Function iCheckExtension

DevIL/src-IL/src/il_internal.cpp:108–135

Simple function to test if a filename has a given extension, disregarding case

// Simple function to test if a filename has a given extension, disregarding case
ILboolean iCheckExtension(ILconst_string Arg, ILconst_string Ext)
{
	ILboolean PeriodFound = IL_FALSE;
	ILint i, Len;
	ILstring Argu = (ILstring)Arg;

	if (Arg == NULL || Ext == NULL || !ilStrLen(Arg) || !ilStrLen(Ext))  // if not a good filename/extension, exit early
		return IL_FALSE;

	Len = ilStrLen(Arg);
	Argu += Len;  // start at the end

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

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

	if (!iStrCmp(Argu+1, Ext))  // extension and ext match?
		return IL_TRUE;

	return IL_FALSE;  // if all else fails, return IL_FALSE
}


ILstring iGetExtension(ILconst_string FileName)