+++ /dev/null
-/* $Id$ */
-
-/* _PDCLIB_strtox_prelim( const char *, char *, 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 <stddef.h>
-#include <string.h>
-#ifndef REGTEST
-const char * _PDCLIB_strtox_prelim( const char * p, char * sign, int * base )
-{
- /* skipping leading whitespace */
- while ( isspace( *p ) ) ++p;
- /* determining / skipping sign */
- if ( *p != '+' && *p != '-' ) *sign = '+';
- else *sign = *(p++);
- /* determining base */
- if ( *p == '0' )
- {
- ++p;
- if ( ( *base == 0 || *base == 16 ) && ( *p == 'x' || *p == 'X' ) )
- {
- *base = 16;
- ++p;
- /* catching a border case here: "0x" followed by a non-digit should
- be parsed as the unprefixed zero.
- We have to "rewind" the parsing; having the base set to 16 if it
- was zero previously does not hurt, as the result is zero anyway.
- */
- if ( memchr( _PDCLIB_digits, tolower(*p), *base ) == NULL )
- {
- p -= 2;
- }
- }
- else if ( *base == 0 )
- {
- *base = 8;
- }
- else
- {
- --p;
- }
- }
- else if ( ! *base )
- {
- *base = 10;
- }
- return ( ( *base >= 2 ) && ( *base <= 36 ) ) ? p : NULL;
-}
-#endif
-
-#ifdef TEST
-#include <_PDCLIB_test.h>
-
-int main( void )
-{
-#ifndef REGTEST
- int base = 0;
- char sign = '\0';
- char test1[] = " 123";
- char test2[] = "\t+0123";
- char test3[] = "\v-0x123";
- TESTCASE( _PDCLIB_strtox_prelim( test1, &sign, &base ) == &test1[2] );
- TESTCASE( sign == '+' );
- TESTCASE( base == 10 );
- base = 0;
- sign = '\0';
- TESTCASE( _PDCLIB_strtox_prelim( test2, &sign, &base ) == &test2[3] );
- TESTCASE( sign == '+' );
- TESTCASE( base == 8 );
- base = 0;
- sign = '\0';
- TESTCASE( _PDCLIB_strtox_prelim( test3, &sign, &base ) == &test3[4] );
- TESTCASE( sign == '-' );
- TESTCASE( base == 16 );
- base = 10;
- sign = '\0';
- TESTCASE( _PDCLIB_strtox_prelim( test3, &sign, &base ) == &test3[2] );
- TESTCASE( sign == '-' );
- TESTCASE( base == 10 );
- base = 1;
- TESTCASE( _PDCLIB_strtox_prelim( test3, &sign, &base ) == NULL );
- base = 37;
- TESTCASE( _PDCLIB_strtox_prelim( test3, &sign, &base ) == NULL );
-#endif
- return TEST_RESULTS;
-}
-
-#endif