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Copy pathUtils.cpp
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461 lines (359 loc) · 8.88 KB
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#include "Utils.h"
#include <array>
#include <cstring>
#include <iomanip>
namespace Utils
{
void trim(std::string &str)
{
const size_t last = str.find_last_not_of(" \t\n\v\f\r");
if (std::string::npos == last)
{
return str.clear();
}
str.assign(str.cbegin() + str.find_first_not_of(" \t\n\v\f\r"), str.cbegin() + last + 1);
}
std::vector<std::string> explode(const std::string &str, const char sep)
{
std::vector<std::string> values;
for (size_t pos = 0; std::string::npos != pos;)
{
size_t delimiter = str.find(sep, pos);
std::string value = str.substr(pos, delimiter);
trim(value);
values.emplace_back(std::move(value) );
pos = delimiter;
if (std::string::npos != pos)
{
++pos;
}
}
return values;
}
std::string encodeHtmlSymbols(const std::string &str)
{
std::string buf;
buf.reserve(str.length() );
for (size_t pos = 0; pos < str.length(); ++pos)
{
switch (str[pos])
{
case '&': buf.append("&"); break;
case '\"': buf.append("""); break;
case '\'': buf.append("'"); break;
case '<': buf.append("<"); break;
case '>': buf.append(">"); break;
default: buf.push_back(str[pos]); break;
}
}
return buf;
}
std::string binToHexString(const char *binData, const size_t dataSize)
{
std::string str(dataSize * 2, 0);
const uint8_t *bin = reinterpret_cast<const uint8_t *>(binData);
const char hexDigits[] = { "0123456789abcdef" };
for (size_t i = dataSize - 1; std::numeric_limits<size_t>::max() != i; --i)
{
str[(i << 1) + 0] = hexDigits[bin[i] >> 4];
str[(i << 1) + 1] = hexDigits[bin[i] & 0x0F];
}
return str;
}
static unsigned char hexStringToBinEncodeSymbol(const char c)
{
if (c >= '0' && c <= '9')
{
return c - 0x30;
}
else if (c >= 'a' && c <= 'f')
{
return c - 0x57;
}
else if (c >= 'A' && c <= 'F')
{
return c - 0x37;
}
return 0;
}
std::string hexStringToBin(const std::string &hexStr)
{
std::string bin(hexStr.length() / 2, 0);
for (size_t i = 0; i < bin.length(); ++i)
{
char a = hexStr[(i << 1) + 0];
char b = hexStr[(i << 1) + 1];
bin[i] = (
(hexStringToBinEncodeSymbol(a) << 4) | hexStringToBinEncodeSymbol(b)
);
}
return bin;
}
unsigned long long htonll(const unsigned long long src)
{
enum Endianness {
INIT = 0,
LITE = 1,
BIGE = 2
};
static int endian = Endianness::INIT;
union {
unsigned long long ull;
unsigned char c[8];
} x;
if (endian == Endianness::INIT)
{
x.ull = 0x01;
endian = (x.c[7] == 0x01ULL) ? Endianness::BIGE : Endianness::LITE;
}
if (endian == Endianness::BIGE)
{
return src;
}
x.ull = src;
unsigned char c;
c = x.c[0]; x.c[0] = x.c[7]; x.c[7] = c;
c = x.c[1]; x.c[1] = x.c[6]; x.c[6] = c;
c = x.c[2]; x.c[2] = x.c[5]; x.c[5] = c;
c = x.c[3]; x.c[3] = x.c[4]; x.c[4] = c;
return x.ull;
}
std::string getUniqueName()
{
size_t time = std::chrono::high_resolution_clock::now().time_since_epoch().count();
time = htonll(time);
return binToHexString(reinterpret_cast<const char *>(&time), sizeof(time) );
}
char *stlStringToPChar(const std::string &str)
{
const size_t length = str.length();
char *s = nullptr;
if (length)
{
s = new char[length + 1];
#ifdef WIN32
::strcpy_s(s, length + 1, str.c_str() );
#elif POSIX
::strcpy(s, str.c_str() );
s[length] = '\0';
#else
#error "Undefine platform"
#endif
}
return s;
}
void filesIncomingToRawFilesInfo(Utils::raw_fileinfo *raw[], const std::unordered_multimap<std::string, HttpServer::FileIncoming> &map)
{
if (raw && map.size() )
{
raw_fileinfo *arr = new raw_fileinfo[map.size()];
*raw = arr;
size_t i = 0;
for (auto it = map.cbegin(); map.cend() != it; ++it, ++i)
{
arr[i].key = stlStringToPChar(it->first);
const HttpServer::FileIncoming &file = it->second;
arr[i].file_name = stlStringToPChar(file.getName() );
arr[i].file_type = stlStringToPChar(file.getType() );
arr[i].file_size = file.getSize();
}
}
}
void rawFilesInfoToFilesIncoming(std::unordered_multimap<std::string, HttpServer::FileIncoming> &map, const Utils::raw_fileinfo raw[], const size_t count)
{
for (size_t i = 0; i < count; ++i)
{
map.emplace(raw[i].key ? raw[i].key : "", HttpServer::FileIncoming(raw[i].file_name, raw[i].file_type, raw[i].file_size) );
}
}
void destroyRawPairs(Utils::raw_pair raw[], const size_t count)
{
if (raw)
{
for (size_t i = 0; i < count; ++i)
{
raw_pair &cur = raw[i];
delete[] cur.key;
delete[] cur.value;
}
delete[] raw;
}
}
void destroyRawFilesInfo(Utils::raw_fileinfo raw[], const size_t count)
{
if (raw)
{
for (size_t i = 0; i < count; ++i)
{
raw_fileinfo &cur = raw[i];
delete[] cur.key;
delete[] cur.file_name;
delete[] cur.file_type;
}
delete[] raw;
}
}
time_t stringTimeToTimestamp(const std::string &strTime)
{
/* static const std::unordered_map<std::string, int> map_days {
{"Sun", 0}, {"Mon", 1}, {"Tue", 2}, {"Wed", 3}, {"Thu", 4}, {"Fri", 5}, {"Sat", 6}
};*/
static const std::unordered_map<std::string, int> map_months {
{"Jan", 0}, {"Feb", 1}, {"Mar", 2}, {"Apr", 3}, {"May", 4}, {"Jun", 5}, {"Jul", 6}, {"Aug", 7}, {"Sep", 8}, {"Oct", 9}, {"Nov", 10}, {"Dec", 11}
};
if (strTime.length() > 64)
{
return (time_t) ~0;
}
const size_t str_mon_length = 64;
std::vector<char> s_mon(str_mon_length);
struct ::tm tc = {0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0};
// Parse RFC 822
#ifdef WIN32
if (~0 != ::sscanf_s(strTime.c_str(), "%*s %d %3s %d %d:%d:%d", &tc.tm_mday, s_mon.data(), s_mon.size(), &tc.tm_year, &tc.tm_hour, &tc.tm_min, &tc.tm_sec) )
#else
if (~0 != ::sscanf(strTime.c_str(), "%*s %d %3s %d %d:%d:%d", &tc.tm_mday, s_mon.data(), &tc.tm_year, &tc.tm_hour, &tc.tm_min, &tc.tm_sec) )
#endif
{
tc.tm_year -= 1900;
auto it_mon = map_months.find(s_mon.data() );
if (map_months.cend() != it_mon)
{
tc.tm_mon = it_mon->second;
}
}
tc.tm_isdst = -1;
return ::mktime(&tc);
}
std::string getDatetimeAsString(const ::time_t tTime, const bool isGmtTime)
{
std::array<char, 64> buf;
::time_t cur_time = tTime;
if ( (time_t)~0 == tTime)
{
::time(&cur_time);
}
#ifdef WIN32
struct ::tm stm = {0};
if (isGmtTime)
{
::localtime_s(&stm, &cur_time);
}
else
{
::gmtime_s(&stm, &cur_time);
}
// RFC 822
::strftime(buf.data(), buf.size(), "%a, %d %b %Y %H:%M:%S GMT", &stm);
#else
struct ::tm *ptm = isGmtTime ? localtime(&cur_time) : gmtime(&cur_time);
// RFC 822
::strftime(buf.data(), buf.size(), "%a, %d %b %G %H:%M:%S GMT", ptm);
#endif
return std::string(buf.data() );
}
size_t getNumberLength(const size_t number)
{
size_t length = 0;
size_t n = number;
do
{
++length;
n /= 10;
}
while (n);
return length;
}
bool parseCookies(const std::string &cookieHeader, std::unordered_multimap<std::string, std::string> &cookies)
{
if (cookieHeader.empty() )
{
return false;
}
for (size_t cur_pos = 0, next_value; std::string::npos != cur_pos; cur_pos = next_value)
{
next_value = cookieHeader.find(';', cur_pos);
size_t delimiter = cookieHeader.find('=', cur_pos);
if (std::string::npos == delimiter || delimiter > next_value)
{
return false;
}
std::string key = cookieHeader.substr(cur_pos, delimiter - cur_pos);
trim(key);
key = urlDecode(key);
++delimiter;
std::string value = cookieHeader.substr(delimiter, std::string::npos != next_value ? next_value - delimiter : next_value);
trim(value);
value = urlDecode(value);
cookies.emplace(std::move(key), std::move(value) );
if (std::string::npos != next_value)
{
++next_value;
}
}
return true;
}
inline bool isUrlAllowed(const std::string::value_type c)
{
static const std::string special("-_.~");
return std::string::npos != special.find(c);
}
std::string urlEncode(const std::string &str)
{
std::ostringstream encoded;
encoded.fill('0');
encoded << std::hex;
for (auto it = str.cbegin(); str.cend() != it; ++it)
{
const std::string::value_type &c = *it;
if (' ' == c)
{
encoded << '+';
}
else if (std::isalnum(c) || isUrlAllowed(c) )
{
encoded << c;
}
else
{
encoded << '%' << std::setw(2) << (int) ( (unsigned char) c);
}
}
return encoded.str();
}
std::string urlDecode(const std::string &str)
{
std::string decoded;
std::string::value_type ch[3] = {0};
for (auto it = str.cbegin(); str.cend() != it; ++it)
{
const std::string::value_type &c = *it;
if ('%' == c)
{
++it;
if (str.cend() == it)
{
break;
}
ch[0] = *it;
++it;
if (str.cend() == it)
{
break;
}
ch[1] = *it;
decoded.push_back(strtoul(ch, nullptr, 16) );
}
else if ('+' == c)
{
decoded.push_back(' ');
}
else
{
decoded.push_back(c);
}
}
return decoded;
}
};