Yes, I packaged the logic described by Jay into some utility functions in my sugar/xml module to make it easier to read & write an XML file with its prolog:
http://pkg-build.racket-lang.org/doc/sugar/#%28part._.X.M.L%29 On Tue, Apr 21, 2015 at 7:25 AM, Nadeem Abdul Hamid <nad...@acm.org> wrote: > Was there ever a resolution to this question? > > > On Mon, Mar 30, 2015 at 2:12 PM, Matthew Butterick <m...@mbtype.com> wrote: > >> I understand that the preamble of an XML file (e.g., a first line like >> <?xml version="1.0" encoding="utf-8"?>) is not part of the X-expression >> representing that file. >> >> That's why in `response/xexpr`, there's an option for adding a preamble. >> [1] >> >> But with static XML files, I'm unclear about how preambles are supposed >> to be handled. Use case: reading an XML file, modifying it, writing it back >> out with the same preamble. >> >> Reading: is the preamble just discarded? Am I supposed to grab it with >> [small shiver] a regular expression? >> >> ;;; >> #lang racket/base >> (require xml) >> (define x (string->xexpr "<?xml version=\"1.0\" >> encoding=\"utf-8\"?><root>hello world</root>")) >> >> > x >> '(root () "hello world") >> ;;; >> >> >> Writing: functions like `xexpr->xml` and `xexpr->string` of course take >> an Xexpr without a preamble. Again, is the intention that it be added >> manually (e.g. with `string-append`)? >> >> >> >> >> [1] >> http://docs.racket-lang.org/web-server/http.html?q=response%2Fxexpr#%28def._%28%28lib._web-server%2Fhttp%2Fxexpr..rkt%29._response%2Fxexpr%29%29 >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Racket Users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to racket-users+unsubscr...@googlegroups.com. >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "Racket Users" group. To unsubscribe from this group and stop receiving emails from it, send an email to racket-users+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
