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-rw-r--r--debian/vendor-h2o/deps/brotli/enc/context.h178
1 files changed, 0 insertions, 178 deletions
diff --git a/debian/vendor-h2o/deps/brotli/enc/context.h b/debian/vendor-h2o/deps/brotli/enc/context.h
deleted file mode 100644
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--- a/debian/vendor-h2o/deps/brotli/enc/context.h
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@@ -1,178 +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
-*/
-
-// Functions to map previous bytes into a context id.
-
-#ifndef BROTLI_ENC_CONTEXT_H_
-#define BROTLI_ENC_CONTEXT_H_
-
-#include "./types.h"
-
-namespace brotli {
-
-// Second-order context lookup table for UTF8 byte streams.
-//
-// If p1 and p2 are the previous two bytes, we calculate the context as
-//
-// context = kUTF8ContextLookup[p1] | kUTF8ContextLookup[p2 + 256].
-//
-// If the previous two bytes are ASCII characters (i.e. < 128), this will be
-// equivalent to
-//
-// context = 4 * context1(p1) + context2(p2),
-//
-// where context1 is based on the previous byte in the following way:
-//
-// 0 : non-ASCII control
-// 1 : \t, \n, \r
-// 2 : space
-// 3 : other punctuation
-// 4 : " '
-// 5 : %
-// 6 : ( < [ {
-// 7 : ) > ] }
-// 8 : , ; :
-// 9 : .
-// 10 : =
-// 11 : number
-// 12 : upper-case vowel
-// 13 : upper-case consonant
-// 14 : lower-case vowel
-// 15 : lower-case consonant
-//
-// and context2 is based on the second last byte:
-//
-// 0 : control, space
-// 1 : punctuation
-// 2 : upper-case letter, number
-// 3 : lower-case letter
-//
-// If the last byte is ASCII, and the second last byte is not (in a valid UTF8
-// stream it will be a continuation byte, value between 128 and 191), the
-// context is the same as if the second last byte was an ASCII control or space.
-//
-// If the last byte is a UTF8 lead byte (value >= 192), then the next byte will
-// be a continuation byte and the context id is 2 or 3 depending on the LSB of
-// the last byte and to a lesser extent on the second last byte if it is ASCII.
-//
-// If the last byte is a UTF8 continuation byte, the second last byte can be:
-// - continuation byte: the next byte is probably ASCII or lead byte (assuming
-// 4-byte UTF8 characters are rare) and the context id is 0 or 1.
-// - lead byte (192 - 207): next byte is ASCII or lead byte, context is 0 or 1
-// - lead byte (208 - 255): next byte is continuation byte, context is 2 or 3
-//
-// The possible value combinations of the previous two bytes, the range of
-// context ids and the type of the next byte is summarized in the table below:
-//
-// |--------\-----------------------------------------------------------------|
-// | \ Last byte |
-// | Second \---------------------------------------------------------------|
-// | last byte \ ASCII | cont. byte | lead byte |
-// | \ (0-127) | (128-191) | (192-) |
-// |=============|===================|=====================|==================|
-// | ASCII | next: ASCII/lead | not valid | next: cont. |
-// | (0-127) | context: 4 - 63 | | context: 2 - 3 |
-// |-------------|-------------------|---------------------|------------------|
-// | cont. byte | next: ASCII/lead | next: ASCII/lead | next: cont. |
-// | (128-191) | context: 4 - 63 | context: 0 - 1 | context: 2 - 3 |
-// |-------------|-------------------|---------------------|------------------|
-// | lead byte | not valid | next: ASCII/lead | not valid |
-// | (192-207) | | context: 0 - 1 | |
-// |-------------|-------------------|---------------------|------------------|
-// | lead byte | not valid | next: cont. | not valid |
-// | (208-) | | context: 2 - 3 | |
-// |-------------|-------------------|---------------------|------------------|
-static const uint8_t kUTF8ContextLookup[512] = {
- // Last byte.
- //
- // ASCII range.
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0, 0, 4, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 8, 12, 16, 12, 12, 20, 12, 16, 24, 28, 12, 12, 32, 12, 36, 12,
- 44, 44, 44, 44, 44, 44, 44, 44, 44, 44, 32, 32, 24, 40, 28, 12,
- 12, 48, 52, 52, 52, 48, 52, 52, 52, 48, 52, 52, 52, 52, 52, 48,
- 52, 52, 52, 52, 52, 48, 52, 52, 52, 52, 52, 24, 12, 28, 12, 12,
- 12, 56, 60, 60, 60, 56, 60, 60, 60, 56, 60, 60, 60, 60, 60, 56,
- 60, 60, 60, 60, 60, 56, 60, 60, 60, 60, 60, 24, 12, 28, 12, 0,
- // UTF8 continuation byte range.
- 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
- 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
- 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
- 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1,
- // UTF8 lead byte range.
- 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3,
- 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3,
- 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3,
- 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3, 2, 3,
- // Second last byte.
- //
- // ASCII range.
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1,
- 1, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1,
- 1, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 0,
- // UTF8 continuation byte range.
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- // UTF8 lead byte range.
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
-};
-
-// Context lookup table for small signed integers.
-static const uint8_t kSigned3BitContextLookup[] = {
- 0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5,
- 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 7,
-};
-
-enum ContextType {
- CONTEXT_LSB6 = 0,
- CONTEXT_MSB6 = 1,
- CONTEXT_UTF8 = 2,
- CONTEXT_SIGNED = 3
-};
-
-static inline uint8_t Context(uint8_t p1, uint8_t p2, ContextType mode) {
- switch (mode) {
- case CONTEXT_LSB6:
- return p1 & 0x3f;
- case CONTEXT_MSB6:
- return static_cast<uint8_t>(p1 >> 2);
- case CONTEXT_UTF8:
- return kUTF8ContextLookup[p1] | kUTF8ContextLookup[p2 + 256];
- case CONTEXT_SIGNED:
- return static_cast<uint8_t>((kSigned3BitContextLookup[p1] << 3) +
- kSigned3BitContextLookup[p2]);
- default:
- return 0;
- }
-}
-
-} // namespace brotli
-
-#endif // BROTLI_ENC_CONTEXT_H_
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-24 19:35:55 +0000