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Use cares_get_32bit as a function helper
#34944
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,98 @@ | ||
| #ifndef SRC_BASE64_INL_H_ | ||
| #define SRC_BASE64_INL_H_ | ||
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| #if defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS | ||
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| #include "util.h" | ||
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| namespace node { | ||
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| extern const int8_t unbase64_table[256]; | ||
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| inline static int8_t unbase64(uint8_t x) { | ||
| return unbase64_table[x]; | ||
| } | ||
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| inline uint32_t ReadUint32BE(const unsigned char* p) { | ||
| return static_cast<uint32_t>(p[0] << 24U) | | ||
| static_cast<uint32_t>(p[1] << 16U) | | ||
| static_cast<uint32_t>(p[2] << 8U) | | ||
| static_cast<uint32_t>(p[3]); | ||
| } | ||
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| template <typename TypeName> | ||
| bool base64_decode_group_slow(char* const dst, const size_t dstlen, | ||
| const TypeName* const src, const size_t srclen, | ||
| size_t* const i, size_t* const k) { | ||
| uint8_t hi; | ||
| uint8_t lo; | ||
| #define V(expr) \ | ||
| for (;;) { \ | ||
| const uint8_t c = src[*i]; \ | ||
| lo = unbase64(c); \ | ||
| *i += 1; \ | ||
| if (lo < 64) \ | ||
| break; /* Legal character. */ \ | ||
| if (c == '=' || *i >= srclen) \ | ||
| return false; /* Stop decoding. */ \ | ||
| } \ | ||
| expr; \ | ||
| if (*i >= srclen) \ | ||
| return false; \ | ||
| if (*k >= dstlen) \ | ||
| return false; \ | ||
| hi = lo; | ||
| V(/* Nothing. */); | ||
| V(dst[(*k)++] = ((hi & 0x3F) << 2) | ((lo & 0x30) >> 4)); | ||
| V(dst[(*k)++] = ((hi & 0x0F) << 4) | ((lo & 0x3C) >> 2)); | ||
| V(dst[(*k)++] = ((hi & 0x03) << 6) | ((lo & 0x3F) >> 0)); | ||
| #undef V | ||
| return true; // Continue decoding. | ||
| } | ||
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| template <typename TypeName> | ||
| size_t base64_decode_fast(char* const dst, const size_t dstlen, | ||
| const TypeName* const src, const size_t srclen, | ||
| const size_t decoded_size) { | ||
| const size_t available = dstlen < decoded_size ? dstlen : decoded_size; | ||
| const size_t max_k = available / 3 * 3; | ||
| size_t max_i = srclen / 4 * 4; | ||
| size_t i = 0; | ||
| size_t k = 0; | ||
| while (i < max_i && k < max_k) { | ||
| const unsigned char txt[] = { | ||
| static_cast<unsigned char>(unbase64(src[i + 0])), | ||
| static_cast<unsigned char>(unbase64(src[i + 1])), | ||
| static_cast<unsigned char>(unbase64(src[i + 2])), | ||
| static_cast<unsigned char>(unbase64(src[i + 3])), | ||
| }; | ||
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| const uint32_t v = ReadUint32BE(txt); | ||
| // If MSB is set, input contains whitespace or is not valid base64. | ||
| if (v & 0x80808080) { | ||
| if (!base64_decode_group_slow(dst, dstlen, src, srclen, &i, &k)) | ||
| return k; | ||
| max_i = i + (srclen - i) / 4 * 4; // Align max_i again. | ||
| } else { | ||
| dst[k + 0] = ((v >> 22) & 0xFC) | ((v >> 20) & 0x03); | ||
| dst[k + 1] = ((v >> 12) & 0xF0) | ((v >> 10) & 0x0F); | ||
| dst[k + 2] = ((v >> 2) & 0xC0) | ((v >> 0) & 0x3F); | ||
| i += 4; | ||
| k += 3; | ||
| } | ||
| } | ||
| if (i < srclen && k < dstlen) { | ||
| base64_decode_group_slow(dst, dstlen, src, srclen, &i, &k); | ||
| } | ||
| return k; | ||
| } | ||
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| } // namespace node | ||
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| #endif // defined(NODE_WANT_INTERNALS) && NODE_WANT_INTERNALS | ||
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| #endif // SRC_BASE64_INL_H_ |
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Can you remove this line, and replace
#include "base64.h"with#include "base64-inl.h"instead where necessary?The general idea here is:
.hheader files contain declarations, and sometimes some definitions that don’t require including other headers (e.g. for getters/setters).hheader files include only other.hheaders-inl.hheader files contain definitions of inline functions from the corresponding.hheader file, i.e. functions markedinlinein the declaration ortemplatefunctions-inl.hheader files include the corresponding.hheader file, and other.hand-inl.hheader files as needed.hfile into an-inl.hfile, but it becomes necessary when the contents of other-inl.hfiles start being used, and it is very much recommended when the functions are longer than a few lines to keep the corresponding.hfile readable.hheader file.ccfiles contain definitions of non-inline functions from the corresponding.hheader file.ccfiles also include the corresponding.hheader file, and other.hand-inl.hheader files as neededI hope this is helpful?