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//! Compatibility Data
nfkd: [][]u21 = undefined,
cps: []u21 = undefined,
const CompatData = @This();
pub fn init(allocator: mem.Allocator) !CompatData {
const decompressor = compress.flate.inflate.decompressor;
const in_bytes = @embedFile("compat");
var in_fbs = std.io.fixedBufferStream(in_bytes);
var in_decomp = decompressor(.raw, in_fbs.reader());
var reader = in_decomp.reader();
const endian = builtin.cpu.arch.endian();
var cpdata = CompatData{
.nfkd = try allocator.alloc([]u21, 0x110000),
};
{
errdefer allocator.free(cpdata.nfkd);
cpdata.cps = try allocator.alloc(u21, magic.compat_size);
}
errdefer cpdata.deinit(allocator);
@memset(cpdata.nfkd, &.{});
var total_len: usize = 0;
while (true) {
const len: u8 = try reader.readInt(u8, endian);
if (len == 0) break;
const cp = try reader.readInt(u24, endian);
const nk_s = cpdata.cps[total_len..][0 .. len - 1];
for (0..len - 1) |i| {
nk_s[i] = @intCast(try reader.readInt(u24, endian));
}
cpdata.nfkd[cp] = nk_s;
total_len += len - 1;
}
if (comptime magic.print) std.debug.print("CompatData magic number: {d}", .{total_len});
return cpdata;
}
pub fn deinit(cpdata: *const CompatData, allocator: mem.Allocator) void {
allocator.free(cpdata.cps);
allocator.free(cpdata.nfkd);
}
/// Returns compatibility decomposition for `cp`.
pub fn toNfkd(cpdata: *const CompatData, cp: u21) []u21 {
return cpdata.nfkd[cp];
}
const std = @import("std");
const builtin = @import("builtin");
const compress = std.compress;
const mem = std.mem;
const magic = @import("magic");
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