xlsx-style

Parser and writer for various spreadsheet formats. Pure-JS cleanroom implementation from official specifications and related documents.

#About this fork

This fork just correct an error on dist/cpexcel.js which crash the compilation

About the fork of xlsx-style to xlsx

NOTE: This project is a fork of the original (and awesome) SheetJS/xlsx project.
It is extended to enable cell formats to be read from and written to .xlsx workbooks.
The intent is to provide a temporary means of using these features in practice, and ultimately to merge this into the primary project.
Report any issues to https://github.com/protobi/js-xlsx/issues.

For those contributing to this fork:
* master is the main branch, which follows the original repo to enable a future pull request.
* beta branch is published to npm and bower to make this fork available for use.

Supported formats

Supported read formats:

- Excel 2007+ XML Formats (XLSX/XLSM)
- Excel 2007+ Binary Format (XLSB)
- Excel 2003-2004 XML Format (XML "SpreadsheetML")
- Excel 97-2004 (XLS BIFF8)
- Excel 5.0/95 (XLS BIFF5)
- OpenDocument Spreadsheet (ODS)

Supported write formats:

- XLSX
- CSV (and general DSV)
- JSON and JS objects (various styles)

Demo:

Source:

Installation

With npm:

``

sh

npm install xlsx-style --save





In the browser:

html





With bower:

sh

bower install js-xlsx-style#beta





CDNjs automatically pulls the latest version and makes all versions available at





Optional Modules



The node version automatically requires modules for additional features.  Some

of these modules are rather large in size and are only needed in special

circumstances, so they do not ship with the core.  For browser use, they must

be included directly:

html





An appropriate version for each dependency is included in the dist/ directory.



The complete single-file version is generated at

dist/xlsx.full.min.js





ECMAScript 5 Compatibility



Since xlsx.js uses ES5 functions like

Array#forEach

, older browsers require

Polyfills.  This repo and the gh-pages branch include

a shim



To use the shim, add the shim before the script tag that loads xlsx.js:

html





Parsing Workbooks



For parsing, the first step is to read the file.  This involves acquiring the

data and feeding it into the library.  Here are a few common scenarios:



- node readFile:

js

if(typeof require !== 'undefined') XLSX = require('xlsx');

var workbook = XLSX.readFile('test.xlsx');

/ DO SOMETHING WITH workbook HERE /





- ajax (for a more complete example that works in older browsers, check the demo

  at ):

js

/ set up XMLHttpRequest /

var url = "test_files/formula_stress_test_ajax.xlsx";

var oReq = new XMLHttpRequest();



oReq.open("GET", url, true);

oReq.responseType = "arraybuffer";



oReq.onload = function(e) {

  var arraybuffer = oReq.response;



  / convert data to binary string /

  var data = new Uint8Array(arraybuffer);

  var arr = new Array();

  for(var i = 0; i != data.length; ++i) arr[i] = String.fromCharCode(data[i]);

  var bstr = arr.join("");



  / Call XLSX /

  var workbook = XLSX.read(bstr, {type:"binary"});



  / DO SOMETHING WITH workbook HERE /

}



oReq.send();





- HTML5 drag-and-drop using readAsBinaryString:

js

/ set up drag-and-drop event /

function handleDrop(e) {

  e.stopPropagation();

  e.preventDefault();

  var files = e.dataTransfer.files;

  var i, f;

  

  for (i = 0, f = files[i]; i != files.length; ++i) {

    var reader = new FileReader();

    var name = f.name;

    reader.onload = function(e) {

      var data = e.target.result;



      / if binary string, read with type 'binary' /

      var workbook = XLSX.read(data, {type: 'binary'});



      / DO SOMETHING WITH workbook HERE /

    };

    reader.readAsBinaryString(f);

  }

}

drop_dom_element.addEventListener('drop', handleDrop, false);





- HTML5 input file element using readAsBinaryString:

js

function handleFile(e) {

  var files = e.target.files;

  var i, f;

  

  for (i = 0, f = files[i]; i != files.length; ++i) {

    var reader = new FileReader();

    var name = f.name;

    reader.onload = function(e) {

      var data = e.target.result;



      var workbook = XLSX.read(data, {type: 'binary'});



      / DO SOMETHING WITH workbook HERE /

    };

    reader.readAsBinaryString(f);

  }

}

input_dom_element.addEventListener('change', handleFile, false);





Working with the Workbook



The full object format is described later in this README.



This example extracts the value stored in cell A1 from the first worksheet:

js

var first_sheet_name = workbook.SheetNames[0];

var address_of_cell = 'A1';



/ Get worksheet /

var worksheet = workbook.Sheets[first_sheet_name];



/ Find desired cell /

var desired_cell = worksheet[address_of_cell];



/ Get the value /

var desired_value = desired_cell.v;





This example iterates through every nonempty of every sheet and dumps values:

js

var sheet_name_list = workbook.SheetNames;



sheet_name_list.forEach(function(y) { / iterate through sheets /

  var worksheet = workbook.Sheets[y];

  for (z in worksheet) {

    / all keys that do not begin with "!" correspond to cell addresses /

    if(z[0] === '!') continue;

    console.log(y + "!" + z + "=" + JSON.stringify(worksheet[z].v));

  }

});





Complete examples:



-  HTML5 File API / Base64 Text / Web Workers



Note that older versions of IE does not support HTML5 File API, so the base64

mode is provided for testing.  On OSX you can get the base64 encoding with:

sh

$





-  XMLHttpRequest



-  node



The node version installs a command line tool

xlsx

 which can read spreadsheet

files and output the contents in various formats.  The source is available at

xlsx.njs

 in the bin directory.



Some helper functions in

XLSX.utils

 generate different views of the sheets:



-

XLSX.utils.sheet_to_csv

 generates CSV

-

XLSX.utils.sheet_to_json

 generates an array of objects

-

XLSX.utils.sheet_to_formulae

 generates a list of formulae



Writing Workbooks



For writing, the first step is to generate output data.  The helper functions

write and writeFile

 will produce the data in various formats suitable for

dissemination.  The second step is to actual share the data with the end point.

Assuming

workbook

 is a workbook object:



- nodejs write to file:

js

/ output format determined by filename /

XLSX.writeFile(workbook, 'out.xlsx');

/ at this point, out.xlsx is a file that you can distribute /





- write to binary string (using FileSaver.js):

js

/ bookType can be 'xlsx' or 'xlsm' or 'xlsb' /

var wopts = { bookType:'xlsx', bookSST:false, type:'binary' };



var wbout = XLSX.write(workbook,wopts);



function s2ab(s) {

  var buf = new ArrayBuffer(s.length);

  var view = new Uint8Array(buf);

  for (var i=0; i!=s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;

  return buf;

}



/ the saveAs call downloads a file on the local machine /

saveAs(new Blob([s2ab(wbout)],{type:""}), "test.xlsx")





Complete examples:



-  generates a simple file

-  writing an array of arrays in nodejs

-  exporting an HTML table



Interface

XLSX

 is the exposed variable in the browser and the exported node variable

XLSX.version

 is the version of the library (added by the build script).

XLSX.SSF

 is an embedded version of the format library.



$3

XLSX.read(data, read_opts) attempts to parse data

XLSX.readFile(filename, read_opts) attempts to read filename

 and parse.



$3

XLSX.write(wb, write_opts) attempts to write the workbook wb

XLSX.writeFile(wb, filename, write_opts) attempts to write wb to filename





$3



Utilities are available in the

XLSX.utils

 object:



Exporting:



-

sheet_to_json

 converts a workbook object to an array of JSON objects.

-

sheet_to_csv

 generates delimiter-separated-values output

-

sheet_to_formulae

 generates a list of the formulae (with value fallbacks)



Cell and cell address manipulation:



-

format_cell

 generates the text value for a cell (using number formats)

-

{en,de}code_{row,col}

 convert between 0-indexed rows/cols and A1 forms.

-

{en,de}code_cell

 converts cell addresses

-

{en,de}code_range

 converts cell ranges



Workbook / Worksheet / Cell Object Description



js-xlsx conforms to the Common Spreadsheet Format (CSF):



$3



Cell address objects are stored as

{c:C, r:R} where C and R

 are 0-indexed

column and row numbers, respectively.  For example, the cell address

 is

represented by the object

{c:1, r:4}

.



Cell range objects are stored as

{s:S, e:E} where S

 is the first cell and

 is the last cell in the range.  The ranges are inclusive.  For example, the

range

A3:B7 is represented by the object {s:{c:0, r:2}, e:{c:1, r:6}}

. Utils

use the following pattern to walk each of the cells in a range:

js

for(var R = range.s.r; R <= range.e.r; ++R) {

  for(var C = range.s.c; C <= range.e.c; ++C) {

    var cell_address = {c:C, r:R};

  }

}





$3



| Key | Description |

| --- | ----------- |

|

 | raw value (see Data Types section for more info) |

|

 | formatted text (if applicable) |

|

t | cell type: b Boolean, n Number, e error, s String, d

 Date |

|

 | cell formula (if applicable) |

|

 | rich text encoding (if applicable) |

|

 | HTML rendering of the rich text (if applicable) |

|

 | comments associated with the cell ** |

|

 | number format string associated with the cell (if requested) |

|

 | cell hyperlink object (.Target holds link, .tooltip is tooltip) |

|

 | the style/theme of the cell (if applicable) |



Built-in export utilities (such as the CSV exporter) will use the

 text if it

is available.  To change a value, be sure to delete

cell.w

 (or set it to

undefined) before attempting to export. The utilities will regenerate the w



text from the number format (

cell.z

) and the raw value if possible.



Note: The .z attribute is now deprecated.  Use the

 attribute to specify cell styles including number formats.

To specify a number format, use

s.numFmt, e.g. {v: 42145.822, s: { numFmt: "m/dd/yy"}}

 described below.



$3



The raw value is stored in the

v field, interpreted based on the t

 field.



Type

b is the Boolean type. v

 is interpreted according to JS truth tables



Type

e is the Error type. v holds the number and w

 holds the common name:



| Value | Error Meaning |

| ----: | :------------ |

|  0x00 | #NULL!        |

|  0x07 | #DIV/0!       |

|  0x0F | #VALUE!       |

|  0x17 | #REF!         |

|  0x1D | #NAME?        |

|  0x24 | #NUM!         |

|  0x2A | #N/A          |

|  0x2B | #GETTING_DATA |



Type

 is the Number type. This includes all forms of data that Excel stores

as numbers, such as dates/times and Boolean fields.  Excel exclusively uses data

that can be fit in an IEEE754 floating point number, just like JS Number, so the

v field holds the raw number. The w

 field holds formatted text.



Type

d is the Date type, generated only when the option cellDates

 is passed.

Since JSON does not have a natural Date type, parsers are generally expected to

store ISO 8601 Date strings like you would get from

date.toISOString()

.  On

the other hand, writers and exporters should be able to handle date strings and

JS Date objects.  Note that Excel disregards the timezone modifier and treats all

dates in the local timezone.  js-xlsx does not correct for this error.



Type

s is the String type. v

 should be explicitly stored as a string to

avoid possible confusion.





$3



Each key that does not start with

! maps to a cell (using A-1

 notation)

worksheet[address]

 returns the cell object for the specified address.



Special worksheet keys (accessible as

worksheet[key], each starting with !

):



-

ws['!ref']

: A-1 based range representing the worksheet range. Functions that

  work with sheets should use this parameter to determine the range.  Cells that

  are assigned outside of the range are not processed.  In particular, when

  writing a worksheet by hand, be sure to update the range.  For a longer

  discussion, see 



  Functions that handle worksheets should test for the presence of

!ref

 field.

  If the

!ref

 is omitted or is not a valid range, functions are free to treat

  the sheet as empty or attempt to guess the range.  The standard utilities that

  ship with this library treat sheets as empty (for example, the CSV output is an

  empty string).



  When reading a worksheet with the

sheetRows

 property set, the ref parameter

  will use the restricted range.  The original range is set at

ws['!fullref']

ws['!cols']

: array of column properties objects.  Column widths are actually

  stored in files in a normalized manner, measured in terms of the "Maximum

  Digit Width" (the largest width of the rendered digits 0-9, in pixels).  When

  parsed, the column objects store the pixel width in the

wpx

 field, character

  width in the

wch field, and the maximum digit width in the MDW

 field.



-

ws['!merges']

: array of range objects corresponding to the merged cells in

  the worksheet.  Plaintext utilities are unaware of merge cells.  CSV export

  will write all cells in the merge range if they exist, so be sure that only

  the first cell (upper-left) in the range is set.



-

ws['!printHeader']: array of row indices for repeating row headers on print, e.g. [1:1]

 to repeat just the first row.



The following properties are currently used when generating an XLSX file, but not yet parsed:



-

ws['!rowBreaks']: array of row break points, e.g. [16,32]

ws['!colBreaks']: array of col break points, e.g. [8,16]

ws['!pageSetup']: {scale: '100', orientation: 'portrait'||'landscape'}
- ws['!printHeader']: array of first and last row indexes for repeat header on printing, e.g. [1,1] to repeat just first row
- ws['!freeze']: string cell reference for breakpoint, e.g. the following will freeze the first row and first column:
{
xSplit: "1",
ySplit: "1",
topLeftCell: "B2",
activePane: "bottomRight",
state: "frozen"
}

$3

workbook.SheetNames is an ordered list of the sheets in the workbook

wb.Sheets[sheetname] returns an object representing the worksheet.

wb.Props is an object storing the standard properties. The following properties are currently used when
generating an XLSX file, but not yet parsed:
- title
- subject
- description
- keywords
- creator

wb.Custprops stores custom properties. Since the XLS standard properties deviate from the XLSX
standard, XLS parsing stores core properties in both places. .

Parsing Options

The exported read and readFile functions accept an options argument:

| Option Name | Default | Description |
| :---------- | ------: | :---------- |
| cellFormula | true | Save formulae to the .f field ** |
| cellHTML | true | Parse rich text and save HTML to the .h field |
| cellNF | false | Save number format string to the .z field |
| cellStyles | false | Save style/theme info to the .s field |
| cellDates | false | Store dates as type d (default is n) ** |
| sheetStubs | false | Create cell objects for stub cells |
| sheetRows | 0 | If >0, read the first sheetRows rows ** |
| bookDeps | false | If true, parse calculation chains |
| bookFiles | false | If true, add raw files to book object ** |
| bookProps | false | If true, only parse enough to get book metadata ** |
| bookSheets | false | If true, only parse enough to get the sheet names |
| bookVBA | false | If true, expose vbaProject.bin to vbaraw field ** |
| password | "" | If defined and file is encrypted, use password ** |

- cellFormula option only applies to formats that require extra processing to
parse formulae (XLS/XLSB).
- Even if cellNF is false, formatted text will be generated and saved to .w
- In some cases, sheets may be parsed even if bookSheets is false.
- bookSheets and bookProps combine to give both sets of information
- Deps will be an empty object if bookDeps is falsy
- bookFiles behavior depends on file type:
* keys array (paths in the ZIP) for ZIP-based formats
* files hash (mapping paths to objects representing the files) for ZIP
* cfb object for formats using CFB containers
- sheetRows-1 rows will be generated when looking at the JSON object output
(since the header row is counted as a row when parsing the data)
- bookVBA merely exposes the raw vba object. It does not parse the data.
- cellDates currently does not convert numerical dates to JS dates.
- Currently only XOR encryption is supported. Unsupported error will be thrown
for files employing other encryption methods.

The defaults are enumerated in bits/84_defaults.js

Writing Options

The exported write and writeFile functions accept an options argument:

| Option Name | Default | Description |
| :---------- | ------: | :---------- |
| cellDates | false | Store dates as type d (default is n) |
| bookSST | false | Generate Shared String Table ** |
| bookType | 'xlsx' | Type of Workbook ("xlsx" or "xlsm" or "xlsb") |
| showGridLines | true | Show gridlines on all pages |
| tabSelected | '1' | Initial tab selected |
| Props | null | Workbook properties |

- bookSST is slower and more memory intensive, but has better compatibility
with older versions of iOS Numbers
- bookType = 'xlsb' is stubbed and far from complete
- The raw data is the only thing guaranteed to be saved. Formulae, formatting,
and other niceties may not be serialized (pending CSF standardization)
- cellDates only applies to XLSX output and is not guaranteed to work with
third-party readers. Excel itself does not usually write cells with type d
so non-Excel tools may ignore the data or blow up in the presence of dates.
- showGridLines and tabSelected are currently used when generating an XLSX file but not yet parse.
- Props specifies workbook properties

Cell Styles

Cell styles are specified by a style object that roughly parallels the OpenXML structure. The style object has five
top-level attributes: fill, font, numFmt, alignment, and border.

| Style Attribute | Sub Attributes | Values |
| :-------------- | :------------- | :------------- |
| fill | patternType | "solid" or "none"
| | fgColor | COLOR_SPEC
| | bgColor | COLOR_SPEC
| font | name | "Calibri" // default
| | sz | "11" // font size in points
| | color | COLOR_SPEC
| | bold | true or false
| | underline | true or false
| | italic | true or false
| | strike | true or false
| | outline | true or false
| | shadow | true or false
| | vertAlign | true or false
| numFmt | | "0" // integer index to built in formats, see StyleBuilder.SSF property
| | | "0.00%" // string matching a built-in format, see StyleBuilder.SSF
| | | "0.0%" // string specifying a custom format
| | | "0.00%;\$0.00%\$;\\-;@" // string specifying a custom format, escaping special characters
| | | "m/dd/yy" // string a date format using Excel's format notation
| alignment | vertical | "bottom" or "center" or "top"
| | horizontal | "bottom" or "center" or "top"
| | wrapText | true or false
| | readingOrder | 2 // for right-to-left
| | textRotation | Number from 0 to 180 or 255 (default is 0)
| | | 90 is rotated up 90 degrees
| | | 45 is rotated up 45 degrees
| | | 135 is rotated down 45 degrees
| | | 180 is rotated down 180 degrees
| | | 255 is special, aligned vertically
| border | top | { style: BORDER_STYLE, color: COLOR_SPEC }
| | bottom | { style: BORDER_STYLE, color: COLOR_SPEC }
| | left | { style: BORDER_STYLE, color: COLOR_SPEC }
| | right | { style: BORDER_STYLE, color: COLOR_SPEC }
| | diagonal | { style: BORDER_STYLE, color: COLOR_SPEC }
| | diagonalUp | true or false
| | diagonalDown | true or false

COLOR_SPEC: Colors for fill, font, and border are specified as objects, either:
* { auto: 1} specifying automatic values
* { rgb: "FFFFAA00" } specifying a hex ARGB value
* { theme: "1", tint: "-0.25"} specifying an integer index to a theme color and a tint value (default 0)
* { indexed: 64} default value for fill.bgColor

BORDER_STYLE: Border style is a string value which may take on one of the following values:
* thin
* medium
* thick
* dotted
* hair
* dashed
* mediumDashed
* dashDot
* mediumDashDot
* dashDotDot
* mediumDashDotDot
* slantDashDot

Borders for merged areas are specified for each cell within the merged area. So to apply a box border to a merged area of 3x3 cells, border styles would need to be specified for eight different cells:
* left borders for the three cells on the left,
* right borders for the cells on the right
* top borders for the cells on the top
* bottom borders for the cells on the left

Tested Environments

- NodeJS 0.8, 0.10 (latest release), 0.11.14 (unstable), io.js
- IE 6/7/8/9/10/11 using Base64 mode (IE10/11 using HTML5 mode)
- FF 18 using Base64 or HTML5 mode
- Chrome 24 using Base64 or HTML5 mode

Tests utilize the mocha testing framework. Travis-CI and Sauce Labs links:

- for XLSX module in nodejs
- for XLS* modules
- for XLS* modules using Sauce Labs

Test Files

Test files are housed in another repo.

Running make init will refresh the test_files submodule and get the files.

Testing

make test will run the node-based tests. To run the in-browser tests, clone
the oss.sheetjs.com repo and
replace the xlsx.js file (then fire up the browser and go to stress.html):

``

sh

$ cp xlsx.js ../SheetJS.github.io

$ cd ../SheetJS.github.io

$ simplehttpserver # or "python -mSimpleHTTPServer" or "serve"

$ open -a Chromium.app http://localhost:8000/stress.html





For a much smaller test, run

make test_misc

.



Contributing



Due to the precarious nature of the Open Specifications Promise, it is very

important to ensure code is cleanroom.  Consult CONTRIBUTING.md



The xlsx.js file is constructed from the files in the

bits

 subdirectory. The

build script (run

make

) will concatenate the individual bits to produce the

script.  Before submitting a contribution, ensure that running make will produce

the xlsx.js file exactly.  The simplest way to test is to move the script:

sh

$ mv xlsx.js xlsx.new.js

$ make

$ diff xlsx.js xlsx.new.js





To produce the dist files, run

make dist`. The dist files are updated in each
version release and should not be committed between versions.

License

Please consult the attached LICENSE file for details. All rights not explicitly
granted by the Apache 2.0 license are reserved by the Original Author.

It is the opinion of the Original Author that this code conforms to the terms of
the Microsoft Open Specifications Promise, falling under the same terms as
OpenOffice (which is governed by the Apache License v2). Given the vagaries of
the promise, the Original Author makes no legal claim that in fact end users are
protected from future actions. It is highly recommended that, for commercial
uses, you consult a lawyer before proceeding.

References

ISO/IEC 29500:2012(E) "Information technology — Document description and processing languages — Office Open XML File Formats"

OSP-covered specifications:

- [MS-XLSB]: Excel (.xlsb) Binary File Format
- [MS-XLSX]: Excel (.xlsx) Extensions to the Office Open XML SpreadsheetML File Format
- [MS-OE376]: Office Implementation Information for ECMA-376 Standards Support
- [MS-CFB]: Compound File Binary File Format
- [MS-XLS]: Excel Binary File Format (.xls) Structure Specification
- [MS-ODATA]: Open Data Protocol (OData)
- [MS-OFFCRYPTO]: Office Document Cryptography Structure
- [MS-OLEDS]: Object Linking and Embedding (OLE) Data Structures
- [MS-OLEPS]: Object Linking and Embedding (OLE) Property Set Data Structures
- [MS-OSHARED]: Office Common Data Types and Objects Structures
- [MS-OVBA]: Office VBA File Format Structure
- [MS-CTXLS]: Excel Custom Toolbar Binary File Format
- [MS-XLDM]: Spreadsheet Data Model File Format
- [MS-EXSPXML3]: Excel Calculation Version 2 Web Service XML Schema
- [XLS]: Microsoft Office Excel 97-2007 Binary File Format Specification

Open Document Format for Office Applications Version 1.2 (29 September 2011)

Badges

![Build Status](https://travis-ci.org/SheetJS/js-xlsx)

![Coverage Status](https://coveralls.io/r/SheetJS/js-xlsx?branch=master)

xlsx-style

About the fork of xlsx-style to xlsx

Supported formats

Installation

With npm:

``

sh

npm install xlsx-style --save





In the browser:

html





With bower:

sh

bower install js-xlsx-style#beta





CDNjs automatically pulls the latest version and makes all versions available at





Optional Modules



The node version automatically requires modules for additional features.  Some

of these modules are rather large in size and are only needed in special

circumstances, so they do not ship with the core.  For browser use, they must

be included directly:

html





An appropriate version for each dependency is included in the dist/ directory.



The complete single-file version is generated at

dist/xlsx.full.min.js





ECMAScript 5 Compatibility



Since xlsx.js uses ES5 functions like

Array#forEach

, older browsers require

Polyfills.  This repo and the gh-pages branch include

a shim



To use the shim, add the shim before the script tag that loads xlsx.js:

html





Parsing Workbooks



For parsing, the first step is to read the file.  This involves acquiring the

data and feeding it into the library.  Here are a few common scenarios:



- node readFile:

js

if(typeof require !== 'undefined') XLSX = require('xlsx');

var workbook = XLSX.readFile('test.xlsx');

/ DO SOMETHING WITH workbook HERE /





- ajax (for a more complete example that works in older browsers, check the demo

  at ):

js

/ set up XMLHttpRequest /

var url = "test_files/formula_stress_test_ajax.xlsx";

var oReq = new XMLHttpRequest();



oReq.open("GET", url, true);

oReq.responseType = "arraybuffer";



oReq.onload = function(e) {

  var arraybuffer = oReq.response;



  / convert data to binary string /

  var data = new Uint8Array(arraybuffer);

  var arr = new Array();

  for(var i = 0; i != data.length; ++i) arr[i] = String.fromCharCode(data[i]);

  var bstr = arr.join("");



  / Call XLSX /

  var workbook = XLSX.read(bstr, {type:"binary"});



  / DO SOMETHING WITH workbook HERE /

}



oReq.send();





- HTML5 drag-and-drop using readAsBinaryString:

js

/ set up drag-and-drop event /

function handleDrop(e) {

  e.stopPropagation();

  e.preventDefault();

  var files = e.dataTransfer.files;

  var i, f;

  

  for (i = 0, f = files[i]; i != files.length; ++i) {

    var reader = new FileReader();

    var name = f.name;

    reader.onload = function(e) {

      var data = e.target.result;



      / if binary string, read with type 'binary' /

      var workbook = XLSX.read(data, {type: 'binary'});



      / DO SOMETHING WITH workbook HERE /

    };

    reader.readAsBinaryString(f);

  }

}

drop_dom_element.addEventListener('drop', handleDrop, false);





- HTML5 input file element using readAsBinaryString:

js

function handleFile(e) {

  var files = e.target.files;

  var i, f;

  

  for (i = 0, f = files[i]; i != files.length; ++i) {

    var reader = new FileReader();

    var name = f.name;

    reader.onload = function(e) {

      var data = e.target.result;



      var workbook = XLSX.read(data, {type: 'binary'});



      / DO SOMETHING WITH workbook HERE /

    };

    reader.readAsBinaryString(f);

  }

}

input_dom_element.addEventListener('change', handleFile, false);





Working with the Workbook



The full object format is described later in this README.



This example extracts the value stored in cell A1 from the first worksheet:

js

var first_sheet_name = workbook.SheetNames[0];

var address_of_cell = 'A1';



/ Get worksheet /

var worksheet = workbook.Sheets[first_sheet_name];



/ Find desired cell /

var desired_cell = worksheet[address_of_cell];



/ Get the value /

var desired_value = desired_cell.v;





This example iterates through every nonempty of every sheet and dumps values:

js

var sheet_name_list = workbook.SheetNames;



sheet_name_list.forEach(function(y) { / iterate through sheets /

  var worksheet = workbook.Sheets[y];

  for (z in worksheet) {

    / all keys that do not begin with "!" correspond to cell addresses /

    if(z[0] === '!') continue;

    console.log(y + "!" + z + "=" + JSON.stringify(worksheet[z].v));

  }

});





Complete examples:



-  HTML5 File API / Base64 Text / Web Workers



Note that older versions of IE does not support HTML5 File API, so the base64

mode is provided for testing.  On OSX you can get the base64 encoding with:

sh

$





-  XMLHttpRequest



-  node



The node version installs a command line tool

xlsx

 which can read spreadsheet

files and output the contents in various formats.  The source is available at

xlsx.njs

 in the bin directory.



Some helper functions in

XLSX.utils

 generate different views of the sheets:



-

XLSX.utils.sheet_to_csv

 generates CSV

-

XLSX.utils.sheet_to_json

 generates an array of objects

-

XLSX.utils.sheet_to_formulae

 generates a list of formulae



Writing Workbooks



For writing, the first step is to generate output data.  The helper functions

write and writeFile

 will produce the data in various formats suitable for

dissemination.  The second step is to actual share the data with the end point.

Assuming

workbook

 is a workbook object:



- nodejs write to file:

js

/ output format determined by filename /

XLSX.writeFile(workbook, 'out.xlsx');

/ at this point, out.xlsx is a file that you can distribute /





- write to binary string (using FileSaver.js):

js

/ bookType can be 'xlsx' or 'xlsm' or 'xlsb' /

var wopts = { bookType:'xlsx', bookSST:false, type:'binary' };



var wbout = XLSX.write(workbook,wopts);



function s2ab(s) {

  var buf = new ArrayBuffer(s.length);

  var view = new Uint8Array(buf);

  for (var i=0; i!=s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;

  return buf;

}



/ the saveAs call downloads a file on the local machine /

saveAs(new Blob([s2ab(wbout)],{type:""}), "test.xlsx")





Complete examples:



-  generates a simple file

-  writing an array of arrays in nodejs

-  exporting an HTML table



Interface

XLSX

 is the exposed variable in the browser and the exported node variable

XLSX.version

 is the version of the library (added by the build script).

XLSX.SSF

 is an embedded version of the format library.



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XLSX.read(data, read_opts) attempts to parse data

XLSX.readFile(filename, read_opts) attempts to read filename

 and parse.



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XLSX.write(wb, write_opts) attempts to write the workbook wb

XLSX.writeFile(wb, filename, write_opts) attempts to write wb to filename





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Utilities are available in the

XLSX.utils

 object:



Exporting:



-

sheet_to_json

 converts a workbook object to an array of JSON objects.

-

sheet_to_csv

 generates delimiter-separated-values output

-

sheet_to_formulae

 generates a list of the formulae (with value fallbacks)



Cell and cell address manipulation:



-

format_cell

 generates the text value for a cell (using number formats)

-

{en,de}code_{row,col}

 convert between 0-indexed rows/cols and A1 forms.

-

{en,de}code_cell

 converts cell addresses

-

{en,de}code_range

 converts cell ranges



Workbook / Worksheet / Cell Object Description



js-xlsx conforms to the Common Spreadsheet Format (CSF):



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Cell address objects are stored as

{c:C, r:R} where C and R

 are 0-indexed

column and row numbers, respectively.  For example, the cell address

 is

represented by the object

{c:1, r:4}

.



Cell range objects are stored as

{s:S, e:E} where S

 is the first cell and

 is the last cell in the range.  The ranges are inclusive.  For example, the

range

A3:B7 is represented by the object {s:{c:0, r:2}, e:{c:1, r:6}}

. Utils

use the following pattern to walk each of the cells in a range:

js

for(var R = range.s.r; R <= range.e.r; ++R) {

  for(var C = range.s.c; C <= range.e.c; ++C) {

    var cell_address = {c:C, r:R};

  }

}





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| Key | Description |

| --- | ----------- |

|

 | raw value (see Data Types section for more info) |

|

 | formatted text (if applicable) |

|

t | cell type: b Boolean, n Number, e error, s String, d

 Date |

|

 | cell formula (if applicable) |

|

 | rich text encoding (if applicable) |

|

 | HTML rendering of the rich text (if applicable) |

|

 | comments associated with the cell ** |

|

 | number format string associated with the cell (if requested) |

|

 | cell hyperlink object (.Target holds link, .tooltip is tooltip) |

|

 | the style/theme of the cell (if applicable) |



Built-in export utilities (such as the CSV exporter) will use the

 text if it

is available.  To change a value, be sure to delete

cell.w

 (or set it to

undefined) before attempting to export. The utilities will regenerate the w



text from the number format (

cell.z

) and the raw value if possible.



Note: The .z attribute is now deprecated.  Use the

 attribute to specify cell styles including number formats.

To specify a number format, use

s.numFmt, e.g. {v: 42145.822, s: { numFmt: "m/dd/yy"}}

 described below.



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The raw value is stored in the

v field, interpreted based on the t

 field.



Type

b is the Boolean type. v

 is interpreted according to JS truth tables



Type

e is the Error type. v holds the number and w

 holds the common name:



| Value | Error Meaning |

| ----: | :------------ |

|  0x00 | #NULL!        |

|  0x07 | #DIV/0!       |

|  0x0F | #VALUE!       |

|  0x17 | #REF!         |

|  0x1D | #NAME?        |

|  0x24 | #NUM!         |

|  0x2A | #N/A          |

|  0x2B | #GETTING_DATA |



Type

 is the Number type. This includes all forms of data that Excel stores

as numbers, such as dates/times and Boolean fields.  Excel exclusively uses data

that can be fit in an IEEE754 floating point number, just like JS Number, so the

v field holds the raw number. The w

 field holds formatted text.



Type

d is the Date type, generated only when the option cellDates

 is passed.

Since JSON does not have a natural Date type, parsers are generally expected to

store ISO 8601 Date strings like you would get from

date.toISOString()

.  On

the other hand, writers and exporters should be able to handle date strings and

JS Date objects.  Note that Excel disregards the timezone modifier and treats all

dates in the local timezone.  js-xlsx does not correct for this error.



Type

s is the String type. v

 should be explicitly stored as a string to

avoid possible confusion.





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Each key that does not start with

! maps to a cell (using A-1

 notation)

worksheet[address]

 returns the cell object for the specified address.



Special worksheet keys (accessible as

worksheet[key], each starting with !

):



-

ws['!ref']

: A-1 based range representing the worksheet range. Functions that

  work with sheets should use this parameter to determine the range.  Cells that

  are assigned outside of the range are not processed.  In particular, when

  writing a worksheet by hand, be sure to update the range.  For a longer

  discussion, see 



  Functions that handle worksheets should test for the presence of

!ref

 field.

  If the

!ref

 is omitted or is not a valid range, functions are free to treat

  the sheet as empty or attempt to guess the range.  The standard utilities that

  ship with this library treat sheets as empty (for example, the CSV output is an

  empty string).



  When reading a worksheet with the

sheetRows

 property set, the ref parameter

  will use the restricted range.  The original range is set at

ws['!fullref']

ws['!cols']

: array of column properties objects.  Column widths are actually

  stored in files in a normalized manner, measured in terms of the "Maximum

  Digit Width" (the largest width of the rendered digits 0-9, in pixels).  When

  parsed, the column objects store the pixel width in the

wpx

 field, character

  width in the

wch field, and the maximum digit width in the MDW

 field.



-

ws['!merges']

: array of range objects corresponding to the merged cells in

  the worksheet.  Plaintext utilities are unaware of merge cells.  CSV export

  will write all cells in the merge range if they exist, so be sure that only

  the first cell (upper-left) in the range is set.



-

ws['!printHeader']: array of row indices for repeating row headers on print, e.g. [1:1]

 to repeat just the first row.



The following properties are currently used when generating an XLSX file, but not yet parsed:



-

ws['!rowBreaks']: array of row break points, e.g. [16,32]

ws['!colBreaks']: array of col break points, e.g. [8,16]

$3

Parsing Options

Writing Options

Cell Styles

Tested Environments

Test Files

Test files are housed in another repo.

Running make init will refresh the test_files submodule and get the files.

Testing

make test will run the node-based tests. To run the in-browser tests, clone
the oss.sheetjs.com repo and
replace the xlsx.js file (then fire up the browser and go to stress.html):

``

sh

$ cp xlsx.js ../SheetJS.github.io

$ cd ../SheetJS.github.io

$ simplehttpserver # or "python -mSimpleHTTPServer" or "serve"

$ open -a Chromium.app http://localhost:8000/stress.html





For a much smaller test, run

make test_misc

.



Contributing



Due to the precarious nature of the Open Specifications Promise, it is very

important to ensure code is cleanroom.  Consult CONTRIBUTING.md



The xlsx.js file is constructed from the files in the

bits

 subdirectory. The

build script (run

make

) will concatenate the individual bits to produce the

script.  Before submitting a contribution, ensure that running make will produce

the xlsx.js file exactly.  The simplest way to test is to move the script:

sh

$ mv xlsx.js xlsx.new.js

$ make

$ diff xlsx.js xlsx.new.js





To produce the dist files, run

make dist`. The dist files are updated in each
version release and should not be committed between versions.

License

References

Badges

![Build Status](https://travis-ci.org/SheetJS/js-xlsx)

![Coverage Status](https://coveralls.io/r/SheetJS/js-xlsx?branch=master)