parseInt() [2/2]

int fl::parseInt	(	const char *	str,
		fl::size	len )

Parse an integer from a character buffer.

Parameters

str	The character buffer to parse
len	The length of the buffer

Returns

The parsed integer value (0 if parsing fails)

Definition at line 253 of file charconv.cpp.hpp.

                                                       {
    // Unsigned magnitude can represent abs(INT_MIN) without signed overflow.
    unsigned int result = 0;
    int sign = 1;
    fl::size pos = 0;
 
    // Handle empty input
    if (len == 0) {
        return 0;
    }
 
    // Skip leading whitespace
    while (pos < len &&
           (str[pos] == ' ' || str[pos] == '\t' || str[pos] == '\n' ||
            str[pos] == '\r' || str[pos] == '\f' || str[pos] == '\v')) {
        pos++;
    }
 
    // Handle optional sign
    if (pos < len && str[pos] == '-') {
        sign = -1;
        pos++;
    } else if (pos < len && str[pos] == '+') {
        pos++;
    }
 
    // Parse digits
    while (pos < len && str[pos] >= '0' && str[pos] <= '9') {
        result = result * 10u + static_cast<unsigned int>(str[pos] - '0');
        pos++;
    }
 
    return static_cast<int>(sign < 0 ? 0u - result : result);
}

References FL_NO_EXCEPT, pos, and sign().

Referenced by fl::HttpRequestParser::feed(), fl::HttpResponseParser::feed(), fl::anonymous_namespace{json.cpp.hpp}::JsonBuilder::on_token(), fl::int_conversion_visitor< IntType >::operator()(), fl::int_conversion_visitor< i64 >::operator()(), fl::anonymous_namespace{json.cpp.hpp}::JsonBuilder::parse_float_array(), fl::anonymous_namespace{json.cpp.hpp}::JsonBuilder::parse_int_array(), parseInt(), fl::HttpResponseParser::parseStatusLine(), and fl::anonymous_namespace{json.cpp.hpp}::JsonTokenizer::scan_array_lookahead().

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