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const std = @import("std");
const builtin = @import("builtin");
pub const Emoji = packed struct {
Emoji: bool = false,
Emoji_Presentation: bool = false,
Emoji_Modifier: bool = false,
Emoji_Modifier_Base: bool = false,
Emoji_Component: bool = false,
Extended_Pictographic: bool = false,
};
const block_size = 256;
const Block = [block_size]u6;
comptime {
if (@bitSizeOf(u6) != @bitSizeOf(Emoji)) {
@compileError("Emoji doesn't have expected bit size.");
}
}
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(u6, &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 emoji_map = std.AutoHashMap(u21, Emoji).init(allocator);
defer emoji_map.deinit();
// Process Emoji
var @"emo-reader" = std.io.Reader.fixed(@embedFile("emoji-data.txt"));
var count: usize = 0; // XXX: remove
while (@"emo-reader".takeDelimiterInclusive('\n')) |line| {
count += 1;
if (line.len <= 1 or line[0] == '#') continue;
const no_comment = if (std.mem.indexOfScalar(u8, line, '#')) |octo| line[0..octo] else line;
var field_iter = std.mem.tokenizeAny(u8, no_comment, "; ");
var current_code: [2]u21 = undefined;
var i: usize = 0;
while (field_iter.next()) |field| : (i += 1) {
switch (i) {
0 => {
// Code point(s)
if (std.mem.indexOf(u8, field, "..")) |dots| {
current_code = .{
try std.fmt.parseInt(u21, field[0..dots], 16),
try std.fmt.parseInt(u21, field[dots + 2 ..], 16),
};
} else {
const code = try std.fmt.parseInt(u21, field, 16);
current_code = .{ code, code };
}
},
1 => {
// Prop
const prop = std.meta.stringToEnum(std.meta.FieldEnum(Emoji), field) orelse return error.InvalidProp;
for (current_code[0]..current_code[1] + 1) |code| {
const cp: u21 = @intCast(code);
const gop = try emoji_map.getOrPut(cp);
if (!gop.found_existing) gop.value_ptr.* = .{};
switch (prop) {
inline else => |tag| {
@field(gop.value_ptr.*, @tagName(tag)) = true;
},
}
}
},
else => {},
}
}
} else |err| switch (err) {
error.EndOfStream => {},
else => {
return err;
},
}
var blocks_map = BlockMap.init(allocator);
defer blocks_map.deinit();
var stage1 = std.array_list.Managed(u16).init(allocator);
defer stage1.deinit();
var stage2 = std.array_list.Managed(u6).init(allocator);
defer stage2.deinit();
var block: Block = [_]u6{0} ** block_size;
var block_len: u16 = 0;
for (0..0x110000) |i| {
const cp: u21 = @intCast(i);
const emoji = emoji_map.get(cp) orelse Emoji{};
block[block_len] = @bitCast(emoji);
block_len += 1;
if (block_len < block_size and cp != 0x10ffff) continue;
const gop = try blocks_map.getOrPut(block);
if (!gop.found_existing) {
gop.value_ptr.* = @intCast(stage2.items.len);
try stage2.appendSlice(&block);
}
try stage1.append(gop.value_ptr.*);
block_len = 0;
}
var args_iter = try std.process.argsWithAllocator(allocator);
defer args_iter.deinit();
_ = args_iter.skip();
const output_path = args_iter.next() orelse @panic("No output file arg!");
var write_buf: [4096]u8 = undefined;
var out_file = try std.fs.cwd().createFile(output_path, .{});
defer out_file.close();
var writer = out_file.writer(&write_buf);
try writer.interface.print(
\\//! This file is auto-generated. Do not edit.
\\
\\pub const s1: [{}]u16 = .{{
, .{stage1.items.len});
for (stage1.items) |entry| try writer.interface.print("{}, ", .{entry});
try writer.interface.print(
\\
\\}};
\\
\\pub const s2: [{}]u6 = .{{
, .{stage2.items.len});
for (stage2.items) |entry| {
try writer.interface.print("{}, ", .{entry});
}
try writer.interface.writeAll(
\\};
);
try writer.interface.flush();
}
|
