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	character.c - libgrapheme - unicode string library
	git clone git://git.suckless.org/libgrapheme
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	character.c (1991B)
	---
	1 /* See LICENSE file for copyright and license details. */
	2 #include <errno.h>
	3 #include <math.h>
	4 #include <stdint.h>
	5 #include <stdio.h>
	6 #include <stdlib.h>
	7 #include <string.h>
	8
	9 #include "../gen/character-test.h"
	10 #include "../grapheme.h"
	11 #include "util.h"
	12
	13 #include <utf8proc.h>
	14
	15 #define NUM_ITERATIONS 100000
	16
	17 struct break_benchmark_payload {
	18 uint_least32_t *buf;
	19 utf8proc_int32_t *buf_utf8proc;
	20 size_t buflen;
	21 };
	22
	23 void
	24 libgrapheme(const void *payload)
	25 {
	26 uint_least16_t state = 0;
	27 const struct break_benchmark_payload *p = payload;
	28 size_t i;
	29
	30 for (i = 0; i + 1 < p->buflen; i++) {
	31 (void)grapheme_is_character_break(p->buf[i], p->buf[i + …
	32 &state);
	33 }
	34 }
	35
	36 void
	37 libutf8proc(const void *payload)
	38 {
	39 utf8proc_int32_t state = 0;
	40 const struct break_benchmark_payload *p = payload;
	41 size_t i;
	42
	43 for (i = 0; i + 1 < p->buflen; i++) {
	44 (void)utf8proc_grapheme_break_stateful(
	45 p->buf_utf8proc[i], p->buf_utf8proc[i + 1], &sta…
	46 }
	47 }
	48
	49 int
	50 main(int argc, char *argv[])
	51 {
	52 struct break_benchmark_payload p;
	53 double baseline = (double)NAN;
	54 size_t i;
	55
	56 (void)argc;
	57
	58 if ((p.buf = generate_cp_test_buffer(character_break_test,
	59 LEN(character_break_test),
	60 &(p.buflen))) == NULL) {
	61 return 1;
	62 }
	63 if ((p.buf_utf8proc = malloc(p.buflen * sizeof(*(p.buf_utf8proc)…
	64 NULL) {
	65 fprintf(stderr, "malloc: %s\n", strerror(errno));
	66 exit(1);
	67 }
	68 for (i = 0; i < p.buflen; i++) {
	69 /*
	70 * there is no overflow, as we know that the maximum
	71 * codepoint is 0x10FFFF, which is way below 2^31
	72 */
	73 p.buf_utf8proc[i] = (utf8proc_int32_t)p.buf[i];
	74 }
	75
	76 printf("%s\n", argv[0]);
	77 run_benchmark(libgrapheme, &p, "libgrapheme ", NULL, "comparison…
	78 &baseline, NUM_ITERATIONS, p.buflen - 1);
	79 run_benchmark(libutf8proc, &p, "libutf8proc ", NULL, "comparison…
	80 &baseline, NUM_ITERATIONS, p.buflen - 1);
	81
	82 free(p.buf);
	83 free(p.buf_utf8proc);
	84
	85 return 0;
	86 }