loncom/html/adm/help/tex/Authoring_Scripting_Tags.tex - view

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formatted and punctuation fixed for clarity

1: \label{Authoring_Scripting_Tags} 2: 3: \begin{itemize} 4: \item \textbf{display}\index{display}: The intervening Perl script is evaluated 5: in the safe space and the return value of the script replaces the 6: entire tag. 7: \item \textbf{import}\index{import}: This causes the parse to read in the file 8: named in the body of the tag and parse it as if the entire text of 9: the file had existed at the location of the tag. 10: \item \textbf{parserlib}\index{parserlib}: The enclosed filename contains 11: definitions for new tags. 12: \item \textbf{script}\index{script}: If the attribute \textbf{type} is 13: set to {}``loncapa/perl'' the enclosed data is a Perl script which 14: is evaluated inside the Perl safe space. The return value of the script 15: is ignored. 16: \item \textbf{scriptlib}\index{scriptlib}: The enclosed filename contains 17: Perl code to run in the safe space. 18: \item \textbf{block}\index{block}: This has a required argument \textbf{condition} 19: that is evaluated. If the condition is true, everything inside the 20: tag is evaluated; otherwise, everything inside the block tag is skipped. 21: \item \textbf{notsolved}\index{notsolved}: Everything inside the tag is 22: skipped if the problem is {}``solved''. 23: \item \textbf{postanswerdate}\index{postanswerdate}: Everything inside 24: the tag is skipped if the problem is before the answer date. 25: \item \textbf{preduedate}\index{preduedate}: Everything inside the tag 26: is skipped if the problem is after the due date. 27: \item \textbf{randomlist}\index{randomlist}: The enclosed tags are parsed 28: in a stable random order. The optional attribute \textbf{show} restricts 29: the number of tags inside that are actually parsed to no more than 30: \textbf{show}. 31: \item \textbf{solved}\index{solved}: Everything inside the tag is skipped 32: if the problem is {}``not solved''. 33: \item \textbf{while}\index{while}: This implements a while loop. The required 34: attribute \textbf{condition} is a Perl scriptlet that when evaluated 35: results in a true or false value. If true, the entirety of the text 36: between the whiles is parsed. The condition is tested again, etc. 37: If false, it goes to the next tag. 38: \end{itemize}