std::string valueToQuotedString( const char *value )
{
// Not sure how to handle unicode...
if( strpbrk(value, "\"\\\b\f\n\r\t") == NULL)
return std::string("\"") + value + "\"";
// We have to walk value and escape any special characters.
// Appending to std::string is not efficient, but this should be rare.
// (Note: forward slashes are *not* rare, but I am not escaping them.)
unsigned maxsize = strlen(value)*2 + 3; // allescaped+quotes+NULL
std::string result;
result.reserve(maxsize); // to avoid lots of mallocs
result += "\"";
for (const char* c=value; *c != 0; ++c)
{
if( IsGB(*c) )//支持中文，例如""
{
result += *c;
c++;
if( 0 == (*c) )
break;
result += *c;
continue;
}
switch(*c)
{
case '\"':
result += "\\\"";
break;
case '\\':
result += "\\\\";
break;
case '\b':
result += "\\b";
break;
case '\f':
result += "\\f";
break;
case '\n':
result += "\\n";
break;
case '\r':
result += "\\r";
break;
case '\t':
result += "\\t";
break;
case '/':
// Even though \/ is considered a legal escape in JSON, a bare
// slash is also legal, so I see no reason to escape it.
// (I hope I am not misunderstanding something.)
default:
result += *c;
}
}
result += "\"";
return result;
}
HZ get_hz()
{
unsigned char char1, char2;
HZ hz;
if (1 != fscanf_s(stdin, "%c", &char1, sizeof(char)))
return END;
if (char1 < 0xa0)
return TERMINAL;
if (1 != fscanf_s(stdin, "%c", &char2, sizeof(char)))
return END;
hz = char2 * 256 + char1;
if (IsGB(hz))
return hz;
return TERMINAL;
}
