86 lines
2.5 KiB
C
86 lines
2.5 KiB
C
/* _PDCLIB_strtox_main( const char * *, int, _PDCLIB_uintmax_t, _PDCLIB_uintmax_t, int )
|
|
|
|
This file is part of the Public Domain C Library (PDCLib).
|
|
Permission is granted to use, modify, and / or redistribute at will.
|
|
*/
|
|
|
|
#include <ctype.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <stdint.h>
|
|
|
|
#ifndef REGTEST
|
|
#include "_PDCLIB_int.h"
|
|
_PDCLIB_uintmax_t _PDCLIB_strtox_main( const char ** p, unsigned int base, uintmax_t error, uintmax_t limval, int limdigit, char * sign )
|
|
{
|
|
_PDCLIB_uintmax_t rc = 0;
|
|
int digit = -1;
|
|
const char * x;
|
|
while ( ( x = memchr( _PDCLIB_digits, tolower(**p), base ) ) != NULL )
|
|
{
|
|
digit = x - _PDCLIB_digits;
|
|
if ( ( rc < limval ) || ( ( rc == limval ) && ( digit <= limdigit ) ) )
|
|
{
|
|
rc = rc * base + (unsigned)digit;
|
|
++(*p);
|
|
}
|
|
else
|
|
{
|
|
errno = ERANGE;
|
|
/* TODO: Only if endptr != NULL - but do we really want *another* parameter? */
|
|
/* TODO: Earlier version was missing tolower() here but was not caught by tests */
|
|
while ( memchr( _PDCLIB_digits, tolower(**p), base ) != NULL ) ++(*p);
|
|
/* TODO: This is ugly, but keeps caller from negating the error value */
|
|
*sign = '+';
|
|
return error;
|
|
}
|
|
}
|
|
if ( digit == -1 )
|
|
{
|
|
*p = NULL;
|
|
return 0;
|
|
}
|
|
return rc;
|
|
}
|
|
#endif
|
|
|
|
#ifdef TEST
|
|
#include "_PDCLIB_test.h"
|
|
#include <errno.h>
|
|
|
|
int main( void )
|
|
{
|
|
#ifndef REGTEST
|
|
const char * p;
|
|
char test[] = "123_";
|
|
char fail[] = "xxx";
|
|
char sign = '-';
|
|
/* basic functionality */
|
|
p = test;
|
|
errno = 0;
|
|
TESTCASE( _PDCLIB_strtox_main( &p, 10u, (uintmax_t)999, (uintmax_t)12, 3, &sign ) == 123 );
|
|
TESTCASE( errno == 0 );
|
|
TESTCASE( p == &test[3] );
|
|
/* proper functioning to smaller base */
|
|
p = test;
|
|
TESTCASE( _PDCLIB_strtox_main( &p, 8u, (uintmax_t)999, (uintmax_t)12, 3, &sign ) == 0123 );
|
|
TESTCASE( errno == 0 );
|
|
TESTCASE( p == &test[3] );
|
|
/* overflowing subject sequence must still return proper endptr */
|
|
p = test;
|
|
TESTCASE( _PDCLIB_strtox_main( &p, 4u, (uintmax_t)999, (uintmax_t)1, 2, &sign ) == 999 );
|
|
TESTCASE( errno == ERANGE );
|
|
TESTCASE( p == &test[3] );
|
|
TESTCASE( sign == '+' );
|
|
/* testing conversion failure */
|
|
errno = 0;
|
|
p = fail;
|
|
sign = '-';
|
|
TESTCASE( _PDCLIB_strtox_main( &p, 10u, (uintmax_t)999, (uintmax_t)99, 8, &sign ) == 0 );
|
|
TESTCASE( p == NULL );
|
|
#endif
|
|
return TEST_RESULTS;
|
|
}
|
|
|
|
#endif
|