Annotation of loncom/xml/lonxml.pm, revision 1.77
1.2 sakharuk 1: # The LearningOnline Network with CAPA
1.3 sakharuk 2: # XML Parser Module
1.2 sakharuk 3: #
1.3 sakharuk 4: # last modified 06/26/00 by Alexander Sakharuk
1.33 www 5: # 11/6 Gerd Kortemeyer
1.45 www 6: # 6/1/1 Gerd Kortemeyer
1.56 albertel 7: # 2/21,3/13 Guy
1.68 www 8: # 3/29,5/4 Gerd Kortemeyer
1.73 harris41 9: # 5/10 Scott Harrison
1.2 sakharuk 10:
1.4 albertel 11: package Apache::lonxml;
1.33 www 12: use vars
1.76 albertel 13: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist @namespace);
1.1 sakharuk 14: use strict;
15: use HTML::TokeParser;
1.3 sakharuk 16: use Safe;
1.40 albertel 17: use Safe::Hole;
1.13 albertel 18: use Opcode;
1.72 albertel 19:
20: sub register {
21: my $space;
22: my @taglist;
23: my $temptag;
24: ($space,@taglist) = @_;
25: foreach $temptag (@taglist) {
26: $Apache::lonxml::alltags{$temptag}=$space;
27: }
28: }
29:
1.46 www 30: use Apache::Constants qw(:common);
1.71 www 31: use Apache::lontexconvert;
1.72 albertel 32: use Apache::style;
33: use Apache::run;
34: use Apache::londefdef;
35: use Apache::scripttag;
36: use Apache::edit;
37: #================================================== Main subroutine: xmlparse
38: #debugging control, to turn on debugging modify the correct handler
39: $Apache::lonxml::debug=0;
40:
41: #path to the directory containing the file currently being processed
42: @pwd=();
43:
44: #these two are used for capturing a subset of the output for later processing,
45: #don't touch them directly use &startredirection and &endredirection
46: @outputstack = ();
47: $redirection = 0;
48:
49: #controls wheter the <import> tag actually does
50: $import = 1;
51: @extlinks=();
52:
53: # meta mode is a bit weird only some output is to be turned off
54: #<output> tag turns metamode off (defined in londefdef.pm)
55: $metamode = 0;
56:
57: # turns on and of run::evaluate actually derefencing var refs
58: $evaluate = 1;
1.7 albertel 59:
1.74 albertel 60: # data structure for eidt mode, determines what tags can go into what other tags
61: %insertlist=();
1.68 www 62:
1.76 albertel 63: #stores the list of active tag namespaces
64: @namespace=();
65:
1.68 www 66: sub xmlbegin {
67: my $output='';
68: if ($ENV{'browser.mathml'}) {
69: $output='<?xml version="1.0"?>'
70: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
71: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
72: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
73: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
74: .'xmlns="http://www.w3.org/TR/REC-html40">';
75: } else {
76: $output='<html>';
77: }
78: return $output;
79: }
80:
81: sub xmlend {
82: return '</html>';
83: }
84:
1.70 www 85: sub fontsettings() {
86: my $headerstring='';
87: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
88: $headerstring.=
89: '<meta Content-Type="text/html; charset=x-mac-roman">';
90: }
91: return $headerstring;
92: }
93:
1.68 www 94: sub registerurl {
95: return (<<ENDSCRIPT);
96: <script language="JavaScript">
1.71 www 97: // BEGIN LON-CAPA Internal
1.69 www 98: function LONCAPAreg() {
99: if (window.location.pathname!="/res/adm/pages/menu.html") {
100: menu=window.open("","LONCAPAmenu");
101: menu.currentURL=window.location.pathname;
102: menu.currentStale=0;
103: }
104: }
105:
106: function LONCAPAstale() {
107: if (window.location.pathname!="/res/adm/pages/menu.html") {
108: menu=window.open("","LONCAPAmenu");
109: menu.currentStale=1;
110: }
1.68 www 111: }
1.71 www 112: // END LON-CAPA Internal
1.68 www 113: </script>
114: ENDSCRIPT
1.69 www 115: }
116:
117: sub loadevents() {
118: return 'LONCAPAreg();';
119: }
120:
121: sub unloadevents() {
122: return 'LONCAPAstale();';
1.68 www 123: }
124:
1.48 albertel 125: sub printalltags {
126: my $temp;
127: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.64 albertel 128: &Apache::lonxml::debug("$temp -- $Apache::lonxml::alltags{$temp}");
1.48 albertel 129: }
130: }
1.31 sakharuk 131:
1.3 sakharuk 132: sub xmlparse {
133:
1.18 albertel 134: my ($target,$content_file_string,$safeinit,%style_for_target) = @_;
1.41 albertel 135: if ($target eq 'meta') {
1.59 albertel 136: $Apache::lonxml::redirection = 0;
137: $Apache::lonxml::metamode = 1;
1.72 albertel 138: $Apache::lonxml::evaluate = 1;
1.55 albertel 139: $Apache::lonxml::import = 0;
1.47 albertel 140: } elsif ($target eq 'grade') {
1.55 albertel 141: &startredirection;
1.59 albertel 142: $Apache::lonxml::metamode = 0;
1.72 albertel 143: $Apache::lonxml::evaluate = 1;
1.55 albertel 144: $Apache::lonxml::import = 1;
1.72 albertel 145: } elsif ($target eq 'modified') {
146: $Apache::lonxml::redirection = 0;
147: $Apache::lonxml::metamode = 0;
148: $Apache::lonxml::evaluate = 0;
149: $Apache::lonxml::import = 0;
1.44 albertel 150: } else {
1.72 albertel 151: $Apache::lonxml::redirection = 0;
1.59 albertel 152: $Apache::lonxml::metamode = 0;
1.72 albertel 153: $Apache::lonxml::evaluate = 1;
1.55 albertel 154: $Apache::lonxml::import = 1;
1.32 sakharuk 155: }
1.48 albertel 156: #&printalltags();
1.16 albertel 157: my @pars = ();
1.23 albertel 158: @Apache::lonxml::pwd=();
159: my $pwd=$ENV{'request.filename'};
160: $pwd =~ s:/[^/]*$::;
161: &newparser(\@pars,\$content_file_string,$pwd);
1.3 sakharuk 162: my $currentstring = '';
163: my $finaloutput = '';
164: my $newarg = '';
1.16 albertel 165: my $result;
1.24 sakharuk 166:
1.3 sakharuk 167: my $safeeval = new Safe;
1.40 albertel 168: my $safehole = new Safe::Hole;
1.6 albertel 169: $safeeval->permit("entereval");
1.13 albertel 170: $safeeval->permit(":base_math");
1.77 ! www 171: $safeeval->permit("sort");
1.19 albertel 172: $safeeval->deny(":base_io");
1.40 albertel 173: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.19 albertel 174: #need to inspect this class of ops
175: # $safeeval->deny(":base_orig");
1.21 albertel 176: $safeinit .= ';$external::target='.$target.';';
1.26 albertel 177: $safeinit .= ';$external::randomseed='.&Apache::lonnet::rndseed().';';
1.21 albertel 178: &Apache::run::run($safeinit,$safeeval);
1.3 sakharuk 179: #-------------------- Redefinition of the target in the case of compound target
180:
181: ($target, my @tenta) = split('&&',$target);
182:
183: my @stack = ();
184: my @parstack = ();
1.17 albertel 185: &initdepth;
1.3 sakharuk 186: my $token;
1.16 albertel 187: while ( $#pars > -1 ) {
188: while ($token = $pars[$#pars]->get_token) {
1.57 albertel 189: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.61 albertel 190: if ($metamode<1) { $result=$token->[1]; }
1.57 albertel 191: } elsif ($token->[0] eq 'PI') {
1.61 albertel 192: if ($metamode<1) { $result=$token->[2]; }
1.16 albertel 193: } elsif ($token->[0] eq 'S') {
194: # add tag to stack
195: push (@stack,$token->[1]);
196: # add parameters list to another stack
197: push (@parstack,&parstring($token));
1.19 albertel 198: &increasedepth($token);
1.16 albertel 199: if (exists $style_for_target{$token->[1]}) {
1.61 albertel 200: if ($Apache::lonxml::redirection) {
1.55 albertel 201: $Apache::lonxml::outputstack['-1'] .=
202: &recurse($style_for_target{$token->[1]},$target,$safeeval,
203: \%style_for_target,@parstack);
1.41 albertel 204: } else {
1.55 albertel 205: $finaloutput .= &recurse($style_for_target{$token->[1]},$target,
206: $safeeval,\%style_for_target,@parstack);
1.41 albertel 207: }
1.16 albertel 208: } else {
1.17 albertel 209: $result = &callsub("start_$token->[1]", $target, $token,\@parstack,
1.41 albertel 210: \@pars, $safeeval, \%style_for_target);
1.16 albertel 211: }
212: } elsif ($token->[0] eq 'E') {
213: #clear out any tags that didn't end
1.55 albertel 214: while ($token->[1] ne $stack[$#stack] && ($#stack > -1)) {
215: &Apache::lonxml::warning("Unbalanced tags in resource $stack['-1']");
1.43 albertel 216: pop @stack;pop @parstack;&decreasedepth($token);
217: }
1.16 albertel 218:
219: if (exists $style_for_target{'/'."$token->[1]"}) {
1.61 albertel 220: if ($Apache::lonxml::redirection) {
1.55 albertel 221: $Apache::lonxml::outputstack['-1'] .=
222: &recurse($style_for_target{'/'."$token->[1]"},
223: $target,$safeeval,\%style_for_target,@parstack);
224: } else {
225: $finaloutput .= &recurse($style_for_target{'/'."$token->[1]"},
226: $target,$safeeval,\%style_for_target,
227: @parstack);
228: }
1.59 albertel 229:
1.16 albertel 230: } else {
1.17 albertel 231: $result = &callsub("end_$token->[1]", $target, $token, \@parstack,
1.55 albertel 232: \@pars,$safeeval, \%style_for_target);
1.13 albertel 233: }
1.57 albertel 234: } else {
235: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
1.16 albertel 236: }
1.55 albertel 237: #evaluate variable refs in result
1.25 sakharuk 238: if ($result ne "") {
1.24 sakharuk 239: if ( $#parstack > -1 ) {
1.55 albertel 240: if ($Apache::lonxml::redirection) {
241: $Apache::lonxml::outputstack['-1'] .=
242: &Apache::run::evaluate($result,$safeeval,$parstack[$#parstack]);
243: } else {
244: $finaloutput .= &Apache::run::evaluate($result,$safeeval,
245: $parstack[$#parstack]);
246: }
1.16 albertel 247: } else {
248: $finaloutput .= &Apache::run::evaluate($result,$safeeval,'');
1.13 albertel 249: }
1.16 albertel 250: $result = '';
1.55 albertel 251: }
252: if ($token->[0] eq 'E') {
253: pop @stack;pop @parstack;&decreasedepth($token);
1.2 sakharuk 254: }
1.5 albertel 255: }
1.16 albertel 256: pop @pars;
1.23 albertel 257: pop @Apache::lonxml::pwd;
1.3 sakharuk 258: }
1.24 sakharuk 259:
1.59 albertel 260: # if ($target eq 'meta') {
261: # $finaloutput.=&endredirection;
262: # }
1.67 www 263:
264: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
265: $finaloutput=&afterburn($finaloutput);
266: }
267:
1.3 sakharuk 268: return $finaloutput;
1.15 albertel 269: }
270:
1.67 www 271:
1.15 albertel 272: sub recurse {
273:
274: my @innerstack = ();
275: my @innerparstack = ();
276: my ($newarg,$target,$safeeval,$style_for_target,@parstack) = @_;
1.16 albertel 277: my @pat = ();
1.23 albertel 278: &newparser(\@pat,\$newarg);
1.15 albertel 279: my $tokenpat;
280: my $partstring = '';
281: my $output='';
1.16 albertel 282: my $decls='';
283: while ( $#pat > -1 ) {
284: while ($tokenpat = $pat[$#pat]->get_token) {
1.57 albertel 285: if (($tokenpat->[0] eq 'T') || ($tokenpat->[0] eq 'C') || ($tokenpat->[0] eq 'D') ) {
1.61 albertel 286: if ($metamode<1) { $partstring=$tokenpat->[1]; }
1.57 albertel 287: } elsif ($tokenpat->[0] eq 'PI') {
1.61 albertel 288: if ($metamode<1) { $partstring=$tokenpat->[2]; }
1.16 albertel 289: } elsif ($tokenpat->[0] eq 'S') {
290: push (@innerstack,$tokenpat->[1]);
291: push (@innerparstack,&parstring($tokenpat));
1.19 albertel 292: &increasedepth($tokenpat);
1.16 albertel 293: $partstring = &callsub("start_$tokenpat->[1]",
294: $target, $tokenpat, \@innerparstack,
295: \@pat, $safeeval, $style_for_target);
296: } elsif ($tokenpat->[0] eq 'E') {
297: #clear out any tags that didn't end
298: while ($tokenpat->[1] ne $innerstack[$#innerstack]
1.43 albertel 299: && ($#innerstack > -1)) {
1.49 albertel 300: &Apache::lonxml::warning("Unbalanced tags in resource $innerstack['-1']");
1.43 albertel 301: pop @innerstack;pop @innerparstack;&decreasedepth($tokenpat);
302: }
1.16 albertel 303: $partstring = &callsub("end_$tokenpat->[1]",
304: $target, $tokenpat, \@innerparstack,
305: \@pat, $safeeval, $style_for_target);
1.57 albertel 306: } else {
307: &Apache::lonxml::error("Unknown token event :$tokenpat->[0]:$tokenpat->[1]:");
1.16 albertel 308: }
309: #pass both the variable to the style tag, and the tag we
310: #are processing inside the <definedtag>
311: if ( $partstring ne "" ) {
312: if ( $#parstack > -1 ) {
313: if ( $#innerparstack > -1 ) {
314: $decls= $parstack[$#parstack].$innerparstack[$#innerparstack];
315: } else {
316: $decls= $parstack[$#parstack];
317: }
318: } else {
319: if ( $#innerparstack > -1 ) {
320: $decls=$innerparstack[$#innerparstack];
321: } else {
322: $decls='';
323: }
324: }
325: $output .= &Apache::run::evaluate($partstring,$safeeval,$decls);
326: $partstring = '';
327: }
1.17 albertel 328: if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack;
1.19 albertel 329: &decreasedepth($tokenpat);}
1.15 albertel 330: }
1.16 albertel 331: pop @pat;
1.23 albertel 332: pop @Apache::lonxml::pwd;
1.15 albertel 333: }
334: return $output;
1.7 albertel 335: }
336:
337: sub callsub {
1.14 albertel 338: my ($sub,$target,$token,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 339: my $currentstring='';
1.72 albertel 340: my $nodefault;
1.7 albertel 341: {
1.59 albertel 342: my $sub1;
1.7 albertel 343: no strict 'refs';
1.59 albertel 344: if ($target eq 'edit' && $token->[0] eq 'S') {
345: $currentstring = &Apache::edit::tag_start($target,$token,$parstack,$parser,
346: $safeeval,$style);
347: }
1.68 www 348: my $tag=$token->[1];
349: my $space=$Apache::lonxml::alltags{$tag};
350: if (!$space) {
351: $tag=~tr/A-Z/a-z/;
352: $sub=~tr/A-Z/a-z/;
353: $space=$Apache::lonxml::alltags{$tag}
354: }
355: if ($space) {
1.72 albertel 356: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode<br />\n");
1.24 sakharuk 357: $sub1="$space\:\:$sub";
1.17 albertel 358: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1.72 albertel 359: ($currentstring,$nodefault) = &$sub1($target,$token,$parstack,$parser,
360: $safeeval,$style);
1.7 albertel 361: } else {
1.72 albertel 362: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode<br />\n");
1.62 sakharuk 363: if ($metamode <1) {
364: if (defined($token->[4]) && ($metamode < 1)) {
1.72 albertel 365: $currentstring = $token->[4];
1.62 sakharuk 366: } else {
1.72 albertel 367: $currentstring = $token->[2];
1.62 sakharuk 368: }
1.7 albertel 369: }
1.59 albertel 370: }
1.72 albertel 371: &Apache::lonxml::debug("nodefalt:$nodefault:");
372: if ($currentstring eq '' && $nodefault eq '') {
373: if ($target eq 'edit') {
1.74 albertel 374: &Apache::lonxml::debug("doing default edit for $token->[1]");
1.72 albertel 375: if ($token->[0] eq 'S') {
1.74 albertel 376: $currentstring = &Apache::edit::tag_start($target,$token);
1.72 albertel 377: } elsif ($token->[0] eq 'E') {
1.74 albertel 378: $currentstring = &Apache::edit::tag_end($target,$token);
1.72 albertel 379: }
380: } elsif ($target eq 'modified') {
381: if ($token->[0] eq 'S') {
382: $currentstring = $token->[4];
1.76 albertel 383: $currentstring.=&Apache::edit::handle_insert();
1.72 albertel 384: } else {
385: $currentstring = $token->[2];
386: }
387: }
1.7 albertel 388: }
389: use strict 'refs';
390: }
391: return $currentstring;
1.17 albertel 392: }
393:
1.55 albertel 394: sub startredirection {
395: $Apache::lonxml::redirection++;
396: push (@Apache::lonxml::outputstack, '');
397: }
398:
399: sub endredirection {
400: if (!$Apache::lonxml::redirection) {
1.72 albertel 401: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 402: return '';
403: }
404: $Apache::lonxml::redirection--;
405: pop @Apache::lonxml::outputstack;
406: }
407:
1.17 albertel 408: sub initdepth {
409: @Apache::lonxml::depthcounter=();
410: $Apache::lonxml::depth=-1;
411: $Apache::lonxml::olddepth=-1;
412: }
413:
414: sub increasedepth {
1.19 albertel 415: my ($token) = @_;
1.17 albertel 416: $Apache::lonxml::depth++;
417: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
418: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
419: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
420: }
1.42 albertel 421: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 422: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 423: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 424: }
425:
426: sub decreasedepth {
1.19 albertel 427: my ($token) = @_;
1.17 albertel 428: $Apache::lonxml::depth--;
1.36 albertel 429: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
430: $#Apache::lonxml::depthcounter--;
431: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
432: }
1.43 albertel 433: if ( $Apache::lonxml::depth < -1) {
1.49 albertel 434: &Apache::lonxml::warning("Unbalanced tags in resource");
1.43 albertel 435: $Apache::lonxml::depth='-1';
436: }
1.42 albertel 437: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 438: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 439: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 440: }
1.19 albertel 441:
442: sub get_all_text {
443:
444: my($tag,$pars)= @_;
445: my $depth=0;
446: my $token;
447: my $result='';
1.57 albertel 448: if ( $tag =~ m:^/: ) {
449: my $tag=substr($tag,1);
450: # &Apache::lonxml::debug("have:$tag:");
451: while (($depth >=0) && ($token = $pars->get_token)) {
452: # &Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]");
453: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
454: $result.=$token->[1];
455: } elsif ($token->[0] eq 'PI') {
456: $result.=$token->[2];
457: } elsif ($token->[0] eq 'S') {
458: if ($token->[1] eq $tag) { $depth++; }
459: $result.=$token->[4];
460: } elsif ($token->[0] eq 'E') {
461: if ( $token->[1] eq $tag) { $depth--; }
462: #skip sending back the last end tag
463: if ($depth > -1) { $result.=$token->[2]; } else {
464: $pars->unget_token($token);
465: }
466: }
467: }
468: } else {
469: while ($token = $pars->get_token) {
470: # &Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
471: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
472: $result.=$token->[1];
473: } elsif ($token->[0] eq 'PI') {
474: $result.=$token->[2];
475: } elsif ($token->[0] eq 'S') {
476: if ( $token->[1] eq $tag) {
477: $pars->unget_token($token); last;
478: } else {
479: $result.=$token->[4];
480: }
481: } elsif ($token->[0] eq 'E') {
482: $result.=$token->[2];
1.36 albertel 483: }
1.19 albertel 484: }
485: }
1.49 albertel 486: # &Apache::lonxml::debug("Exit:$result:");
1.19 albertel 487: return $result
488: }
489:
1.23 albertel 490: sub newparser {
491: my ($parser,$contentref,$dir) = @_;
492: push (@$parser,HTML::TokeParser->new($contentref));
1.56 albertel 493: $$parser['-1']->xml_mode('1');
1.23 albertel 494: if ( $dir eq '' ) {
495: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
496: } else {
497: push (@Apache::lonxml::pwd, $dir);
498: }
499: # &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd");
500: # &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]");
501: }
1.1 sakharuk 502:
1.8 albertel 503: sub parstring {
504: my ($token) = @_;
505: my $temp='';
1.20 albertel 506: map {
1.35 www 507: unless ($_=~/\W/) {
1.42 albertel 508: my $val=$token->[2]->{$_};
1.53 albertel 509: $val =~ s/([\%\@\\])/\\$1/g;
1.51 albertel 510: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.42 albertel 511: $temp .= "my \$$_=\"$val\";"
1.20 albertel 512: }
513: } @{$token->[3]};
1.8 albertel 514: return $temp;
515: }
1.22 albertel 516:
1.34 www 517: sub writeallows {
518: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
519: my $thisdir=$thisurl;
520: $thisdir=~s/\/[^\/]+$//;
521: my %httpref=();
522: map {
523: $httpref{'httpref.'.
524: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl; } @extlinks;
525: &Apache::lonnet::appenv(%httpref);
526: }
527:
1.66 www 528: #
529: # Afterburner handles anchors, highlights and links
530: #
531: sub afterburn {
532: my $result=shift;
533: map {
534: my ($name, $value) = split(/=/,$_);
535: $value =~ tr/+/ /;
536: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
537: if (($name eq 'highlight')||($name eq 'anchor')||($name eq 'link')) {
538: unless ($ENV{'form.'.$name}) {
539: $ENV{'form.'.$name}=$value;
540: }
541: }
542: } (split(/&/,$ENV{'QUERY_STRING'}));
543: if ($ENV{'form.highlight'}) {
544: map {
545: my $anchorname=$_;
546: my $matchthis=$anchorname;
547: $matchthis=~s/\_+/\\s\+/g;
548: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
549: } split(/\,/,$ENV{'form.highlight'});
550: }
551: if ($ENV{'form.link'}) {
552: map {
553: my ($anchorname,$linkurl)=split(/\>/,$_);
554: my $matchthis=$anchorname;
555: $matchthis=~s/\_+/\\s\+/g;
556: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
557: } split(/\,/,$ENV{'form.link'});
558: }
559: if ($ENV{'form.anchor'}) {
560: my $anchorname=$ENV{'form.anchor'};
561: my $matchthis=$anchorname;
562: $matchthis=~s/\_+/\\s\+/g;
563: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
564: $result.=(<<"ENDSCRIPT");
565: <script>
566: document.location.hash='$anchorname';
567: </script>
568: ENDSCRIPT
569: }
570: return $result;
571: }
572:
1.24 sakharuk 573: sub handler {
574: my $request=shift;
1.68 www 575:
1.64 albertel 576: my $target='web';
1.68 www 577:
1.65 albertel 578: $Apache::lonxml::debug=0;
1.68 www 579:
1.25 sakharuk 580: if ($ENV{'browser.mathml'}) {
1.27 albertel 581: $request->content_type('text/xml');
582: } else {
583: $request->content_type('text/html');
1.25 sakharuk 584: }
1.64 albertel 585:
1.29 sakharuk 586: # $request->print(<<ENDHEADER);
587: #<html>
588: #<head>
589: #<title>Just test</title>
590: #</head>
591: #<body bgcolor="#FFFFFF">
592: #ENDHEADER
593: # &Apache::lonhomework::send_header($request);
1.27 albertel 594: $request->send_http_header;
1.64 albertel 595:
1.45 www 596: return OK if $request->header_only;
1.27 albertel 597:
598:
1.50 albertel 599: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.24 sakharuk 600: my %mystyle;
1.50 albertel 601: my $result = '';
602: my $filecontents=&Apache::lonnet::getfile($file);
603: if ($filecontents == -1) {
604: &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
605: $filecontents='';
606: } else {
607: $result = &Apache::lonxml::xmlparse($target,$filecontents,'',%mystyle);
1.66 www 608: }
1.50 albertel 609:
1.67 www 610: $request->print($result);
1.64 albertel 611:
1.34 www 612: writeallows($request->uri);
1.45 www 613: return OK;
1.24 sakharuk 614: }
615:
1.22 albertel 616: sub debug {
617: if ($Apache::lonxml::debug eq 1) {
1.54 albertel 618: print "DEBUG:".$_[0]."<br />\n";
1.22 albertel 619: }
620: }
1.49 albertel 621:
1.22 albertel 622: sub error {
1.74 albertel 623: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.55 albertel 624: print "<b>ERROR:</b>".$_[0]."<br />\n";
1.52 albertel 625: } else {
626: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
627: #notify author
628: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},$_[0]);
629: #notify course
630: if ( $ENV{'request.course.id'} ) {
631: my $users=$ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'};
632: foreach my $user (split /\,/, $users) {
633: ($user,my $domain) = split /:/, $user;
1.54 albertel 634: &Apache::lonmsg::user_normal_msg($user,$domain,"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 635: }
636: }
1.74 albertel 637:
1.52 albertel 638: #FIXME probably shouldn't have me get everything forever.
1.54 albertel 639: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",$_[0]);
1.74 albertel 640: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 641: }
1.22 albertel 642: }
1.49 albertel 643:
1.22 albertel 644: sub warning {
1.73 harris41 645: if ($ENV{'request.state'} eq 'construct') {
1.55 albertel 646: print "<b>W</b>ARNING<b>:</b>".$_[0]."<br />\n";
1.73 harris41 647: }
1.22 albertel 648: }
649:
1.74 albertel 650: sub register_insert {
1.75 albertel 651: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 652: my $i;
1.76 albertel 653: my $tagnum=0;
1.74 albertel 654: my @order;
655: for ($i=0;$i < $#data; $i++) {
656: my $line = $data[$i];
657: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
658: if ( $line =~ /TABLE/ ) { last; }
659: my ($tag,$descrip,$function,$show) = split(/,/, $line);
1.76 albertel 660: $insertlist{"$tagnum.tag"} = $tag;
661: $insertlist{"$tagnum.description"} = $descrip;
662: $insertlist{"$tagnum.function"} = $function;
663: $insertlist{"$tagnum.show"}= $show;
664: $tagnum++;
1.74 albertel 665: }
1.76 albertel 666: $i++; #skipping TABLE line
667: $tagnum = 0;
1.74 albertel 668: for (;$i < $#data;$i++) {
669: my $line = $data[$i];
1.76 albertel 670: my ($mnemonic,@which) = split(/ +/,$line);
671: my $tag = $insertlist{"$tagnum.tag"};
1.74 albertel 672: for (my $j=0;$j <$#which;$j++) {
673: if ( $which[$j] eq 'Y' ) {
1.76 albertel 674: if ($insertlist{"$j.show"} ne 'no') {
675: push(@{ $insertlist{"$tag.which"} },$j);
676: }
1.74 albertel 677: }
678: }
1.76 albertel 679: $tagnum++;
1.74 albertel 680: }
681: }
1.1 sakharuk 682: 1;
683: __END__
1.68 www 684:
685:
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