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wikitable.pas
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wikitable.pas
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(*
wikitable.pas
One unit which handles multiple wiki table formats
Format simplepipes:
|| || title1 || title2 || title3
| [link_to_something|http://google.com]| {color:red}FAILED{color}| {color:red}FAILED{color}| {color:green}PASS{color}
Format mediawiki:
{| border="1" cellpadding="2" class="wikitable sortable"
|-
|
! Title
|-
| [http://google.com link_to_something]
! style="background-color:green;color:white;" | PASS
|}
AUTHORS: Felipe Monteiro de Carvalho
*)
unit wikitable;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils,
fpimage, fgl, lconvencoding,
fpsTypes, fpSpreadsheet, fpsUtils, fpsReaderWriter;
type
TWikiTokenState = (wtsLineStart, wtsCellText, wtsLinkText, wtsLinkTarget, wtsColor);
TWikiTableToken = class
public
BackgroundColor: TsColor;
UseBackgroundColor: Boolean;
Bold: Boolean;
Value: string;
end;
TWikiTableTokenList = specialize TFPGList<TWikiTableToken>;
{ TWikiTableTokenizer }
TWikiTableTokenizer = class
private
FWorkbook: TsWorkbook;
public
Tokens: TWikiTableTokenList;
constructor Create(AWorkbook: TsWorkbook); virtual;
destructor Destroy; override;
procedure Clear;
function AddToken(AValue: string): TWikiTableToken;
procedure TokenizeString_Pipes(AStr: string);
end;
{ TsWikiTableReader }
TsWikiTableReader = class(TsCustomSpreadReader)
protected
procedure ReadFromStrings_Pipes(AStrings: TStrings);
public
SubFormat: TsSpreadsheetFormat;
{ General reading methods }
procedure ReadFromStrings(AStrings: TStrings); override;
end;
{ TsWikiTable_PipesReader }
TsWikiTable_PipesReader = class(TsWikiTableReader)
public
constructor Create(AWorkbook: TsWorkbook); override;
end;
{ TsWikiTableWriter }
TsWikiTableWriter = class(TsCustomSpreadWriter)
public
SubFormat: TsSpreadsheetFormat;
{ General writing methods }
procedure WriteToStrings(AStrings: TStrings); override;
procedure WriteToStrings_WikiMedia(AStrings: TStrings);
end;
{ TsWikiTable_WikiMediaWriter }
TsWikiTable_WikiMediaWriter = class(TsWikiTableWriter)
public
constructor Create(AWorkbook: TsWorkbook); override;
end;
implementation
uses
fpsStrings;
{ TWikiTableTokenizer }
constructor TWikiTableTokenizer.Create(AWorkbook: TsWorkbook);
begin
inherited Create;
FWorkbook := AWorkbook;
Tokens := TWikiTableTokenList.Create;
end;
destructor TWikiTableTokenizer.Destroy;
begin
Clear;
Tokens.Free;
inherited Destroy;
end;
procedure TWikiTableTokenizer.Clear;
var
i: Integer;
begin
for i := 0 to Tokens.Count-1 do
Tokens.Items[i].Free;
Tokens.Clear;
end;
function TWikiTableTokenizer.AddToken(AValue: string): TWikiTableToken;
begin
Result := TWikiTableToken.Create;
Result.Value := AValue;
Tokens.Add(Result);
end;
(*
Format simplepipes:
|| || title1 || title2 || title3
| [link_to_something|http://google.com]| {color:red}FAILED{color}| {color:red}FAILED{color}| {color:green}PASS{color}
*)
procedure TWikiTableTokenizer.TokenizeString_Pipes(AStr: string);
const
Str_Pipe: Char = '|';
Str_LinkStart: Char = '[';
Str_LinkEnd: Char = ']';
Str_FormatStart: Char = '{';
Str_FormatEnd: Char = '}';
Str_EmptySpaces: set of Char = [' '];
var
i: Integer;
lTmpStr: string = '';
lFormatStr: string = '';
lColorStr: String = '';
lState: TWikiTokenState;
lLookAheadChar, lCurChar: Char;
lIsTitle: Boolean = False;
lCurBackgroundColor: TsColor;
lUseBackgroundColor: Boolean = False;
lCurToken: TWikiTableToken;
procedure DoAddToken();
begin
lCurToken := AddToken(lTmpStr);
lCurToken.Bold := lIsTitle;
lCurToken.UseBackgroundColor := lUseBackgroundColor;
if lUseBackgroundColor then
lCurToken.BackgroundColor := lCurBackgroundColor;
end;
begin
Clear;
lState := wtsLineStart;
i := 1;
while i <= Length(AStr) do
begin
lCurChar := AStr[i];
if i < Length(AStr) then lLookAheadChar := AStr[i+1];
case lState of
wtsLineStart: // Line-start or otherwise reading a pipe separator, expecting a | or ||
begin
if lCurChar = Str_Pipe then
begin
lState := wtsCellText;
lIsTitle := False;
if lLookAheadChar = Str_Pipe then
begin
Inc(i);
lIsTitle := True;
end;
Inc(i);
lUseBackgroundColor := False;
lTmpStr := '';
end
else if lCurChar in Str_EmptySpaces then
begin
// Do nothing
Inc(i);
end
else
begin
// Error!!!
raise Exception.Create('[TWikiTableTokenizer.TokenizeString] Wrong char!');
end;
end;
wtsCellText: // Reading cell text
begin
if lCurChar = Str_Pipe then
begin
lState := wtsLineStart;
DoAddToken();
end
else if lCurChar = Str_LinkStart then
begin
lState := wtsLinkText;
Inc(i);
end
else if lCurChar = Str_FormatStart then
begin
lState := wtsColor;
Inc(i);
end
else
begin
lTmpStr := lTmpStr + lCurChar;
Inc(i);
end;
end;
wtsLinkText: // Link text reading
begin
if lCurChar = Str_Pipe then
begin
lState := wtsLinkTarget;
Inc(i);
end
else
begin
lTmpStr := lTmpStr + lCurChar;
Inc(i);
end;
end;
wtsLinkTarget: // Link target reading
begin
if lCurChar = Str_LinkEnd then
begin
lState := wtsCellText;
Inc(i);
end
else
begin
Inc(i);
end;
end;
wtsColor: // Color start reading
begin
if lCurChar = Str_FormatEnd then
begin
lState := wtsCellText;
Inc(i);
lFormatStr := LowerCase(Trim(lFormatStr));
if copy(lFormatstr, 1, 6) = 'color:' then
begin
lColorstr := Copy(lFormatstr, 7, Length(lFormatStr));
lCurBackgroundColor := HTMLColorStrToColor(lColorStr);
// lCurBackgroundColor := FWorkbook.AddColorToPalette(HTMLColorStrToColor(lColorStr));
lUseBackgroundColor := True;
lFormatStr := '';
end;
end
else
begin
lFormatStr := lFormatStr + lCurChar;
Inc(i);
end;
end;
end; // case
end; // while
// rest after the last || is also a token
if lTmpStr <> '' then DoAddToken();
// If there is a token still to be added, add it now
if (lState = wtsLineStart) and (lTmpStr <> '') then AddToken(lTmpStr);
end;
{ TsWikiTableReader }
procedure TsWikiTableReader.ReadFromStrings(AStrings: TStrings);
begin
case SubFormat of
sfWikiTable_Pipes: ReadFromStrings_Pipes(AStrings);
end;
end;
procedure TsWikiTableReader.ReadFromStrings_Pipes(AStrings: TStrings);
var
i, j: Integer;
lCurLine: String;
lLineSplitter: TWikiTableTokenizer;
lCurToken: TWikiTableToken;
begin
FWorksheet := FWorkbook.AddWorksheet('Table', true);
lLineSplitter := TWikiTableTokenizer.Create(FWorkbook);
try
for i := 0 to AStrings.Count-1 do
begin
lCurLine := AStrings[i];
lLineSplitter.TokenizeString_Pipes(lCurLine);
for j := 0 to lLineSplitter.Tokens.Count-1 do
begin
lCurToken := lLineSplitter.Tokens[j];
FWorksheet.WriteUTF8Text(i, j, lCurToken.Value);
if lCurToken.Bold then
FWorksheet.WriteFontStyle(i, j, [fssBold]);
if lCurToken.UseBackgroundColor then
FWorksheet.WriteBackgroundColor(i, j, lCurToken.BackgroundColor);
end;
end;
finally
lLineSplitter.Free;
end;
end;
{ TsWikiTable_PipesReader }
constructor TsWikiTable_PipesReader.Create(AWorkbook: TsWorkbook);
begin
inherited Create(AWorkbook);
SubFormat := sfWikiTable_Pipes;
end;
{ TsWikiTableWriter }
procedure TsWikiTableWriter.WriteToStrings(AStrings: TStrings);
begin
case SubFormat of
sfWikiTable_WikiMedia: WriteToStrings_WikiMedia(AStrings);
end;
end;
(*
Format mediawiki:
{| border="1" cellpadding="2" class="wikitable sortable"
|-
|
! Title
|-
| [http://google.com link_to_something]
! style="background-color:green;color:white;" | PASS
|}
*)
procedure TsWikiTableWriter.WriteToStrings_WikiMedia(AStrings: TStrings);
function DoBorder(ABorder: TsCellBorder; ACell: PCell): String;
const
// (cbNorth, cbWest, cbEast, cbSouth, cbDiagUp, cbDiagDown)
BORDERNAMES: array[TsCellBorder] of string =
('top', 'left', 'right', 'bottom', '', '');
// (lsThin, lsMedium, lsDashed, lsDotted, lsThick, lsDouble, lsHair)
LINESTYLES: array[TsLineStyle] of string =
('1pt solid', 'medium solid', 'dashed', 'dotted', 'thick solid', 'double', 'dotted');
var
ls: TsLineStyle;
clr: TsColor;
fmt: PsCellFormat;
begin
fmt := Workbook.GetPointerToCellFormat(ACell^.FormatIndex);
ls := fmt^.BorderStyles[ABorder].LineStyle;
clr := fmt^.BorderStyles[ABorder].Color;
Result := Format('border-%s:%s', [BORDERNAMES[ABorder], LINESTYLES[ls]]);
if clr <> scBlack then
Result := Result + ' ' + ColorToHTMLColorStr(clr) + '; ';
// Result := Result + ' ' + FWorkbook.GetPaletteColorAsHTMLStr(clr) + '; ';
end;
const
PIPE_CHAR: array[boolean] of String = ('|', '!');
var
i, j: cardinal;
lCurStr: ansistring = '';
lCurUsedFormatting: TsUsedFormattingFields;
lCurColor: TsColor;
lStyleStr: String;
lColSpanStr: String;
lRowSpanStr: String;
lColWidthStr: String;
lRowHeightStr: String;
lCell: PCell;
lCol: PCol;
lRow: PRow;
lFont: TsFont;
horalign: TsHorAlignment;
vertalign: TsVertAlignment;
r1, c1, r2, c2: Cardinal;
isHeader: Boolean;
borders: TsCellBorders;
fs: TFormatSettings;
begin
FWorksheet := Workbook.GetFirstWorksheet();
FWorksheet.UpdateCaches;
fs := FWorksheet.FormatSettings;
fs.DecimalSeparator := '.';
fs.ThousandSeparator := ',';
AStrings.Add('<!-- generated by fpspreadsheet -->');
// Show/hide grid lines
if soShowGridLines in FWorksheet.Options then
lCurStr := '{| class="wikitable"' // sortable"'
else
lCurStr := '{| border="0" cellpadding="2"';
// Default font
lStyleStr := '';
lFont := FWorkbook.GetDefaultFont;
if lFont.FontName <> DEFAULT_FONTNAME then
lStyleStr := lStyleStr + Format('font-family:%s;', [lFont.FontName]);
if fssBold in lFont.Style then
lStyleStr := lStyleStr + 'font-weight:bold;';
if fssItalic in lFont.Style then
lStyleStr := lStyleStr + 'font-style:italic;';
if fssUnderline in lFont.Style then
lStyleStr := lStyleStr + 'text-decoration:underline;';
if lFont.Size <> DEFAULT_FONTSIZE then
lStyleStr := lStyleStr + Format('font-size:%.0fpt;', [lFont.Size]);
if lStyleStr <> '' then
lCurStr := lCurStr + ' style="' + lStyleStr + '"';
AStrings.Add(lCurStr);
for i := 0 to FWorksheet.GetLastRowIndex() do
begin
AStrings.Add('|-');
for j := 0 to FWorksheet.GetLastColIndex do
begin
lCell := FWorksheet.FindCell(i, j);
lCurStr := FWorksheet.ReadAsUTF8Text(lCell, fs);
// if lCurStr = '' then lCurStr := ' ';
// Check for invalid characters
if not ValidXMLText(lCurStr, false) then
Workbook.AddErrorMsg(rsInvalidCharacterInCell, [
GetCellString(i, j)
]);
lStyleStr := '';
lColSpanStr := '';
lRowSpanStr := '';
lColWidthStr := '';
lRowHeightStr := '';
lCurUsedFormatting := FWorksheet.ReadUsedFormatting(lCell);
// Row header
isHeader := (soHasFrozenPanes in FWorksheet.Options) and
((i < cardinal(FWorksheet.TopPaneHeight)) or (j < cardinal(FWorksheet.LeftPaneWidth)));
// Column width (to be considered in first row)
if i = 0 then
begin
lCol := FWorksheet.FindCol(j);
if lCol <> nil then
lColWidthStr := Format(' width="%.0fpt"', [lCol^.Width*FWorkbook.GetDefaultFontSize*0.5]);
end;
// Row height (to be considered in first column)
if j = 0 then
begin
lRow := FWorksheet.FindRow(i);
if lRow <> nil then
lRowHeightStr := Format(' height="%.0fpt"', [lRow^.Height*FWorkbook.GetDefaultFontSize]);
end;
// Font
lFont := FWorkbook.GetDefaultFont;
if (uffFont in lCurUsedFormatting) then
begin
lFont := FWorksheet.ReadCellFont(lCell);
if fssBold in lFont.Style then lCurStr := '<b>' + lCurStr + '</b>';
if fssItalic in lFont.Style then lCurStr := '<i>' + lCurStr + '</i>';
if fssUnderline in lFont.Style then lCurStr := '<u>' + lCurStr + '</u>';
if fssStrikeout in lFont.Style then lCurStr := '<s>' + lCurStr + '</s>';
end;
// Background color
if uffBackground in lCurUsedFormatting then
begin
lCurColor := FWorksheet.ReadBackgroundColor(lCell);
lStyleStr := Format('background-color:%s;color:%s;', [
ColorToHTMLColorStr(lCurColor),
ColorToHTMLColorStr(lFont.Color)
// FWorkbook.GetPaletteColorAsHTMLStr(lCurColor),
// FWorkbook.GetPaletteColorAsHTMLStr(lFont.Color)
]);
end;
// Horizontal alignment
if uffHorAlign in lCurUsedFormatting then
begin
horAlign := FWorksheet.ReadHorAlignment(lCell);
if horAlign = haDefault then
case lCell^.ContentType of
cctNumber,
cctDateTime : horAlign := haRight;
cctBool : horAlign := haCenter;
else horAlign := haLeft;
end;
case horAlign of
haLeft : lStyleStr := lStyleStr + 'text-align:left;';
haCenter : lStyleStr := lStyleStr + 'text-align:center;';
haRight : lStyleStr := lStyleStr + 'text-align:right';
end;
end;
// vertical alignment
if uffVertAlign in lCurUsedFormatting then
begin
vertAlign := FWorksheet.ReadVertAlignment(lCell);
case vertAlign of
vaTop : lStyleStr := lStyleStr + 'vertical-align:top;';
vaCenter : lStyleStr := lStyleStr + 'vertical-align:center;';
vaBottom : lStyleStr := lStyleStr + 'vertical-align:bottom;';
end;
end;
// borders
if uffBorder in lCurUsedFormatting then
begin
borders := FWorksheet.ReadCellBorders(lCell);
if (cbWest in borders) then
lStyleStr := lStyleStr + DoBorder(cbWest, lCell);
if (cbEast in borders) then
lStyleStr := lStyleStr + DoBorder(cbEast, lCell);
if (cbNorth in borders) then
lStyleStr := lStyleStr + DoBorder(cbNorth, lCell);
if (cbSouth in borders) then
lStyleStr := lStyleStr + DoBorder(cbSouth, lCell);
end;
// Merged cells
if FWorksheet.IsMerged(lCell) then
begin
FWorksheet.FindMergedRange(lCell, r1, c1, r2, c2);
if (i = r1) and (j = c1) then
begin
if r1 < r2 then
lRowSpanStr := Format(' rowspan="%d"', [r2-r1+1]);
if c1 < c2 then
lColSpanStr := Format(' colspan="%d"', [c2-c1+1]);
end
else
if (i >= r1) and (i <= r2) and (j >= c1) and (j <= c2) then
Continue;
end;
// Put everything together...
if lStyleStr <> '' then
lStyleStr := Format(' style="%s"', [lStyleStr]);
if lRowSpanStr <> '' then
lStyleStr := lRowSpanStr + lStyleStr;
if lColSpanStr <> '' then
lStyleStr := lColSpanStr + lStyleStr;
if lColWidthStr <> '' then
lStyleStr := lColWidthStr + lStyleStr;
if lRowHeightStr <> '' then
lStyleStr := lRowHeightStr + lStyleStr;
if lCurStr <> '' then
lCurStr := ' ' + lCurStr;
if lStyleStr <> '' then
lCurStr := lStyleStr + ' |' + lCurStr;
lCurStr := PIPE_CHAR[isHeader] + lCurStr;
// Add to list
AStrings.Add(lCurStr);
end;
end;
AStrings.Add('|}');
end;
{ TsWikiTable_WikiMediaWriter }
constructor TsWikiTable_WikiMediaWriter.Create(AWorkbook: TsWorkbook);
begin
inherited Create(AWorkbook);
SubFormat := sfWikiTable_WikiMedia;
end;
initialization
RegisterSpreadFormat(TsWikiTable_PipesReader, nil, sfWikiTable_Pipes);
RegisterSpreadFormat(nil, TsWikiTable_WikiMediaWriter, sfWikiTable_WikiMedia);
end.