CVS log for loncom/xml/run.pm

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- Bug 6925. Support complex data structures, e.g., $hash{a}{b}{c} when
  evaluating variable refs. (Existing regex was collapsing this to $hash{c})

- Suppress "Use of uninitialized value" (Config.pm line 62) warnings in logs
  from reval of perl special hash: %!, in call to &Apache::run::dump()
  when creating ScriptVars display for answer target.

- perl 5.10 and newer include a var named ^RE_TRIE_MAXBUF, where ^R is the
  control character \022. (default value is 65536).
- Hide this from vars gathered for ScriptVars display to eliminate error log
  messages of the type: "Missing operator before E_TRIE_MAXBUF?",
  logged when a Script block is parsed and the target is answer.

 - Coding style: keys(), sort()

Proper internationalization of "Code ran too long" and other runtime error messages:
- Added missing &mt() calls
- Translate only after concatenation
- Re-use same phrases
- Updated related phrases in translation files

- For perl 5.16 use of deprecated defined(@array) and defined(%hash)
  generates warnings.
  - eliminate use.

Added/modified POD comments

Past tense of "occur" is "occurred" (rr!)
Also added some missing &mt() calls and corrected some other little typos

- bug #4702

- don't try to highlight non existant lines BUG#4671

- didn't mean to include &i in that list

- Math::Complex defines the functions &theta, &rho, &pi but we don't want to call them when doing evaluates

- remove other internal vars from the script vars link

- math::complex apparently creates a var name ^WARNING_BITS where ^W is the control character \027. hiding it

- need to replace all of the \n

- stop allowing infinte loops to cause havoc, nesting alram() doesn't work so we need to fake the ability to do it.

- hide the perl inter variables like $'

- BUG#3283 was internally using $result when doing evaluates,

- also fixed the case where the script vars link failed to properly show when @var and $var and %var all had values

- turn off the reuire is run::evaluate since they are on by default now

- can't do this in a subroutine the $decls are my scoped and therefore not visibile in the subroutine, Need to move it back into the regexp, which mean enabling require opcode when doing run::evaluate might be able to get around this in a future release.

- trying to be UTF8 transparent

- BUG#2414, okay $$a should work when only $a is defined.
- commented the regexp of doom some

- BUG#2414

- BUG#2656, wrong #of sceconds displayed when timingout

- retabinate

- removing some debugs

- BUG#2239, the bad line is highlighted in red and bolded, may I should add blink?

- IS can't handle multi 1000 character hrefs.

- didn't want to commit this

- how about this instead then.

- removing debug message

- shift to using a pervar timeout
- add perlvar for scantron dir

- error messages generated by instructor scripts was being hidden

- cleaner way to kill the eval

- hard_timeout wasn't a good idea, now setting alarms and more gracefully exit

- fixes BUG#494 (Don't interpolate students reponse)

- local variable declations override the global ones, don't use $i as a local counter.BUG#471

- do timeout checking for variable evaluations too
- check if $Apache::lonxml::request is valid first (in case undef was passed in instead)

- &Apache::lonxml::xmlparse now wants a request obect passed along

- modified all known calls of xmlparse to take pass a request object

- added code to timeout a <script> block that runs more that the configured timeout parameter of seconds. (LON-CAPA defaults to 300)

- better protection of output

- should improve errormessages quite a bit.

Changes to make <script> errors print out cleaner.

- do no more than 10 rounds of substitutions before exiting.

- should only create 1 merror message to the instructor

- defined needs to use ()

GPL

- need paranthese after defined

- added dump function, returns a listing of variables from the safe space

- modified &run() to take an optional arg that hides errors in scripts.

- that line shouldn't be there

- large changes to start generating a editing enviroment
- <script> <scriptlib> <parserlib> work in edit in envrioment
- callsub needs to be reorganized
- added evaluate global to lonxml, turns off evaluation of $var

- <br> -> <br /> cleanup

- now run() returns either in list or scaler context properly.

safe chop and generalized function arguments (latter not tested)

- removed extra newline generated

- fixed Apache::run::evaluate so it actually does work
- it also now properly Quotes the expression so we shouldn't have anymore
   problems with quoting

- new Apache::run::evaluate() still has quoting problems.

These probably can be gotten around by safe->share()ing a var?

- no longer allowing variables to refereneced by ${varname}

- changed the expression delimiter to |

enged a little bit line $safeeval->reval('$_=q{ /q{  } instead of \' /

- added code to check for and report errors

- fixed bug with poorly formed xml documents

- does parameter substitution in evaluate now

- evaluate puts argument variables in, in proper scope

- evaluate now works as expected
- lonxml hands evaluates properly in start tags

- packaged it for use

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