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const std = @import("std");
const builtin = @import("builtin");
const compress = std.compress;
const mem = std.mem;
/// General Category
pub const Gc = enum {
Cc,
Cf,
Cn,
Co,
Cs,
Ll,
Lm,
Lo,
Lt,
Lu,
Mc,
Me,
Mn,
Nd,
Nl,
No,
Pc,
Pd,
Pe,
Pf,
Pi,
Po,
Ps,
Sc,
Sk,
Sm,
So,
Zl,
Zp,
Zs,
};
allocator: mem.Allocator,
s1: []u16 = undefined,
s2: []u5 = undefined,
s3: []u5 = undefined,
const Self = @This();
pub fn init(allocator: mem.Allocator) !Self {
const decompressor = compress.deflate.decompressor;
const in_bytes = @embedFile("gencat");
var in_fbs = std.io.fixedBufferStream(in_bytes);
var in_decomp = try decompressor(allocator, in_fbs.reader(), null);
defer in_decomp.deinit();
var reader = in_decomp.reader();
const endian = builtin.cpu.arch.endian();
var self = Self{ .allocator = allocator };
const s1_len: u16 = try reader.readInt(u16, endian);
self.s1 = try allocator.alloc(u16, s1_len);
for (0..s1_len) |i| self.s1[i] = try reader.readInt(u16, endian);
const s2_len: u16 = try reader.readInt(u16, endian);
self.s2 = try allocator.alloc(u5, s2_len);
for (0..s2_len) |i| self.s2[i] = @intCast(try reader.readInt(u8, endian));
const s3_len: u16 = try reader.readInt(u8, endian);
self.s3 = try allocator.alloc(u5, s3_len);
for (0..s3_len) |i| self.s3[i] = @intCast(try reader.readInt(u8, endian));
return self;
}
pub fn deinit(self: *Self) void {
self.allocator.free(self.s1);
self.allocator.free(self.s2);
self.allocator.free(self.s3);
}
/// Lookup the General Category for `cp`.
pub inline fn gc(self: Self, cp: u21) Gc {
return @enumFromInt(self.s3[self.s2[self.s1[cp >> 8] + (cp & 0xff)]]);
}
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