Hi,
while i was testing an application that generates a PDF file, I found a
problem with the render() function of the WPdfRenderer widget. Under
some conditions, the render() function seems to fail, entering in some
kind of never ending loop without triggering any exception nor errors
messages, even though the application server continues responding.
Finally I found that some specific kind of data in the input html string
to the render() function generates the unexpected behavior, specifically
character strings using accents and other non alphabetic symbols.
I did the following test: in the WidgetGallery application I replaced an
existing string within the report.xml example file with the above
commented character pattern and the results are the same: the render()
function enters in what seems to be a never ending loop when you try to
generate the PDF file. I have attached the report.xml file with the
trouble maker character pattern ("Superávit/Déficit", see line 125). By
the way, if you add an space character at the left and at the right of
the '/' character (i.e. "Superávit / Déficit"), the problem disappears.
Could you check if this is a problem with the render() function itself
or if this is something related to the libharu library?
Thanks. Regards.
______________________
Mario Diethelm Guallar
<?xml version="1.0" encoding="UTF-8" ?>
<messages>
<message id="report.example">
<div>
<h1>Hello World!</h1>
<style>
span.special {
color: #FF0000;
font-weight: bold;
}
#main_table {
font-size: 8pt;
margin-left: auto;
margin-right: auto;
}
#main_table .special {
color: #FF0000;
}
#main_table th {
border-bottom: 1px solid black;
}
</style>
<p>
This could be a <span style="font-size:20pt">big</span> deal
to your project, since this modest renderer does support many
things commonly needed to render reports, such as:
</p>
Unordered lists:
<ul>
<li>with one ...</li>
<li>or <em>more</em> items</li>
</ul>
Ordered lists:
<ol>
<li>it's a basic thing</li>
<li>and they come in good use</li>
</ol>
<div style="float: right; border: 1px solid black; background-color: #EEE; padding: 10px; margin-left: 10px; margin-bottom: 10px; width: 200px">
<img style="float: right" src="data:image/png;base64,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" />
That's a logo to look for, right there.
</div>
<p>
The renderer has fairly complete support for layout of floats
(like images), including nested floats and their interactions
with other inline and block contents.
</p>
<p>
There is obvious support for <span style="color: #11E">colors</span>,
different font sizes - <span style="font-size:15pt">big</span> and
<span style="font-size: 9pt">small</span> - and other fonts; including
support for <span style="font-family: serif">true type</span> fonts.
</p>
<p>
You can attach an external style sheet, highlighting items that need
<span class="special">special attention</span>.
</p>
<p>
Reports typically contain tables, and these are also well
supported; including multi-page ones, with automatic repetition
of table headers.
<table id="main_table">
<thead>
<tr>
<th>FirstName</th>
<th>LastName</th>
<th>Company</th>
<th>Address</th>
<th>City</th>
<th>County</th>
<th>State</th>
</tr>
</thead>
<tbody>
<tr>
<td>Essie</td>
<td>Vaill</td>
<td>Litronic Industries</td>
<td>14225 Hancock Dr</td>
<td>Anchorage</td>
<td>Anchorage</td>
<td>AK</td>
</tr>
<tr>
<td>Cruz</td>
<td>Roudabush</td>
<td>Meridian Products</td>
<td>2202 S Central Ave</td>
<td>Phoenix</td>
<td>Maricopa</td>
<td>AZ</td>
</tr>
<tr>
<td>Billie</td>
<td>Tinnes</td>
<td>D & M Plywood Inc</td>
<td>28 W 27th St</td>
<td>New York</td>
<td>New York</td>
<td>NY</td>
</tr>
<tr class="special">
<td>Zackary</td>
<td>Mockus</td>
<td>Metropolitan Elevator Co</td>
<td>286 State St</td>
<td>Perth Amboy</td>
<td>Middlesex</td>
<td>NJ</td>
</tr>
<tr>
<td>Rosemarie</td>
<td>Fifield</td>
<td>Superávit/Déficit</td>
<td>3131 N Nimitz Hwy</td>
<td>Honolulu</td>
<td>Honolulu</td>
<td>HI</td>
</tr>
<tr>
<td>Bernard</td>
<td>Laboy</td>
<td>Century 21 Keewaydin Prop</td>
<td>22661 S Frontage Rd</td>
<td>Channahon</td>
<td>Will</td>
<td>IL</td>
</tr>
<tr>
<td>Sue</td>
<td>Haakinson</td>
<td>Kim Peacock Beringhause</td>
<td>9617 N Metro Pky W</td>
<td>Phoenix</td>
<td>Maricopa</td>
<td>AZ</td>
</tr>
<tr class="special">
<td>Valerie</td>
<td>Pou</td>
<td>Sea Port Record One Stop Inc</td>
<td>7475 Hamilton Blvd</td>
<td>Trexlertown</td>
<td>Lehigh</td>
<td>PA</td>
</tr>
<tr>
<td>Lashawn</td>
<td>Hasty</td>
<td>Kpff Consulting Engineers</td>
<td>815 S Glendora Ave</td>
<td>West Covina</td>
<td>Los Angeles</td>
<td>CA</td>
</tr>
<tr>
<td>Marianne</td>
<td>Earman</td>
<td>Albers Technologies Corp</td>
<td>6220 S Orange Blossom Trl</td>
<td>Orlando</td>
<td>Orange</td>
<td>FL</td>
</tr>
<tr>
<td>Justina</td>
<td>Dragaj</td>
<td>Uchner, David D Esq</td>
<td>2552 Poplar Ave</td>
<td>Memphis</td>
<td>Shelby</td>
<td>TN</td>
</tr>
<tr>
<td>Mandy</td>
<td>Mcdonnell</td>
<td>Southern Vermont Surveys</td>
<td>343 Bush St Se</td>
<td>Salem</td>
<td>Marion</td>
<td>OR</td>
</tr>
<tr>
<td>Conrad</td>
<td>Lanfear</td>
<td>Kahler, Karen T Esq</td>
<td>49 Roche Way</td>
<td>Youngstown</td>
<td>Mahoning</td>
<td>OH</td>
</tr>
<tr>
<td>Cyril</td>
<td>Behen</td>
<td>National Paper & Envelope Corp</td>
<td>1650 S Harbor Blvd</td>
<td>Anaheim</td>
<td>Orange</td>
<td>CA</td>
</tr>
<tr>
<td>Shelley</td>
<td>Groden</td>
<td>Norton, Robert L Esq</td>
<td>110 Broadway St</td>
<td>San Antonio</td>
<td>Bexar</td>
<td>TX</td>
</tr>
<tr>
<td>Rosalind</td>
<td>Krenzke</td>
<td>Waldein Manufacturing</td>
<td>7000 Bass Lake Rd</td>
<td>Minneapolis</td>
<td>Hennepin</td>
<td>MN</td>
</tr>
<tr>
<td>Davis</td>
<td>Brevard</td>
<td>Transit Trading Corp</td>
<td>6715 Tippecanoe Rd</td>
<td>Canfield</td>
<td>Mahoning</td>
<td>OH</td>
</tr>
<tr>
<td>Winnie</td>
<td>Reich</td>
<td>Pacific Seating Co</td>
<td>1535 Hawkins Blvd</td>
<td>El Paso</td>
<td>El Paso</td>
<td>TX</td>
</tr>
<tr class="special">
<td>Trudy</td>
<td>Worlds</td>
<td>Shapiro, Mark R Esq</td>
<td>24907 Tibbitts Avenue</td>
<td>Valencia</td>
<td>Los Angeles</td>
<td>CA</td>
</tr>
<tr>
<td>Deshawn</td>
<td>Inafuku</td>
<td>Telair Div Of Teleflex Inc</td>
<td>3508 Leopard St</td>
<td>Corpus Christi</td>
<td>Nueces</td>
<td>TX</td>
</tr>
<tr>
<td>Claudio</td>
<td>Loose</td>
<td>Audiotek Electronics</td>
<td>286 State St</td>
<td>Perth Amboy</td>
<td>Middlesex</td>
<td>NJ</td>
</tr>
<tr>
<td>Sal</td>
<td>Pindell</td>
<td>Wrigley, Robert I Esq</td>
<td>1112 Se 1st St</td>
<td>Evansville</td>
<td>Vanderburgh</td>
<td>IN</td>
</tr>
<tr>
<td>Cristina</td>
<td>Sharper</td>
<td>Tax Office</td>
<td>111 W 40th St</td>
<td>New York</td>
<td>New York</td>
<td>NY</td>
</tr>
<tr>
<td>Cary</td>
<td>Mccamey</td>
<td>Williams Scotsman</td>
<td>100 E Broad St</td>
<td>Columbus</td>
<td>Franklin</td>
<td>OH</td>
</tr>
<tr>
<td>Haley</td>
<td>Rocheford</td>
<td>Davis, Robert L Esq</td>
<td>6030 Greenwood Plaza Blvd</td>
<td>Englewood</td>
<td>Arapahoe</td>
<td>CO</td>
</tr>
<tr>
<td>Dorothea</td>
<td>Sweem</td>
<td>Ehrmann, Rolfe F Esq</td>
<td>100 Thanet Circ</td>
<td>Trenton</td>
<td>Mercer</td>
<td>NJ</td>
</tr>
<tr>
<td>Fannie</td>
<td>Steese</td>
<td>Chiapete, W Richard Esq</td>
<td>926 E ParkAve</td>
<td>Tallahassee</td>
<td>Leon</td>
<td>FL</td>
</tr>
<tr>
<td>Allyson</td>
<td>Gillispie</td>
<td>De Friese Theo & Sons</td>
<td>1722 White Horse Mercerville R</td>
<td>Trenton</td>
<td>Mercer</td>
<td>NJ</td>
</tr>
<tr>
<td>Roger</td>
<td>Seid</td>
<td>Yoshida, Gerald C Esq</td>
<td>3738 N Monroe St</td>
<td>Tallahassee</td>
<td>Leon</td>
<td>FL</td>
</tr>
<tr>
<td>Dollie</td>
<td>Daquino</td>
<td>Jd Edwards & Co</td>
<td>1005 Congress Ave</td>
<td>Austin</td>
<td>Travis</td>
<td>TX</td>
</tr>
<tr>
<td>Eva</td>
<td>Seahorn</td>
<td>Saunders Appraisal Inc</td>
<td>3 Northern Blvd</td>
<td>Amherst</td>
<td>Hillsborough</td>
<td>NH</td>
</tr>
<tr>
<td>Mamie</td>
<td>Mcintee</td>
<td>Jacobs, Brian Realtor</td>
<td>2810 Jacobs Ave</td>
<td>Eureka</td>
<td>Humboldt</td>
<td>CA</td>
</tr>
<tr>
<td>Lashonda</td>
<td>Derouen</td>
<td>Travel Agent Magazine</td>
<td>101 Royal St</td>
<td>Alexandria</td>
<td>Alexandria City</td>
<td>VA</td>
</tr>
<tr>
<td>Jacklyn</td>
<td>Emayo</td>
<td>Super 8 Motel Temple</td>
<td>101 Us Highway 46</td>
<td>Fairfield</td>
<td>Essex</td>
<td>NJ</td>
</tr>
</tbody>
</table>
</p>
<p style="text-align: center">
So, keep it in mind !
</p>
</div>
</message>
</messages>
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