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const std = @import("std");
const fmt = std.fmt;
const fs = std.fs;
const io = std.io;
const heap = std.heap;
const mem = std.mem;
const testing = std.testing;
const unicode = std.unicode;
const grapheme = @import("Graphemes");
const Grapheme = @import("Graphemes").Grapheme;
const Graphemes = @import("Graphemes");
const GraphemeIterator = @import("Graphemes").Iterator;
const Normalize = @import("Normalize");
comptime {
testing.refAllDecls(grapheme);
}
test "Iterator.peek" {
const peek_seq = "aΔ👨🏻🌾→";
const data = try Graphemes.init(std.testing.allocator);
defer data.deinit(std.testing.allocator);
var iter = data.iterator(peek_seq);
const peek_a = iter.peek().?;
const next_a = iter.next().?;
try std.testing.expectEqual(peek_a, next_a);
try std.testing.expectEqualStrings("a", peek_a.bytes(peek_seq));
const peek_d1 = iter.peek().?;
const peek_d2 = iter.peek().?;
try std.testing.expectEqual(peek_d1, peek_d2);
const next_d = iter.next().?;
try std.testing.expectEqual(peek_d2, next_d);
try std.testing.expectEqual(iter.peek(), iter.next());
try std.testing.expectEqual(iter.peek(), iter.next());
try std.testing.expectEqual(null, iter.peek());
try std.testing.expectEqual(null, iter.peek());
try std.testing.expectEqual(iter.peek(), iter.next());
}
test "Unicode normalization tests" {
var arena = heap.ArenaAllocator.init(testing.allocator);
defer arena.deinit();
var allocator = arena.allocator();
const n = try Normalize.init(allocator);
defer n.deinit(allocator);
var file = try fs.cwd().openFile("data/unicode/NormalizationTest.txt", .{});
defer file.close();
var buf_reader = io.bufferedReader(file.reader());
const input_stream = buf_reader.reader();
var line_no: usize = 0;
var buf: [4096]u8 = undefined;
var cp_buf: [4]u8 = undefined;
while (try input_stream.readUntilDelimiterOrEof(&buf, '\n')) |line| {
line_no += 1;
// Skip comments or empty lines.
if (line.len == 0 or line[0] == '#' or line[0] == '@') continue;
// Iterate over fields.
var fields = mem.splitScalar(u8, line, ';');
var field_index: usize = 0;
var input: []u8 = undefined;
defer allocator.free(input);
while (fields.next()) |field| : (field_index += 1) {
if (field_index == 0) {
var i_buf = std.ArrayList(u8).init(allocator);
defer i_buf.deinit();
var i_fields = mem.splitScalar(u8, field, ' ');
while (i_fields.next()) |s| {
const icp = try fmt.parseInt(u21, s, 16);
const len = try unicode.utf8Encode(icp, &cp_buf);
try i_buf.appendSlice(cp_buf[0..len]);
}
input = try i_buf.toOwnedSlice();
} else if (field_index == 1) {
//debug.print("\n*** {s} ***\n", .{line});
// NFC, time to test.
var w_buf = std.ArrayList(u8).init(allocator);
defer w_buf.deinit();
var w_fields = mem.splitScalar(u8, field, ' ');
while (w_fields.next()) |s| {
const wcp = try fmt.parseInt(u21, s, 16);
const len = try unicode.utf8Encode(wcp, &cp_buf);
try w_buf.appendSlice(cp_buf[0..len]);
}
const want = w_buf.items;
var got = try n.nfc(allocator, input);
defer got.deinit(allocator);
try testing.expectEqualStrings(want, got.slice);
} else if (field_index == 2) {
// NFD, time to test.
var w_buf = std.ArrayList(u8).init(allocator);
defer w_buf.deinit();
var w_fields = mem.splitScalar(u8, field, ' ');
while (w_fields.next()) |s| {
const wcp = try fmt.parseInt(u21, s, 16);
const len = try unicode.utf8Encode(wcp, &cp_buf);
try w_buf.appendSlice(cp_buf[0..len]);
}
const want = w_buf.items;
var got = try n.nfd(allocator, input);
defer got.deinit(allocator);
try testing.expectEqualStrings(want, got.slice);
} else if (field_index == 3) {
// NFKC, time to test.
var w_buf = std.ArrayList(u8).init(allocator);
defer w_buf.deinit();
var w_fields = mem.splitScalar(u8, field, ' ');
while (w_fields.next()) |s| {
const wcp = try fmt.parseInt(u21, s, 16);
const len = try unicode.utf8Encode(wcp, &cp_buf);
try w_buf.appendSlice(cp_buf[0..len]);
}
const want = w_buf.items;
var got = try n.nfkc(allocator, input);
defer got.deinit(allocator);
try testing.expectEqualStrings(want, got.slice);
} else if (field_index == 4) {
// NFKD, time to test.
var w_buf = std.ArrayList(u8).init(allocator);
defer w_buf.deinit();
var w_fields = mem.splitScalar(u8, field, ' ');
while (w_fields.next()) |s| {
const wcp = try fmt.parseInt(u21, s, 16);
const len = try unicode.utf8Encode(wcp, &cp_buf);
try w_buf.appendSlice(cp_buf[0..len]);
}
const want = w_buf.items;
const got = try n.nfkd(allocator, input);
defer got.deinit(allocator);
try testing.expectEqualStrings(want, got.slice);
} else {
continue;
}
}
}
}
test "Segmentation GraphemeIterator" {
const allocator = std.testing.allocator;
var file = try std.fs.cwd().openFile("data/unicode/auxiliary/GraphemeBreakTest.txt", .{});
defer file.close();
var buf_reader = std.io.bufferedReader(file.reader());
var input_stream = buf_reader.reader();
const data = try Graphemes.init(allocator);
defer data.deinit(allocator);
var buf: [4096]u8 = undefined;
var line_no: usize = 1;
while (try input_stream.readUntilDelimiterOrEof(&buf, '\n')) |raw| : (line_no += 1) {
// Skip comments or empty lines.
if (raw.len == 0 or raw[0] == '#' or raw[0] == '@') continue;
// Clean up.
var line = std.mem.trimLeft(u8, raw, "÷ ");
if (std.mem.indexOf(u8, line, " ÷\t#")) |octo| {
line = line[0..octo];
}
// Iterate over fields.
var want = std.ArrayList(Grapheme).init(allocator);
defer want.deinit();
var all_bytes = std.ArrayList(u8).init(allocator);
defer all_bytes.deinit();
var graphemes = std.mem.splitSequence(u8, line, " ÷ ");
var bytes_index: u32 = 0;
while (graphemes.next()) |field| {
var code_points = std.mem.splitScalar(u8, field, ' ');
var cp_buf: [4]u8 = undefined;
var cp_index: u32 = 0;
var gc_len: u8 = 0;
while (code_points.next()) |code_point| {
if (std.mem.eql(u8, code_point, "×")) continue;
const cp: u21 = try std.fmt.parseInt(u21, code_point, 16);
const len = try unicode.utf8Encode(cp, &cp_buf);
try all_bytes.appendSlice(cp_buf[0..len]);
cp_index += len;
gc_len += len;
}
try want.append(Grapheme{ .len = gc_len, .offset = bytes_index });
bytes_index += cp_index;
}
// std.debug.print("\nline {}: {s}\n", .{ line_no, all_bytes.items });
var iter = data.iterator(all_bytes.items);
// Check.
for (want.items) |want_gc| {
const got_gc = (iter.next()).?;
try std.testing.expectEqualStrings(
want_gc.bytes(all_bytes.items),
got_gc.bytes(all_bytes.items),
);
}
}
}
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