From the documentation on the old Spreadsheet::WriteExcel module
MODIFYING AND REWRITING EXCEL FILES
An Excel file is a binary file within a binary file. It contains sever
+al interlinked checksums and changing even one byte can cause it to b
+ecome corrupted.
As such you cannot simply append or update an Excel file. The only way
+ to achieve this is to read the entire file into memory, make the req
+uired changes or additions and then write the file out again.
You can read and rewrite an Excel file using the Spreadsheet::ParseExc
+el::SaveParser module which is a wrapper around Spreadsheet::ParseExc
+el and Spreadsheet::WriteExcel. It is part of the Spreadsheet::ParseE
+xcel package: http://search.cpan.org/search?dist=Spreadsheet-ParseExc
+el.
However, you can only rewrite the features that Spreadsheet::WriteExce
+l supports so macros, graphs and some other features in the original
+Excel file will be lost. Also, formulas aren't rewritten, only the re
+sult of a formula is written.
The xlsx format is somewhat better documented, but the problem appears to remain.
print "Good ",qw(night morning afternoon evening)[(localtime)[2]/6]," fellow monks."
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|