DeleteAt.c

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#include                <string.h>
#include                "libFireBird.h"
 
void DeleteAt(char *SourceString, int Pos, int Len)
{
  TRACEENTER();
 
  char                 *dst, *src;
  int                   l;
 
  if((SourceString == NULL) || (!*SourceString) || (Len == 0))
  {
    TRACEEXIT();
    return;
  }
 
  if(Pos < 0) Pos = 0;
  l = strlenUC(SourceString);
 
  if((Pos >= l))
  {
    TRACEEXIT();
    return;
  }
 
  dst = GetUCPos(SourceString, Pos) - 1;
  src = GetUCPos(dst + 1, Len) - 1;
  if(Pos + Len > l) src++;
 
  do
  {
    dst++;
    src++;
    *dst = *src;
  }while(*dst);
 
  TRACEEXIT();
}