static void
test_c32(TestBatch *batch) {
uint64_t mins[] = { 0, 0x4000 - 100, (uint32_t)I32_MAX - 100, U32_MAX - 10 };
uint64_t limits[] = { 500, 0x4000 + 100, (uint32_t)I32_MAX + 100, U32_MAX };
uint32_t set_num;
uint32_t num_sets = sizeof(mins) / sizeof(uint64_t);
size_t count = 64;
uint64_t *ints = NULL;
size_t amount = count * C32_MAX_BYTES;
char *encoded = (char*)CALLOCATE(amount, sizeof(char));
char *target = encoded;
char *limit = target + amount;
for (set_num = 0; set_num < num_sets; set_num++) {
char *skip;
ints = TestUtils_random_u64s(ints, count,
mins[set_num], limits[set_num]);
target = encoded;
for (size_t i = 0; i < count; i++) {
NumUtil_encode_c32((uint32_t)ints[i], &target);
}
target = encoded;
skip = encoded;
for (size_t i = 0; i < count; i++) {
TEST_INT_EQ(batch, NumUtil_decode_c32(&target), (long)ints[i],
"c32 %lu", (long)ints[i]);
NumUtil_skip_cint(&skip);
if (target > limit) { THROW(ERR, "overrun"); }
}
TEST_TRUE(batch, skip == target, "skip %lu == %lu",
(unsigned long)skip, (unsigned long)target);
target = encoded;
for (size_t i = 0; i < count; i++) {
NumUtil_encode_padded_c32((uint32_t)ints[i], &target);
}
TEST_TRUE(batch, target == limit,
"padded c32 uses 5 bytes (%lu == %lu)", (unsigned long)target,
(unsigned long)limit);
target = encoded;
skip = encoded;
for (size_t i = 0; i < count; i++) {
TEST_INT_EQ(batch, NumUtil_decode_c32(&target), (long)ints[i],
"padded c32 %lu", (long)ints[i]);
NumUtil_skip_cint(&skip);
if (target > limit) { THROW(ERR, "overrun"); }
}
TEST_TRUE(batch, skip == target, "skip padded %lu == %lu",
(unsigned long)skip, (unsigned long)target);
}
target = encoded;
NumUtil_encode_c32(U32_MAX, &target);
target = encoded;
TEST_INT_EQ(batch, NumUtil_decode_c32(&target), U32_MAX, "c32 U32_MAX");
FREEMEM(encoded);
FREEMEM(ints);
}
static TermVector*
S_extract_tv_from_tv_buf(String *field, String *term_text,
ByteBuf *tv_buf) {
TermVector *retval = NULL;
const char *posdata = BB_Get_Buf(tv_buf);
const char *posdata_end = posdata + BB_Get_Size(tv_buf);
int32_t *positions = NULL;
int32_t *starts = NULL;
int32_t *ends = NULL;
uint32_t num_pos = 0;
if (posdata != posdata_end) {
num_pos = NumUtil_decode_c32(&posdata);
positions = (int32_t*)MALLOCATE(num_pos * sizeof(int32_t));
starts = (int32_t*)MALLOCATE(num_pos * sizeof(int32_t));
ends = (int32_t*)MALLOCATE(num_pos * sizeof(int32_t));
}
// Expand C32s.
for (uint32_t i = 0; i < num_pos; i++) {
positions[i] = NumUtil_decode_c32(&posdata);
starts[i] = NumUtil_decode_c32(&posdata);
ends[i] = NumUtil_decode_c32(&posdata);
}
if (posdata != posdata_end) {
THROW(ERR, "Bad encoding of posdata");
}
else {
I32Array *posits_map = I32Arr_new_steal(positions, num_pos);
I32Array *starts_map = I32Arr_new_steal(starts, num_pos);
I32Array *ends_map = I32Arr_new_steal(ends, num_pos);
retval = TV_new(field, term_text, posits_map, starts_map, ends_map);
DECREF(posits_map);
DECREF(starts_map);
DECREF(ends_map);
}
return retval;
}
void
ScorePost_Read_Record_IMP(ScorePosting *self, InStream *instream) {
ScorePostingIVARS *const ivars = ScorePost_IVARS(self);
uint32_t position = 0;
const size_t max_start_bytes = (C32_MAX_BYTES * 2) + 1;
const char *buf = InStream_Buf(instream, max_start_bytes);
const uint32_t doc_code = NumUtil_decode_c32(&buf);
const uint32_t doc_delta = doc_code >> 1;
// Apply delta doc and retrieve freq.
ivars->doc_id += doc_delta;
if (doc_code & 1) {
ivars->freq = 1;
}
else {
ivars->freq = NumUtil_decode_c32(&buf);
}
// Decode boost/norm byte.
ivars->weight = ivars->norm_decoder[*(uint8_t*)buf];
buf++;
// Read positions.
uint32_t num_prox = ivars->freq;
if (num_prox > ivars->prox_cap) {
ivars->prox = (uint32_t*)REALLOCATE(
ivars->prox, num_prox * sizeof(uint32_t));
ivars->prox_cap = num_prox;
}
uint32_t *positions = ivars->prox;
InStream_Advance_Buf(instream, buf);
buf = InStream_Buf(instream, num_prox * C32_MAX_BYTES);
while (num_prox--) {
position += NumUtil_decode_c32(&buf);
*positions++ = position;
}
InStream_Advance_Buf(instream, buf);
}
static Hash*
S_extract_tv_cache(ByteBuf *field_buf) {
Hash *tv_cache = Hash_new(0);
const char *tv_string = BB_Get_Buf(field_buf);
int32_t num_terms = NumUtil_decode_c32(&tv_string);
CharBuf *text_buf = CB_new(0);
// Read the number of highlightable terms in the field.
for (int32_t i = 0; i < num_terms; i++) {
size_t overlap = NumUtil_decode_c32(&tv_string);
size_t len = NumUtil_decode_c32(&tv_string);
// Decompress the term text.
CB_Set_Size(text_buf, overlap);
CB_Cat_Trusted_Utf8(text_buf, tv_string, len);
tv_string += len;
// Get positions & offsets string.
const char *bookmark_ptr = tv_string;
int32_t num_positions = NumUtil_decode_c32(&tv_string);
while (num_positions--) {
// Leave nums compressed to save a little mem.
NumUtil_skip_cint(&tv_string);
NumUtil_skip_cint(&tv_string);
NumUtil_skip_cint(&tv_string);
}
len = tv_string - bookmark_ptr;
// Store the $text => $posdata pair in the output hash.
String *text = CB_To_String(text_buf);
Hash_Store(tv_cache, (Obj*)text,
(Obj*)BB_new_bytes(bookmark_ptr, len));
DECREF(text);
}
DECREF(text_buf);
return tv_cache;
}