fork of https://github.com/oxigraph/rocksdb and https://github.com/facebook/rocksdb for nextgraph and oxigraph
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
504 lines
13 KiB
504 lines
13 KiB
// Copyright (c) 2011-present, Facebook, Inc. All rights reserved.
|
|
// This source code is licensed under both the GPLv2 (found in the
|
|
// COPYING file in the root directory) and Apache 2.0 License
|
|
// (found in the LICENSE.Apache file in the root directory).
|
|
//
|
|
#include "util/string_util.h"
|
|
|
|
#include <errno.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
|
|
#include <algorithm>
|
|
#include <cinttypes>
|
|
#include <cmath>
|
|
#include <sstream>
|
|
#include <string>
|
|
#include <utility>
|
|
#include <vector>
|
|
|
|
#include "port/port.h"
|
|
#include "port/sys_time.h"
|
|
#include "rocksdb/slice.h"
|
|
|
|
#ifndef __has_cpp_attribute
|
|
#define ROCKSDB_HAS_CPP_ATTRIBUTE(x) 0
|
|
#else
|
|
#define ROCKSDB_HAS_CPP_ATTRIBUTE(x) __has_cpp_attribute(x)
|
|
#endif
|
|
|
|
#if ROCKSDB_HAS_CPP_ATTRIBUTE(maybe_unused) && __cplusplus >= 201703L
|
|
#define ROCKSDB_MAYBE_UNUSED [[maybe_unused]]
|
|
#elif ROCKSDB_HAS_CPP_ATTRIBUTE(gnu::unused) || __GNUC__
|
|
#define ROCKSDB_MAYBE_UNUSED [[gnu::unused]]
|
|
#else
|
|
#define ROCKSDB_MAYBE_UNUSED
|
|
#endif
|
|
|
|
namespace ROCKSDB_NAMESPACE {
|
|
|
|
const std::string kNullptrString = "nullptr";
|
|
|
|
std::vector<std::string> StringSplit(const std::string& arg, char delim) {
|
|
std::vector<std::string> splits;
|
|
std::stringstream ss(arg);
|
|
std::string item;
|
|
while (std::getline(ss, item, delim)) {
|
|
splits.push_back(item);
|
|
}
|
|
return splits;
|
|
}
|
|
|
|
// for micros < 10ms, print "XX us".
|
|
// for micros < 10sec, print "XX ms".
|
|
// for micros >= 10 sec, print "XX sec".
|
|
// for micros <= 1 hour, print Y:X M:S".
|
|
// for micros > 1 hour, print Z:Y:X H:M:S".
|
|
int AppendHumanMicros(uint64_t micros, char* output, int len,
|
|
bool fixed_format) {
|
|
if (micros < 10000 && !fixed_format) {
|
|
return snprintf(output, len, "%" PRIu64 " us", micros);
|
|
} else if (micros < 10000000 && !fixed_format) {
|
|
return snprintf(output, len, "%.3lf ms",
|
|
static_cast<double>(micros) / 1000);
|
|
} else if (micros < 1000000l * 60 && !fixed_format) {
|
|
return snprintf(output, len, "%.3lf sec",
|
|
static_cast<double>(micros) / 1000000);
|
|
} else if (micros < 1000000ll * 60 * 60 && !fixed_format) {
|
|
return snprintf(output, len, "%02" PRIu64 ":%05.3f M:S",
|
|
micros / 1000000 / 60,
|
|
static_cast<double>(micros % 60000000) / 1000000);
|
|
} else {
|
|
return snprintf(output, len, "%02" PRIu64 ":%02" PRIu64 ":%05.3f H:M:S",
|
|
micros / 1000000 / 3600, (micros / 1000000 / 60) % 60,
|
|
static_cast<double>(micros % 60000000) / 1000000);
|
|
}
|
|
}
|
|
|
|
// for sizes >=10TB, print "XXTB"
|
|
// for sizes >=10GB, print "XXGB"
|
|
// etc.
|
|
// append file size summary to output and return the len
|
|
int AppendHumanBytes(uint64_t bytes, char* output, int len) {
|
|
const uint64_t ull10 = 10;
|
|
if (bytes >= ull10 << 40) {
|
|
return snprintf(output, len, "%" PRIu64 "TB", bytes >> 40);
|
|
} else if (bytes >= ull10 << 30) {
|
|
return snprintf(output, len, "%" PRIu64 "GB", bytes >> 30);
|
|
} else if (bytes >= ull10 << 20) {
|
|
return snprintf(output, len, "%" PRIu64 "MB", bytes >> 20);
|
|
} else if (bytes >= ull10 << 10) {
|
|
return snprintf(output, len, "%" PRIu64 "KB", bytes >> 10);
|
|
} else {
|
|
return snprintf(output, len, "%" PRIu64 "B", bytes);
|
|
}
|
|
}
|
|
|
|
void AppendNumberTo(std::string* str, uint64_t num) {
|
|
char buf[30];
|
|
snprintf(buf, sizeof(buf), "%" PRIu64, num);
|
|
str->append(buf);
|
|
}
|
|
|
|
void AppendEscapedStringTo(std::string* str, const Slice& value) {
|
|
for (size_t i = 0; i < value.size(); i++) {
|
|
char c = value[i];
|
|
if (c >= ' ' && c <= '~') {
|
|
str->push_back(c);
|
|
} else {
|
|
char buf[10];
|
|
snprintf(buf, sizeof(buf), "\\x%02x",
|
|
static_cast<unsigned int>(c) & 0xff);
|
|
str->append(buf);
|
|
}
|
|
}
|
|
}
|
|
|
|
std::string NumberToHumanString(int64_t num) {
|
|
char buf[19];
|
|
int64_t absnum = num < 0 ? -num : num;
|
|
if (absnum < 10000) {
|
|
snprintf(buf, sizeof(buf), "%" PRIi64, num);
|
|
} else if (absnum < 10000000) {
|
|
snprintf(buf, sizeof(buf), "%" PRIi64 "K", num / 1000);
|
|
} else if (absnum < 10000000000LL) {
|
|
snprintf(buf, sizeof(buf), "%" PRIi64 "M", num / 1000000);
|
|
} else {
|
|
snprintf(buf, sizeof(buf), "%" PRIi64 "G", num / 1000000000);
|
|
}
|
|
return std::string(buf);
|
|
}
|
|
|
|
std::string BytesToHumanString(uint64_t bytes) {
|
|
const char* size_name[] = {"KB", "MB", "GB", "TB"};
|
|
double final_size = static_cast<double>(bytes);
|
|
size_t size_idx;
|
|
|
|
// always start with KB
|
|
final_size /= 1024;
|
|
size_idx = 0;
|
|
|
|
while (size_idx < 3 && final_size >= 1024) {
|
|
final_size /= 1024;
|
|
size_idx++;
|
|
}
|
|
|
|
char buf[20];
|
|
snprintf(buf, sizeof(buf), "%.2f %s", final_size, size_name[size_idx]);
|
|
return std::string(buf);
|
|
}
|
|
|
|
std::string TimeToHumanString(int unixtime) {
|
|
char time_buffer[80];
|
|
time_t rawtime = unixtime;
|
|
struct tm tInfo;
|
|
struct tm* timeinfo = port::LocalTimeR(&rawtime, &tInfo);
|
|
assert(timeinfo == &tInfo);
|
|
strftime(time_buffer, 80, "%c", timeinfo);
|
|
return std::string(time_buffer);
|
|
}
|
|
|
|
std::string EscapeString(const Slice& value) {
|
|
std::string r;
|
|
AppendEscapedStringTo(&r, value);
|
|
return r;
|
|
}
|
|
|
|
bool ConsumeDecimalNumber(Slice* in, uint64_t* val) {
|
|
uint64_t v = 0;
|
|
int digits = 0;
|
|
while (!in->empty()) {
|
|
char c = (*in)[0];
|
|
if (c >= '0' && c <= '9') {
|
|
++digits;
|
|
const unsigned int delta = (c - '0');
|
|
static const uint64_t kMaxUint64 = ~static_cast<uint64_t>(0);
|
|
if (v > kMaxUint64 / 10 ||
|
|
(v == kMaxUint64 / 10 && delta > kMaxUint64 % 10)) {
|
|
// Overflow
|
|
return false;
|
|
}
|
|
v = (v * 10) + delta;
|
|
in->remove_prefix(1);
|
|
} else {
|
|
break;
|
|
}
|
|
}
|
|
*val = v;
|
|
return (digits > 0);
|
|
}
|
|
|
|
bool isSpecialChar(const char c) {
|
|
if (c == '\\' || c == '#' || c == ':' || c == '\r' || c == '\n') {
|
|
return true;
|
|
}
|
|
return false;
|
|
}
|
|
|
|
namespace {
|
|
using CharMap = std::pair<char, char>;
|
|
}
|
|
|
|
char UnescapeChar(const char c) {
|
|
static const CharMap convert_map[] = {{'r', '\r'}, {'n', '\n'}};
|
|
|
|
auto iter = std::find_if(std::begin(convert_map), std::end(convert_map),
|
|
[c](const CharMap& p) { return p.first == c; });
|
|
|
|
if (iter == std::end(convert_map)) {
|
|
return c;
|
|
}
|
|
return iter->second;
|
|
}
|
|
|
|
char EscapeChar(const char c) {
|
|
static const CharMap convert_map[] = {{'\n', 'n'}, {'\r', 'r'}};
|
|
|
|
auto iter = std::find_if(std::begin(convert_map), std::end(convert_map),
|
|
[c](const CharMap& p) { return p.first == c; });
|
|
|
|
if (iter == std::end(convert_map)) {
|
|
return c;
|
|
}
|
|
return iter->second;
|
|
}
|
|
|
|
std::string EscapeOptionString(const std::string& raw_string) {
|
|
std::string output;
|
|
for (auto c : raw_string) {
|
|
if (isSpecialChar(c)) {
|
|
output += '\\';
|
|
output += EscapeChar(c);
|
|
} else {
|
|
output += c;
|
|
}
|
|
}
|
|
|
|
return output;
|
|
}
|
|
|
|
std::string UnescapeOptionString(const std::string& escaped_string) {
|
|
bool escaped = false;
|
|
std::string output;
|
|
|
|
for (auto c : escaped_string) {
|
|
if (escaped) {
|
|
output += UnescapeChar(c);
|
|
escaped = false;
|
|
} else {
|
|
if (c == '\\') {
|
|
escaped = true;
|
|
continue;
|
|
}
|
|
output += c;
|
|
}
|
|
}
|
|
return output;
|
|
}
|
|
|
|
std::string trim(const std::string& str) {
|
|
if (str.empty()) return std::string();
|
|
size_t start = 0;
|
|
size_t end = str.size() - 1;
|
|
while (isspace(str[start]) != 0 && start < end) {
|
|
++start;
|
|
}
|
|
while (isspace(str[end]) != 0 && start < end) {
|
|
--end;
|
|
}
|
|
if (start <= end) {
|
|
return str.substr(start, end - start + 1);
|
|
}
|
|
return std::string();
|
|
}
|
|
|
|
bool EndsWith(const std::string& string, const std::string& pattern) {
|
|
size_t plen = pattern.size();
|
|
size_t slen = string.size();
|
|
if (plen <= slen) {
|
|
return string.compare(slen - plen, plen, pattern) == 0;
|
|
} else {
|
|
return false;
|
|
}
|
|
}
|
|
|
|
bool StartsWith(const std::string& string, const std::string& pattern) {
|
|
return string.compare(0, pattern.size(), pattern) == 0;
|
|
}
|
|
|
|
#ifndef ROCKSDB_LITE
|
|
|
|
bool ParseBoolean(const std::string& type, const std::string& value) {
|
|
if (value == "true" || value == "1") {
|
|
return true;
|
|
} else if (value == "false" || value == "0") {
|
|
return false;
|
|
}
|
|
throw std::invalid_argument(type);
|
|
}
|
|
|
|
uint8_t ParseUint8(const std::string& value) {
|
|
uint64_t num = ParseUint64(value);
|
|
if ((num >> 8LL) == 0) {
|
|
return static_cast<uint8_t>(num);
|
|
} else {
|
|
throw std::out_of_range(value);
|
|
}
|
|
}
|
|
|
|
uint32_t ParseUint32(const std::string& value) {
|
|
uint64_t num = ParseUint64(value);
|
|
if ((num >> 32LL) == 0) {
|
|
return static_cast<uint32_t>(num);
|
|
} else {
|
|
throw std::out_of_range(value);
|
|
}
|
|
}
|
|
|
|
int32_t ParseInt32(const std::string& value) {
|
|
int64_t num = ParseInt64(value);
|
|
if (num <= std::numeric_limits<int32_t>::max() &&
|
|
num >= std::numeric_limits<int32_t>::min()) {
|
|
return static_cast<int32_t>(num);
|
|
} else {
|
|
throw std::out_of_range(value);
|
|
}
|
|
}
|
|
|
|
#endif
|
|
|
|
uint64_t ParseUint64(const std::string& value) {
|
|
size_t endchar;
|
|
#ifndef CYGWIN
|
|
uint64_t num = std::stoull(value.c_str(), &endchar);
|
|
#else
|
|
char* endptr;
|
|
uint64_t num = std::strtoul(value.c_str(), &endptr, 0);
|
|
endchar = endptr - value.c_str();
|
|
#endif
|
|
|
|
if (endchar < value.length()) {
|
|
char c = value[endchar];
|
|
if (c == 'k' || c == 'K')
|
|
num <<= 10LL;
|
|
else if (c == 'm' || c == 'M')
|
|
num <<= 20LL;
|
|
else if (c == 'g' || c == 'G')
|
|
num <<= 30LL;
|
|
else if (c == 't' || c == 'T')
|
|
num <<= 40LL;
|
|
}
|
|
|
|
return num;
|
|
}
|
|
|
|
int64_t ParseInt64(const std::string& value) {
|
|
size_t endchar;
|
|
#ifndef CYGWIN
|
|
int64_t num = std::stoll(value.c_str(), &endchar);
|
|
#else
|
|
char* endptr;
|
|
int64_t num = std::strtoll(value.c_str(), &endptr, 0);
|
|
endchar = endptr - value.c_str();
|
|
#endif
|
|
|
|
if (endchar < value.length()) {
|
|
char c = value[endchar];
|
|
if (c == 'k' || c == 'K')
|
|
num <<= 10LL;
|
|
else if (c == 'm' || c == 'M')
|
|
num <<= 20LL;
|
|
else if (c == 'g' || c == 'G')
|
|
num <<= 30LL;
|
|
else if (c == 't' || c == 'T')
|
|
num <<= 40LL;
|
|
}
|
|
|
|
return num;
|
|
}
|
|
|
|
int ParseInt(const std::string& value) {
|
|
size_t endchar;
|
|
#ifndef CYGWIN
|
|
int num = std::stoi(value.c_str(), &endchar);
|
|
#else
|
|
char* endptr;
|
|
int num = std::strtoul(value.c_str(), &endptr, 0);
|
|
endchar = endptr - value.c_str();
|
|
#endif
|
|
|
|
if (endchar < value.length()) {
|
|
char c = value[endchar];
|
|
if (c == 'k' || c == 'K')
|
|
num <<= 10;
|
|
else if (c == 'm' || c == 'M')
|
|
num <<= 20;
|
|
else if (c == 'g' || c == 'G')
|
|
num <<= 30;
|
|
}
|
|
|
|
return num;
|
|
}
|
|
|
|
double ParseDouble(const std::string& value) {
|
|
#ifndef CYGWIN
|
|
return std::stod(value);
|
|
#else
|
|
return std::strtod(value.c_str(), 0);
|
|
#endif
|
|
}
|
|
|
|
size_t ParseSizeT(const std::string& value) {
|
|
return static_cast<size_t>(ParseUint64(value));
|
|
}
|
|
|
|
std::vector<int> ParseVectorInt(const std::string& value) {
|
|
std::vector<int> result;
|
|
size_t start = 0;
|
|
while (start < value.size()) {
|
|
size_t end = value.find(':', start);
|
|
if (end == std::string::npos) {
|
|
result.push_back(ParseInt(value.substr(start)));
|
|
break;
|
|
} else {
|
|
result.push_back(ParseInt(value.substr(start, end - start)));
|
|
start = end + 1;
|
|
}
|
|
}
|
|
return result;
|
|
}
|
|
|
|
bool SerializeIntVector(const std::vector<int>& vec, std::string* value) {
|
|
*value = "";
|
|
for (size_t i = 0; i < vec.size(); ++i) {
|
|
if (i > 0) {
|
|
*value += ":";
|
|
}
|
|
*value += std::to_string(vec[i]);
|
|
}
|
|
return true;
|
|
}
|
|
|
|
// Copied from folly/string.cpp:
|
|
// https://github.com/facebook/folly/blob/0deef031cb8aab76dc7e736f8b7c22d701d5f36b/folly/String.cpp#L457
|
|
// There are two variants of `strerror_r` function, one returns
|
|
// `int`, and another returns `char*`. Selecting proper version using
|
|
// preprocessor macros portably is extremely hard.
|
|
//
|
|
// For example, on Android function signature depends on `__USE_GNU` and
|
|
// `__ANDROID_API__` macros (https://git.io/fjBBE).
|
|
//
|
|
// So we are using C++ overloading trick: we pass a pointer of
|
|
// `strerror_r` to `invoke_strerror_r` function, and C++ compiler
|
|
// selects proper function.
|
|
|
|
#if !(defined(_WIN32) && (defined(__MINGW32__) || defined(_MSC_VER)))
|
|
ROCKSDB_MAYBE_UNUSED
|
|
static std::string invoke_strerror_r(int (*strerror_r)(int, char*, size_t),
|
|
int err, char* buf, size_t buflen) {
|
|
// Using XSI-compatible strerror_r
|
|
int r = strerror_r(err, buf, buflen);
|
|
|
|
// OSX/FreeBSD use EINVAL and Linux uses -1 so just check for non-zero
|
|
if (r != 0) {
|
|
snprintf(buf, buflen, "Unknown error %d (strerror_r failed with error %d)",
|
|
err, errno);
|
|
}
|
|
return buf;
|
|
}
|
|
|
|
ROCKSDB_MAYBE_UNUSED
|
|
static std::string invoke_strerror_r(char* (*strerror_r)(int, char*, size_t),
|
|
int err, char* buf, size_t buflen) {
|
|
// Using GNU strerror_r
|
|
return strerror_r(err, buf, buflen);
|
|
}
|
|
#endif // !(defined(_WIN32) && (defined(__MINGW32__) || defined(_MSC_VER)))
|
|
|
|
std::string errnoStr(int err) {
|
|
char buf[1024];
|
|
buf[0] = '\0';
|
|
|
|
std::string result;
|
|
|
|
// https://developer.apple.com/library/mac/documentation/Darwin/Reference/ManPages/man3/strerror_r.3.html
|
|
// http://www.kernel.org/doc/man-pages/online/pages/man3/strerror.3.html
|
|
#if defined(_WIN32) && (defined(__MINGW32__) || defined(_MSC_VER))
|
|
// mingw64 has no strerror_r, but Windows has strerror_s, which C11 added
|
|
// as well. So maybe we should use this across all platforms (together
|
|
// with strerrorlen_s). Note strerror_r and _s have swapped args.
|
|
int r = strerror_s(buf, sizeof(buf), err);
|
|
if (r != 0) {
|
|
snprintf(buf, sizeof(buf),
|
|
"Unknown error %d (strerror_r failed with error %d)", err, errno);
|
|
}
|
|
result.assign(buf);
|
|
#else
|
|
// Using any strerror_r
|
|
result.assign(invoke_strerror_r(strerror_r, err, buf, sizeof(buf)));
|
|
#endif
|
|
|
|
return result;
|
|
}
|
|
|
|
} // namespace ROCKSDB_NAMESPACE
|
|
|