Annotation of loncom/xml/lonxml.pm, revision 1.75
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
1.74 albertel 13: qw(@pwd @outputstack $redirection $import @extlinks $metamode $evaluate %insertlist);
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:
63: sub xmlbegin {
64: my $output='';
65: if ($ENV{'browser.mathml'}) {
66: $output='<?xml version="1.0"?>'
67: .'<?xml-stylesheet type="text/css" href="/adm/MathML/mathml.css"?>'
68: .'<!DOCTYPE html SYSTEM "/adm/MathML/mathml.dtd" '
69: .'[<!ENTITY mathns "http://www.w3.org/1998/Math/MathML">]>'
70: .'<html xmlns:math="http://www.w3.org/1998/Math/MathML" '
71: .'xmlns="http://www.w3.org/TR/REC-html40">';
72: } else {
73: $output='<html>';
74: }
75: return $output;
76: }
77:
78: sub xmlend {
79: return '</html>';
80: }
81:
1.70 www 82: sub fontsettings() {
83: my $headerstring='';
84: if (($ENV{'browser.os'} eq 'mac') && (!$ENV{'browser.mathml'})) {
85: $headerstring.=
86: '<meta Content-Type="text/html; charset=x-mac-roman">';
87: }
88: return $headerstring;
89: }
90:
1.68 www 91: sub registerurl {
92: return (<<ENDSCRIPT);
93: <script language="JavaScript">
1.71 www 94: // BEGIN LON-CAPA Internal
1.69 www 95: function LONCAPAreg() {
96: if (window.location.pathname!="/res/adm/pages/menu.html") {
97: menu=window.open("","LONCAPAmenu");
98: menu.currentURL=window.location.pathname;
99: menu.currentStale=0;
100: }
101: }
102:
103: function LONCAPAstale() {
104: if (window.location.pathname!="/res/adm/pages/menu.html") {
105: menu=window.open("","LONCAPAmenu");
106: menu.currentStale=1;
107: }
1.68 www 108: }
1.71 www 109: // END LON-CAPA Internal
1.68 www 110: </script>
111: ENDSCRIPT
1.69 www 112: }
113:
114: sub loadevents() {
115: return 'LONCAPAreg();';
116: }
117:
118: sub unloadevents() {
119: return 'LONCAPAstale();';
1.68 www 120: }
121:
1.48 albertel 122: sub printalltags {
123: my $temp;
124: foreach $temp (sort keys %Apache::lonxml::alltags) {
1.64 albertel 125: &Apache::lonxml::debug("$temp -- $Apache::lonxml::alltags{$temp}");
1.48 albertel 126: }
127: }
1.31 sakharuk 128:
1.3 sakharuk 129: sub xmlparse {
130:
1.18 albertel 131: my ($target,$content_file_string,$safeinit,%style_for_target) = @_;
1.41 albertel 132: if ($target eq 'meta') {
1.59 albertel 133: $Apache::lonxml::redirection = 0;
134: $Apache::lonxml::metamode = 1;
1.72 albertel 135: $Apache::lonxml::evaluate = 1;
1.55 albertel 136: $Apache::lonxml::import = 0;
1.47 albertel 137: } elsif ($target eq 'grade') {
1.55 albertel 138: &startredirection;
1.59 albertel 139: $Apache::lonxml::metamode = 0;
1.72 albertel 140: $Apache::lonxml::evaluate = 1;
1.55 albertel 141: $Apache::lonxml::import = 1;
1.72 albertel 142: } elsif ($target eq 'modified') {
143: $Apache::lonxml::redirection = 0;
144: $Apache::lonxml::metamode = 0;
145: $Apache::lonxml::evaluate = 0;
146: $Apache::lonxml::import = 0;
1.44 albertel 147: } else {
1.72 albertel 148: $Apache::lonxml::redirection = 0;
1.59 albertel 149: $Apache::lonxml::metamode = 0;
1.72 albertel 150: $Apache::lonxml::evaluate = 1;
1.55 albertel 151: $Apache::lonxml::import = 1;
1.32 sakharuk 152: }
1.48 albertel 153: #&printalltags();
1.16 albertel 154: my @pars = ();
1.23 albertel 155: @Apache::lonxml::pwd=();
156: my $pwd=$ENV{'request.filename'};
157: $pwd =~ s:/[^/]*$::;
158: &newparser(\@pars,\$content_file_string,$pwd);
1.3 sakharuk 159: my $currentstring = '';
160: my $finaloutput = '';
161: my $newarg = '';
1.16 albertel 162: my $result;
1.24 sakharuk 163:
1.3 sakharuk 164: my $safeeval = new Safe;
1.40 albertel 165: my $safehole = new Safe::Hole;
1.6 albertel 166: $safeeval->permit("entereval");
1.13 albertel 167: $safeeval->permit(":base_math");
1.19 albertel 168: $safeeval->deny(":base_io");
1.40 albertel 169: $safehole->wrap(\&Apache::lonnet::EXT,$safeeval,'&EXT');
1.19 albertel 170: #need to inspect this class of ops
171: # $safeeval->deny(":base_orig");
1.21 albertel 172: $safeinit .= ';$external::target='.$target.';';
1.26 albertel 173: $safeinit .= ';$external::randomseed='.&Apache::lonnet::rndseed().';';
1.21 albertel 174: &Apache::run::run($safeinit,$safeeval);
1.3 sakharuk 175: #-------------------- Redefinition of the target in the case of compound target
176:
177: ($target, my @tenta) = split('&&',$target);
178:
179: my @stack = ();
180: my @parstack = ();
1.17 albertel 181: &initdepth;
1.3 sakharuk 182: my $token;
1.16 albertel 183: while ( $#pars > -1 ) {
184: while ($token = $pars[$#pars]->get_token) {
1.57 albertel 185: if (($token->[0] eq 'T') || ($token->[0] eq 'C') || ($token->[0] eq 'D') ) {
1.61 albertel 186: if ($metamode<1) { $result=$token->[1]; }
1.57 albertel 187: } elsif ($token->[0] eq 'PI') {
1.61 albertel 188: if ($metamode<1) { $result=$token->[2]; }
1.16 albertel 189: } elsif ($token->[0] eq 'S') {
190: # add tag to stack
191: push (@stack,$token->[1]);
192: # add parameters list to another stack
193: push (@parstack,&parstring($token));
1.19 albertel 194: &increasedepth($token);
1.16 albertel 195: if (exists $style_for_target{$token->[1]}) {
1.61 albertel 196: if ($Apache::lonxml::redirection) {
1.55 albertel 197: $Apache::lonxml::outputstack['-1'] .=
198: &recurse($style_for_target{$token->[1]},$target,$safeeval,
199: \%style_for_target,@parstack);
1.41 albertel 200: } else {
1.55 albertel 201: $finaloutput .= &recurse($style_for_target{$token->[1]},$target,
202: $safeeval,\%style_for_target,@parstack);
1.41 albertel 203: }
1.16 albertel 204: } else {
1.17 albertel 205: $result = &callsub("start_$token->[1]", $target, $token,\@parstack,
1.41 albertel 206: \@pars, $safeeval, \%style_for_target);
1.16 albertel 207: }
208: } elsif ($token->[0] eq 'E') {
209: #clear out any tags that didn't end
1.55 albertel 210: while ($token->[1] ne $stack[$#stack] && ($#stack > -1)) {
211: &Apache::lonxml::warning("Unbalanced tags in resource $stack['-1']");
1.43 albertel 212: pop @stack;pop @parstack;&decreasedepth($token);
213: }
1.16 albertel 214:
215: if (exists $style_for_target{'/'."$token->[1]"}) {
1.61 albertel 216: if ($Apache::lonxml::redirection) {
1.55 albertel 217: $Apache::lonxml::outputstack['-1'] .=
218: &recurse($style_for_target{'/'."$token->[1]"},
219: $target,$safeeval,\%style_for_target,@parstack);
220: } else {
221: $finaloutput .= &recurse($style_for_target{'/'."$token->[1]"},
222: $target,$safeeval,\%style_for_target,
223: @parstack);
224: }
1.59 albertel 225:
1.16 albertel 226: } else {
1.17 albertel 227: $result = &callsub("end_$token->[1]", $target, $token, \@parstack,
1.55 albertel 228: \@pars,$safeeval, \%style_for_target);
1.13 albertel 229: }
1.57 albertel 230: } else {
231: &Apache::lonxml::error("Unknown token event :$token->[0]:$token->[1]:");
1.16 albertel 232: }
1.55 albertel 233: #evaluate variable refs in result
1.25 sakharuk 234: if ($result ne "") {
1.24 sakharuk 235: if ( $#parstack > -1 ) {
1.55 albertel 236: if ($Apache::lonxml::redirection) {
237: $Apache::lonxml::outputstack['-1'] .=
238: &Apache::run::evaluate($result,$safeeval,$parstack[$#parstack]);
239: } else {
240: $finaloutput .= &Apache::run::evaluate($result,$safeeval,
241: $parstack[$#parstack]);
242: }
1.16 albertel 243: } else {
244: $finaloutput .= &Apache::run::evaluate($result,$safeeval,'');
1.13 albertel 245: }
1.16 albertel 246: $result = '';
1.55 albertel 247: }
248: if ($token->[0] eq 'E') {
249: pop @stack;pop @parstack;&decreasedepth($token);
1.2 sakharuk 250: }
1.5 albertel 251: }
1.16 albertel 252: pop @pars;
1.23 albertel 253: pop @Apache::lonxml::pwd;
1.3 sakharuk 254: }
1.24 sakharuk 255:
1.59 albertel 256: # if ($target eq 'meta') {
257: # $finaloutput.=&endredirection;
258: # }
1.67 www 259:
260: if (($ENV{'QUERY_STRING'}) && ($target eq 'web')) {
261: $finaloutput=&afterburn($finaloutput);
262: }
263:
1.3 sakharuk 264: return $finaloutput;
1.15 albertel 265: }
266:
1.67 www 267:
1.15 albertel 268: sub recurse {
269:
270: my @innerstack = ();
271: my @innerparstack = ();
272: my ($newarg,$target,$safeeval,$style_for_target,@parstack) = @_;
1.16 albertel 273: my @pat = ();
1.23 albertel 274: &newparser(\@pat,\$newarg);
1.15 albertel 275: my $tokenpat;
276: my $partstring = '';
277: my $output='';
1.16 albertel 278: my $decls='';
279: while ( $#pat > -1 ) {
280: while ($tokenpat = $pat[$#pat]->get_token) {
1.57 albertel 281: if (($tokenpat->[0] eq 'T') || ($tokenpat->[0] eq 'C') || ($tokenpat->[0] eq 'D') ) {
1.61 albertel 282: if ($metamode<1) { $partstring=$tokenpat->[1]; }
1.57 albertel 283: } elsif ($tokenpat->[0] eq 'PI') {
1.61 albertel 284: if ($metamode<1) { $partstring=$tokenpat->[2]; }
1.16 albertel 285: } elsif ($tokenpat->[0] eq 'S') {
286: push (@innerstack,$tokenpat->[1]);
287: push (@innerparstack,&parstring($tokenpat));
1.19 albertel 288: &increasedepth($tokenpat);
1.16 albertel 289: $partstring = &callsub("start_$tokenpat->[1]",
290: $target, $tokenpat, \@innerparstack,
291: \@pat, $safeeval, $style_for_target);
292: } elsif ($tokenpat->[0] eq 'E') {
293: #clear out any tags that didn't end
294: while ($tokenpat->[1] ne $innerstack[$#innerstack]
1.43 albertel 295: && ($#innerstack > -1)) {
1.49 albertel 296: &Apache::lonxml::warning("Unbalanced tags in resource $innerstack['-1']");
1.43 albertel 297: pop @innerstack;pop @innerparstack;&decreasedepth($tokenpat);
298: }
1.16 albertel 299: $partstring = &callsub("end_$tokenpat->[1]",
300: $target, $tokenpat, \@innerparstack,
301: \@pat, $safeeval, $style_for_target);
1.57 albertel 302: } else {
303: &Apache::lonxml::error("Unknown token event :$tokenpat->[0]:$tokenpat->[1]:");
1.16 albertel 304: }
305: #pass both the variable to the style tag, and the tag we
306: #are processing inside the <definedtag>
307: if ( $partstring ne "" ) {
308: if ( $#parstack > -1 ) {
309: if ( $#innerparstack > -1 ) {
310: $decls= $parstack[$#parstack].$innerparstack[$#innerparstack];
311: } else {
312: $decls= $parstack[$#parstack];
313: }
314: } else {
315: if ( $#innerparstack > -1 ) {
316: $decls=$innerparstack[$#innerparstack];
317: } else {
318: $decls='';
319: }
320: }
321: $output .= &Apache::run::evaluate($partstring,$safeeval,$decls);
322: $partstring = '';
323: }
1.17 albertel 324: if ($tokenpat->[0] eq 'E') { pop @innerstack;pop @innerparstack;
1.19 albertel 325: &decreasedepth($tokenpat);}
1.15 albertel 326: }
1.16 albertel 327: pop @pat;
1.23 albertel 328: pop @Apache::lonxml::pwd;
1.15 albertel 329: }
330: return $output;
1.7 albertel 331: }
332:
333: sub callsub {
1.14 albertel 334: my ($sub,$target,$token,$parstack,$parser,$safeeval,$style)=@_;
1.7 albertel 335: my $currentstring='';
1.72 albertel 336: my $nodefault;
1.7 albertel 337: {
1.59 albertel 338: my $sub1;
1.7 albertel 339: no strict 'refs';
1.59 albertel 340: if ($target eq 'edit' && $token->[0] eq 'S') {
341: $currentstring = &Apache::edit::tag_start($target,$token,$parstack,$parser,
342: $safeeval,$style);
343: }
1.68 www 344: my $tag=$token->[1];
345: my $space=$Apache::lonxml::alltags{$tag};
346: if (!$space) {
347: $tag=~tr/A-Z/a-z/;
348: $sub=~tr/A-Z/a-z/;
349: $space=$Apache::lonxml::alltags{$tag}
350: }
351: if ($space) {
1.72 albertel 352: #&Apache::lonxml::debug("Calling sub $sub in $space $metamode<br />\n");
1.24 sakharuk 353: $sub1="$space\:\:$sub";
1.17 albertel 354: $Apache::lonxml::curdepth=join('_',@Apache::lonxml::depthcounter);
1.72 albertel 355: ($currentstring,$nodefault) = &$sub1($target,$token,$parstack,$parser,
356: $safeeval,$style);
1.7 albertel 357: } else {
1.72 albertel 358: #&Apache::lonxml::debug("NOT Calling sub $sub in $space $metamode<br />\n");
1.62 sakharuk 359: if ($metamode <1) {
360: if (defined($token->[4]) && ($metamode < 1)) {
1.72 albertel 361: $currentstring = $token->[4];
1.62 sakharuk 362: } else {
1.72 albertel 363: $currentstring = $token->[2];
1.62 sakharuk 364: }
1.7 albertel 365: }
1.59 albertel 366: }
1.72 albertel 367: &Apache::lonxml::debug("nodefalt:$nodefault:");
368: if ($currentstring eq '' && $nodefault eq '') {
369: if ($target eq 'edit') {
1.74 albertel 370: &Apache::lonxml::debug("doing default edit for $token->[1]");
1.72 albertel 371: if ($token->[0] eq 'S') {
1.74 albertel 372: $currentstring = &Apache::edit::tag_start($target,$token);
1.72 albertel 373: } elsif ($token->[0] eq 'E') {
1.74 albertel 374: $currentstring = &Apache::edit::tag_end($target,$token);
1.72 albertel 375: }
376: } elsif ($target eq 'modified') {
377: if ($token->[0] eq 'S') {
378: $currentstring = $token->[4];
379: } else {
380: $currentstring = $token->[2];
381: }
382: }
1.7 albertel 383: }
384: use strict 'refs';
385: }
386: return $currentstring;
1.17 albertel 387: }
388:
1.55 albertel 389: sub startredirection {
390: $Apache::lonxml::redirection++;
391: push (@Apache::lonxml::outputstack, '');
392: }
393:
394: sub endredirection {
395: if (!$Apache::lonxml::redirection) {
1.72 albertel 396: &Apache::lonxml::error("Endredirection was called, before a startredirection, perhaps you have unbalanced tags. Some debuging information:".join ":",caller);
1.55 albertel 397: return '';
398: }
399: $Apache::lonxml::redirection--;
400: pop @Apache::lonxml::outputstack;
401: }
402:
1.17 albertel 403: sub initdepth {
404: @Apache::lonxml::depthcounter=();
405: $Apache::lonxml::depth=-1;
406: $Apache::lonxml::olddepth=-1;
407: }
408:
409: sub increasedepth {
1.19 albertel 410: my ($token) = @_;
1.17 albertel 411: $Apache::lonxml::depth++;
412: $Apache::lonxml::depthcounter[$Apache::lonxml::depth]++;
413: if ($Apache::lonxml::depthcounter[$Apache::lonxml::depth]==1) {
414: $Apache::lonxml::olddepth=$Apache::lonxml::depth;
415: }
1.42 albertel 416: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 417: &Apache::lonxml::debug("s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n");
1.54 albertel 418: #print "<br />s $Apache::lonxml::depth : $Apache::lonxml::olddepth : $curdepth : $token->[1]\n";
1.17 albertel 419: }
420:
421: sub decreasedepth {
1.19 albertel 422: my ($token) = @_;
1.17 albertel 423: $Apache::lonxml::depth--;
1.36 albertel 424: if ($Apache::lonxml::depth<$Apache::lonxml::olddepth-1) {
425: $#Apache::lonxml::depthcounter--;
426: $Apache::lonxml::olddepth=$Apache::lonxml::depth+1;
427: }
1.43 albertel 428: if ( $Apache::lonxml::depth < -1) {
1.49 albertel 429: &Apache::lonxml::warning("Unbalanced tags in resource");
1.43 albertel 430: $Apache::lonxml::depth='-1';
431: }
1.42 albertel 432: my $curdepth=join('_',@Apache::lonxml::depthcounter);
1.64 albertel 433: &Apache::lonxml::debug("e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n");
1.54 albertel 434: #print "<br />e $Apache::lonxml::depth : $Apache::lonxml::olddepth : $token->[1] : $curdepth\n";
1.1 sakharuk 435: }
1.19 albertel 436:
437: sub get_all_text {
438:
439: my($tag,$pars)= @_;
440: my $depth=0;
441: my $token;
442: my $result='';
1.57 albertel 443: if ( $tag =~ m:^/: ) {
444: my $tag=substr($tag,1);
445: # &Apache::lonxml::debug("have:$tag:");
446: while (($depth >=0) && ($token = $pars->get_token)) {
447: # &Apache::lonxml::debug("e token:$token->[0]:$depth:$token->[1]");
448: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
449: $result.=$token->[1];
450: } elsif ($token->[0] eq 'PI') {
451: $result.=$token->[2];
452: } elsif ($token->[0] eq 'S') {
453: if ($token->[1] eq $tag) { $depth++; }
454: $result.=$token->[4];
455: } elsif ($token->[0] eq 'E') {
456: if ( $token->[1] eq $tag) { $depth--; }
457: #skip sending back the last end tag
458: if ($depth > -1) { $result.=$token->[2]; } else {
459: $pars->unget_token($token);
460: }
461: }
462: }
463: } else {
464: while ($token = $pars->get_token) {
465: # &Apache::lonxml::debug("s token:$token->[0]:$depth:$token->[1]");
466: if (($token->[0] eq 'T')||($token->[0] eq 'C')||($token->[0] eq 'D')) {
467: $result.=$token->[1];
468: } elsif ($token->[0] eq 'PI') {
469: $result.=$token->[2];
470: } elsif ($token->[0] eq 'S') {
471: if ( $token->[1] eq $tag) {
472: $pars->unget_token($token); last;
473: } else {
474: $result.=$token->[4];
475: }
476: } elsif ($token->[0] eq 'E') {
477: $result.=$token->[2];
1.36 albertel 478: }
1.19 albertel 479: }
480: }
1.49 albertel 481: # &Apache::lonxml::debug("Exit:$result:");
1.19 albertel 482: return $result
483: }
484:
1.23 albertel 485: sub newparser {
486: my ($parser,$contentref,$dir) = @_;
487: push (@$parser,HTML::TokeParser->new($contentref));
1.56 albertel 488: $$parser['-1']->xml_mode('1');
1.23 albertel 489: if ( $dir eq '' ) {
490: push (@Apache::lonxml::pwd, $Apache::lonxml::pwd[$#Apache::lonxml::pwd]);
491: } else {
492: push (@Apache::lonxml::pwd, $dir);
493: }
494: # &Apache::lonxml::debug("pwd:$#Apache::lonxml::pwd");
495: # &Apache::lonxml::debug("pwd:$Apache::lonxml::pwd[$#Apache::lonxml::pwd]");
496: }
1.1 sakharuk 497:
1.8 albertel 498: sub parstring {
499: my ($token) = @_;
500: my $temp='';
1.20 albertel 501: map {
1.35 www 502: unless ($_=~/\W/) {
1.42 albertel 503: my $val=$token->[2]->{$_};
1.53 albertel 504: $val =~ s/([\%\@\\])/\\$1/g;
1.51 albertel 505: #if ($val =~ m/^[\%\@]/) { $val="\\".$val; }
1.42 albertel 506: $temp .= "my \$$_=\"$val\";"
1.20 albertel 507: }
508: } @{$token->[3]};
1.8 albertel 509: return $temp;
510: }
1.22 albertel 511:
1.34 www 512: sub writeallows {
513: my $thisurl='/res/'.&Apache::lonnet::declutter(shift);
514: my $thisdir=$thisurl;
515: $thisdir=~s/\/[^\/]+$//;
516: my %httpref=();
517: map {
518: $httpref{'httpref.'.
519: &Apache::lonnet::hreflocation($thisdir,$_)}=$thisurl; } @extlinks;
520: &Apache::lonnet::appenv(%httpref);
521: }
522:
1.66 www 523: #
524: # Afterburner handles anchors, highlights and links
525: #
526: sub afterburn {
527: my $result=shift;
528: map {
529: my ($name, $value) = split(/=/,$_);
530: $value =~ tr/+/ /;
531: $value =~ s/%([a-fA-F0-9][a-fA-F0-9])/pack("C",hex($1))/eg;
532: if (($name eq 'highlight')||($name eq 'anchor')||($name eq 'link')) {
533: unless ($ENV{'form.'.$name}) {
534: $ENV{'form.'.$name}=$value;
535: }
536: }
537: } (split(/&/,$ENV{'QUERY_STRING'}));
538: if ($ENV{'form.highlight'}) {
539: map {
540: my $anchorname=$_;
541: my $matchthis=$anchorname;
542: $matchthis=~s/\_+/\\s\+/g;
543: $result=~s/($matchthis)/\<font color=\"red\"\>$1\<\/font\>/gs;
544: } split(/\,/,$ENV{'form.highlight'});
545: }
546: if ($ENV{'form.link'}) {
547: map {
548: my ($anchorname,$linkurl)=split(/\>/,$_);
549: my $matchthis=$anchorname;
550: $matchthis=~s/\_+/\\s\+/g;
551: $result=~s/($matchthis)/\<a href=\"$linkurl\"\>$1\<\/a\>/gs;
552: } split(/\,/,$ENV{'form.link'});
553: }
554: if ($ENV{'form.anchor'}) {
555: my $anchorname=$ENV{'form.anchor'};
556: my $matchthis=$anchorname;
557: $matchthis=~s/\_+/\\s\+/g;
558: $result=~s/($matchthis)/\<a name=\"$anchorname\"\>$1\<\/a\>/s;
559: $result.=(<<"ENDSCRIPT");
560: <script>
561: document.location.hash='$anchorname';
562: </script>
563: ENDSCRIPT
564: }
565: return $result;
566: }
567:
1.24 sakharuk 568: sub handler {
569: my $request=shift;
1.68 www 570:
1.64 albertel 571: my $target='web';
1.68 www 572:
1.65 albertel 573: $Apache::lonxml::debug=0;
1.68 www 574:
1.25 sakharuk 575: if ($ENV{'browser.mathml'}) {
1.27 albertel 576: $request->content_type('text/xml');
577: } else {
578: $request->content_type('text/html');
1.25 sakharuk 579: }
1.64 albertel 580:
1.29 sakharuk 581: # $request->print(<<ENDHEADER);
582: #<html>
583: #<head>
584: #<title>Just test</title>
585: #</head>
586: #<body bgcolor="#FFFFFF">
587: #ENDHEADER
588: # &Apache::lonhomework::send_header($request);
1.27 albertel 589: $request->send_http_header;
1.64 albertel 590:
1.45 www 591: return OK if $request->header_only;
1.27 albertel 592:
593:
1.50 albertel 594: my $file=&Apache::lonnet::filelocation("",$request->uri);
1.24 sakharuk 595: my %mystyle;
1.50 albertel 596: my $result = '';
597: my $filecontents=&Apache::lonnet::getfile($file);
598: if ($filecontents == -1) {
599: &Apache::lonxml::error("<b> Unable to find <i>$file</i></b>");
600: $filecontents='';
601: } else {
602: $result = &Apache::lonxml::xmlparse($target,$filecontents,'',%mystyle);
1.66 www 603: }
1.50 albertel 604:
1.67 www 605: $request->print($result);
1.64 albertel 606:
1.34 www 607: writeallows($request->uri);
1.45 www 608: return OK;
1.24 sakharuk 609: }
610:
1.22 albertel 611: sub debug {
612: if ($Apache::lonxml::debug eq 1) {
1.54 albertel 613: print "DEBUG:".$_[0]."<br />\n";
1.22 albertel 614: }
615: }
1.49 albertel 616:
1.22 albertel 617: sub error {
1.74 albertel 618: if (($Apache::lonxml::debug eq 1) || ($ENV{'request.state'} eq 'construct') ) {
1.55 albertel 619: print "<b>ERROR:</b>".$_[0]."<br />\n";
1.52 albertel 620: } else {
621: print "<b>An Error occured while processing this resource. The instructor has been notified.</b> <br />";
622: #notify author
623: &Apache::lonmsg::author_res_msg($ENV{'request.filename'},$_[0]);
624: #notify course
625: if ( $ENV{'request.course.id'} ) {
626: my $users=$ENV{'course.'.$ENV{'request.course.id'}.'.comment.email'};
627: foreach my $user (split /\,/, $users) {
628: ($user,my $domain) = split /:/, $user;
1.54 albertel 629: &Apache::lonmsg::user_normal_msg($user,$domain,"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 630: }
631: }
1.74 albertel 632:
1.52 albertel 633: #FIXME probably shouldn't have me get everything forever.
1.54 albertel 634: &Apache::lonmsg::user_normal_msg('albertel','msu',"Error in $ENV{'request.filename'}",$_[0]);
1.74 albertel 635: #&Apache::lonmsg::user_normal_msg('albertel','103',"Error in $ENV{'request.filename'}",$_[0]);
1.52 albertel 636: }
1.22 albertel 637: }
1.49 albertel 638:
1.22 albertel 639: sub warning {
1.73 harris41 640: if ($ENV{'request.state'} eq 'construct') {
1.55 albertel 641: print "<b>W</b>ARNING<b>:</b>".$_[0]."<br />\n";
1.73 harris41 642: }
1.22 albertel 643: }
644:
1.75 ! albertel 645: #Should allow multiple definitions of the same tag name
! 646: sub register_insert2 {
! 647: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
! 648: my $i;
! 649: my @order;
! 650: for ($i=0;$i < $#data; $i++) {
! 651: my $line = $data[$i];
! 652: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
! 653: if ( $line =~ /TABLE/ ) { last; }
! 654: my ($tag,$descrip,$function,$show) = split(/,/, $line);
! 655: if ($show eq 'no') { next; }
! 656: $insertlist{"$i.tag"} = $tag;
! 657: $insertlist{"$i.description"} = $descrip;
! 658: $insertlist{"$i.function"} = $function;
! 659: }
! 660: for (;$i < $#data;$i++) {
! 661: my $line = $data[$i];
! 662: my ($tag,@which) = split(/ +/,$line);
! 663: for (my $j=0;$j <$#which;$j++) {
! 664: if ( $which[$j] eq 'Y' ) {
! 665: push(@{ $insertlist{"$tag.which"} },$j);
! 666: }
! 667: }
! 668: }
! 669: }
! 670:
1.74 albertel 671: sub register_insert {
1.75 ! albertel 672: my @data = split /\n/, &Apache::lonnet::getfile('/home/httpd/lonTabs/insertlist.tab');
1.74 albertel 673: my $i;
674: my @order;
675: for ($i=0;$i < $#data; $i++) {
676: my $line = $data[$i];
677: if ( $line =~ /^\#/ || $line =~ /^\s*\n/) { next; }
678: if ( $line =~ /TABLE/ ) { last; }
679: my ($tag,$descrip,$function,$show) = split(/,/, $line);
680: if ($show eq 'no') { next; }
681: $insertlist{"$tag.description"} = $descrip;
682: $insertlist{"$tag.function"} = $function;
683: push (@order,$tag);
684: }
685: for (;$i < $#data;$i++) {
686: my $line = $data[$i];
687: my ($tag,@which) = split(/ +/,$line);
688: for (my $j=0;$j <$#which;$j++) {
689: if ( $which[$j] eq 'Y' ) {
690: push(@{ $insertlist{"$tag.which"} },$order[$j]);
691: }
692: }
693: }
694: }
1.1 sakharuk 695: 1;
696: __END__
1.68 www 697:
698:
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