_StrCmp( ) API Library Routine Example
The following example uses _StrCmp( ) to compare two strings passed as parameters.
SET LIBRARY TO STRCMP
? STRCMP("Hello, world.", "Hello, world.") && matches; returns 0
? STRCMP("Hello, world.", "Hello, wurld.") && no match; returns non-0
#include <pro_ext.h>
void NullTerminate(Value FAR *cVal)
{
if (!_SetHandSize(cVal->ev_handle, cVal->ev_length + 1))
{
_Error(182); // "Insufficient memory"
}
((char FAR *) _HandToPtr(cVal->ev_handle))[cVal->ev_length] = '\0';
}
FAR Example(ParamBlk FAR *parm)
{
int RetValue;
NullTerminate(&parm->p[0].val);
NullTerminate(&parm->p[1].val);
_HLock(parm->p[0].val.ev_handle);
_HLock(parm->p[1].val.ev_handle);
RetValue = _StrCmp(_HandToPtr(parm->p[0].val.ev_handle),
_HandToPtr(parm->p[1].val.ev_handle));
_RetInt(RetValue, 10); // does return control here
_HUnLock(parm->p[0].val.ev_handle);
_HUnLock(parm->p[1].val.ev_handle);
}
FoxInfo myFoxInfo[] = {
{"STRCMP", (FPFI) Example, 2, "C,C"},
};
FoxTable _FoxTable = {
(FoxTable FAR *) 0, sizeof(myFoxInfo)/sizeof(FoxInfo), myFoxInfo
};