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#include <string.h>
#include <assert.h>
#include <stdio.h>
#include <stdlib.h>
#include "../creole.c"
#if 0
struct seq {
creole_word max;
unsigned encode_to;
unsigned high_bits;
unsigned char minbuf[7];
unsigned char maxbuf[7];
};
void bprint(unsigned char c) {
int i;
for (i = 0; i < 8; i++) {
printf("%u", (c >> (7 - i)) & 1);
}
}
void bprintb(unsigned char *b, int len) {
while (len-- > 0) {
bprint(*b++);
printf(" ");
}
}
static void encode_byte_seq(struct seq *s) {
creole_word i = 0;
int j;
unsigned char buf[7];
for (;;) {
assert(creole_encode(i, s->encode_to, s->high_bits,
buf) == 1);
if (memcmp(s->minbuf, buf, s->encode_to) != 0) {
printf("0x%X ", i);
bprintb(s->minbuf, s->encode_to);
printf("|");
bprintb(buf, s->encode_to);
printf("\n");
abort();
}
if (i == s->max)
break;
i++;
for (j = s->encode_to - 1; j > 0; j--) {
if (s->minbuf[j] == 0xBF) {
s->minbuf[j] = 0x80;
} else {
s->minbuf[j]++;
break;
}
}
if (j == 0)
s->minbuf[0]++;
}
assert(memcmp(s->maxbuf, s->minbuf, s->encode_to) == 0);
}
static void encode_1(void) {
struct seq s;
s.max = 0x7F;
s.encode_to = 1;
s.high_bits = 0;
s.minbuf[0] = 0x00;
s.maxbuf[0] = 0x7F;
encode_byte_seq(&s);
}
static void encode_2(unsigned high_bits) {
struct seq s;
s.high_bits = high_bits;
memset(s.maxbuf, 0xBF, sizeof(s.maxbuf));
memset(s.minbuf, 0x80, sizeof(s.minbuf));
s.max = 0x7F;
s.encode_to = 2;
s.maxbuf[0] = s.minbuf[0] = 0xC0 | (high_bits << 1);
s.maxbuf[0] = 0xC1 | (high_bits << 1);
s.minbuf[1] = 0x80;
encode_byte_seq(&s);
}
static void encode_3(unsigned high_bits) {
struct seq s;
s.high_bits = high_bits;
memset(s.maxbuf, 0xBF, sizeof(s.maxbuf));
memset(s.minbuf, 0x80, sizeof(s.minbuf));
s.max = 0xFFF;
s.encode_to = 3;
s.minbuf[0] = 0xE0 | high_bits;
s.maxbuf[0] = 0xE0 | high_bits;
s.minbuf[1] = 0x80;
encode_byte_seq(&s);
}
static void encode_4(unsigned high_bits) {
struct seq s;
s.high_bits = high_bits;
memset(s.maxbuf, 0xBF, sizeof(s.maxbuf));
memset(s.minbuf, 0x80, sizeof(s.minbuf));
s.max = 0x1FFFF;
s.encode_to = 4;
s.maxbuf[0] = s.minbuf[0] = 0xF0 | (high_bits >> 1);
s.minbuf[1] = 0x80 | ((high_bits & 0x1) << 5);
s.maxbuf[1] = 0x9F | ((high_bits & 0x1) << 5);
encode_byte_seq(&s);
}
static void encode_5(unsigned high_bits) {
struct seq s;
s.high_bits = high_bits;
memset(s.maxbuf, 0xBF, sizeof(s.maxbuf));
memset(s.minbuf, 0x80, sizeof(s.minbuf));
s.max = 0x3FFFFF;
s.encode_to = 5;
s.maxbuf[0] = s.minbuf[0] = 0xF8 | (high_bits >> 2);
s.minbuf[1] = 0x80 | ((high_bits & 0x3) << 4);
s.maxbuf[1] = 0x8F | ((high_bits & 0x3) << 4);
encode_byte_seq(&s);
}
static void encode_6(unsigned high_bits) {
struct seq s;
s.high_bits = high_bits;
memset(s.maxbuf, 0xBF, sizeof(s.maxbuf));
memset(s.minbuf, 0x80, sizeof(s.minbuf));
s.max = 0x7FFFFFF;
s.encode_to = 6;
s.maxbuf[0] = s.minbuf[0] = 0xFC | (high_bits >> 3);
s.minbuf[1] = 0x80 | ((high_bits & 0x7) << 3);
s.maxbuf[1] = 0x87 | ((high_bits & 0x7) << 3);
encode_byte_seq(&s);
}
static void encode_7(unsigned high_bits) {
struct seq s;
s.high_bits = high_bits;
memset(s.maxbuf, 0xBF, sizeof(s.maxbuf));
memset(s.minbuf, 0x80, sizeof(s.minbuf));
s.max = 0xFFFFFFFF;
s.encode_to = 7;
s.maxbuf[0] = s.minbuf[0] = 0xFE;
s.minbuf[1] = 0x80 | (high_bits << 2);
s.maxbuf[1] = 0x83 | (high_bits << 2);
encode_byte_seq(&s);
}
static void test_encode(void) {
void (*tests[6])(unsigned) = {encode_2, encode_3, encode_4, encode_5, encode_6, encode_7};
unsigned high_bits;
unsigned test;
encode_1();
# pragma omp parallel for collapse(2) num_threads(8)
for (high_bits = 0; high_bits < 16; high_bits++) {
for (test = 0; test < 6; test++)
tests[test](high_bits);
}
}
#endif
void encode_decode_byte_seq(creole_word max, unsigned encode_to, unsigned high_bits) {
unsigned char buf[7];
struct creole_reader r = {0};
struct word w;
creole_word i = 0;
for (;;) {
r.p = buf;
r.left = encode_to;
assert(creole_encode(i, encode_to, high_bits,
buf) == 1);
assert(decode_seq(&r, &w) == 1);
assert(w.len == encode_to);
if (w.high_bits != high_bits) {
printf("high bits %u != %u\n", w.high_bits, high_bits);
abort();
}
if (w.word != i) {
printf("word %X != %X\n", w.word, i);
abort();
}
if (i == max)
break;
i++;
}
}
static void test_encode_decode(void) {
unsigned high_bits = 0;
int encode_len;
const creole_word maxima[6] = {0x7F, 0xFFF, 0x1FFFF, 0x3FFFFF, 0x7FFFFFF, 0xFFFFFFFF};
encode_decode_byte_seq(0x7F, 1, 0);
#pragma omp parallel for collapse(2) num_threads(8)
for (high_bits = 0; high_bits < 16; high_bits++) {
for (encode_len = 2; encode_len < 8; encode_len++)
encode_decode_byte_seq(maxima[encode_len - 2], encode_len, high_bits);
}
}
int main(void) {
printf("test encode\n");
test_encode_decode();
printf("finished\n");
return 0;
}
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