Eric, Thank you! I modified some functions in c14n.c to meet my task.
Mikhail On Mon, Jan 29, 2018 at 10:31 PM, Eric S. Eberhard <e...@vicsmba.com> wrote: > My experience is that many surprising companies don't do correct XML. > Walmart for example does not put white space between attributes: > > attr1="value1"attr2="value2" > > I have one company that insists on one line (to CR or LF) for the entire > XML (hard to read and debug). Another won't take lines longer than 1024. > > Once can spend all decade trying to Fedex to change, Walmart to change, > all year changing libxml2, etc. > > I went another way. I have a pre and post filter on my XML that makes it > as I want it. > > So when I get XML I run it through the pre-filter and change as needed > (based on a libxml2 setup XML file!) and when I send it I run it through a > post-filter and change as needed also based on libxml2 setup XML file. > > One can be "right" and waste more time than it is worth ... I dare anyone > to try and "fix" Fedex or Walmart who insists they are correct ... or > dozens of other companies. It is easier to just fix it your self, and then > process it. > > This also has the advantage that the processing code is "clean" -- since > your input and output will be standard (whatever you chose) ... only the > pre/post filters may need work. Of course you need only filter the > goofballs (99% of our stuff goes through as is). > > Another advantage is the pre/post filters don't have to use libxml2 at all > (mine don't) -- read through them "by hand" with whatever language you use > and you can change tags, namespaces, anything you like in any direction. > Just make sure the result is valid! > > Just an idea but libxml2 cannot do everything for everyone -- especially > when huge corporations do as they please. It is a tool kit, not a complete > car ... if you want to rebuild the engine, get the tools out, use them, and > build your engine ... don't expect the tools to do everything. Instead, > just depend on them having all the tools which so far (as a user from way > back when it was libxml.a) it has always worked and been reliable and fast. > > Eric > > On 1/28/2018 4:19 AM, Mikhail Goloborodko wrote: > > Hi All, > > I will appreciate if somebody could help on how to normalize and > canonicalize XML. > > For example > <?xml version="1.0" encoding="WINDOWS-1251"?> > <ed:N1 attr="4583001999" xmlns:ed="urn:ru:ed:v2.0"> > </ed:N> > > I need to get > > <n1:N1 xmlns:n1="urn:cbr-ru:ed:v2.0" attr="4583001999"></n1:N1> > > And for > > <?xml version="1.0" encoding="WINDOWS-1251"?> > <N1 attr="4583001999" xmlns="urn:ru:ed:v2.0"> > <N2 attr="value"></N2> > </N1> > > I need > > <n1:N1 xmlns:n1="urn:ru:ed:v2.0"> attr="4583001999"<n1:N2 > attr="value"></n1:N2></n1:N1> > > In other words I need to remove whitespaces and rewrite namespace prefixes > I use > string src; > xmlChar * canon; > xmlDocPtr xDoc = xmlReadMemory(src.data(), src.size(), nullptr, nullptr, > XML_PARSE_NOBLANKS); > int bytes = xmlC14NDocDumpMemory(xDoc, nullptr, 0, nullptr, 0, & canon); > > It removes whitespaces, need help with namespace prefix rewrite. > > Thank you in advance. > > On Sun, Jan 28, 2018 at 12:41 AM, Mikhail Goloborodko < > mgoloboro...@gmail.com> wrote: > >> Hi, >> >> I need help on how to normalize and canonicalize XML. >> For example >> <?xml version="1.0" encoding="WINDOWS-1251"?> >> <ed:N1 attr="4583001999" xmlns:ed="urn:ru:ed:v2.0"> >> </ed:N> >> >> I need to get >> >> <n1:N1 xmlns:n1="urn:cbr-ru:ed:v2.0" attr="4583001999"></n1:N1> >> >> And for >> >> <?xml version="1.0" encoding="WINDOWS-1251"?> >> <N1 attr="4583001999" xmlns="urn:ru:ed:v2.0"> >> <N2 attr="value"></N2> >> </N1> >> >> I need >> >> <n1:N1 attr="4583001999" xmlns="urn:ru:ed:v2.0"><n1:N2 >> attr="value"></n1:N2></n1:N1> >> >> In other words I need to remove whitespaces and rewrite namespace prefixes >> I use >> string src; >> xmlChar * canon; >> xmlDocPtr xDoc = xmlReadMemory(src.data(), src.size(), nullptr, nullptr, >> XML_PARSE_NOBLANKS); >> int bytes = xmlC14NDocDumpMemory(xDoc, nullptr, 0, nullptr, 0, & canon); >> >> It clearly removes whitespace, need help with namespace prefix rewrite. >> >> Thank you in advance. >> >> Mikhail >> >> > > _______________________________________________ > xml mailing list, project page > http://xmlsoft.org/xml@gnome.orghttps://mail.gnome.org/mailman/listinfo/xml > > > -- > Eric S. Eberhard > VICS > 2933 W Middle Verde Road > Camp Verde, AZ 86322 > > 928-567-3727 work 928-301-7537 cell > http://www.vicsmba.com/index.html (our > work)http://www.vicsmba.com/ourpics/index.html (fun pictures) > >
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