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/* File: utf8stringview.c; Copyright and License: see below */
#include "utf8stringbuf/utf8stringview.h"
#include "utf8stringbuf/utf8stringbuf.h"
#include "utf8stringbuf/utf8string.h"
#ifdef __cplusplus
extern "C" {
#endif
utf8error_t utf8stringview_parse_int( const utf8stringview_t *this_, int64_t *out_number, utf8stringview_t *out_remainder )
{
assert( out_number != NULL );
utf8error_t result = UTF8ERROR_SUCCESS;
/* the maximum int64 decimal presentation is 20 characters: -9223372036854775808 */
/* adding some buffer for leading zeros and spaces... */
char number_arr[40] = "";
utf8stringbuf_t number_buf = UTF8STRINGBUF( number_arr );
result |= utf8stringbuf_copy_view( &number_buf, this_ );
/* it is ok if not all characters could be copied, a number cannot be longer than 39 characters. */
result = UTF8ERROR_SUCCESS;
unsigned int byte_length = 0;
result |= utf8string_parse_int( utf8stringbuf_get_string( &number_buf ), &byte_length, out_number );
assert( byte_length <= (*this_).length );
if ( out_remainder != NULL )
{
*out_remainder = (utf8stringview_t){ .start = (*this_).start + byte_length, .length = (*this_).length - byte_length };
}
return result;
}
utf8error_t utf8stringview_parse_float( const utf8stringview_t *this_, double *out_number, utf8stringview_t *out_remainder )
{
assert( out_number != NULL );
utf8error_t result = UTF8ERROR_SUCCESS;
/* the maximum double 64 decimal presentation in e-notation is 23 characters: -2.2250738585072014E-308 */
/* adding some buffer for leading zeros, spaces, additional accuracy and non-e-notation */
char number_arr[80] = "";
utf8stringbuf_t number_buf = UTF8STRINGBUF( number_arr );
result |= utf8stringbuf_copy_view( &number_buf, this_ );
/* it is ok if not all characters could be copied, a float number cannot be longer than 79 characters. */
result = UTF8ERROR_SUCCESS;
unsigned int byte_length = 0;
result |= utf8string_parse_float( utf8stringbuf_get_string( &number_buf ), &byte_length, out_number );
assert( byte_length <= (*this_).length );
if ( out_remainder != NULL )
{
*out_remainder = (utf8stringview_t){ .start = (*this_).start + byte_length, .length = (*this_).length - byte_length };
}
return result;
}
#ifdef __cplusplus
}
#endif
/*
* Copyright 2024-2025 Andreas Warnke
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
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