Problem Statement

Create a function that takes a list of character names and a list of corresponding remarks and returns an XML document of elements each with a name attributes and each enclosing its remarks. All elements are to be enclosed in turn, in an outer element. As an example, calling the function with the three names of: And three remarks of: Should produce the XML (but not necessarily with the indentation): The document may include an declaration and document type declaration, but these are optional. If attempting this task by direct string manipulation, the implementation must include code to perform entity substitution for the characters that have entities defined in the XML 1.0 specification. Note: the example is chosen to show correct escaping of XML strings. Note too that although the task is written to take two lists of corresponding data, a single mapping/hash/dictionary of names to remarks is also acceptable. Note to editors: Program output with escaped characters will be viewed as the character on the page so you need to 'escape-the-escapes' to make the RC entry display what would be shown in a plain text viewer (See this). Alternately, output can be placed in tags without any special treatment.

Let's start with the solution:

include ffl/est.fs
include ffl/xos.fs

\ Input lists
0 value names
here ," Emily"
here ," Tam O'Shanter"
here ," April"
here to names
, , ,

0 value remarks
here ,"  Short & shrift"
here ,\" Burns: \"When chapman billies leave the street ...\""
here ,"  Bubbly: I'm > Tam and <= Emily"
here to remarks
, , ,

: s++ ( c-addr1 -- c-addr2 c-addr3 u3 )
  dup cell+ swap @ count
;

\ Create xml writer
tos-create xml

: create-xml ( c-addr1 c-addr2 -- )
  0 s" CharacterRemarks" xml xos-write-start-tag
  3 0 DO
    swap s++ s" name" 2swap 1 
    s" Character" xml xos-write-start-tag
    swap s++      xml xos-write-text
    s" Character" xml xos-write-end-tag
  LOOP
  drop drop
  s" CharacterRemarks" xml xos-write-end-tag
;

names remarks create-xml

\ Output xml string
xml str-get type cr