bool CFormula::Calculate(CContentTree * start , u64 & Ret)
{
CFormulaNode * ptn = (CFormulaNode *)GetMyNode();
switch(ptn->type)
{
case CFormulaNode::OPERATOR:
{
u64 Value1= 0, Value2 = 0;
CFormula * pFml = (CFormula *)GetChildren();
CFormulaOperatorNode * pFON = (CFormulaOperatorNode *)ptn;
if((!pFml)||(false == pFml->Calculate( start, Value1)))
return false;
pFml = (CFormula *)(pFml->GetRightBrother());
if((!pFml)||(false == pFml->Calculate( start, Value2)))
return false;
/* formula is a two son tree. */
switch(pFON->op)
{
case CFormulaOperatorNode::PLUS:
Ret = Value1 + Value2;
break;
case CFormulaOperatorNode::MINUS:
assert(Value1 >= Value2);
Ret = Value1 - Value2;
break;
case CFormulaOperatorNode::MULTIPLY:
Ret = Value1 * Value2;
break;
case CFormulaOperatorNode::DIVIDE:
Ret = Value1 / Value2;
break;
case CFormulaOperatorNode::EQUAL:
Ret = (Value1 == Value2);
break;
default:
assert(0);
break;
}
}
break;
case CFormulaNode::PARAMETER:
{
CFormulaParameterNode * pFPN = (CFormulaParameterNode *)ptn;
if(false == (start->SearchBackFieldValue(&(pFPN->param) ,Ret)))
return false;
}
break;
case CFormulaNode::NUMERAL:
{
CFormulaNumeralNode * pFNN = (CFormulaNumeralNode *)ptn;
Ret = pFNN->num;
}
break;
}
return true;
}
void CCellView::Read(BPositionIO& stream)
{
CSwapStream str(stream);
scChunk chunk;
long offset;
int *funcList, *styleList, *fontList, *formatList;
int funcCount, styleCount, fontCount, formatCount, borderFont = fBorderFontID;
bool warnForIncorrectFormula = true;
scCell cl;
styleCount = 0;
styleList = (int *)MALLOC(0);
fontCount = 0;
fontList = (int *)MALLOC(0);
formatCount = 0;
formatList = (int *)MALLOC(0);
funcList = NULL;
scCSElement *colStyles = NULL;
int colStyleCount = 0;
offset = 0;
StProgress progress(this, 1, pColorYellow, false);
StWriteLock lock(fContainer);
try
{
stream.Seek(offset, SEEK_SET);
str >> chunk;
if (chunk.type == kscVersion)
{
scVersion vers;
str >> vers;
if (vers.major != 3)
THROW((errTooNewFileFormat));
}
else
THROW((errUnknownFileFormat, ((CCellWindow *)Window())->EntryRef()->name));
do
{
if (stream.Seek(offset, SEEK_SET) < offset)
{
MStopAlert("File is too short").Go();
break;
}
str >> chunk;
offset += 4 + chunk.size;
switch (chunk.type)
{
case kscVersion:
break;
case kscHeader:
{
scHeader head;
str >> head;
funcList = (int *)CALLOC(head.functionCount, sizeof(int));
FailNil(funcList);
funcCount = head.functionCount;
progress.NewMax(head.cellCount);
break;
}
case kscView:
{
scView view;
str >> view;
if (view.windowRect.left > 0 && view.windowRect.top > 0)
{
BRect r;
{
r = BScreen().Frame();
}
r.InsetBy(4, 4);
r = r & view.windowRect;
if (r.IsValid() && r.Width() >= 300 && r.Height() >= 100)
{
Window()->MoveTo(r.left, r.top);
Window()->ResizeTo(r.Width(), r.Height());
}
}
if (view.position.h > 0 && view.position.v > 0)
fPosition = view.position;
fFrozen = view.frozen;
if (view.selection.IsValid())
fSelection = view.selection;
if (fSelection.Contains(view.curCell))
fCurCell = view.curCell;
borderFont = view.headingFont;
fShowGrid = (view.flags & kscShowGrid) != 0;
fShowBorders = (view.flags & kscShowHeadings) != 0;
if (!fShowBorders)
{
fCellBounds.left -= fBorderWidth;
fCellBounds.top -= fBorderHeight;
}
Window()->Show();
Window()->UpdateIfNeeded();
break;
}
case kscPrint:
break;
case kscWidths:
case kscHeights:
{
int count = chunk.size/(sizeof(short)*2);
scWidthElement *elems = (scWidthElement *)MALLOC(chunk.size);
FailNil(elems);
int k = count * sizeof(scWidthElement);
stream.Read(elems, k);
if (chunk.type == kscWidths)
fCellWidths.Read(count, elems);
else
fCellHeights.Read(count, elems);
FREE(elems);
break;
}
case kscColStyles:
{
colStyleCount = chunk.size/(sizeof(short)*2);
colStyles = (scCSElement *)MALLOC(chunk.size);
FailNil(colStyles);
for (int i = 0; i < colStyleCount; i++)
str >> colStyles[i];
break;
}
case kscName:
{
char buf[50];
scName *name = (scName *)buf;
int l = std::min((int)chunk.size, 50);
stream.Read(name, l);
range r;
memcpy(&r, name->reference+1, sizeof(cell));
if (name->reference[0] == valRange)
memcpy(&r.bottom, name->reference+5, sizeof(cell));
else
r.BotRight() = r.TopLeft();
swap_order(r);
if (fNames->count(name->name) == 0)
(*fNames)[CName(name->name)] = r;
break;
}
case kscFunc:
{
scFunc func;
str >> func;
if (!funcList) THROW((errCorruptedFile));
if (func.funcNr >= funcCount)
THROW((errCorruptedFile));
funcList[func.funcNr] = GetFunctionNr(func.name);
if (funcList[func.funcNr] == -1)
WarnForMissingFunction(func.name);
break;
}
case kscFont:
{
scFont font;
str >> font;
font_family fam;
font_style sty;
ReadCString(stream, sizeof(font_style), sty);
ReadCString(stream, sizeof(font_family), fam);
int *t = (int *)REALLOC(fontList, (fontCount+1)*sizeof(int));
FailNil(t);
fontList = t;
fontList[fontCount] = gFontSizeTable.GetFontID(
fam, sty, font.size, font.color);
fontCount++;
break;
}
case kscFormat:
{
scFormat format;
str >> format;
int *t = (int *)REALLOC(formatList, (formatCount+1)*sizeof(int));
FailNil(t);
formatList = t;
if (format.nr < eFirstNewFormat)
formatList[formatCount] = format.nr;
else
{
char fs[256];
ReadCString(stream, 255, fs);
formatList[formatCount] = gFormatTable.GetFormatID(fs);
}
formatCount++;
break;
}
case kscStyle:
{
scStyle style;
str >> style;
int *t = (int *)REALLOC(styleList, (styleCount+1)*sizeof(int));
FailNil(t);
styleList = t;
CellStyle cs;
if (style.font >= fontCount)
THROW((errCorruptedFile));
cs.fFont = fontList[style.font];
if (style.format >= formatCount)
THROW((errCorruptedFile));
cs.fFormat = formatList[style.format];
cs.fAlignment = style.align;
cs.fLowColor = style.lowColor;
cs.fLocked = (style.flags & kscLocked) != 0;
cs.fHidden = (style.flags & kscHidden) != 0;
styleList[styleCount] = gStyleTable.GetStyleID(cs);
styleCount++;
break;
}
case kscCellEmpty:
case kscCellBool:
case kscCellNumber:
case kscCellDateTime:
case kscCellText:
{
str >> cl;
Value val;
switch (chunk.type)
{
case kscCellBool:
{
bool b;
str >> b;
val = b;
break;
}
case kscCellNumber:
{
double d;
str >> d;
val = d;
break;
}
case kscCellDateTime:
{
time_t t;
str >> t;
val = t;
break;
}
case kscCellText:
{
// do nothing yet...
}
}
fContainer->NewCell(cl.loc, val, NULL);
if (cl.style >= styleCount)
/*THROW((errCorruptedFile))*/;
else
fContainer->SetCellStyleNr(cl.loc, styleList[cl.style]);
progress.Step();
break;
}
case kscString:
{
char s[256];
Value val;
stream.Read(s, std::min((int)chunk.size, 255));
s[std::min((int)chunk.size, 255)] = 0;
val = s;
fContainer->SetValue(cl.loc, val);
break;
}
case kscFormula:
{
CFormula form;
try
{
if (!funcList) THROW((errCorruptedFile));
form.Read(stream, funcList);
Value v;
form.Calculate(cl.loc, v, fContainer);
fContainer->SetCellFormula(cl.loc, form.CopyString());
}
catch (CErr& e)
{
CATCHED;
char s[32];
cl.loc.GetName(s);
#if DEBUG
printf("%s in formula of cell %s\n", (char *)e, s);
#endif
if (warnForIncorrectFormula)
{
char m[256];
sprintf(m, GetMessage(msgIncorrectFormula), s);
MAlert *a = new MWarningAlert(m, GetMessage(msgOK),
GetMessage(msgNoMoreWarnings));
if (a->Go() == 2)
warnForIncorrectFormula = false;
}
}
form.Clear();
break;
}
case kscChart:
ReadChart(stream, chunk.size);
case kscEnd:
break;
default:
MStopAlert("File contains errors").Go();
chunk.type = kscEnd;
break;
}
}
while (chunk.type != kscEnd);
// adjust the fields that couldn't be adjusted before
if (fontCount && borderFont < fontCount)
fBorderFontID = fontList[borderFont];
if (colStyles && styleList)
{
for (int i = 0; i < colStyleCount; i++)
{
if (colStyles[i].style >= 0 && colStyles[i].style < styleCount)
colStyles[i].style = styleList[colStyles[i].style];
}
fContainer->GetColumnStyles().Read(colStyleCount, colStyles);
}
}