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-rw-r--r--deps/node/deps/brotli/c/enc/command.h190
1 files changed, 0 insertions, 190 deletions
diff --git a/deps/node/deps/brotli/c/enc/command.h b/deps/node/deps/brotli/c/enc/command.h
deleted file mode 100644
index 1aac8568..00000000
--- a/deps/node/deps/brotli/c/enc/command.h
+++ /dev/null
@@ -1,190 +0,0 @@
-/* Copyright 2013 Google Inc. All Rights Reserved.
-
- Distributed under MIT license.
- See file LICENSE for detail or copy at https://opensource.org/licenses/MIT
-*/
-
-/* This class models a sequence of literals and a backward reference copy. */
-
-#ifndef BROTLI_ENC_COMMAND_H_
-#define BROTLI_ENC_COMMAND_H_
-
-#include "../common/constants.h"
-#include "../common/platform.h"
-#include <brotli/types.h>
-#include "./fast_log.h"
-#include "./params.h"
-#include "./prefix.h"
-
-#if defined(__cplusplus) || defined(c_plusplus)
-extern "C" {
-#endif
-
-static uint32_t kInsBase[] = { 0, 1, 2, 3, 4, 5, 6, 8, 10, 14, 18, 26, 34, 50,
- 66, 98, 130, 194, 322, 578, 1090, 2114, 6210, 22594 };
-static uint32_t kInsExtra[] = { 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 3, 4, 4,
- 5, 5, 6, 7, 8, 9, 10, 12, 14, 24 };
-static uint32_t kCopyBase[] = { 2, 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 18, 22, 30,
- 38, 54, 70, 102, 134, 198, 326, 582, 1094, 2118 };
-static uint32_t kCopyExtra[] = { 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 2, 2, 3, 3,
- 4, 4, 5, 5, 6, 7, 8, 9, 10, 24 };
-
-static BROTLI_INLINE uint16_t GetInsertLengthCode(size_t insertlen) {
- if (insertlen < 6) {
- return (uint16_t)insertlen;
- } else if (insertlen < 130) {
- uint32_t nbits = Log2FloorNonZero(insertlen - 2) - 1u;
- return (uint16_t)((nbits << 1) + ((insertlen - 2) >> nbits) + 2);
- } else if (insertlen < 2114) {
- return (uint16_t)(Log2FloorNonZero(insertlen - 66) + 10);
- } else if (insertlen < 6210) {
- return 21u;
- } else if (insertlen < 22594) {
- return 22u;
- } else {
- return 23u;
- }
-}
-
-static BROTLI_INLINE uint16_t GetCopyLengthCode(size_t copylen) {
- if (copylen < 10) {
- return (uint16_t)(copylen - 2);
- } else if (copylen < 134) {
- uint32_t nbits = Log2FloorNonZero(copylen - 6) - 1u;
- return (uint16_t)((nbits << 1) + ((copylen - 6) >> nbits) + 4);
- } else if (copylen < 2118) {
- return (uint16_t)(Log2FloorNonZero(copylen - 70) + 12);
- } else {
- return 23u;
- }
-}
-
-static BROTLI_INLINE uint16_t CombineLengthCodes(
- uint16_t inscode, uint16_t copycode, BROTLI_BOOL use_last_distance) {
- uint16_t bits64 =
- (uint16_t)((copycode & 0x7u) | ((inscode & 0x7u) << 3u));
- if (use_last_distance && inscode < 8u && copycode < 16u) {
- return (copycode < 8u) ? bits64 : (bits64 | 64u);
- } else {
- /* Specification: 5 Encoding of ... (last table) */
- /* offset = 2 * index, where index is in range [0..8] */
- uint32_t offset = 2u * ((copycode >> 3u) + 3u * (inscode >> 3u));
- /* All values in specification are K * 64,
- where K = [2, 3, 6, 4, 5, 8, 7, 9, 10],
- i + 1 = [1, 2, 3, 4, 5, 6, 7, 8, 9],
- K - i - 1 = [1, 1, 3, 0, 0, 2, 0, 1, 2] = D.
- All values in D require only 2 bits to encode.
- Magic constant is shifted 6 bits left, to avoid final multiplication. */
- offset = (offset << 5u) + 0x40u + ((0x520D40u >> offset) & 0xC0u);
- return (uint16_t)(offset | bits64);
- }
-}
-
-static BROTLI_INLINE void GetLengthCode(size_t insertlen, size_t copylen,
- BROTLI_BOOL use_last_distance,
- uint16_t* code) {
- uint16_t inscode = GetInsertLengthCode(insertlen);
- uint16_t copycode = GetCopyLengthCode(copylen);
- *code = CombineLengthCodes(inscode, copycode, use_last_distance);
-}
-
-static BROTLI_INLINE uint32_t GetInsertBase(uint16_t inscode) {
- return kInsBase[inscode];
-}
-
-static BROTLI_INLINE uint32_t GetInsertExtra(uint16_t inscode) {
- return kInsExtra[inscode];
-}
-
-static BROTLI_INLINE uint32_t GetCopyBase(uint16_t copycode) {
- return kCopyBase[copycode];
-}
-
-static BROTLI_INLINE uint32_t GetCopyExtra(uint16_t copycode) {
- return kCopyExtra[copycode];
-}
-
-typedef struct Command {
- uint32_t insert_len_;
- /* Stores copy_len in low 25 bits and copy_code - copy_len in high 7 bit. */
- uint32_t copy_len_;
- /* Stores distance extra bits. */
- uint32_t dist_extra_;
- uint16_t cmd_prefix_;
- /* Stores distance code in low 10 bits
- and number of extra bits in high 6 bits. */
- uint16_t dist_prefix_;
-} Command;
-
-/* distance_code is e.g. 0 for same-as-last short code, or 16 for offset 1. */
-static BROTLI_INLINE void InitCommand(Command* self,
- const BrotliDistanceParams* dist, size_t insertlen,
- size_t copylen, int copylen_code_delta, size_t distance_code) {
- /* Don't rely on signed int representation, use honest casts. */
- uint32_t delta = (uint8_t)((int8_t)copylen_code_delta);
- self->insert_len_ = (uint32_t)insertlen;
- self->copy_len_ = (uint32_t)(copylen | (delta << 25));
- /* The distance prefix and extra bits are stored in this Command as if
- npostfix and ndirect were 0, they are only recomputed later after the
- clustering if needed. */
- PrefixEncodeCopyDistance(
- distance_code, dist->num_direct_distance_codes,
- dist->distance_postfix_bits, &self->dist_prefix_, &self->dist_extra_);
- GetLengthCode(
- insertlen, (size_t)((int)copylen + copylen_code_delta),
- TO_BROTLI_BOOL((self->dist_prefix_ & 0x3FF) == 0), &self->cmd_prefix_);
-}
-
-static BROTLI_INLINE void InitInsertCommand(Command* self, size_t insertlen) {
- self->insert_len_ = (uint32_t)insertlen;
- self->copy_len_ = 4 << 25;
- self->dist_extra_ = 0;
- self->dist_prefix_ = BROTLI_NUM_DISTANCE_SHORT_CODES;
- GetLengthCode(insertlen, 4, BROTLI_FALSE, &self->cmd_prefix_);
-}
-
-static BROTLI_INLINE uint32_t CommandRestoreDistanceCode(
- const Command* self, const BrotliDistanceParams* dist) {
- if ((self->dist_prefix_ & 0x3FFu) <
- BROTLI_NUM_DISTANCE_SHORT_CODES + dist->num_direct_distance_codes) {
- return self->dist_prefix_ & 0x3FFu;
- } else {
- uint32_t dcode = self->dist_prefix_ & 0x3FFu;
- uint32_t nbits = self->dist_prefix_ >> 10;
- uint32_t extra = self->dist_extra_;
- uint32_t postfix_mask = (1U << dist->distance_postfix_bits) - 1U;
- uint32_t hcode = (dcode - dist->num_direct_distance_codes -
- BROTLI_NUM_DISTANCE_SHORT_CODES) >>
- dist->distance_postfix_bits;
- uint32_t lcode = (dcode - dist->num_direct_distance_codes -
- BROTLI_NUM_DISTANCE_SHORT_CODES) & postfix_mask;
- uint32_t offset = ((2U + (hcode & 1U)) << nbits) - 4U;
- return ((offset + extra) << dist->distance_postfix_bits) + lcode +
- dist->num_direct_distance_codes + BROTLI_NUM_DISTANCE_SHORT_CODES;
- }
-}
-
-static BROTLI_INLINE uint32_t CommandDistanceContext(const Command* self) {
- uint32_t r = self->cmd_prefix_ >> 6;
- uint32_t c = self->cmd_prefix_ & 7;
- if ((r == 0 || r == 2 || r == 4 || r == 7) && (c <= 2)) {
- return c;
- }
- return 3;
-}
-
-static BROTLI_INLINE uint32_t CommandCopyLen(const Command* self) {
- return self->copy_len_ & 0x1FFFFFF;
-}
-
-static BROTLI_INLINE uint32_t CommandCopyLenCode(const Command* self) {
- uint32_t modifier = self->copy_len_ >> 25;
- int32_t delta = (int8_t)((uint8_t)(modifier | ((modifier & 0x40) << 1)));
- return (uint32_t)((int32_t)(self->copy_len_ & 0x1FFFFFF) + delta);
-}
-
-#if defined(__cplusplus) || defined(c_plusplus)
-} /* extern "C" */
-#endif
-
-#endif /* BROTLI_ENC_COMMAND_H_ */
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-25 04:29:19 +0000