Function iGetExtension

DevIL/src-IL/src/il_internal.cpp:138–161

ILstring iGetExtension(ILconst_string FileName)
{
	ILboolean PeriodFound = IL_FALSE;
	ILstring Ext = (ILstring)FileName;
	ILint i, Len = ilStrLen(FileName);

	if (FileName == NULL || !Len)  // if not a good filename/extension, exit early
		return NULL;

	Ext += Len;  // start at the end

	for (i = Len; i >= 0; i--) {
		if (*Ext == '.') {  // try to find a period 
			PeriodFound = IL_TRUE;
			break;
		}
		Ext--;
	}

	if (!PeriodFound)  // if no period, no extension
		return NULL;

	return Ext+1;
}


// Checks if the file exists