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https://issues.apache.org/jira/browse/XERCESC-1773?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12556193#action_12556193
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David Bertoni commented on XERCESC-1773:
----------------------------------------
Characters such as the space character are encoded as two hex digits, so if the
code is confused by %202, then the code is broken. It is not correct to escape
an ASCII digit using the same method. See the RFC for more details:
http://www.ietf.org/rfc/rfc2396.txt
I'm confused by this bug report, because you haven't really given enough
information about what your code is trying to do and why you think the URI
"D:\Home\Development\StrawberryFields%202.0" is not handled properly.
> Spaces in Filenames problem with XMLUri::normalizeURI
> -----------------------------------------------------
>
> Key: XERCESC-1773
> URL: https://issues.apache.org/jira/browse/XERCESC-1773
> Project: Xerces-C++
> Issue Type: Bug
> Environment: WindowsXP 64
> Reporter: Brenton Thomas
> Fix For: 2.8.0
>
>
> When using a filename containing spaces that has been escaped by a %20 you
> end up with problems if the space is followed by a number. For example if you
> have a directory "D:\Home\Development\StrawberryFields 2.0" you need to
> escape it to give "D:\Home\Development\StrawberryFields%202.0" - which is
> obviously going to break because it confuses the 2 at the end. To fix this
> you escape the number following the space to give
> "D:\Home\Development\StrawberryFields%20%32.0" .
> This is OK in terms of providing a legal schemaLocation except....
> The routine XMLUri::normalizeURI then takes the escaped name and unescapes
> it to return a form the system recognises. What it needs to do is parse
> through the string and unescape everything - not just the %20
> void XMLUri::normalizeURI(const XMLCh* const systemURI,
> XMLBuffer& normalizedURI)
> {
> const XMLCh* pszSrc = systemURI;
> normalizedURI.reset();
> while (*pszSrc) {
> if ((*(pszSrc) == chPercent)
> && (*(pszSrc+1) == chDigit_2)
> && (*(pszSrc+2) == chDigit_0))
> {
> pszSrc += 3;
> normalizedURI.append(chSpace);
> }
> else
> {
> normalizedURI.append(*pszSrc);
> pszSrc++;
> }
> }
> }
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