Function iStrLen

rEFIt_UEFI/Platform/smbios.cpp:233–252

This function determines ascii string length ending by space. search restricted to MaxLen, for example iStrLen("ABC ", 20) == 3 if MaxLen=0 then as usual strlen but bugless

// iStrLen("ABC    ", 20) == 3
// if MaxLen=0 then as usual strlen but bugless
UINTN iStrLen(CONST CHAR8* String, UINTN MaxLen)
{
  UINTN  Len = 0;
  CONST CHAR8*  BA;
  if(MaxLen > 0) {
    for (Len=0; Len<MaxLen; Len++) {
      if (String[Len] == 0) {
        break;
      }
    }
    BA = &String[Len - 1];
    while ((Len != 0) && ((*BA == ' ') || (*BA == 0))) {
      BA--; Len--;
    }
  } else {
    BA = String;
    while(*BA){BA++; Len++;}
  }
  return Len;
}


// Internal functions for flat SMBIOS