLS bundles (plugins basically) and the preferred content provider
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///
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/// https://github.com/dgileadi/vscode-java-decompiler/tree/master/server
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// TODO: add command to download these maybe?
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fn lGetBundleInfo(l: *c.lua_State) !c_int {
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const home = std.posix.getenv("HOME") orelse return error.HomeNotSet;
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const bundle_path = try std.fs.path.join(
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std.heap.c_allocator,
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// I kinda made this path up, but I think it makes sense.
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&.{ home, ".eclipse", "jdtls", "bundles" },
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);
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defer std.heap.c_allocator.free(bundle_path);
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var dir = std.fs.cwd().openDir(bundle_path, .{ .iterate = true }) catch |e| {
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if (e == error.FileNotFound) {
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// Just return an empty table if the bundles dir doesn't exist
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ser.luaPushAny(l, .{
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.content_provider = .{},
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.bundles = .{},
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});
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return 1;
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}
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return e;
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};
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defer dir.close();
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// return value
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c.lua_newtable(l);
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// bundles
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c.lua_newtable(l);
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var has_fernflower = false;
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var iter = dir.iterate();
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var idx: c_int = 1;
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while (try iter.next()) |f| {
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if (f.kind != .file or !std.mem.endsWith(u8, f.name, ".jar"))
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continue;
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if (!has_fernflower and std.mem.containsAtLeast(u8, f.name, 1, "fernflower"))
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has_fernflower = true;
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const path = try std.fs.path.joinZ(std.heap.c_allocator, &.{ bundle_path, f.name });
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defer std.heap.c_allocator.free(path);
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c.lua_pushstring(l, path.ptr);
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c.lua_rawseti(l, -2, idx);
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idx += 1;
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}
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c.lua_setfield(l, -2, "bundles");
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// content_provider
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c.lua_newtable(l);
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if (has_fernflower) {
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c.lua_pushstring(l, "fernflower");
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c.lua_setfield(l, -2, "preferred");
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}
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c.lua_setfield(l, -2, "content_provider");
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return 1;
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}
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fn lGetDirs(l: *c.lua_State) !c_int {
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const home = std.posix.getenv("HOME") orelse return error.HomeNotSet;
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var cwd_buf: [256]u8 = undefined;
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const cwd_basename = std.fs.path.basename(try std.posix.getcwd(&cwd_buf));
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const config_path = try std.fs.path.joinZ(
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std.heap.c_allocator,
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&.{ home, ".cache", "jdtls", "config" },
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);
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defer std.heap.c_allocator.free(config_path);
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const workspace_path = try std.fs.path.joinZ(
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std.heap.c_allocator,
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&.{ home, ".cache", "jdtls", "workspace", cwd_basename },
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);
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defer std.heap.c_allocator.free(workspace_path);
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ser.luaPushAny(l, .{
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.config = config_path,
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.workspace = workspace_path,
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});
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return 1;
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}
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