//=================================================================
//
//        strncpy2.c
//
//        Testcase for C library strncpy()
//
//=================================================================
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//=================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     ctarpy, jlarmour
// Contributors:  
// Date:          2000-04-30
// Description:   Contains testcode for C library strncpy() function
//
//
//####DESCRIPTIONEND####

// INCLUDES

#include <pkgconf/isoinfra.h>
#include <string.h>
#include <cyg/infra/testcase.h>

// CONSTANTS

#define NUM_ROBUSTNESS_RUNS 300

// FUNCTIONS

// Functions to avoid having to use libc strings

static int my_strlen(const char *s)
{
    const char *ptr;

    ptr = s;
    for ( ptr=s ; *ptr != '\0' ; ptr++ )
        ;

    return (int)(ptr-s);
} // my_strlen()


static int my_strcmp(const char *s1, const char *s2)
{
    for ( ; *s1 == *s2 ; s1++,s2++ )
    {
        if ( *s1 == '\0' )
            break;
    } // for

    return (*s1 - *s2);
} // my_strcmp()


static char *my_strcpy(char *s1, const char *s2)
{
    while (*s2 != '\0') {
        *(s1++) = *(s2++);
    }
    *s1 = '\0';

    return s1; 
} // my_strcpy()


#if CYGINT_ISO_MAIN_STARTUP
int main( int argc, char *argv[] )
#else
void cyg_user_start(void)
#endif
{
    char x[300];
    char y[300];
    char *ret;
    int ctr;
    int fail;

    CYG_TEST_INIT();

    CYG_TEST_INFO("Starting tests from testcase " __FILE__ " for C library "
                  "strncpy() function");
    CYG_TEST_INFO("This testcase tests robustness, and may take some time");

    fail = 0;
    for (ctr = 0; ctr < NUM_ROBUSTNESS_RUNS; ctr++) {
        my_strcpy(x, "Green plastic watering can, ");
        my_strcpy(y, "for her fake Chineese rubber plant");
        ret = strncpy(x, y, my_strlen(y)+1);
        if ( (my_strcmp(x, "for her fake Chineese rubber plant") != 0) ||
             ( ret != x ) )
        {
            fail = 1;
            break;
        } // if
    } // for
    CYG_TEST_PASS_FAIL( (fail == 0), "Robustness test" );

//    CYG_TEST_NA("Testing is not applicable to this configuration");

    CYG_TEST_FINISH("Finished tests from testcase " __FILE__ " for C library "
                    "strncpy() function");
} // main()

// EOF strncpy2.c
