xref: /openbmc/u-boot/test/unicode_ut.c (revision 7086a71a) 
1 // SPDX-License-Identifier: GPL-2.0+
2 /*
3  * Unit tests for Unicode functions
4  *
5  * Copyright (c) 2018 Heinrich Schuchardt <xypron.glpk@gmx.de>
6  */
7 
8 #include <common.h>
9 #include <charset.h>
10 #include <command.h>
11 #include <errno.h>
12 #include <test/test.h>
13 #include <test/suites.h>
14 #include <test/ut.h>
15 
16 /* Linker list entry for a Unicode test */
17 #define UNICODE_TEST(_name) UNIT_TEST(_name, 0, unicode_test)
18 
19 /* Constants c1-c4 and d1-d4 encode the same letters */
20 
21 /* Six characters translating to one utf-8 byte each. */
22 static const u16 c1[] = {0x55, 0x2d, 0x42, 0x6f, 0x6f, 0x74, 0x00};
23 /* One character translating to two utf-8 bytes */
24 static const u16 c2[] = {0x6b, 0x61, 0x66, 0x62, 0xe1, 0x74, 0x75, 0x72, 0x00};
25 /* Three characters translating to three utf-8 bytes each */
26 static const u16 c3[] = {0x6f5c, 0x6c34, 0x8266, 0x00};
27 /* Three letters translating to four utf-8 bytes each */
28 static const u16 c4[] = {0xd801, 0xdc8d, 0xd801, 0xdc96, 0xd801, 0xdc87,
29 			 0x0000};
30 
31 /* Illegal utf-16 strings */
32 static const u16 i1[] = {0x69, 0x31, 0xdc87, 0x6c, 0x00};
33 static const u16 i2[] = {0x69, 0x32, 0xd801, 0xd801, 0x6c, 0x00};
34 static const u16 i3[] = {0x69, 0x33, 0xd801, 0x00};
35 
36 /* Six characters translating to one utf-16 word each. */
37 static const char d1[] = {0x55, 0x2d, 0x42, 0x6f, 0x6f, 0x74, 0x00};
38 /* Eight characters translating to one utf-16 word each */
39 static const char d2[] = {0x6b, 0x61, 0x66, 0x62, 0xc3, 0xa1, 0x74, 0x75,
40 			  0x72, 0x00};
41 /* Three characters translating to one utf-16 word each */
42 static const char d3[] = {0xe6, 0xbd, 0x9c, 0xe6, 0xb0, 0xb4, 0xe8, 0x89,
43 			  0xa6, 0x00};
44 /* Three letters translating to two utf-16 word each */
45 static const char d4[] = {0xf0, 0x90, 0x92, 0x8d, 0xf0, 0x90, 0x92, 0x96,
46 			  0xf0, 0x90, 0x92, 0x87, 0x00};
47 
48 /* Illegal utf-8 strings */
49 static const char j1[] = {0x6a, 0x31, 0xa1, 0x6c, 0x00};
50 static const char j2[] = {0x6a, 0x32, 0xc3, 0xc3, 0x6c, 0x00};
51 static const char j3[] = {0x6a, 0x33, 0xf0, 0x90, 0xf0, 0x00};
52 
53 /* U-Boot uses UTF-16 strings in the EFI context only. */
54 #if CONFIG_IS_ENABLED(EFI_LOADER) && !defined(API_BUILD)
55 static int ut_string16(struct unit_test_state *uts)
56 {
57 	char buf[20];
58 
59 	/* Test length and precision */
60 	memset(buf, 0xff, sizeof(buf));
61 	sprintf(buf, "%8.6ls", c2);
62 	ut_asserteq(' ', buf[1]);
63 	ut_assert(!strncmp(&buf[2], d2, 7));
64 	ut_assert(!buf[9]);
65 
66 	memset(buf, 0xff, sizeof(buf));
67 	sprintf(buf, "%8.6ls", c4);
68 	ut_asserteq(' ', buf[4]);
69 	ut_assert(!strncmp(&buf[5], d4, 12));
70 	ut_assert(!buf[17]);
71 
72 	memset(buf, 0xff, sizeof(buf));
73 	sprintf(buf, "%-8.2ls", c4);
74 	ut_asserteq(' ', buf[8]);
75 	ut_assert(!strncmp(buf, d4, 8));
76 	ut_assert(!buf[14]);
77 
78 	/* Test handling of illegal utf-16 sequences */
79 	memset(buf, 0xff, sizeof(buf));
80 	sprintf(buf, "%ls", i1);
81 	ut_asserteq_str("i1?l", buf);
82 
83 	memset(buf, 0xff, sizeof(buf));
84 	sprintf(buf, "%ls", i2);
85 	ut_asserteq_str("i2?l", buf);
86 
87 	memset(buf, 0xff, sizeof(buf));
88 	sprintf(buf, "%ls", i3);
89 	ut_asserteq_str("i3?", buf);
90 
91 	return 0;
92 }
93 UNICODE_TEST(ut_string16);
94 #endif
95 
96 static int ut_utf8_get(struct unit_test_state *uts)
97 {
98 	const char *s;
99 	s32 code;
100 	int i;
101 
102 	/* Check characters less than 0x800 */
103 	s = d2;
104 	for (i = 0; i < 8; ++i) {
105 		code = utf8_get((const char **)&s);
106 		/* c2 is the utf-8 encoding of d2 */
107 		ut_asserteq(c2[i], code);
108 		if (!code)
109 			break;
110 	}
111 	ut_asserteq_ptr(s, d2 + 9)
112 
113 	/* Check characters less than 0x10000 */
114 	s = d3;
115 	for (i = 0; i < 4; ++i) {
116 		code = utf8_get((const char **)&s);
117 		/* c3 is the utf-8 encoding of d3 */
118 		ut_asserteq(c3[i], code);
119 		if (!code)
120 			break;
121 	}
122 	ut_asserteq_ptr(s, d3 + 9)
123 
124 	/* Check character greater 0xffff */
125 	s = d4;
126 	code = utf8_get((const char **)&s);
127 	ut_asserteq(0x0001048d, code);
128 	ut_asserteq_ptr(s, d4 + 4);
129 
130 	return 0;
131 }
132 UNICODE_TEST(ut_utf8_get);
133 
134 static int ut_utf8_put(struct unit_test_state *uts)
135 {
136 	char buffer[8] = { 0, };
137 	char *pos;
138 
139 	/* Commercial at, translates to one character */
140 	pos = buffer;
141 	ut_assert(!utf8_put('@', &pos))
142 	ut_asserteq(1, pos - buffer);
143 	ut_asserteq('@', buffer[0]);
144 	ut_assert(!buffer[1]);
145 
146 	/* Latin letter G with acute, translates to two charactes */
147 	pos = buffer;
148 	ut_assert(!utf8_put(0x1f4, &pos));
149 	ut_asserteq(2, pos - buffer);
150 	ut_asserteq_str("\xc7\xb4", buffer);
151 
152 	/* Tagalog letter i, translates to three characters */
153 	pos = buffer;
154 	ut_assert(!utf8_put(0x1701, &pos));
155 	ut_asserteq(3, pos - buffer);
156 	ut_asserteq_str("\xe1\x9c\x81", buffer);
157 
158 	/* Hamster face, translates to four characters */
159 	pos = buffer;
160 	ut_assert(!utf8_put(0x1f439, &pos));
161 	ut_asserteq(4, pos - buffer);
162 	ut_asserteq_str("\xf0\x9f\x90\xb9", buffer);
163 
164 	/* Illegal code */
165 	pos = buffer;
166 	ut_asserteq(-1, utf8_put(0xd888, &pos));
167 
168 	return 0;
169 }
170 UNICODE_TEST(ut_utf8_put);
171 
172 static int ut_utf8_utf16_strlen(struct unit_test_state *uts)
173 {
174 	ut_asserteq(6, utf8_utf16_strlen(d1));
175 	ut_asserteq(8, utf8_utf16_strlen(d2));
176 	ut_asserteq(3, utf8_utf16_strlen(d3));
177 	ut_asserteq(6, utf8_utf16_strlen(d4));
178 
179 	/* illegal utf-8 sequences */
180 	ut_asserteq(4, utf8_utf16_strlen(j1));
181 	ut_asserteq(5, utf8_utf16_strlen(j2));
182 	ut_asserteq(3, utf8_utf16_strlen(j3));
183 
184 	return 0;
185 }
186 UNICODE_TEST(ut_utf8_utf16_strlen);
187 
188 static int ut_utf8_utf16_strnlen(struct unit_test_state *uts)
189 {
190 	ut_asserteq(3, utf8_utf16_strnlen(d1, 3));
191 	ut_asserteq(6, utf8_utf16_strnlen(d1, 13));
192 	ut_asserteq(6, utf8_utf16_strnlen(d2, 6));
193 	ut_asserteq(2, utf8_utf16_strnlen(d3, 2));
194 	ut_asserteq(4, utf8_utf16_strnlen(d4, 2));
195 	ut_asserteq(6, utf8_utf16_strnlen(d4, 3));
196 
197 	/* illegal utf-8 sequences */
198 	ut_asserteq(4, utf8_utf16_strnlen(j1, 16));
199 	ut_asserteq(5, utf8_utf16_strnlen(j2, 16));
200 	ut_asserteq(3, utf8_utf16_strnlen(j3, 16));
201 
202 	return 0;
203 }
204 UNICODE_TEST(ut_utf8_utf16_strnlen);
205 
206 /**
207  * ut_u16_strcmp() - Compare to u16 strings.
208  *
209  * @a1:		first string
210  * @a2:		second string
211  * @count:	number of u16 to compare
212  * Return:	-1 if a1 < a2, 0 if a1 == a2, 1 if a1 > a2
213  */
214 static int ut_u16_strcmp(const u16 *a1, const u16 *a2, size_t count)
215 {
216 	for (; (*a1 || *a2) && count; ++a1, ++a2, --count) {
217 		if (*a1 < *a2)
218 			return -1;
219 		if (*a1 > *a2)
220 			return 1;
221 	}
222 	return 0;
223 }
224 
225 static int ut_utf8_utf16_strcpy(struct unit_test_state *uts)
226 {
227 	u16 buf[16];
228 	u16 *pos;
229 
230 	pos = buf;
231 	utf8_utf16_strcpy(&pos, d1);
232 	ut_asserteq(6, pos - buf);
233 	ut_assert(!ut_u16_strcmp(buf, c1, SIZE_MAX));
234 
235 	pos = buf;
236 	utf8_utf16_strcpy(&pos, d2);
237 	ut_asserteq(8, pos - buf);
238 	ut_assert(!ut_u16_strcmp(buf, c2, SIZE_MAX));
239 
240 	pos = buf;
241 	utf8_utf16_strcpy(&pos, d3);
242 	ut_asserteq(3, pos - buf);
243 	ut_assert(!ut_u16_strcmp(buf, c3, SIZE_MAX));
244 
245 	pos = buf;
246 	utf8_utf16_strcpy(&pos, d4);
247 	ut_asserteq(6, pos - buf);
248 	ut_assert(!ut_u16_strcmp(buf, c4, SIZE_MAX));
249 
250 	/* Illegal utf-8 strings */
251 	pos = buf;
252 	utf8_utf16_strcpy(&pos, j1);
253 	ut_asserteq(4, pos - buf);
254 	ut_assert(!ut_u16_strcmp(buf, L"j1?l", SIZE_MAX));
255 
256 	pos = buf;
257 	utf8_utf16_strcpy(&pos, j2);
258 	ut_asserteq(5, pos - buf);
259 	ut_assert(!ut_u16_strcmp(buf, L"j2??l", SIZE_MAX));
260 
261 	pos = buf;
262 	utf8_utf16_strcpy(&pos, j3);
263 	ut_asserteq(3, pos - buf);
264 	ut_assert(!ut_u16_strcmp(buf, L"j3?", SIZE_MAX));
265 
266 	return 0;
267 }
268 UNICODE_TEST(ut_utf8_utf16_strcpy);
269 
270 int ut_utf8_utf16_strncpy(struct unit_test_state *uts)
271 {
272 	u16 buf[16];
273 	u16 *pos;
274 
275 	pos = buf;
276 	memset(buf, 0, sizeof(buf));
277 	utf8_utf16_strncpy(&pos, d1, 4);
278 	ut_asserteq(4, pos - buf);
279 	ut_assert(!buf[4]);
280 	ut_assert(!ut_u16_strcmp(buf, c1, 4));
281 
282 	pos = buf;
283 	memset(buf, 0, sizeof(buf));
284 	utf8_utf16_strncpy(&pos, d2, 10);
285 	ut_asserteq(8, pos - buf);
286 	ut_assert(buf[4]);
287 	ut_assert(!ut_u16_strcmp(buf, c2, SIZE_MAX));
288 
289 	pos = buf;
290 	memset(buf, 0, sizeof(buf));
291 	utf8_utf16_strncpy(&pos, d3, 2);
292 	ut_asserteq(2, pos - buf);
293 	ut_assert(!buf[2]);
294 	ut_assert(!ut_u16_strcmp(buf, c3, 2));
295 
296 	pos = buf;
297 	memset(buf, 0, sizeof(buf));
298 	utf8_utf16_strncpy(&pos, d4, 2);
299 	ut_asserteq(4, pos - buf);
300 	ut_assert(!buf[4]);
301 	ut_assert(!ut_u16_strcmp(buf, c4, 4));
302 
303 	pos = buf;
304 	memset(buf, 0, sizeof(buf));
305 	utf8_utf16_strncpy(&pos, d4, 10);
306 	ut_asserteq(6, pos - buf);
307 	ut_assert(buf[5]);
308 	ut_assert(!ut_u16_strcmp(buf, c4, SIZE_MAX));
309 
310 	return 0;
311 }
312 UNICODE_TEST(ut_utf8_utf16_strncpy);
313 
314 static int ut_utf16_get(struct unit_test_state *uts)
315 {
316 	const u16 *s;
317 	s32 code;
318 	int i;
319 
320 	/* Check characters less than 0x10000 */
321 	s = c2;
322 	for (i = 0; i < 9; ++i) {
323 		code = utf16_get((const u16 **)&s);
324 		ut_asserteq(c2[i], code);
325 		if (!code)
326 			break;
327 	}
328 	ut_asserteq_ptr(c2 + 8, s);
329 
330 	/* Check character greater 0xffff */
331 	s = c4;
332 	code = utf16_get((const u16 **)&s);
333 	ut_asserteq(0x0001048d, code);
334 	ut_asserteq_ptr(c4 + 2, s);
335 
336 	return 0;
337 }
338 UNICODE_TEST(ut_utf16_get);
339 
340 static int ut_utf16_put(struct unit_test_state *uts)
341 {
342 	u16 buffer[4] = { 0, };
343 	u16 *pos;
344 
345 	/* Commercial at, translates to one word */
346 	pos = buffer;
347 	ut_assert(!utf16_put('@', &pos));
348 	ut_asserteq(1, pos - buffer);
349 	ut_asserteq((u16)'@', buffer[0]);
350 	ut_assert(!buffer[1]);
351 
352 	/* Hamster face, translates to two words */
353 	pos = buffer;
354 	ut_assert(!utf16_put(0x1f439, &pos));
355 	ut_asserteq(2, pos - buffer);
356 	ut_asserteq((u16)0xd83d, buffer[0]);
357 	ut_asserteq((u16)0xdc39, buffer[1]);
358 	ut_assert(!buffer[2]);
359 
360 	/* Illegal code */
361 	pos = buffer;
362 	ut_asserteq(-1, utf16_put(0xd888, &pos));
363 
364 	return 0;
365 }
366 UNICODE_TEST(ut_utf16_put);
367 
368 int ut_utf16_strnlen(struct unit_test_state *uts)
369 {
370 	ut_asserteq(3, utf16_strnlen(c1, 3));
371 	ut_asserteq(6, utf16_strnlen(c1, 13));
372 	ut_asserteq(6, utf16_strnlen(c2, 6));
373 	ut_asserteq(2, utf16_strnlen(c3, 2));
374 	ut_asserteq(2, utf16_strnlen(c4, 2));
375 	ut_asserteq(3, utf16_strnlen(c4, 3));
376 
377 	/* illegal utf-16 word sequences */
378 	ut_asserteq(4, utf16_strnlen(i1, 16));
379 	ut_asserteq(4, utf16_strnlen(i2, 16));
380 	ut_asserteq(3, utf16_strnlen(i3, 16));
381 
382 	return 0;
383 }
384 UNICODE_TEST(ut_utf16_strnlen);
385 
386 int ut_utf16_utf8_strlen(struct unit_test_state *uts)
387 {
388 	ut_asserteq(6, utf16_utf8_strlen(c1));
389 	ut_asserteq(9, utf16_utf8_strlen(c2));
390 	ut_asserteq(9, utf16_utf8_strlen(c3));
391 	ut_asserteq(12, utf16_utf8_strlen(c4));
392 
393 	/* illegal utf-16 word sequences */
394 	ut_asserteq(4, utf16_utf8_strlen(i1));
395 	ut_asserteq(4, utf16_utf8_strlen(i2));
396 	ut_asserteq(3, utf16_utf8_strlen(i3));
397 
398 	return 0;
399 }
400 UNICODE_TEST(ut_utf16_utf8_strlen);
401 
402 int ut_utf16_utf8_strnlen(struct unit_test_state *uts)
403 {
404 	ut_asserteq(3, utf16_utf8_strnlen(c1, 3));
405 	ut_asserteq(6, utf16_utf8_strnlen(c1, 13));
406 	ut_asserteq(7, utf16_utf8_strnlen(c2, 6));
407 	ut_asserteq(6, utf16_utf8_strnlen(c3, 2));
408 	ut_asserteq(8, utf16_utf8_strnlen(c4, 2));
409 	ut_asserteq(12, utf16_utf8_strnlen(c4, 3));
410 	return 0;
411 }
412 UNICODE_TEST(ut_utf16_utf8_strnlen);
413 
414 int ut_utf16_utf8_strcpy(struct unit_test_state *uts)
415 {
416 	char buf[16];
417 	char *pos;
418 
419 	pos = buf;
420 	utf16_utf8_strcpy(&pos, c1);
421 	ut_asserteq(6, pos - buf);
422 	ut_asserteq_str(d1, buf);
423 
424 	pos = buf;
425 	utf16_utf8_strcpy(&pos, c2);
426 	ut_asserteq(9, pos - buf);
427 	ut_asserteq_str(d2, buf);
428 
429 	pos = buf;
430 	utf16_utf8_strcpy(&pos, c3);
431 	ut_asserteq(9, pos - buf);
432 	ut_asserteq_str(d3, buf);
433 
434 	pos = buf;
435 	utf16_utf8_strcpy(&pos, c4);
436 	ut_asserteq(12, pos - buf);
437 	ut_asserteq_str(d4, buf);
438 
439 	/* Illegal utf-16 strings */
440 	pos = buf;
441 	utf16_utf8_strcpy(&pos, i1);
442 	ut_asserteq(4, pos - buf);
443 	ut_asserteq_str("i1?l", buf);
444 
445 	pos = buf;
446 	utf16_utf8_strcpy(&pos, i2);
447 	ut_asserteq(4, pos - buf);
448 	ut_asserteq_str("i2?l", buf);
449 
450 	pos = buf;
451 	utf16_utf8_strcpy(&pos, i3);
452 	ut_asserteq(3, pos - buf);
453 	ut_asserteq_str("i3?", buf);
454 
455 	return 0;
456 }
457 UNICODE_TEST(ut_utf16_utf8_strcpy);
458 
459 int ut_utf16_utf8_strncpy(struct unit_test_state *uts)
460 {
461 	char buf[16];
462 	char *pos;
463 
464 	pos = buf;
465 	memset(buf, 0, sizeof(buf));
466 	utf16_utf8_strncpy(&pos, c1, 4);
467 	ut_asserteq(4, pos - buf);
468 	ut_assert(!buf[4]);
469 	ut_assert(!strncmp(buf, d1, 4));
470 
471 	pos = buf;
472 	memset(buf, 0, sizeof(buf));
473 	utf16_utf8_strncpy(&pos, c2, 10);
474 	ut_asserteq(9, pos - buf);
475 	ut_assert(buf[4]);
476 	ut_assert(!strncmp(buf, d2, SIZE_MAX));
477 
478 	pos = buf;
479 	memset(buf, 0, sizeof(buf));
480 	utf16_utf8_strncpy(&pos, c3, 2);
481 	ut_asserteq(6, pos - buf);
482 	ut_assert(!buf[6]);
483 	ut_assert(!strncmp(buf, d3, 6));
484 
485 	pos = buf;
486 	memset(buf, 0, sizeof(buf));
487 	utf16_utf8_strncpy(&pos, c4, 2);
488 	ut_asserteq(8, pos - buf);
489 	ut_assert(!buf[8]);
490 	ut_assert(!strncmp(buf, d4, 8));
491 
492 	pos = buf;
493 	memset(buf, 0, sizeof(buf));
494 	utf16_utf8_strncpy(&pos, c4, 10);
495 	ut_asserteq(12, pos - buf);
496 	ut_assert(buf[5]);
497 	ut_assert(!strncmp(buf, d4, SIZE_MAX));
498 
499 	return 0;
500 }
501 UNICODE_TEST(ut_utf16_utf8_strncpy);
502 
503 int do_ut_unicode(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[])
504 {
505 	struct unit_test *tests = ll_entry_start(struct unit_test, unicode_test);
506 	const int n_ents = ll_entry_count(struct unit_test, unicode_test);
507 
508 	return cmd_ut_category("Unicode", tests, n_ents, argc, argv);
509 }
510