Local clone of [PhpSpreadsheet](https://github.com/PHPOffice/PhpSpreadsheet/)
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oleibman 97a80f383c
Improve HTML Writer (#1464)
There are a number of situations where HTML write was producing
HTML which could not be validated. These include:

  - inconsistent use of backslash terminating META, IMG, and COL tags
  - @page style tags in body rather than header. Aside from being
    non-standard, HTML Reader treats those as spreadsheet data.
  - <div style="page-break-before:always" />, a construct which is
    usually better handled through css anyhow.
  - no alt tag for images (drawings and charts)

Other problems:

  - Windows file names not handled correctly for images
  - Memory drawings not handled in extendRowsForChartsAndImages
  - No handling of different values for showing gridlines
    for screen and print
  - Mpdf and Dompdf do not require the use of inline css.
    Tcpdf remains a holdout in the use of this inferior approach.
  - no need to chunk base64 encoding of embedded images
  - support for colors in number format was buggy (html tags
    run through htmlspecialchars)

Code has been refactored when practical to reduce the number of
very large functions.

Coverage is now 100% for the entire HTML Writer module,
from 75% lines and 39% methods beforehand.

All functions dealing only with charts
are bypassed for coverage because the version of Jpgraph available in
Composer is not suitable for PHP7. The code will, nevertheless,
run successfully, but with warning messages. I have confirmed that
the code is entirely covered, without warnings, when the current
version of Jpgraph is used in lieu of the one available in Composer.
I will be glad to revisit this when the Jpgraph problem is resolved.

Directory PhpSpreadsheetTests/Writer/Html was created to house
the new tests. It seemed logical to move HtmlCommentsTest to
the new directory from PhpSpreadsheetTests/Functional.

A function to generate all the HTML is useful, especially for testing,
but also in lieu of the multiple other generate* functions. I have
added and documented generateHTMLAll.

The documentation for the generate* functions (a) produces invalid html,
(b) produces html which cannot be handled correctly by HTML reader,
and (c) even if those were correct, does not actually affect
the display of the spreadsheet. The documentation has been replaced
by a valid, and more instructive, example.

The (undocumented) useEmbeddedCss property, and the functions
to test and set it are no longer needed. Rather than breaking
existing code by deleting them, I marked the functions deprecated.

This change borrows a change to LocaleFloatsTest from
pull request 1456, submitted a little over a week before this one.


## Improve NumberFormat Support

First phase of this change included correcting NumberFormat handling
in HTML Writer. Certain complex formats could not be handled without
changes to Style/NumberFormat, and I did not wish to combine those changes.

Once the original change had been pushed, I took this part of it back up.
HTML Writer can now handle conditions in formats like:
[Blue][>=3000.5]$#,##0.00;[Red][<0]$#,##0.00;$#,##0.00
In testing, I discovered several errors and omissions
in handling of some other formats.
These are now corrected, and tests added.
2020-05-18 12:43:18 +09:00
.github Prefer https:// URLs when available in docs & comments 2018-10-28 13:55:00 +11:00
bin Keep sample bootstrap purely in samples 2020-05-17 18:51:13 +09:00
docs Improve HTML Writer (#1464) 2020-05-18 12:43:18 +09:00
samples Improve HTML Writer (#1464) 2020-05-18 12:43:18 +09:00
src/PhpSpreadsheet Improve HTML Writer (#1464) 2020-05-18 12:43:18 +09:00
tests Improve HTML Writer (#1464) 2020-05-18 12:43:18 +09:00
.gitattributes Limit composer package to `src/` 2020-05-17 12:47:55 +09:00
.gitignore Move PHP-CS-Fixer cache file out of the project to avoid IDE annoyance 2018-10-21 15:34:33 +11:00
.php_cs.dist Take advantage of PHP 7.1 syntax 2019-07-24 23:43:28 -07:00
.scrutinizer.yml Revert "Accept no change of coverage" 2017-12-23 20:59:18 +09:00
.travis.yml Follow redirect to download phpDocumentor 2020-05-02 21:45:11 +09:00
CHANGELOG.PHPExcel.md Prefer https:// URLs when available in docs & comments 2018-10-28 13:55:00 +11:00
CHANGELOG.md Save Excel 2010+ Functions Properly 2020-05-18 12:37:35 +09:00
CONTRIBUTING.md `master` is the new default branch 2019-01-02 15:28:38 +11:00
LICENSE Change license from LGPL 2.1 to MIT 2019-11-17 18:08:34 +01:00
README.md README - add link to migration path to show people easier way (#1460) 2020-05-16 20:40:36 +09:00
composer.json Add maennchen/zipstream-php dependency 2020-04-27 21:26:54 +02:00
composer.lock Add maennchen/zipstream-php dependency 2020-04-27 21:26:54 +02:00
mkdocs.yml `master` is the new default branch 2019-01-02 15:28:38 +11:00
phpunit.xml.dist Use current PHPUnit configuration xsd 2020-05-17 18:38:49 +09:00

README.md

PhpSpreadsheet

Build Status Code Quality Code Coverage Total Downloads Latest Stable Version License Join the chat at https://gitter.im/PHPOffice/PhpSpreadsheet

PhpSpreadsheet is a library written in pure PHP and providing a set of classes that allow you to read from and to write to different spreadsheet file formats, like Excel and LibreOffice Calc.

Documentation

Read more about it, including install instructions, in the official documentation. Or check out the API documentation.

Please ask your support questions on StackOverflow, or have a quick chat on Gitter.

PHPExcel vs PhpSpreadsheet ?

PhpSpreadsheet is the next version of PHPExcel. It breaks compatibility to dramatically improve the code base quality (namespaces, PSR compliance, use of latest PHP language features, etc.).

Because all efforts have shifted to PhpSpreadsheet, PHPExcel will no longer be maintained. All contributions for PHPExcel, patches and new features, should target PhpSpreadsheet master branch.

Do you need to migrate? There is an automated tool for that.

License

PhpSpreadsheet is licensed under MIT.