some code from Parser moved to HeadersParser and to string_functions

git-svn-id: svn://ttmath.org/publicrep/libscorpiohttpserver/trunk@1056 e52654a7-88a9-db11-a3e9-0013d4bc506e
This commit is contained in:
Tomasz Sowa 2017-03-13 09:58:21 +00:00
parent c3afe35119
commit 103f4cbc12
10 changed files with 500 additions and 435 deletions

View File

@ -1,6 +1,6 @@
CXX = g++5
CXXFLAGS = -g3 -O0 -I/usr/local/include -std=c++11 -I../../pikotools
CXXFLAGS = -g3 -O0 -std=c++11 -pedantic -Wall -I/usr/local/include -I../../pikotools
o=$(patsubst %.cpp,%.o,$(wildcard *.cpp))
name=webserver
@ -32,6 +32,7 @@ webserver: $(o)
clean:
rm -f $(name)
cleanall: clean
@cd ../../pikotools && make clean

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@ -1,5 +1,7 @@
# DO NOT DELETE
client.o: client.h
main.o: ./server.h client.h
server.o: ./server.h client.h
headers_parser.o: headers_parser.h client.h string_functions.h
main.o: server.h client.h headers_parser.h
server.o: server.h client.h headers_parser.h string_functions.h
string_functions.o: string_functions.h

View File

@ -45,6 +45,7 @@ Client & Client::operator=(const Client & c)
in_buffer_max_len = c.in_buffer_max_len;
parsing_headers = c.parsing_headers;
parsing_first_header = c.parsing_first_header;
http_method_str = c.http_method_str;
http_method = c.http_method;
http_version = c.http_version;
url = c.url;
@ -81,6 +82,7 @@ void Client::PrepareToNewRequest()
output_buffer_sent = 0;
close_connection = false;
http_method_str.clear();
output_buffer.clear();
url.clear();
}

View File

@ -45,11 +45,6 @@ public:
bool close_connection;
char * in_buffer; // rename to a better name
size_t in_buffer_max_len; // at least two characters
size_t in_buffer_len;
std::string input_buffer;
std::string header;
@ -71,6 +66,16 @@ public:
void PrepareToNewRequest();
private:
char * in_buffer; // rename to a better name
size_t in_buffer_max_len; // at least two characters
size_t in_buffer_len;
std::wstring http_method_str;
friend class Server;
friend class HeadersParser;
};

301
src/headers_parser.cpp Normal file
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@ -0,0 +1,301 @@
#include <iostream>
#include <utf8/utf8.h>
#include "headers_parser.h"
#include "string_functions.h"
void HeadersParser::ParseHeaders(Client & client)
{
header_index = 0;
if( !ParseFirstHeader(client) )
{
std::cout << "incorrect first header, closing connection" << std::endl;
client.close_connection = true;
return;
}
// we are testing header_index + 3 < client.input_buffer.size() because we know
// that the \r\n\r\n sequence already exists in this string
// so there is no a problem that we leave some characters at the end of the string
while( header_index + 3 < client.input_buffer.size() &&
!IsHeadersEnding(client.input_buffer.c_str() + header_index) )
{
tmp_header.clear();
tmp_value.clear();
if( ParseHeaderKey(client) )
{
SkipWhite(client);
ParseHeaderValue(client);
TrimWhiteAtEnd(tmp_value);
std::wcout << L"wczytalem naglowek" << std::endl;
std::wcout << tmp_header << L"|" << std::endl;
std::wcout << tmp_value << L"|" << std::endl;
if( tmp_header.size() > 0 )
client.in.Add(tmp_header, tmp_value);
}
else
{
// add some code to skip this line
}
}
}
// ptr buffer should consists of at least more 3 characters
bool HeadersParser::IsHeadersEnding(const char * ptr)
{
return ptr[0] == '\r' && ptr[0+1] == '\n' &&
ptr[0+2] == '\r' && ptr[0+3] == '\n';
}
bool HeadersParser::ParseFirstHeader(Client & client)
{
return ParseFirstHeaderMethodName(client) &&
ParseFirstHeaderURL(client) &&
ParseFirstHeaderHTTPVersion(client);
}
bool HeadersParser::ParseFirstHeaderMethodName(Client & client)
{
wchar_t method_name[32];
size_t method_name_index = 0;
while( header_index < client.input_buffer.size() &&
client.input_buffer[header_index] != '\r' &&
!IsWhite(client.input_buffer[header_index]) )
{
wchar_t c = (unsigned char)client.input_buffer[header_index++];
method_name[method_name_index++] = c;
if( method_name_index >= sizeof(method_name) / sizeof(wchar_t) )
return false;
}
method_name[method_name_index++] = 0;
client.http_method_str = method_name;
SkipWhite(client);
return true;
}
/*
* The generic URI syntax mandates that new URI schemes that provide for the representation
* of character data in a URI must, in effect, represent characters from the unreserved set
* without translation, and should convert all other characters to bytes according to UTF-8,
* and then percent-encode those values. This requirement was introduced in January 2005
* with the publication of RFC 3986. URI schemes introduced before this date are not affected.
*
*
*/
bool HeadersParser::ParseFirstHeaderURL(Client & client)
{
client.url.clear();
url_ascii.clear();
while( header_index < client.input_buffer.size() &&
client.input_buffer[header_index] != '\r' &&
!IsWhite(client.input_buffer[header_index]) )
{
wchar_t c = (unsigned char)client.input_buffer[header_index++];
if( c == '+' )
{
c = ' ';
}
else
if( c == '%' )
{
if( header_index + 2 < client.input_buffer.size() )
{
wchar_t c1 = ToLower((unsigned char)client.input_buffer[header_index++]);
wchar_t c2 = ToLower((unsigned char)client.input_buffer[header_index++]);
if( IsHexDigit(c1) && IsHexDigit(c2) )
{
int v1 = HexDigitToValue(c1);
int v2 = HexDigitToValue(c2);
c = static_cast<wchar_t>((v1 << 4) + v2);
}
else
{
return false;
}
}
else
{
return false;
}
}
else
if( c < 32 || c > 127 )
{
return false;
}
url_ascii += static_cast<char>(c);
}
bool utf8_correct = PT::UTF8ToWide(url_ascii, client.url);
SkipWhite(client);
url_ascii.clear();
return utf8_correct && !client.url.empty();
}
bool HeadersParser::ParseFirstHeaderHTTPVersion(Client & client)
{
client.http_version = http_version_unsupported;
if( header_index + 7 < client.input_buffer.size() &&
client.input_buffer[header_index] == 'H' &&
client.input_buffer[header_index + 1] == 'T' &&
client.input_buffer[header_index + 2] == 'T' &&
client.input_buffer[header_index + 3] == 'P' &&
client.input_buffer[header_index + 4] == '/' &&
IsDecDigit(client.input_buffer[header_index + 5]) &&
client.input_buffer[header_index + 6] == '.' &&
IsDecDigit(client.input_buffer[header_index + 7]) )
{
int d1 = client.input_buffer[header_index + 5] - '0';
int d2 = client.input_buffer[header_index + 7] - '0';
int ddd1 = client.input_buffer[header_index + 5] - '0';
int ddd2 = client.input_buffer[header_index + 7] - '0';
if( d1 == 1 )
{
client.http_version = http_version_1_0;
}
if( d2 == 1 )
{
client.http_version = http_version_1_1;
}
if( ddd1 == 1 )
{
client.http_version = http_version_1_0;
}
if( ddd2 == 1 )
{
client.http_version = http_version_1_1;
}
if( d1 == 1 )
{
if( d2 == 0 )
client.http_version = http_version_1_0;
else
if( d2 == 1 )
client.http_version = http_version_1_1;
}
header_index += 8;
SkipWhite(client);
}
return client.http_version != http_version_unsupported;
}
// ParseHeaderKey should increment header_index at least once
bool HeadersParser::ParseHeaderKey(Client & client)
{
while( header_index < client.input_buffer.size() &&
client.input_buffer[header_index] != '\r' )
{
if( client.input_buffer[header_index] == ':' )
{
header_index += 1;
return true;
}
wchar_t c = (unsigned char)client.input_buffer[header_index];
if( c >= 32 && c < 127 )
{
// allow only asci characters
tmp_header += c;
}
header_index += 1;
}
// there was not a colon at the end of the name
header_index += 1;
return false;
}
void HeadersParser::ParseHeaderValue(Client & client)
{
while( header_index < client.input_buffer.size() )
{
if( header_index + 1 < client.input_buffer.size() &&
client.input_buffer[header_index] == '\r' &&
client.input_buffer[header_index+1] == '\n' )
{
if( header_index + 2 < client.input_buffer.size() &&
(client.input_buffer[header_index+2] == ' ' ||
client.input_buffer[header_index+2] == '\t') )
{
// this line will be continued in the next line
header_index += 3;
}
else
{
header_index += 2;
break;
}
}
else
{
wchar_t c = (unsigned char)client.input_buffer[header_index];
if( c >= 32 && c < 127 )
{
// allow only ascii characters
tmp_value += c;
}
header_index += 1;
}
}
}
void HeadersParser::SkipWhite(Client & client)
{
while( header_index < client.input_buffer.size() &&
IsWhite(client.input_buffer[header_index]) )
{
header_index += 1;
}
}

37
src/headers_parser.h Normal file
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@ -0,0 +1,37 @@
#ifndef headerfile_libscorpiohttpserver_src_headers_parser_h
#define headerfile_libscorpiohttpserver_src_headers_parser_h
#include "client.h"
class HeadersParser
{
public:
void ParseHeaders(Client & client);
bool IsHeadersEnding(const char * ptr);
private:
size_t header_index;
std::wstring tmp_header, tmp_value;
std::string url_ascii;
bool ParseFirstHeader(Client & client);
bool ParseFirstHeaderMethodName(Client & client);
bool ParseFirstHeaderURL(Client & client);
bool ParseFirstHeaderHTTPVersion(Client & client);
bool ParseHeaderKey(Client & client);
void ParseHeaderValue(Client & client);
void SkipWhite(Client & client);
};
#endif

View File

@ -8,7 +8,7 @@
#include <fcntl.h>
#include <utf8/utf8.h>
#include "server.h"
#include "string_functions.h"
@ -16,7 +16,6 @@ Server::Server()
{
main_socket = -1;
close_server = false;
header_index = 0;
}
Server::~Server()
@ -124,7 +123,7 @@ void Server::Wait()
}
else
{
ReadInputFromClients();
ReadWriteToClients();
}
}
}
@ -207,8 +206,7 @@ int optval;
}
// change to a better name as it is used to write to a client too
void Server::ReadInputFromClients()
void Server::ReadWriteToClients()
{
size_t i = 0;
@ -257,6 +255,8 @@ void Server::ReadInputFromClient(Client & client)
char * old_pointer = client.in_buffer + client.in_buffer_len;
// after adding to client.input_buffer we set in_buffer_len to 0
// so here is sufficient client.in_buffer (without adding client.in_buffer_len)
int read_len = read(client.socket, client.in_buffer + client.in_buffer_len, client.in_buffer_max_len - client.in_buffer_len - 1);
if( read_len < 0 )
@ -265,8 +265,6 @@ void Server::ReadInputFromClient(Client & client)
std::cout << "read failed" << std::endl;
client.close_connection = true;
//RemoveClientSocket(client.socket);
// do not use client reference anymore
}
else
if( read_len == 0 )
@ -354,9 +352,16 @@ void Server::CheckHeaders(Client & client, size_t input_buffer_index)
for( ; input_buffer_index + 3 < client.input_buffer.size() ; ++input_buffer_index)
{
if( IsHeadersEnding(client.input_buffer.c_str() + input_buffer_index) )
if( headers_parser.IsHeadersEnding(client.input_buffer.c_str() + input_buffer_index) )
{
ParseHeaders(client);
headers_parser.ParseHeaders(client);
if( !SelectMethodName(client, client.http_method_str) )
{
std::cout << "unsupported http method" << std::endl;
client.close_connection = true;
}
client.parsing_headers = false;
client.input_buffer.erase(0, input_buffer_index + 4);
@ -377,87 +382,11 @@ void Server::CheckHeaders(Client & client, size_t input_buffer_index)
}
// ptr buffer should consists of at least more 3 characters
bool Server::IsHeadersEnding(const char * ptr)
{
return ptr[0] == '\r' && ptr[0+1] == '\n' &&
ptr[0+2] == '\r' && ptr[0+3] == '\n';
}
void Server::ParseHeaders(Client & client)
{
header_index = 0;
if( !ParseFirstHeader(client) )
{
std::cout << "incorrect first header, closing connection" << std::endl;
client.close_connection = true;
return;
}
// we are testing header_index + 3 < client.input_buffer.size() because we know
// that the \r\n\r\n sequence already exists in this string
// so there is no a problem that we leave some characters at the end of the string
while( header_index + 3 < client.input_buffer.size() &&
!IsHeadersEnding(client.input_buffer.c_str() + header_index) )
{
tmp_header.clear();
tmp_value.clear();
if( ParseHeaderKey(client) )
{
SkipWhite(client);
ParseHeaderValue(client);
TrimWhiteAtEnd(tmp_value);
std::wcout << L"wczytalem naglowek" << std::endl;
std::wcout << tmp_header << L"|" << std::endl;
std::wcout << tmp_value << L"|" << std::endl;
if( tmp_header.size() > 0 )
client.in.Add(tmp_header, tmp_value);
}
else
{
// add some code to skip this line
}
}
}
bool Server::ParseFirstHeader(Client & client)
{
return ParseFirstHeaderMethodName(client) &&
ParseFirstHeaderURL(client) &&
ParseFirstHeaderHTTPVersion(client);
}
bool Server::ParseFirstHeaderMethodName(Client & client)
{
wchar_t method_name[32];
size_t method_name_index = 0;
while( header_index < client.input_buffer.size() &&
client.input_buffer[header_index] != '\r' &&
!IsWhite(client.input_buffer[header_index]) )
{
wchar_t c = (unsigned char)client.input_buffer[header_index++];
method_name[method_name_index++] = c;
if( method_name_index >= sizeof(method_name) / sizeof(wchar_t) )
return false;
}
method_name[method_name_index++] = 0;
SkipWhite(client);
return SelectMethodName(client, method_name);
}
bool Server::SelectMethodName(Client & client, wchar_t * method_name)
bool Server::SelectMethodName(Client & client, const std::wstring & method_name)
{
client.http_method = http_method_unsupported;
@ -490,202 +419,9 @@ bool Server::SelectMethodName(Client & client, wchar_t * method_name)
}
/*
* The generic URI syntax mandates that new URI schemes that provide for the representation
* of character data in a URI must, in effect, represent characters from the unreserved set
* without translation, and should convert all other characters to bytes according to UTF-8,
* and then percent-encode those values. This requirement was introduced in January 2005
* with the publication of RFC 3986. URI schemes introduced before this date are not affected.
*
*
*/
bool Server::ParseFirstHeaderURL(Client & client)
{
client.url.clear();
url_ascii.clear();
while( header_index < client.input_buffer.size() &&
client.input_buffer[header_index] != '\r' &&
!IsWhite(client.input_buffer[header_index]) )
{
wchar_t c = (unsigned char)client.input_buffer[header_index++];
if( c == '+' )
{
c = ' ';
}
else
if( c == '%' )
{
if( header_index + 2 < client.input_buffer.size() )
{
wchar_t c1 = ToLower((unsigned char)client.input_buffer[header_index++]);
wchar_t c2 = ToLower((unsigned char)client.input_buffer[header_index++]);
if( IsHexDigit(c1) && IsHexDigit(c2) )
{
int v1 = HexDigitToValue(c1);
int v2 = HexDigitToValue(c2);
c = static_cast<wchar_t>((v1 << 4) + v2);
}
else
{
return false;
}
}
else
{
return false;
}
}
else
if( c < 32 || c > 127 )
{
return false;
}
url_ascii += static_cast<char>(c);
}
bool utf8_correct = PT::UTF8ToWide(url_ascii, client.url);
SkipWhite(client);
url_ascii.clear();
return utf8_correct && !client.url.empty();
}
bool Server::ParseFirstHeaderHTTPVersion(Client & client)
{
client.http_version = http_version_unsupported;
if( header_index + 7 < client.input_buffer.size() &&
client.input_buffer[header_index] == 'H' &&
client.input_buffer[header_index + 1] == 'T' &&
client.input_buffer[header_index + 2] == 'T' &&
client.input_buffer[header_index + 3] == 'P' &&
client.input_buffer[header_index + 4] == '/' &&
IsDecDigit(client.input_buffer[header_index + 5]) &&
client.input_buffer[header_index + 6] == '.' &&
IsDecDigit(client.input_buffer[header_index + 7]) )
{
int d1 = client.input_buffer[header_index + 5] - '0';
int d2 = client.input_buffer[header_index + 7] - '0';
int ddd1 = client.input_buffer[header_index + 5] - '0';
int ddd2 = client.input_buffer[header_index + 7] - '0';
if( d1 == 1 )
{
client.http_version = http_version_1_0;
}
if( d2 == 1 )
{
client.http_version = http_version_1_1;
}
if( ddd1 == 1 )
{
client.http_version = http_version_1_0;
}
if( ddd2 == 1 )
{
client.http_version = http_version_1_1;
}
if( d1 == 1 )
{
if( d2 == 0 )
client.http_version = http_version_1_0;
else
if( d2 == 1 )
client.http_version = http_version_1_1;
}
header_index += 8;
SkipWhite(client);
}
return client.http_version != http_version_unsupported;
}
// ParseHeaderKey should increment header_index at least once
bool Server::ParseHeaderKey(Client & client)
{
while( header_index < client.input_buffer.size() &&
client.input_buffer[header_index] != '\r' )
{
if( client.input_buffer[header_index] == ':' )
{
header_index += 1;
return true;
}
wchar_t c = (unsigned char)client.input_buffer[header_index];
if( c >= 32 && c < 127 )
{
// allow only asci characters
tmp_header += c;
}
header_index += 1;
}
// there was not a colon at the end of the name
header_index += 1;
return false;
}
void Server::ParseHeaderValue(Client & client)
{
while( header_index < client.input_buffer.size() )
{
if( header_index + 1 < client.input_buffer.size() &&
client.input_buffer[header_index] == '\r' &&
client.input_buffer[header_index+1] == '\n' )
{
if( header_index + 2 < client.input_buffer.size() &&
(client.input_buffer[header_index+2] == ' ' ||
client.input_buffer[header_index+2] == '\t') )
{
// this line will be continued in the next line
header_index += 3;
}
else
{
header_index += 2;
break;
}
}
else
{
wchar_t c = (unsigned char)client.input_buffer[header_index];
if( c >= 32 && c < 127 )
{
// allow only ascii characters
tmp_value += c;
}
header_index += 1;
}
}
}
//void Server::RemoveClientSocket(int client_socket)
//{
@ -696,7 +432,7 @@ void Server::ParseHeaderValue(Client & client)
// close(client_socket);
// client_tab.erase(client_tab.begin() + i);
//
// // warning: in ReadInputFromClients we have a loop through client_tab
// // warning: in ReadWriteToClients we have a loop through client_tab
// // (next item will be skipped by ++i)
// break;
// }
@ -704,101 +440,6 @@ void Server::ParseHeaderValue(Client & client)
//}
bool Server::IsDecDigit(wchar_t c)
{
if( c >= '0' && c <= '9' )
return true;
return false;
}
bool Server::IsHexDigit(wchar_t c)
{
if( c >= '0' && c <= '9' )
return true;
if( ToLower(c) >= 'a' && ToLower(c) <= 'f' )
return true;
return false;
}
int Server::HexDigitToValue(wchar_t c)
{
if( c >= '0' && c <= '9' )
return static_cast<int>(c - '0');
if( ToLower(c) >= 'a' && ToLower(c) <= 'f' )
return static_cast<int>(c - 'a') + 10;
return 0;
}
wchar_t Server::ToLower(wchar_t c)
{
if( c >= 'A' && c <= 'Z' )
c = c - 'A' + 'a';
return c;
}
bool Server::CompareNoCase(const wchar_t * str1, const wchar_t * str2)
{
while( *str1 && *str2 && ToLower(*str1) == ToLower(*str2) )
{
++str1;
++str2;
}
if( *str1 == 0 && *str2 == 0 )
return true;
return false;
}
bool Server::CompareNoCase(const std::wstring & str1, const wchar_t * str2)
{
return CompareNoCase(str1.c_str(), str2);
}
// do not use \r or \n here
bool Server::IsWhite(wchar_t c)
{
return (c == ' ' || c == '\t');
}
void Server::TrimWhiteAtEnd(std::wstring & str)
{
if( !str.empty() )
{
size_t i = str.size();
while( i > 0 && IsWhite(str[i-1]) )
{
i -= 1;
}
if( i < str.size() )
str.erase(i);
}
}
void Server::SkipWhite(Client & client)
{
while( header_index < client.input_buffer.size() &&
IsWhite(client.input_buffer[header_index]) )
{
header_index += 1;
}
}
void Server::CreateAnswer(Client & client)
@ -809,6 +450,7 @@ void Server::CreateAnswer(Client & client)
a += L"Content-Type: text/html; charset=UTF-8\r\n";
a += L"\r\n";
a += L"hello world from my webserwer, your requested: " + client.url;
a += L"\r\n";
if( client.url == L"/quit" )
{

View File

@ -4,6 +4,7 @@
#include <sys/select.h>
#include "client.h"
#include "headers_parser.h"
@ -30,74 +31,25 @@ private:
std::vector<Client> client_tab;
int main_socket;
fd_set read_set, write_set;
std::wstring tmp_header, tmp_value;
size_t header_index;
std::string url_ascii;
bool close_server;
HeadersParser headers_parser;
int AddSocketsToSet();
void AddNewClient();
// change to a better name as it is used to write to a client too
void ReadInputFromClients();
void ReadWriteToClients();
void ReadInputFromClient(Client & client);
void WriteOutputToClient(Client & client);
void CheckHeaders(Client & client, size_t input_buffer_index);
// ptr buffer should consists of at least more 3 characters
bool IsHeadersEnding(const char * ptr);
void ParseHeaders(Client & client);
bool ParseFirstHeader(Client & client);
bool ParseFirstHeaderMethodName(Client & client);
virtual bool SelectMethodName(Client & client, wchar_t * method_name);
/*
* The generic URI syntax mandates that new URI schemes that provide for the representation
* of character data in a URI must, in effect, represent characters from the unreserved set
* without translation, and should convert all other characters to bytes according to UTF-8,
* and then percent-encode those values. This requirement was introduced in January 2005
* with the publication of RFC 3986. URI schemes introduced before this date are not affected.
*
*
*/
bool ParseFirstHeaderURL(Client & client);
bool ParseFirstHeaderHTTPVersion(Client & client);
// ParseHeaderKey should increment header_index at least once
bool ParseHeaderKey(Client & client);
void ParseHeaderValue(Client & client);
virtual bool SelectMethodName(Client & client, const std::wstring & method_name);
//void RemoveClientSocket(int client_socket);
bool IsDecDigit(wchar_t c);
bool IsHexDigit(wchar_t c);
int HexDigitToValue(wchar_t c);
wchar_t ToLower(wchar_t c);
bool CompareNoCase(const wchar_t * str1, const wchar_t * str2);
bool CompareNoCase(const std::wstring & str1, const wchar_t * str2);
// do not use \r or \n here
bool IsWhite(wchar_t c);
void TrimWhiteAtEnd(std::wstring & str);
void SkipWhite(Client & client);
virtual void CreateAnswer(Client & client);

94
src/string_functions.cpp Normal file
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@ -0,0 +1,94 @@
#include <utf8/utf8.h>
#include "string_functions.h"
wchar_t ToLower(wchar_t c)
{
if( c >= 'A' && c <= 'Z' )
c = c - 'A' + 'a';
return c;
}
bool CompareNoCase(const wchar_t * str1, const wchar_t * str2)
{
while( *str1 && *str2 && ToLower(*str1) == ToLower(*str2) )
{
++str1;
++str2;
}
if( *str1 == 0 && *str2 == 0 )
return true;
return false;
}
bool CompareNoCase(const std::wstring & str1, const wchar_t * str2)
{
return CompareNoCase(str1.c_str(), str2);
}
bool IsDecDigit(wchar_t c)
{
if( c >= '0' && c <= '9' )
return true;
return false;
}
bool IsHexDigit(wchar_t c)
{
if( c >= '0' && c <= '9' )
return true;
if( ToLower(c) >= 'a' && ToLower(c) <= 'f' )
return true;
return false;
}
int HexDigitToValue(wchar_t c)
{
if( c >= '0' && c <= '9' )
return static_cast<int>(c - '0');
if( ToLower(c) >= 'a' && ToLower(c) <= 'f' )
return static_cast<int>(c - 'a') + 10;
return 0;
}
// do not use \r or \n here
bool IsWhite(wchar_t c)
{
return (c == ' ' || c == '\t');
}
void TrimWhiteAtEnd(std::wstring & str)
{
if( !str.empty() )
{
size_t i = str.size();
while( i > 0 && IsWhite(str[i-1]) )
{
i -= 1;
}
if( i < str.size() )
str.erase(i);
}
}

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src/string_functions.h Normal file
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#ifndef headerfile_libscorpiohttpserver_src_string_functions_h
#define headerfile_libscorpiohttpserver_src_string_functions_h
#include <string>
wchar_t ToLower(wchar_t c);
bool CompareNoCase(const wchar_t * str1, const wchar_t * str2);
bool CompareNoCase(const std::wstring & str1, const wchar_t * str2);
bool IsDecDigit(wchar_t c);
bool IsHexDigit(wchar_t c);
int HexDigitToValue(wchar_t c);
bool IsWhite(wchar_t c);
void TrimWhiteAtEnd(std::wstring & str);
#endif