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Update brotli to version 1.0.9

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This commit is contained in:
Tino Reichardt
2020-10-03 09:47:47 +02:00
parent 712b2f1b20
commit 32e6390fd7
64 changed files with 4074 additions and 2528 deletions
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62
C/brotli/br_transform.c
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@@ -24,8 +24,8 @@ static const char kPrefixSuffix[217] =
/* 8x _0 _ _3 _8 _C _E _ _1 _7 _F */
" not \3er \3al \4ful \4ive \5less \4es"
/* Ax _5 _9 _D _2 _7 _D */
"t \4ize \2\xc2\xa0\4ous \5 the \2e \0";
/* Cx _2 _7___ ___ _A _F _5 _8 */
"t \4ize \2\xc2\xa0\4ous \5 the \2e "; /* \0 - implicit trailing zero. */
/* Cx _2 _7___ ___ _A _F _5 _8 */
static const uint16_t kPrefixSuffixMap[50] = {
0x00, 0x02, 0x05, 0x0E, 0x13, 0x16, 0x18, 0x1E, 0x23, 0x25,
@@ -160,12 +160,13 @@ static const uint8_t kTransformsData[] = {
0, BROTLI_TRANSFORM_UPPERCASE_FIRST, 34,
};
static BrotliTransforms kBrotliTransforms = {
static const BrotliTransforms kBrotliTransforms = {
sizeof(kPrefixSuffix),
(const uint8_t*)kPrefixSuffix,
kPrefixSuffixMap,
sizeof(kTransformsData) / (3 * sizeof(kTransformsData[0])),
kTransformsData,
NULL, /* no extra parameters */
{0, 12, 27, 23, 42, 63, 56, 48, 59, 64}
};
@@ -190,6 +191,48 @@ static int ToUpperCase(uint8_t* p) {
return 3;
}
static int Shift(uint8_t* word, int word_len, uint16_t parameter) {
/* Limited sign extension: scalar < (1 << 24). */
uint32_t scalar =
(parameter & 0x7FFFu) + (0x1000000u - (parameter & 0x8000u));
if (word[0] < 0x80) {
/* 1-byte rune / 0sssssss / 7 bit scalar (ASCII). */
scalar += (uint32_t)word[0];
word[0] = (uint8_t)(scalar & 0x7Fu);
return 1;
} else if (word[0] < 0xC0) {
/* Continuation / 10AAAAAA. */
return 1;
} else if (word[0] < 0xE0) {
/* 2-byte rune / 110sssss AAssssss / 11 bit scalar. */
if (word_len < 2) return 1;
scalar += (uint32_t)((word[1] & 0x3Fu) | ((word[0] & 0x1Fu) << 6u));
word[0] = (uint8_t)(0xC0 | ((scalar >> 6u) & 0x1F));
word[1] = (uint8_t)((word[1] & 0xC0) | (scalar & 0x3F));
return 2;
} else if (word[0] < 0xF0) {
/* 3-byte rune / 1110ssss AAssssss BBssssss / 16 bit scalar. */
if (word_len < 3) return word_len;
scalar += (uint32_t)((word[2] & 0x3Fu) | ((word[1] & 0x3Fu) << 6u) |
((word[0] & 0x0Fu) << 12u));
word[0] = (uint8_t)(0xE0 | ((scalar >> 12u) & 0x0F));
word[1] = (uint8_t)((word[1] & 0xC0) | ((scalar >> 6u) & 0x3F));
word[2] = (uint8_t)((word[2] & 0xC0) | (scalar & 0x3F));
return 3;
} else if (word[0] < 0xF8) {
/* 4-byte rune / 11110sss AAssssss BBssssss CCssssss / 21 bit scalar. */
if (word_len < 4) return word_len;
scalar += (uint32_t)((word[3] & 0x3Fu) | ((word[2] & 0x3Fu) << 6u) |
((word[1] & 0x3Fu) << 12u) | ((word[0] & 0x07u) << 18u));
word[0] = (uint8_t)(0xF0 | ((scalar >> 18u) & 0x07));
word[1] = (uint8_t)((word[1] & 0xC0) | ((scalar >> 12u) & 0x3F));
word[2] = (uint8_t)((word[2] & 0xC0) | ((scalar >> 6u) & 0x3F));
word[3] = (uint8_t)((word[3] & 0xC0) | (scalar & 0x3F));
return 4;
}
return 1;
}
int BrotliTransformDictionaryWord(uint8_t* dst, const uint8_t* word, int len,
const BrotliTransforms* transforms, int transform_idx) {
int idx = 0;
@@ -221,6 +264,19 @@ int BrotliTransformDictionaryWord(uint8_t* dst, const uint8_t* word, int len,
uppercase += step;
len -= step;
}
} else if (t == BROTLI_TRANSFORM_SHIFT_FIRST) {
uint16_t param = (uint16_t)(transforms->params[transform_idx * 2]
+ (transforms->params[transform_idx * 2 + 1] << 8u));
Shift(&dst[idx - len], len, param);
} else if (t == BROTLI_TRANSFORM_SHIFT_ALL) {
uint16_t param = (uint16_t)(transforms->params[transform_idx * 2]
+ (transforms->params[transform_idx * 2 + 1] << 8u));
uint8_t* shift = &dst[idx - len];
while (len > 0) {
int step = Shift(shift, len, param);
shift += step;
len -= step;
}
}
}
{