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// SPDX-License-Identifier: BSL-1.0
#include <string.h>
#ifndef BUNDLED_CATCH2
#ifdef CATCH3
#include "catch2/catch_all.hpp"
#else
#include "catch2/catch.hpp"
#endif
#else
#include "../third-party/catch.hpp"
#endif
typedef bool _Bool;
#include <termpaint_utf8.h>
template <typename X>
static const unsigned char* u8p(X); // intentionally undefined
template <>
const unsigned char* u8p(const char *str) {
return (const unsigned char*)str;
}
TEST_CASE("misc invalid single byte utf8") {
unsigned char ch;
for (int i = 0x80; i < 0xc0; i++) {
INFO(i);
ch = i;
REQUIRE(termpaintp_check_valid_sequence(&ch, 1) == false);
}
{
INFO(0xfe);
ch = 0xfe;
REQUIRE(termpaintp_check_valid_sequence(&ch, 1) == false);
}
{
INFO(0xff);
ch = 0xff;
REQUIRE(termpaintp_check_valid_sequence(&ch, 1) == false);
}
}
TEST_CASE("short utf8 sequences") {
}
static inline int create_encoding_with_length(int codepoint, unsigned char *buf, int length) {
#define STORE_AND_SHIFT(index) \
buf[index] = (codepoint & 0b00111111) | 0x80; \
codepoint = codepoint >> 6;
if (length == 6) {
//This is implied by the range of int:
//REQUIRE(codepoint < (1u << (6*5+1)));
STORE_AND_SHIFT(5)
STORE_AND_SHIFT(4)
STORE_AND_SHIFT(3)
STORE_AND_SHIFT(2)
STORE_AND_SHIFT(1)
buf[0] = 0b11111100 | codepoint;
return 6;
} else if (length == 5) {
REQUIRE(codepoint < (1 << (6*4+2)));
STORE_AND_SHIFT(4)
STORE_AND_SHIFT(3)
STORE_AND_SHIFT(2)
STORE_AND_SHIFT(1)
buf[0] = 0b11111000 | codepoint;
return 5;
} else if (length == 4) {
REQUIRE(codepoint < (1 << (6*3+3)));
STORE_AND_SHIFT(3)
STORE_AND_SHIFT(2)
STORE_AND_SHIFT(1)
buf[0] = 0b11110000 | codepoint;
return 4;
} else if (length == 3) {
REQUIRE(codepoint < (1 << (6*2+4)));
STORE_AND_SHIFT(2)
STORE_AND_SHIFT(1)
buf[0] = 0b11100000 | codepoint;
return 3;
} else if (length == 2) {
REQUIRE(codepoint < (1 << (6*1+5)));
STORE_AND_SHIFT(1)
buf[0] = 0b11000000 | codepoint;
return 2;
} else {
REQUIRE(codepoint < 0x80);
REQUIRE(length == 1);
buf[0] = codepoint;
return 1;
}
#undef STORE_AND_SHIFT
}
TEST_CASE("Non shortest form") {
SECTION ("2 byte /") {
REQUIRE(termpaintp_check_valid_sequence(u8p("\xc1\x9c"), 2) == false);
}
SECTION ("2 byte A") {
REQUIRE(termpaintp_check_valid_sequence(u8p("\xc1\x81"), 2) == false);
}
SECTION ("3 byte A") {
REQUIRE(termpaintp_check_valid_sequence(u8p("\xe0\x81\x81"), 3) == false);
}
SECTION ("overlong nul") {
unsigned char buffer[7];
for (int i = 2; i < 7; i++) {
INFO(i);
create_encoding_with_length(0, buffer, i);
REQUIRE(termpaintp_check_valid_sequence(buffer, i) == false);
}
}
SECTION ("overlong 0x7f") {
unsigned char buffer[7];
for (int i = 2; i < 7; i++) {
INFO(i);
create_encoding_with_length(0x7f, buffer, i);
REQUIRE(termpaintp_check_valid_sequence(buffer, i) == false);
}
}
SECTION ("overlong 0x80") {
unsigned char buffer[7];
for (int i = 3; i < 7; i++) {
INFO(i);
create_encoding_with_length(0x80, buffer, i);
REQUIRE(termpaintp_check_valid_sequence(buffer, i) == false);
}
}
SECTION ("overlong 0x7ff") {
unsigned char buffer[7];
for (int i = 3; i < 7; i++) {
INFO(i);
create_encoding_with_length(0x7ff, buffer, i);
REQUIRE(termpaintp_check_valid_sequence(buffer, i) == false);
}
}
SECTION ("overlong 0x800") {
unsigned char buffer[7];
for (int i = 4; i < 7; i++) {
INFO(i);
create_encoding_with_length(0x800, buffer, i);
REQUIRE(termpaintp_check_valid_sequence(buffer, i) == false);
}
}
SECTION ("overlong 0xffff") {
unsigned char buffer[7];
for (int i = 4; i < 7; i++) {
INFO(i);
create_encoding_with_length(0xffff, buffer, i);
REQUIRE(termpaintp_check_valid_sequence(buffer, i) == false);
}
}
SECTION ("overlong 0x10000") {
unsigned char buffer[7];
for (int i = 5; i < 7; i++) {
INFO(i);
create_encoding_with_length(0x10000, buffer, i);
REQUIRE(termpaintp_check_valid_sequence(buffer, i) == false);
}
}
SECTION ("overlong 0x1fffff") {
unsigned char buffer[7];
for (int i = 5; i < 7; i++) {
INFO(i);
create_encoding_with_length(0x1fffff, buffer, i);
REQUIRE(termpaintp_check_valid_sequence(buffer, i) == false);
}
}
SECTION ("overlong 0x200000") {
unsigned char buffer[7];
create_encoding_with_length(0x200000, buffer, 6);
REQUIRE(termpaintp_check_valid_sequence(buffer, 6) == false);
}
SECTION ("overlong 0x3ffffff") {
unsigned char buffer[7];
create_encoding_with_length(0x3ffffff, buffer, 6);
REQUIRE(termpaintp_check_valid_sequence(buffer, 6) == false);
}
}
static void codepoint_test(unsigned lower, unsigned upper) {
unsigned char buffer[7];
for (unsigned codepoint = lower; codepoint <= upper; codepoint++) {
INFO(codepoint);
memset(buffer, 42, 7);
int len = termpaintp_encode_to_utf8(codepoint, buffer);
REQUIRE(buffer[len] == 42);
REQUIRE(len == termpaintp_utf8_len(buffer[0]));
INFO("buffer " << std::hex << (unsigned)buffer[0] << " " << (unsigned)buffer[1]
<< " " << (unsigned)buffer[2] << " " << (unsigned)buffer[3]
<< " " << (unsigned)buffer[4] << " " << (unsigned)buffer[5]);
if (codepoint > 0xd7ff && codepoint < 0xe000) {
REQUIRE(termpaintp_check_valid_sequence(buffer, len) == false);
} else {
REQUIRE(termpaintp_check_valid_sequence(buffer, len) == true);
}
}
}
TEST_CASE( "utf8 brute force unicode", "[utf8]" ) {
codepoint_test(1, 0x10ffff);
}
TEST_CASE( "utf8 brute force", "[.utf8slow]" ) {
codepoint_test(1, 0x7fffffff);
}
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