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ExcelWriter.js
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ExcelWriter.js
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import FileSaver from "file-saver";
import JSZip from "jszip";
// [Content_Types].xml
const contenttypesString =
'<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Types xmlns="http://schemas.openxmlformats.org/package/2006/content-types"><Default Extension="rels" ContentType="application/vnd.openxmlformats-package.relationships+xml"/><Default Extension="xml" ContentType="application/xml"/><Override PartName="/xl/workbook.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sheet.main+xml"/><Override PartName="/xl/worksheets/sheet1.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.worksheet+xml"/><Override PartName="/xl/theme/theme1.xml" ContentType="application/vnd.openxmlformats-officedocument.theme+xml"/><Override PartName="/xl/styles.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.styles+xml"/><Override PartName="/xl/sharedStrings.xml" ContentType="application/vnd.openxmlformats-officedocument.spreadsheetml.sharedStrings+xml"/><Override PartName="/docProps/core.xml" ContentType="application/vnd.openxmlformats-package.core-properties+xml"/><Override PartName="/docProps/app.xml" ContentType="application/vnd.openxmlformats-officedocument.extended-properties+xml"/></Types>';
// /_rels/.rels
const relsString =
'<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId3" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/extended-properties" Target="docProps/app.xml"/><Relationship Id="rId2" Type="http://schemas.openxmlformats.org/package/2006/relationships/metadata/core-properties" Target="docProps/core.xml"/><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/officeDocument" Target="xl/workbook.xml"/></Relationships>';
// /docProps/app.xml
const docpropsappString =
'<?xml version="1.0" encoding="UTF-8" standalone="yes"?> <Properties xmlns="http://schemas.openxmlformats.org/officeDocument/2006/extended-properties" xmlns:vt="http://schemas.openxmlformats.org/officeDocument/2006/docPropsVTypes"><TotalTime>0</TotalTime><Application>Microsoft Excel</Application><DocSecurity>0</DocSecurity><ScaleCrop>false</ScaleCrop><HeadingPairs><vt:vector size="2" baseType="variant"><vt:variant><vt:lpstr>Arbeitsblätter</vt:lpstr></vt:variant><vt:variant><vt:i4>1</vt:i4></vt:variant></vt:vector></HeadingPairs><TitlesOfParts><vt:vector size="1" baseType="lpstr"><vt:lpstr>Tabelle1</vt:lpstr></vt:vector></TitlesOfParts><Company></Company><LinksUpToDate>false</LinksUpToDate><SharedDoc>false</SharedDoc><HyperlinksChanged>false</HyperlinksChanged><AppVersion>16.0300</AppVersion></Properties>';
// /docProps/core.xml
const docpropscoreString =
'<?xml version="1.0" encoding="UTF-8" standalone="yes"?><cp:coreProperties xmlns:cp="http://schemas.openxmlformats.org/package/2006/metadata/core-properties" xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:dcterms="http://purl.org/dc/terms/" xmlns:dcmitype="http://purl.org/dc/dcmitype/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"><dc:creator></dc:creator><cp:lastModifiedBy></cp:lastModifiedBy><dcterms:created xsi:type="dcterms:W3CDTF">2015-06-05T18:19:34Z</dcterms:created><dcterms:modified xsi:type="dcterms:W3CDTF">2018-04-28T16:09:05Z</dcterms:modified></cp:coreProperties>';
// /xl/styles.xml
const stylesString =
'<?xml version="1.0" encoding="UTF-8" standalone="yes"?><styleSheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x14ac x16r2 xr" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac" xmlns:x16r2="http://schemas.microsoft.com/office/spreadsheetml/2015/02/main" xmlns:xr="http://schemas.microsoft.com/office/spreadsheetml/2014/revision"><fonts count="1" x14ac:knownFonts="1"><font><sz val="11"/><color theme="1"/><name val="Calibri"/><family val="2"/><scheme val="minor"/></font></fonts><fills count="2"><fill><patternFill patternType="none"/></fill><fill><patternFill patternType="gray125"/></fill></fills><borders count="1"><border><left/><right/><top/><bottom/><diagonal/></border></borders><cellStyleXfs count="1"><xf numFmtId="0" fontId="0" fillId="0" borderId="0"/></cellStyleXfs><cellXfs count="1"><xf numFmtId="0" fontId="0" fillId="0" borderId="0" xfId="0"/></cellXfs><cellStyles count="1"><cellStyle name="Standard" xfId="0" builtinId="0"/></cellStyles><dxfs count="0"/><tableStyles count="0" defaultTableStyle="TableStyleMedium2" defaultPivotStyle="PivotStyleLight16"/><extLst><ext uri="{EB79DEF2-80B8-43e5-95BD-54CBDDF9020C}" xmlns:x14="http://schemas.microsoft.com/office/spreadsheetml/2009/9/main"><x14:slicerStyles defaultSlicerStyle="SlicerStyleLight1"/></ext><ext uri="{9260A510-F301-46a8-8635-F512D64BE5F5}" xmlns:x15="http://schemas.microsoft.com/office/spreadsheetml/2010/11/main"><x15:timelineStyles defaultTimelineStyle="TimeSlicerStyleLight1"/></ext></extLst></styleSheet>';
// /xl/workbooks.xml
const workbooksString =
'<?xml version="1.0" encoding="UTF-8" standalone="yes"?><workbook xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x15 xr xr6 xr10 xr2" xmlns:x15="http://schemas.microsoft.com/office/spreadsheetml/2010/11/main" xmlns:xr="http://schemas.microsoft.com/office/spreadsheetml/2014/revision" xmlns:xr6="http://schemas.microsoft.com/office/spreadsheetml/2016/revision6" xmlns:xr10="http://schemas.microsoft.com/office/spreadsheetml/2016/revision10" xmlns:xr2="http://schemas.microsoft.com/office/spreadsheetml/2015/revision2"><fileVersion appName="xl" lastEdited="7" lowestEdited="6" rupBuild="19126"/><workbookPr filterPrivacy="1"/><xr:revisionPtr revIDLastSave="0" documentId="12_ncr:500000_{3B63BBC1-22C2-4DD2-9ED3-06F5C4328210}" xr6:coauthVersionLast="31" xr6:coauthVersionMax="31" xr10:uidLastSave="{00000000-0000-0000-0000-000000000000}"/><bookViews><workbookView xWindow="0" yWindow="0" windowWidth="22260" windowHeight="12647" xr2:uid="{00000000-000D-0000-FFFF-FFFF00000000}"/></bookViews><sheets><sheet name="Tabelle1" sheetId="1" r:id="rId1"/></sheets><calcPr calcId="162913"/><extLst><ext uri="{140A7094-0E35-4892-8432-C4D2E57EDEB5}" xmlns:x15="http://schemas.microsoft.com/office/spreadsheetml/2010/11/main"><x15:workbookPr chartTrackingRefBase="1"/></ext></extLst></workbook>';
// /xl/_rels/workbook.xml.rels
const workbookxmlrelsString =
'<?xml version="1.0" encoding="UTF-8" standalone="yes"?><Relationships xmlns="http://schemas.openxmlformats.org/package/2006/relationships"><Relationship Id="rId3" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/styles" Target="styles.xml"/><Relationship Id="rId2" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/theme" Target="theme/theme1.xml"/><Relationship Id="rId1" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/worksheet" Target="worksheets/sheet1.xml"/><Relationship Id="rId4" Type="http://schemas.openxmlformats.org/officeDocument/2006/relationships/sharedStrings" Target="sharedStrings.xml"/></Relationships>';
// /xl/theme/theme1.xml
const themeString =
'<?xml version="1.0" encoding="UTF-8" standalone="yes"?><a:theme xmlns:a="http://schemas.openxmlformats.org/drawingml/2006/main" name="Office Theme"><a:themeElements><a:clrScheme name="Office"><a:dk1><a:sysClr val="windowText" lastClr="000000"/></a:dk1><a:lt1><a:sysClr val="window" lastClr="FFFFFF"/></a:lt1><a:dk2><a:srgbClr val="44546A"/></a:dk2><a:lt2><a:srgbClr val="E7E6E6"/></a:lt2><a:accent1><a:srgbClr val="5B9BD5"/></a:accent1><a:accent2><a:srgbClr val="ED7D31"/></a:accent2><a:accent3><a:srgbClr val="A5A5A5"/></a:accent3><a:accent4><a:srgbClr val="FFC000"/></a:accent4><a:accent5><a:srgbClr val="4472C4"/></a:accent5><a:accent6><a:srgbClr val="70AD47"/></a:accent6><a:hlink><a:srgbClr val="0563C1"/></a:hlink><a:folHlink><a:srgbClr val="954F72"/></a:folHlink></a:clrScheme><a:fontScheme name="Office"><a:majorFont><a:latin typeface="Calibri Light" panose="020F0302020204030204"/><a:ea typeface=""/><a:cs typeface=""/><a:font script="Jpan" typeface="Yu Gothic Light"/><a:font script="Hang" typeface="맑은 고딕"/><a:font script="Hans" typeface="等线 Light"/><a:font script="Hant" typeface="新細明體"/><a:font script="Arab" typeface="Times New Roman"/><a:font script="Hebr" typeface="Times New Roman"/><a:font script="Thai" typeface="Tahoma"/><a:font script="Ethi" typeface="Nyala"/><a:font script="Beng" typeface="Vrinda"/><a:font script="Gujr" typeface="Shruti"/><a:font script="Khmr" typeface="MoolBoran"/><a:font script="Knda" typeface="Tunga"/><a:font script="Guru" typeface="Raavi"/><a:font script="Cans" typeface="Euphemia"/><a:font script="Cher" typeface="Plantagenet Cherokee"/><a:font script="Yiii" typeface="Microsoft Yi Baiti"/><a:font script="Tibt" typeface="Microsoft Himalaya"/><a:font script="Thaa" typeface="MV Boli"/><a:font script="Deva" typeface="Mangal"/><a:font script="Telu" typeface="Gautami"/><a:font script="Taml" typeface="Latha"/><a:font script="Syrc" typeface="Estrangelo Edessa"/><a:font script="Orya" typeface="Kalinga"/><a:font script="Mlym" typeface="Kartika"/><a:font script="Laoo" typeface="DokChampa"/><a:font script="Sinh" typeface="Iskoola Pota"/><a:font script="Mong" typeface="Mongolian Baiti"/><a:font script="Viet" typeface="Times New Roman"/><a:font script="Uigh" typeface="Microsoft Uighur"/><a:font script="Geor" typeface="Sylfaen"/></a:majorFont><a:minorFont><a:latin typeface="Calibri" panose="020F0502020204030204"/><a:ea typeface=""/><a:cs typeface=""/><a:font script="Jpan" typeface="Yu Gothic"/><a:font script="Hang" typeface="맑은 고딕"/><a:font script="Hans" typeface="等线"/><a:font script="Hant" typeface="新細明體"/><a:font script="Arab" typeface="Arial"/><a:font script="Hebr" typeface="Arial"/><a:font script="Thai" typeface="Tahoma"/><a:font script="Ethi" typeface="Nyala"/><a:font script="Beng" typeface="Vrinda"/><a:font script="Gujr" typeface="Shruti"/><a:font script="Khmr" typeface="DaunPenh"/><a:font script="Knda" typeface="Tunga"/><a:font script="Guru" typeface="Raavi"/><a:font script="Cans" typeface="Euphemia"/><a:font script="Cher" typeface="Plantagenet Cherokee"/><a:font script="Yiii" typeface="Microsoft Yi Baiti"/><a:font script="Tibt" typeface="Microsoft Himalaya"/><a:font script="Thaa" typeface="MV Boli"/><a:font script="Deva" typeface="Mangal"/><a:font script="Telu" typeface="Gautami"/><a:font script="Taml" typeface="Latha"/><a:font script="Syrc" typeface="Estrangelo Edessa"/><a:font script="Orya" typeface="Kalinga"/><a:font script="Mlym" typeface="Kartika"/><a:font script="Laoo" typeface="DokChampa"/><a:font script="Sinh" typeface="Iskoola Pota"/><a:font script="Mong" typeface="Mongolian Baiti"/><a:font script="Viet" typeface="Arial"/><a:font script="Uigh" typeface="Microsoft Uighur"/><a:font script="Geor" typeface="Sylfaen"/></a:minorFont></a:fontScheme><a:fmtScheme name="Office"><a:fillStyleLst><a:solidFill><a:schemeClr val="phClr"/></a:solidFill><a:gradFill rotWithShape="1"><a:gsLst><a:gs pos="0"><a:schemeClr val="phClr"><a:lumMod val="110000"/><a:satMod val="105000"/><a:tint val="67000"/></a:schemeClr></a:gs><a:gs pos="50000"><a:schemeClr val="phClr"><a:lumMod val="105000"/><a:satMod val="103000"/><a:tint val="73000"/></a:schemeClr></a:gs><a:gs pos="100000"><a:schemeClr val="phClr"><a:lumMod val="105000"/><a:satMod val="109000"/><a:tint val="81000"/></a:schemeClr></a:gs></a:gsLst><a:lin ang="5400000" scaled="0"/></a:gradFill><a:gradFill rotWithShape="1"><a:gsLst><a:gs pos="0"><a:schemeClr val="phClr"><a:satMod val="103000"/><a:lumMod val="102000"/><a:tint val="94000"/></a:schemeClr></a:gs><a:gs pos="50000"><a:schemeClr val="phClr"><a:satMod val="110000"/><a:lumMod val="100000"/><a:shade val="100000"/></a:schemeClr></a:gs><a:gs pos="100000"><a:schemeClr val="phClr"><a:lumMod val="99000"/><a:satMod val="120000"/><a:shade val="78000"/></a:schemeClr></a:gs></a:gsLst><a:lin ang="5400000" scaled="0"/></a:gradFill></a:fillStyleLst><a:lnStyleLst><a:ln w="6350" cap="flat" cmpd="sng" algn="ctr"><a:solidFill><a:schemeClr val="phClr"/></a:solidFill><a:prstDash val="solid"/><a:miter lim="800000"/></a:ln><a:ln w="12700" cap="flat" cmpd="sng" algn="ctr"><a:solidFill><a:schemeClr val="phClr"/></a:solidFill><a:prstDash val="solid"/><a:miter lim="800000"/></a:ln><a:ln w="19050" cap="flat" cmpd="sng" algn="ctr"><a:solidFill><a:schemeClr val="phClr"/></a:solidFill><a:prstDash val="solid"/><a:miter lim="800000"/></a:ln></a:lnStyleLst><a:effectStyleLst><a:effectStyle><a:effectLst/></a:effectStyle><a:effectStyle><a:effectLst/></a:effectStyle><a:effectStyle><a:effectLst><a:outerShdw blurRad="57150" dist="19050" dir="5400000" algn="ctr" rotWithShape="0"><a:srgbClr val="000000"><a:alpha val="63000"/></a:srgbClr></a:outerShdw></a:effectLst></a:effectStyle></a:effectStyleLst><a:bgFillStyleLst><a:solidFill><a:schemeClr val="phClr"/></a:solidFill><a:solidFill><a:schemeClr val="phClr"><a:tint val="95000"/><a:satMod val="170000"/></a:schemeClr></a:solidFill><a:gradFill rotWithShape="1"><a:gsLst><a:gs pos="0"><a:schemeClr val="phClr"><a:tint val="93000"/><a:satMod val="150000"/><a:shade val="98000"/><a:lumMod val="102000"/></a:schemeClr></a:gs><a:gs pos="50000"><a:schemeClr val="phClr"><a:tint val="98000"/><a:satMod val="130000"/><a:shade val="90000"/><a:lumMod val="103000"/></a:schemeClr></a:gs><a:gs pos="100000"><a:schemeClr val="phClr"><a:shade val="63000"/><a:satMod val="120000"/></a:schemeClr></a:gs></a:gsLst><a:lin ang="5400000" scaled="0"/></a:gradFill></a:bgFillStyleLst></a:fmtScheme></a:themeElements><a:objectDefaults/><a:extraClrSchemeLst/><a:extLst><a:ext uri="{05A4C25C-085E-4340-85A3-A5531E510DB2}"><thm15:themeFamily xmlns:thm15="http://schemas.microsoft.com/office/thememl/2012/main" name="Office Theme" id="{62F939B6-93AF-4DB8-9C6B-D6C7DFDC589F}" vid="{4A3C46E8-61CC-4603-A589-7422A47A8E4A}"/></a:ext></a:extLst></a:theme>';
class ExcelWriter {
constructor() {
this.maxRows = 0;
this.maxCols = 0;
this.numUniqueStrings = 0;
this.numStrings = 0;
this.uniqueStrings = {};
this.rowsData = []; // the structure shall be etc [[{Data: row1Col1Data, Type: "string"},{Data: row1Col2Data, Type: "number"},....],[{Data: null, Type: "None"},....]]: null indicates that cell is empty
this.colnumbertocolletter = this.colnumbertocolletter.bind(this);
this.save = this.save.bind(this);
this.addRow = this.addRow.bind(this);
this.createSharedStringsXML = this.createSharedStringsXML.bind(this);
this.createSheetXML = this.createSheetXML.bind(this);
}
//This function may be used in two ways
//1. the passed array contains objects with {Type: "numberOrString", Data: "Data"}
//1. The passed array is an array of strings/numbers. When type=string all elements are treaded as strings, when type=auto all types are automatically inferred
addRow(rowArray = [], type = "string") {
this.maxRows++;
if (this.maxCols < rowArray.length) this.maxCols = rowArray.length;
let parsedArray = rowArray.map(col => {
//Correct if col.Type is erroneously declared as number
if (typeof col === "object") {
if (col.Type === "number" && typeof col.Data !== "number")
col.Type = "string";
if (col.Type === "string") this.numStrings++;
if (
col.Data !== null &&
!(col.Data in this.uniqueStrings) &&
col.Type === "string"
) {
this.numUniqueStrings++;
this.uniqueStrings[col.Data] = this.numUniqueStrings - 1;
}
return col;
} else {
if (type === "string" || typeof col === "string") {
this.numStrings++;
if (!(col in this.uniqueStrings)) {
this.numUniqueStrings++;
this.uniqueStrings[String(col)] = this.numUniqueStrings - 1;
}
return { Data: col, Type: "string" };
} else return { Data: col, Type: "number" };
}
});
this.rowsData.push(parsedArray);
}
//returns string for /xl/worksheets/sheet1.xml
createSheetXML() {
let sheetXML = `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><worksheet xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" xmlns:r="http://schemas.openxmlformats.org/officeDocument/2006/relationships" xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006" mc:Ignorable="x14ac xr xr2 xr3" xmlns:x14ac="http://schemas.microsoft.com/office/spreadsheetml/2009/9/ac" xmlns:xr="http://schemas.microsoft.com/office/spreadsheetml/2014/revision" xmlns:xr2="http://schemas.microsoft.com/office/spreadsheetml/2015/revision2" xmlns:xr3="http://schemas.microsoft.com/office/spreadsheetml/2016/revision3" xr:uid="{00000000-0001-0000-0000-000000000000}"><dimension ref="A1:${this.colnumbertocolletter(
this.maxCols
)}${
this.maxRows
}"/><sheetViews><sheetView tabSelected="1" workbookViewId="0"><selection activeCell="A1" sqref="A1"/></sheetView></sheetViews><sheetFormatPr baseColWidth="10" defaultColWidth="8.9375" defaultRowHeight="14.35" x14ac:dyDescent="0.5"/><sheetData>`;
let rownum = 0;
let colnum = 0;
this.rowsData.forEach(row => {
rownum++;
colnum = 0;
sheetXML += `<row r="${rownum}" spans="1:${
this.maxCols
}" x14ac:dyDescent="0.5">`;
row.forEach(col => {
colnum++;
if (col.Type === "number" && col.Data !== null)
sheetXML += `<c r="${this.colnumbertocolletter(
colnum
)}${rownum}"><v>${col.Data}</v></c>`;
else {
sheetXML += `<c r="${this.colnumbertocolletter(
colnum
)}${rownum}" t="s"><v>${this.uniqueStrings[col.Data]}</v></c>`;
}
});
sheetXML += `</row>`;
});
sheetXML += `</sheetData><pageMargins left="0.7" right="0.7" top="0.75" bottom="0.75" header="0.3" footer="0.3"/></worksheet>`;
return sheetXML;
}
//returns string /xl/worksheets/sheet1.xml
createSharedStringsXML() {
let sharedString = `<?xml version="1.0" encoding="UTF-8" standalone="yes"?><sst xmlns="http://schemas.openxmlformats.org/spreadsheetml/2006/main" count="${
this.numStrings
}" uniqueCount="${this.numUniqueStrings}">`;
let positions = {};
Object.keys(this.uniqueStrings).forEach(uniqueString => {
let pos = this.uniqueStrings[uniqueString];
positions[pos] = uniqueString;
});
for (let i = 0; i < Object.keys(positions).length; i++) {
let valString = positions[i];
valString = valString
.replace(/&/g, "&")
.replace(/"/g, """)
.replace(/'/g, "'")
.replace(/</g, "<")
.replace(/>/g, ">"); //escaped characters in xml, using regular expressions to replace all occurences.
sharedString += `<si><t>${valString}</t></si>`;
}
sharedString += "</sst>";
return sharedString;
}
colnumbertocolletter(number) {
let alphabet = [
"A",
"B",
"C",
"D",
"E",
"F",
"G",
"H",
"I",
"J",
"K",
"L",
"M",
"N",
"O",
"P",
"Q",
"R",
"S",
"T",
"U",
"V",
"W",
"X",
"Y",
"Z"
];
if (number <= alphabet.length) return alphabet[number - 1];
else {
let alength = alphabet.length;
let firstletter = alphabet[Math.floor(number / alength) - 1];
let secondletter = alphabet[number % alength - 1];
return firstletter + secondletter;
}
}
save(filename) {
let zip = new JSZip();
zip.file("[Content_Types].xml", contenttypesString);
zip.file("_rels/.rels", relsString);
zip.file("docProps/app.xml", docpropsappString);
zip.file("docProps/core.xml", docpropscoreString);
zip.file("xl/_rels/workbook.xml.rels", workbookxmlrelsString);
zip.file("xl/theme/theme1.xml", themeString);
zip.file("xl/styles.xml", stylesString);
zip.file("xl/workbook.xml", workbooksString);
//This is were the magic happens and the actual information is stored
zip.file("xl/worksheets/sheet1.xml", this.createSheetXML());
zip.file("xl/sharedStrings.xml", this.createSharedStringsXML());
//Generate excel file
zip.generateAsync({ type: "blob" }).then(function(content) {
FileSaver.saveAs(content, filename);
});
}
}
export default ExcelWriter;