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// file : tests/utf8/driver.cxx -*- C++ -*-
// license : MIT; see accompanying LICENSE file
#include <cassert>
#ifndef __cpp_lib_modules_ts
#include <string>
#endif
// Other includes.
#ifdef __cpp_modules_ts
#ifdef __cpp_lib_modules_ts
import std.core;
#endif
import butl.utility;
#else
#include <libbutl/utility.mxx>
#endif
using namespace std;
using namespace butl;
int
main ()
{
// Valid sequences.
//
// Empty.
//
assert (utf8 (""));
// 1 code point.
//
assert (utf8 ("a")); // 1 byte.
assert (utf8 ("\xD0\xB0")); // 2 bytes.
assert (utf8 ("\xE4\xBA\x8C")); // 3 bytes.
assert (utf8 ("\xF0\x90\x8C\x82")); // 4 bytes.
// Multiple code points.
//
assert (utf8 ("a\xD0\xB0\xE4\xBA\x8C\xF0\x90\x8C\x82"));
// Ill-formed sequences.
//
// 2-byte sequences.
//
assert (!utf8 ("\xC1\x80")); // Invalid first byte.
assert (!utf8 ("\xD0y")); // Invalid second byte.
// 3-byte sequences.
//
assert (!utf8 ("\xE2\x70\x80")); // Invalid second byte.
assert (!utf8 ("\xE2\x80\x70")); // Invalid third byte.
assert (!utf8 ("\xED\xA0\x80")); // Min UTF-16 surrogate value.
assert (!utf8 ("\xED\xBF\xBF")); // Max UTF-16 surrogate value.
// 4-byte sequences.
//
assert (!utf8 ("\xF5\x80\x80\x80")); // Invalid first byte.
assert (!utf8 ("\xF0\x80\x80\x80")); // Invalid second byte.
assert (!utf8 ("\xF0\x90\x70\x80")); // Invalid third byte.
assert (!utf8 ("\xF1\x80\x80\xC0")); // Invalid forth byte.
// Out of the codepoint range (0x10ffff + 1).
//
assert (!utf8 ("\xF4\x90\x80\x80"));
// Incomplete sequences.
//
assert (!utf8 ("\xD0")); // 2-byte sequence.
assert (!utf8 ("\xE4\xBA")); // 3-byte sequence.
assert (!utf8 ("\xF0\x90\x8C")); // 4-byte sequence.
// Missing sequence leading bytes.
//
assert (!utf8 ("\xB0xyz")); // 2-byte sequence.
assert (!utf8 ("\xBA\x8Cxyz")); // 3-byte sequence.
assert (!utf8 ("\x8Cxyz")); // 3-byte sequence.
assert (!utf8 ("\x90\x8C\x82xyz")); // 4-byte sequence.
assert (!utf8 ("\x8C\x82xyz")); // 4-byte sequence.
assert (!utf8 ("\x82xyz")); // 4-byte sequence.
// Whitelisting.
//
assert (utf8 ("\r\t\n"));
// Matched codepoint types.
//
// Control.
//
assert (utf8 ("\r", codepoint_types::control));
assert (utf8 ("\x7F", codepoint_types::control));
// Non-character.
//
assert (utf8 ("\xF4\x8F\xBF\xBF", codepoint_types::non_character));
assert (utf8 ("\xEF\xB7\x90", codepoint_types::non_character));
// Private-use.
//
assert (utf8 ("\xEE\x80\x80", codepoint_types::private_use));
assert (utf8 ("\xF3\xB0\x80\x80", codepoint_types::private_use));
// Reserved.
//
assert (utf8 ("\xF3\xA1\x80\x80", codepoint_types::reserved));
assert (utf8 ("\xF0\xB0\x80\x80", codepoint_types::reserved));
assert (utf8 ("\xF3\xA0\x82\x80", codepoint_types::reserved));
// Format.
//
assert (utf8 ("\xC2\xAD", codepoint_types::format));
assert (utf8 ("\xD8\x80", codepoint_types::format));
assert (utf8 ("\xD8\x81", codepoint_types::format));
assert (utf8 ("\xD8\x85", codepoint_types::format));
assert (utf8 ("\xF3\xA0\x81\xBF", codepoint_types::format));
// Graphic.
//
assert (utf8 ("\xC2\xAC", codepoint_types::graphic));
assert (utf8 ("\xC2\xAE", codepoint_types::graphic));
assert (utf8 ("\xD8\x86", codepoint_types::graphic));
assert (utf8 ("\xF3\xA0\x84\x80", codepoint_types::graphic));
// Private-use & graphic.
//
assert (utf8 ("\xEE\x80\x80\xF3\xB0\x80\x80\xC2\xAC",
codepoint_types::private_use | codepoint_types::graphic));
// None.
//
assert (utf8 ("\t", codepoint_types::none, U"\t")); // Whitelisted.
// Any.
//
assert (utf8 ("\t"));
// Unmatched codepoint types.
//
assert (!utf8 ("\x7F", codepoint_types::graphic, U"\t")); // Control.
assert (!utf8 ("\xEF\xB7\x90", codepoint_types::graphic)); // Non-char.
assert (!utf8 ("\xEE\x80\x80", codepoint_types::graphic)); // Private.
assert (!utf8 ("\xF3\xA1\x80\x80", codepoint_types::graphic)); // Reserved.
assert (!utf8 ("\xF3\xA0\x81\xBF", codepoint_types::graphic)); // Format.
assert (!utf8 ("\xC2\xAC", codepoint_types::format)); // Graphic.
// Private-use & Graphic.
//
assert (!utf8 ("\xEE\x80\x80\xF3\xB0\x80\x80\xC2\xAC",
codepoint_types::format));
assert (!utf8 ("a", codepoint_types::none)); // None.
}
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