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mdbx++: revive encode/decode to hex/base58/base64 (squashed).

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This commit is contained in:
Leonid Yuriev 2021-07-25 16:52:01 +03:00
parent 046dc02f73
commit 65fa0cf8ed
3 changed files with 966 additions and 444 deletions
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1
.github/actions/spelling/expect.txt vendored
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@ -1735,6 +1735,7 @@ toolset
tooltip tooltip
torquem torquem
TOUPPER TOUPPER
transcoder
transcoding transcoding
treeview treeview
tribudubois tribudubois

1305
mdbx.h++
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File diff suppressed because it is too large Load Diff

104
src/mdbx.c++
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@ -538,15 +538,14 @@ bool slice::is_printable(bool disable_utf8) const noexcept {
//------------------------------------------------------------------------------ //------------------------------------------------------------------------------
char *slice::to_hex(char *__restrict dest, size_t dest_size, bool uppercase, char *to_hex::write_bytes(char *__restrict dest, size_t dest_size) const {
unsigned wrap_width) const { if (MDBX_UNLIKELY(envisage_result_length() > dest_size))
if (MDBX_UNLIKELY(envisage_to_hex_length(wrap_width) > dest_size))
MDBX_CXX20_UNLIKELY throw_too_small_target_buffer(); MDBX_CXX20_UNLIKELY throw_too_small_target_buffer();
auto src = byte_ptr(); auto src = source.byte_ptr();
const char alphabase = (uppercase ? 'A' : 'a') - 10; const char alphabase = (uppercase ? 'A' : 'a') - 10;
auto line = dest; auto line = dest;
for (const auto end = src + length(); src != end; ++src) { for (const auto end = source.end_byte_ptr(); src != end; ++src) {
const int8_t hi = *src >> 4; const int8_t hi = *src >> 4;
const int8_t lo = *src & 15; const int8_t lo = *src & 15;
dest[0] = char(alphabase + hi + (((hi - 10) >> 7) & -7)); dest[0] = char(alphabase + hi + (((hi - 10) >> 7) & -7));
@ -560,16 +559,15 @@ char *slice::to_hex(char *__restrict dest, size_t dest_size, bool uppercase,
return dest; return dest;
} }
byte *slice::from_hex(byte *__restrict dest, size_t dest_size, char *from_hex::write_bytes(char *__restrict dest, size_t dest_size) const {
bool ignore_spaces) const { if (MDBX_UNLIKELY(source.length() % 2 && !ignore_spaces))
if (MDBX_UNLIKELY(length() % 2 && !ignore_spaces))
MDBX_CXX20_UNLIKELY throw std::domain_error( MDBX_CXX20_UNLIKELY throw std::domain_error(
"mdbx::from_hex:: odd length of hexadecimal string"); "mdbx::from_hex:: odd length of hexadecimal string");
if (MDBX_UNLIKELY(envisage_from_hex_length() > dest_size)) if (MDBX_UNLIKELY(envisage_result_length() > dest_size))
MDBX_CXX20_UNLIKELY throw_too_small_target_buffer(); MDBX_CXX20_UNLIKELY throw_too_small_target_buffer();
auto src = byte_ptr(); auto src = source.byte_ptr();
for (auto left = length(); left > 0;) { for (auto left = source.length(); left > 0;) {
if (MDBX_UNLIKELY(*src <= ' ') && if (MDBX_UNLIKELY(*src <= ' ') &&
MDBX_LIKELY(ignore_spaces && isspace(*src))) { MDBX_LIKELY(ignore_spaces && isspace(*src))) {
++src; ++src;
@ -596,13 +594,13 @@ byte *slice::from_hex(byte *__restrict dest, size_t dest_size,
return dest; return dest;
} }
bool slice::is_hex(bool ignore_spaces) const noexcept { bool from_hex::is_erroneous() const noexcept {
if (MDBX_UNLIKELY(length() % 2 && !ignore_spaces)) if (MDBX_UNLIKELY(source.length() % 2 && !ignore_spaces))
MDBX_CXX20_UNLIKELY return false; MDBX_CXX20_UNLIKELY return true;
bool got = false; bool got = false;
auto src = byte_ptr(); auto src = source.byte_ptr();
for (auto left = length(); left > 0;) { for (auto left = source.length(); left > 0;) {
if (MDBX_UNLIKELY(*src <= ' ') && if (MDBX_UNLIKELY(*src <= ' ') &&
MDBX_LIKELY(ignore_spaces && isspace(*src))) { MDBX_LIKELY(ignore_spaces && isspace(*src))) {
++src; ++src;
@ -611,13 +609,13 @@ bool slice::is_hex(bool ignore_spaces) const noexcept {
} }
if (MDBX_UNLIKELY(left < 1 || !isxdigit(src[0]) || !isxdigit(src[1]))) if (MDBX_UNLIKELY(left < 1 || !isxdigit(src[0]) || !isxdigit(src[1])))
MDBX_CXX20_UNLIKELY return false; MDBX_CXX20_UNLIKELY return true;
got = true; got = true;
src += 2; src += 2;
left -= 2; left -= 2;
} }
return got; return !got;
} }
//------------------------------------------------------------------------------ //------------------------------------------------------------------------------
@ -665,13 +663,12 @@ static inline char b58_8to11(uint64_t &v) noexcept {
return b58_alphabet[i]; return b58_alphabet[i];
} }
char *slice::to_base58(char *__restrict dest, size_t dest_size, char *to_base58::write_bytes(char *__restrict dest, size_t dest_size) const {
unsigned wrap_width) const { if (MDBX_UNLIKELY(envisage_result_length() > dest_size))
if (MDBX_UNLIKELY(envisage_to_base58_length(wrap_width) > dest_size))
MDBX_CXX20_UNLIKELY throw_too_small_target_buffer(); MDBX_CXX20_UNLIKELY throw_too_small_target_buffer();
auto src = byte_ptr(); auto src = source.byte_ptr();
size_t left = length(); size_t left = source.length();
auto line = dest; auto line = dest;
while (MDBX_LIKELY(left > 7)) { while (MDBX_LIKELY(left > 7)) {
left -= 8; left -= 8;
@ -748,13 +745,12 @@ static inline signed char b58_11to8(uint64_t &v, const byte c) noexcept {
return m; return m;
} }
byte *slice::from_base58(byte *__restrict dest, size_t dest_size, char *from_base58::write_bytes(char *__restrict dest, size_t dest_size) const {
bool ignore_spaces) const { if (MDBX_UNLIKELY(envisage_result_length() > dest_size))
if (MDBX_UNLIKELY(envisage_from_base58_length() > dest_size))
MDBX_CXX20_UNLIKELY throw_too_small_target_buffer(); MDBX_CXX20_UNLIKELY throw_too_small_target_buffer();
auto src = byte_ptr(); auto src = source.byte_ptr();
for (auto left = length(); left > 0;) { for (auto left = source.length(); left > 0;) {
if (MDBX_UNLIKELY(isspace(*src)) && ignore_spaces) { if (MDBX_UNLIKELY(isspace(*src)) && ignore_spaces) {
++src; ++src;
--left; --left;
@ -808,10 +804,10 @@ bailout:
throw std::domain_error("mdbx::from_base58:: invalid base58 string"); throw std::domain_error("mdbx::from_base58:: invalid base58 string");
} }
bool slice::is_base58(bool ignore_spaces) const noexcept { bool from_base58::is_erroneous() const noexcept {
bool got = false; bool got = false;
auto src = byte_ptr(); auto src = source.byte_ptr();
for (auto left = length(); left > 0;) { for (auto left = source.length(); left > 0;) {
if (MDBX_UNLIKELY(*src <= ' ') && if (MDBX_UNLIKELY(*src <= ' ') &&
MDBX_LIKELY(ignore_spaces && isspace(*src))) { MDBX_LIKELY(ignore_spaces && isspace(*src))) {
++src; ++src;
@ -824,7 +820,7 @@ bool slice::is_base58(bool ignore_spaces) const noexcept {
b58_map[src[3]] | b58_map[src[4]] | b58_map[src[5]] | b58_map[src[3]] | b58_map[src[4]] | b58_map[src[5]] |
b58_map[src[6]] | b58_map[src[7]] | b58_map[src[8]] | b58_map[src[6]] | b58_map[src[7]] | b58_map[src[8]] |
b58_map[src[9]] | b58_map[src[10]]) < 0)) b58_map[src[9]] | b58_map[src[10]]) < 0))
return false; MDBX_CXX20_UNLIKELY return true;
src += 11; src += 11;
left -= 11; left -= 11;
got = true; got = true;
@ -837,12 +833,12 @@ bool slice::is_base58(bool ignore_spaces) const noexcept {
do do
if (MDBX_UNLIKELY(b58_map[*src++] < 0)) if (MDBX_UNLIKELY(b58_map[*src++] < 0))
MDBX_CXX20_UNLIKELY return false; MDBX_CXX20_UNLIKELY return true;
while (--left); while (--left);
got = true; got = true;
break; break;
} }
return got; return !got;
} }
//------------------------------------------------------------------------------ //------------------------------------------------------------------------------
@ -861,13 +857,12 @@ static inline void b64_3to4(const byte x, const byte y, const byte z,
dest[3] = alphabet[z & 0x3f]; dest[3] = alphabet[z & 0x3f];
} }
char *slice::to_base64(char *__restrict dest, size_t dest_size, char *to_base64::write_bytes(char *__restrict dest, size_t dest_size) const {
unsigned wrap_width) const { if (MDBX_UNLIKELY(envisage_result_length() > dest_size))
if (MDBX_UNLIKELY(envisage_to_base64_length(wrap_width) > dest_size))
MDBX_CXX20_UNLIKELY throw_too_small_target_buffer(); MDBX_CXX20_UNLIKELY throw_too_small_target_buffer();
auto src = byte_ptr(); auto src = source.byte_ptr();
size_t left = length(); size_t left = source.length();
auto line = dest; auto line = dest;
while (true) { while (true) {
switch (left) { switch (left) {
@ -917,23 +912,22 @@ static const signed char b64_map[256] = {
static inline signed char b64_4to3(signed char a, signed char b, signed char c, static inline signed char b64_4to3(signed char a, signed char b, signed char c,
signed char d, signed char d,
byte *__restrict dest) noexcept { char *__restrict dest) noexcept {
dest[0] = byte((a << 2) + ((b & 0x30) >> 4)); dest[0] = byte((a << 2) + ((b & 0x30) >> 4));
dest[1] = byte(((b & 0xf) << 4) + ((c & 0x3c) >> 2)); dest[1] = byte(((b & 0xf) << 4) + ((c & 0x3c) >> 2));
dest[2] = byte(((c & 0x3) << 6) + d); dest[2] = byte(((c & 0x3) << 6) + d);
return a | b | c | d; return a | b | c | d;
} }
byte *slice::from_base64(byte *__restrict dest, size_t dest_size, char *from_base64::write_bytes(char *__restrict dest, size_t dest_size) const {
bool ignore_spaces) const { if (MDBX_UNLIKELY(source.length() % 4 && !ignore_spaces))
if (MDBX_UNLIKELY(length() % 4 && !ignore_spaces))
MDBX_CXX20_UNLIKELY throw std::domain_error( MDBX_CXX20_UNLIKELY throw std::domain_error(
"mdbx::from_base64:: odd length of base64 string"); "mdbx::from_base64:: odd length of base64 string");
if (MDBX_UNLIKELY(envisage_from_base64_length() > dest_size)) if (MDBX_UNLIKELY(envisage_result_length() > dest_size))
MDBX_CXX20_UNLIKELY throw_too_small_target_buffer(); MDBX_CXX20_UNLIKELY throw_too_small_target_buffer();
auto src = byte_ptr(); auto src = source.byte_ptr();
for (auto left = length(); left > 0;) { for (auto left = source.length(); left > 0;) {
if (MDBX_UNLIKELY(*src <= ' ') && if (MDBX_UNLIKELY(*src <= ' ') &&
MDBX_LIKELY(ignore_spaces && isspace(*src))) { MDBX_LIKELY(ignore_spaces && isspace(*src))) {
++src; ++src;
@ -963,13 +957,13 @@ byte *slice::from_base64(byte *__restrict dest, size_t dest_size,
return dest; return dest;
} }
bool slice::is_base64(bool ignore_spaces) const noexcept { bool from_base64::is_erroneous() const noexcept {
if (MDBX_UNLIKELY(length() % 4 && !ignore_spaces)) if (MDBX_UNLIKELY(source.length() % 4 && !ignore_spaces))
MDBX_CXX20_UNLIKELY return false; MDBX_CXX20_UNLIKELY return true;
bool got = false; bool got = false;
auto src = byte_ptr(); auto src = source.byte_ptr();
for (auto left = length(); left > 0;) { for (auto left = source.length(); left > 0;) {
if (MDBX_UNLIKELY(*src <= ' ') && if (MDBX_UNLIKELY(*src <= ' ') &&
MDBX_LIKELY(ignore_spaces && isspace(*src))) { MDBX_LIKELY(ignore_spaces && isspace(*src))) {
++src; ++src;
@ -984,14 +978,14 @@ bool slice::is_base64(bool ignore_spaces) const noexcept {
if (MDBX_UNLIKELY((a | b | c | d) < 0)) if (MDBX_UNLIKELY((a | b | c | d) < 0))
MDBX_CXX20_UNLIKELY { MDBX_CXX20_UNLIKELY {
if (left == 4 && (a | b) >= 0 && d == EQ && (c >= 0 || c == d)) if (left == 4 && (a | b) >= 0 && d == EQ && (c >= 0 || c == d))
return true; return false;
return false; return true;
} }
got = true; got = true;
src += 4; src += 4;
left -= 4; left -= 4;
} }
return got; return !got;
} }
//------------------------------------------------------------------------------ //------------------------------------------------------------------------------
@ -1406,7 +1400,7 @@ __cold ::std::ostream &operator<<(::std::ostream &out, const slice &it) {
if (root.is_printable()) if (root.is_printable())
(out << "\"").write(root.char_ptr(), root.length()) << "\""; (out << "\"").write(root.char_ptr(), root.length()) << "\"";
else else
out << root.base58_encode(); out << root.encode_base58();
if (root.length() < it.length()) if (root.length() < it.length())
out << "..."; out << "...";
} }