websocketpp::utf8_validator Namespace Reference

Classes
class	validator
	Provides streaming UTF8 validation functionality. More...

Functions
uint32_t	decode (uint32_t *state, uint32_t *codep, uint8_t byte)
	Decode the next byte of a UTF8 sequence.
bool	validate (std::string const &s)
	Validate a UTF8 string.

Function Documentation

decode()

uint32_t websocketpp::utf8_validator::decode ( uint32_t * state, uint32_t * codep, uint8_t byte )

inline

Parameters

[out]	state	The decoder state to advance
[out]	codep	The codepoint to fill in
[in]	byte	The byte to input

Returns

The ending state of the decode operation

Definition at line 69 of file utf8_validator.hpp.

                                                                         {
  uint32_t type = utf8d[byte];
 
  *codep = (*state != utf8_accept) ?
    (byte & 0x3fu) | (*codep << 6) :
    (0xff >> type) & (byte);
 
  *state = utf8d[256 + *state*16 + type];
  return *state;
}

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validate()

bool websocketpp::utf8_validator::validate ( std::string const & s )

inline

convenience function that creates a validator, validates a complete string and returns the result.

Definition at line 143 of file utf8_validator.hpp.

                                          {
    validator v;
    if (!v.decode(s.begin(),s.end())) {
        return false;
    }
    return v.complete();
}

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