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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,21 @@ | ||
| include(FindPackageHandleStandardArgs) | ||
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| find_path(BROTLI_INCLUDE_DIR "brotli/decode.h") | ||
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| find_library(BROTLICOMMON_LIBRARY NAMES brotlicommon) | ||
| find_library(BROTLIDEC_LIBRARY NAMES brotlidec) | ||
| find_library(BROTLIENC_LIBRARY NAMES brotlienc) | ||
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| find_package_handle_standard_args(Brotli | ||
| FOUND_VAR | ||
| BROTLI_FOUND | ||
| REQUIRED_VARS | ||
| BROTLIDEC_LIBRARY | ||
| BROTLICOMMON_LIBRARY | ||
| BROTLI_INCLUDE_DIR | ||
| FAIL_MESSAGE | ||
| "Could NOT find Brotli" | ||
| ) | ||
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| set(BROTLI_INCLUDE_DIRS ${BROTLI_INCLUDE_DIR}) | ||
| set(BROTLI_LIBRARIES ${BROTLIDEC_LIBRARY} ${BROTLIENC_LIBRARY} ${BROTLICOMMON_LIBRARY}) |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,82 @@ | ||
| #pragma once | ||
| #include <string> | ||
| #include <string_view> | ||
| #include <array> | ||
| #include <sstream> | ||
| #include <brotli/decode.h> | ||
| #include <brotli/encode.h> | ||
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| namespace cinatra::br_codec { | ||
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| #define BROTLI_BUFFER_SIZE 1024 | ||
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| inline bool brotli_compress(std::string_view input, std::string &output) | ||
| { | ||
| auto instance = BrotliEncoderCreateInstance(nullptr, nullptr, nullptr); | ||
| std::array<uint8_t, BROTLI_BUFFER_SIZE> buffer; | ||
| std::stringstream result; | ||
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| size_t available_in = input.size(), available_out = buffer.size(); | ||
| const uint8_t* next_in = reinterpret_cast<const uint8_t*>(input.data()); | ||
| uint8_t* next_out = buffer.data(); | ||
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| do | ||
| { | ||
| int ret = BrotliEncoderCompressStream | ||
| ( | ||
| instance, BROTLI_OPERATION_FINISH, | ||
| &available_in, &next_in, &available_out, &next_out, nullptr | ||
| ); | ||
| if (!ret) | ||
| return false; | ||
| result.write(reinterpret_cast<const char*>(buffer.data()), buffer.size() - available_out); | ||
| available_out = buffer.size(); | ||
| next_out = buffer.data(); | ||
| } | ||
| while (!(available_in == 0 && BrotliEncoderIsFinished(instance))); | ||
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| BrotliEncoderDestroyInstance(instance); | ||
| output = result.str(); | ||
| return true; | ||
| } | ||
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| inline bool brotli_decompress(std::string_view input, std::string &decompressed) | ||
| { | ||
| if (input.size() == 0) | ||
| return false; | ||
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| size_t available_in = input.size(); | ||
| auto next_in = (const uint8_t *)(input.data()); | ||
| decompressed = std::string(available_in * 3, 0); | ||
| size_t available_out = decompressed.size(); | ||
| auto next_out = (uint8_t *)(decompressed.data()); | ||
| size_t total_out{0}; | ||
| bool done = false; | ||
| auto s = BrotliDecoderCreateInstance(nullptr, nullptr, nullptr); | ||
| while (!done) { | ||
| auto result = BrotliDecoderDecompressStream( | ||
| s, &available_in, &next_in, &available_out, &next_out, &total_out); | ||
| if (result == BROTLI_DECODER_RESULT_SUCCESS) { | ||
| decompressed.resize(total_out); | ||
| BrotliDecoderDestroyInstance(s); | ||
| return true; | ||
| } | ||
| else if (result == BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT) { | ||
| if (total_out != decompressed.size()) { | ||
| return false; | ||
| } | ||
| decompressed.resize(total_out * 2); | ||
| next_out = (uint8_t *)(decompressed.data() + total_out); | ||
| available_out = total_out; | ||
| } | ||
| else { | ||
| decompressed.resize(0); | ||
| BrotliDecoderDestroyInstance(s); | ||
| return true; | ||
| } | ||
| } | ||
| return true; | ||
| } | ||
| } | ||
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| // namespace cinatra::br_codec |
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