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laxman954 / granule

Automatically exported from code.google.com/p/granule
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Encountered StackOverflow error if CSS has Base64 encoded images. #25

Open GoogleCodeExporter opened 8 years ago

GoogleCodeExporter commented 8 years ago 
What steps will reproduce the problem?
1. Add a css definition with 'background' which has base64 encoded image. 
   Ex.
.loading 
{   background:url("data:image/gif;base64,R0lGODlhIAAgAOZsAN3d3fX19fr6+unp6a2trays
rICAgNra2vHx8d/f3/Ly8vn5+evr6+Tk5OPj4/7+/uDg4Obm5uXl5fDw8Pv7+/z8/O/v7/Pz88jIyO3t
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w9nZ2f///////wAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA
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ggIMSUYsn5UbB6acnqAdMwmDGTKnwqqgHh9ssMtpqc1okhgaEkuWbAg9KpGBADs=") center 
center no-repeat;
}
2. Run application with Granule enabled.

What is the expected output? 
Compressed unified CSS file.

What do you see instead?
Encountered a StackOverflow error. CSS files are not rendered. 

What version of the product are you using? On what operating system?
1.0.9

Please provide any additional information below.

Original issue reported on code.google.com by binaryt...@gmail.com on 26 Oct 2013 at 10:11

GoogleCodeExporter commented 8 years ago 
how can i overcome css encountered error

Original comment by v...@akdesign.in on 7 Feb 2014 at 5:54

GoogleCodeExporter commented 8 years ago 
I see same issue not stackoverfklow error but 
background:url("data:image ....
will be converted to
background:url("style:data:image
any comments?!

Original comment by afattah...@gmail.com on 21 Jun 2014 at 7:27

GoogleCodeExporter commented 8 years ago 
I dont get a stackoverflow, but i do find that granule concatenates a URL into 
the path, which for a Base64 image, its not required. Is there a way to escape 
this?

Original comment by nmo...@tacitknowledge.com on 28 Oct 2014 at 3:51

GoogleCodeExporter commented 8 years ago 
I was able to reproduce it as well using jquery-ui.css (jQuery UI - v1.11.3). 
In the area, where the selector (.ui-progressbar .ui-progressbar-overlay) is 
defined, there is a background image that cause infinite loops in the regexp 
processing.

To reproduce the issue, please use the Java version of the regexp tester: 
http://myregexp.com/signedJar.html

The pattern (regexp) is:
((?:@import\s+((?:url\(\s*(("(?:\.|[^\"])*"|'(?:\.|[^\'])*')|[^)]*)\s*\))|("(?:\
.|[^\"])*"|'(?:\.|[^\'])*'))))|((?:url\(\s*(("(?:\.|[^\"])*"|'(?:\.|[^\'])*')|[^
)]*)\s*\)))|("(?:\.|[^\"])*"|'(?:\.|[^\'])*')

And the text is (without quotes):
"   background: 
url("data:image/gif;base64,R0lGODlhKAAoAIABAAAAAP///yH/C05FVFNDQVBFMi4wAwEAAAAh+
QQJAQABACwAAAAAKAAoAAACkYwNqXrdC52DS06a7MFZI+4FHBCKoDeWKXqymPqGqxvJrXZbMx7Ttc+w9
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LvoxuJDkU1a1YUZbJ59nSd2ZXhWqbRa2/gF8Gu2DY3iqs7yrq+xBYEkYvFSM8aSSObE+ZgRl1BHFZNr7
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1mMRae9VvWZfeB2XfPkeLmm18lUcBj+p5dnN8jXZ3YIGEhYuOUn45aoCDkp16hl5IjYJvjWKcnoGQpqy
PlpOhr3aElaqrq56Bq7VAAAOw==");"

After you paste everything, please click the "split" button, and you will see 
the StackOverflow error.

Internet says that such issues might appear when regexps have alternative paths 
and big strings: 
https://stackoverflow.com/questions/7509905/java-lang-stackoverflowerror-while-u
sing-a-regex-to-parse-big-strings

Original comment by Vest...@gmail.com on 13 Apr 2015 at 12:14