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const std = @import("std");
const gbp = @import("ziglyph").grapheme_break;
const Prop = enum {
none,
control,
extend,
hangul_l,
hangul_lv,
hangul_lvt,
hangul_v,
hangul_t,
prepend,
regional,
spacing,
zwj,
fn forCodePoint(cp: u21) Prop {
if (gbp.isControl(cp)) return .control;
if (gbp.isExtend(cp)) return .extend;
if (gbp.isL(cp)) return .hangul_l;
if (gbp.isLv(cp)) return .hangul_lv;
if (gbp.isLvt(cp)) return .hangul_lvt;
if (gbp.isT(cp)) return .hangul_t;
if (gbp.isV(cp)) return .hangul_v;
if (gbp.isPrepend(cp)) return .prepend;
if (gbp.isRegionalIndicator(cp)) return .regional;
if (gbp.isSpacingmark(cp)) return .spacing;
if (gbp.isZwj(cp)) return .zwj;
return .none;
}
};
const block_size = 256;
const Block = [block_size]u4;
const BlockMap = std.HashMap(
Block,
u16,
struct {
pub fn hash(_: @This(), k: Block) u64 {
var hasher = std.hash.Wyhash.init(0);
std.hash.autoHashStrat(&hasher, k, .DeepRecursive);
return hasher.final();
}
pub fn eql(_: @This(), a: Block, b: Block) bool {
return std.mem.eql(u4, &a, &b);
}
},
std.hash_map.default_max_load_percentage,
);
pub fn main() !void {
var arena = std.heap.ArenaAllocator.init(std.heap.page_allocator);
defer arena.deinit();
const allocator = arena.allocator();
var blocks_map = BlockMap.init(allocator);
defer blocks_map.deinit();
var stage1 = std.ArrayList(u16).init(allocator);
defer stage1.deinit();
var stage2 = std.ArrayList(u4).init(allocator);
defer stage2.deinit();
var stage3 = std.ArrayList(Prop).init(allocator);
defer stage3.deinit();
var block: Block = undefined;
var block_len: u16 = 0;
for (0..0x10ffff + 1) |cp| {
const prop = Prop.forCodePoint(@intCast(cp));
const block_idx = blk: {
for (stage3.items, 0..) |item, i| {
if (item == prop) break :blk i;
}
const idx = stage3.items.len;
try stage3.append(prop);
break :blk idx;
};
block[block_len] = @intCast(block_idx);
block_len += 1;
if (block_len < block_size and cp != 0x10ffff) continue;
if (block_len < block_size) @memset(block[block_len..block_size], 0);
const gop = try blocks_map.getOrPut(block);
if (!gop.found_existing) {
gop.value_ptr.* = @intCast(stage2.items.len);
try stage2.appendSlice(block[0..block_len]);
}
try stage1.append(gop.value_ptr.*);
block_len = 0;
}
var args_iter = std.process.args();
_ = args_iter.skip();
const output_path = args_iter.next() orelse @panic("No output file arg!");
var out_file = try std.fs.cwd().createFile(output_path, .{});
defer out_file.close();
var out_buf = std.io.bufferedWriter(out_file.writer());
const writer = out_buf.writer();
const prop_code =
\\const Prop = enum {
\\ none,
\\
\\ control,
\\ extend,
\\ hangul_l,
\\ hangul_lv,
\\ hangul_lvt,
\\ hangul_v,
\\ hangul_t,
\\ prepend,
\\ regional,
\\ spacing,
\\ zwj,
\\};
\\
;
try writer.writeAll(prop_code);
try writer.print("const stage_1 = [{}]u16{{", .{stage1.items.len});
for (stage1.items) |v| {
_ = try writer.print("{},", .{v});
}
try writer.writeAll("};\n");
try writer.print("const stage_2 = [{}]u4{{", .{stage2.items.len});
for (stage2.items) |v| {
_ = try writer.print("{},", .{v});
}
try writer.writeAll("};\n");
try writer.print("const stage_3 = [{}]Prop{{", .{stage3.items.len});
for (stage3.items) |v| {
_ = try writer.print(".{s},", .{@tagName(v)});
}
try writer.writeAll("};\n");
const code =
\\inline fn getProp(cp: u21) Prop {
\\ const stage_1_index = cp >> 8;
\\ const stage_2_index = stage_1[stage_1_index] + (cp & 0xff);
\\ const stage_3_index = stage_2[stage_2_index];
\\ return stage_3[stage_3_index];
\\}
\\
\\pub inline fn isControl(cp: u21) bool {
\\ return getProp(cp) == .control;
\\}
\\
\\pub inline fn isExtend(cp: u21) bool {
\\ return getProp(cp) == .extend;
\\}
\\
\\pub inline fn isL(cp: u21) bool {
\\ return getProp(cp) == .hangul_l;
\\}
\\pub inline fn isLv(cp: u21) bool {
\\ return getProp(cp) == .hangul_lv;
\\}
\\pub inline fn isLvt(cp: u21) bool {
\\ return getProp(cp) == .hangul_lvt;
\\}
\\pub inline fn isV(cp: u21) bool {
\\ return getProp(cp) == .hangul_v;
\\}
\\pub inline fn isT(cp: u21) bool {
\\ return getProp(cp) == .hangul_t;
\\}
\\
\\pub inline fn isPrepend(cp: u21) bool {
\\ return getProp(cp) == .prepend;
\\}
\\
\\pub inline fn isRegionalIndicator(cp: u21) bool {
\\ return getProp(cp) == .regional;
\\}
\\
\\pub inline fn isSpacingmark(cp: u21) bool {
\\ return getProp(cp) == .spacing;
\\}
\\
\\pub inline fn isZwj(cp: u21) bool {
\\ return getProp(cp) == .zwj;
\\}
\\
;
try writer.writeAll(code);
try out_buf.flush();
}
|
