loncom/interface/printout.pl - view

File: [LON-CAPA] / loncom / interface / printout.pl
Revision 1.169: download - view: text, annotated - select for diffs
Sat Apr 15 21:50:34 2023 UTC (12 months, 3 weeks ago) by raeburn
Branches: MAIN
CVS tags: version_2_12_X, HEAD

- Bug 5899 "printing a pdf file in a course via the printing option"
  - Use -sDEVICE=ps2write arg in call to gs for ghostscript 9.09 or newer.
  - Fix binding operator in call to check if included files contain a pdf.

1: #!/usr/bin/perl 2: # CGI-script to run LaTeX, dvips, ps2ps, ps2pdf etc. 3: # 4: # $Id: printout.pl,v 1.169 2023/04/15 21:50:34 raeburn Exp $ 5: # 6: # Copyright Michigan State University Board of Trustees 7: # 8: # This file is part of the LearningOnline Network with CAPA (LON-CAPA). 9: # 10: # LON-CAPA is free software; you can redistribute it and/or modify 11: # it under the terms of the GNU General Public License as published by 12: # the Free Software Foundation; either version 2 of the License, or 13: # (at your option) any later version. 14: # 15: # LON-CAPA is distributed in the hope that it will be useful, 16: # but WITHOUT ANY WARRANTY; without even the implied warranty of 17: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 18: # GNU General Public License for more details. 19: # 20: # You should have received a copy of the GNU General Public License 21: # along with LON-CAPA; if not, write to the Free Software 22: # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 23: # 24: # /home/httpd/html/adm/gpl.txt 25: # 26: # http://www.lon-capa.org/ 27: # 28: 29: use lib '/home/httpd/lib/perl'; 30: use LONCAPA::loncgi; 31: use File::Path; 32: use File::Basename; 33: use File::Copy; 34: use IO::File; 35: use Image::Magick; 36: use Apache::lonhtmlcommon(); 37: use Apache::lonnet; 38: use Apache::loncommon(); 39: use Apache::lonlocal; 40: use Apache::lonmsg(); 41: use LONCAPA::Enrollment; 42: use LONCAPA::Configuration; 43: use LONCAPA; 44: use Archive::Zip qw( :ERROR_CODES ); 45: 46: use strict; 47: 48: my $busy_wait_timeout = 30; 49: my $pdfs_converted = 0; # non zero if PDF includes (need to fixps). 50: 51: my $debugging = 0; 52: 53: sub debug { 54: if ($debugging) { 55: my ($text) = @_; 56: print "$text \n"; 57: } 58: } 59: 60: # Determine if a user is operating as a student for this course/domain. 61: #Parameters: 62: # none 63: #Implicit: 64: # $env{request.role} contains the role under which this user operated this 65: # this request. 66: sub is_student { 67: return ($env{'request.role'}=~/^st\./); 68: } 69: 70: # 71: # Debugging: Dump the environment for debugging. 72: # 73: sub dumpenv { 74: print " ------------------- "; 75: foreach my $key (sort (keys %env)) { 76: print " $key -> $env{$key}"; 77: } 78: print " ------------------- "; 79: } 80: 81: # 82: # This sub sends a message to the appropriate person if there was an error 83: # rendering the latex At present, there's only one case to consider: 84: # a student printing inside a course results in messages to the course coordinator. 85: #Parmaeters: 86: # identifier - The unique identifier of this cgi request. 87: # badresource- Filepath to most likely failing 88: # logfile - The contents of the log file (included in the message). 89: # texfile - reference to an array containing the LaTeX input file 90: # (included in the message). 91: #Implicit inputs: 92: # From the environment: 93: # cgi.$identifier.user - User doing the printing. 94: # cgi.$identifier.domain - Domain the user is logged in on with printing. 95: # cgi.$identifier.courseid - Id of the course (if this is a course). 96: # cgi.$identifier.coursedom- Domain in which course was constituted. 97: # cgi.$identifier.resources - List of resource URL's for which the print 98: # was attempted. 99: # 100: sub send_error_mail { 101: my ($identifier, $badresource, $logfile, $texfile) = @_; 102: my $user = $env{"cgi.$identifier.user"}; 103: my $domain = $env{"cgi.$identifier.domain"}; 104: my $courseid = $env{"cgi.$identifier.courseid"}; 105: my $coursedom= $env{"cgi.$identifier.coursedom"}; 106: my $resources= $env{"cgi.$identifier.resources"}; 107: 108: # resource file->URL 109: # 110: my $badurl = &Apache::lonnet::declutter($badresource); 111: 112: # &dumpenv(); 113: 114: 115: 116: # Only continue if there is a user, domain, courseid, course domain 117: # and resources: 118: 119: if(defined($user) && defined($domain) && defined($courseid) && 120: defined($coursedom) && defined($resources) ){ 121: 122: # Only mail if the conditions are ripe for it: 123: # The user is a student in the course: 124: # 125: 126: if (&is_student()) { 127: # build the subject and message body: 128: &debug("sending message to course coordinators."); 129: 130: # Todo: Convert badurl into a url from file path: 131: 132: my $subject = "Error [$badurl] Print failed for $user".':'.$domain; 133: my $message .= "Print failed to render LaTeX for $user".':'."$domain\n"; 134: $message .= " User was attempting to print: \n"; 135: foreach my $resource (split(/:/,$resources)) { 136: $message .= " $resource\n"; 137: } 138: $message .= "--------------------LaTeX logfile:------------ \n"; 139: $message .= $logfile; 140: $message .= "-----------------LaTeX source file: ------------\n"; 141: 142: foreach my $line (@$texfile) { 143: $message .= "$line\n"; 144: } 145: my (undef, %receivers) = &Apache::lonmsg::decide_receiver(undef, 0, 146: 1,1,1); 147: &debug("sending...section: $env{'request.course.sec'}"); 148: foreach my $dest (keys %receivers) { 149: &debug("dest is $dest"); 150: my @destinfo = split(/:/,$dest); 151: my $user = $destinfo[0]; 152: my $dom = $destinfo[1]; 153: 154: &Apache::lonmsg::user_normal_msg($user, $dom, 155: $subject, $message); 156: 157: # No point in looking at the return status as there's no good 158: # error action I can think of right now (log maybe?). 159: } 160: } 161: } 162: } 163: 164: $|=1; 165: if (! &LONCAPA::loncgi::check_cookie_and_load_env()) { 166: print <<END; 167: Content-type: text/html 168: 169: <html> 170: <head><title>Bad Cookie</title></head> 171: <body> 172: Your cookie information is incorrect. 173: </body> 174: </html> 175: END 176: exit; 177: } 178: 179: my %perlvar=%{&LONCAPA::Configuration::read_conf('loncapa.conf')}; 180: &Apache::lonlocal::get_language_handle(); 181: &Apache::loncommon::content_type(undef,'text/html'); 182: $env{'request.noversionuri'} = '/cgi-bin/printout.pl'; 183: # Breadcrumbs 184: #FIXME: Choose better/different breadcrumbs?!? Links? 185: my $brcrum = [{'href' => '', 186: 'text' => 'Helper'}, #FIXME: Different origin possible than print out helper? 187: {'href' => '', 188: 'text' => 'Preparing Printout'}, 189: {'href' => '', 190: 'text' => 'Creating PDF'}]; 191: print(&Apache::loncommon::start_page('Creating PDF', 192: undef, 193: {'bread_crumbs' => $brcrum,})); 194: 195: my $identifier = $ENV{'QUERY_STRING'}; 196: my $texfile = $env{'cgi.'.$identifier.'.file'}; 197: my $laystyle = $env{'cgi.'.$identifier.'.layout'}; 198: my $numberofcolumns = $env{'cgi.'.$identifier.'.numcol'}; 199: my $paper = $env{'cgi.'.$identifier.'.paper'}; 200: my $selectionmade = $env{'cgi.'.$identifier.'.selection'}; 201: my $tableofcontents = $env{'cgi.'.$identifier.'.tableofcontents'}; 202: my $tableofindex = $env{'cgi.'.$identifier.'.tableofindex'}; 203: my $advanced_role = $env{'cgi.'.$identifier.'.role'}; 204: my $number_of_files = $env{'cgi.'.$identifier.'.numberoffiles'}+1; 205: my $student_names = $env{'cgi.'.$identifier.'.studentnames'}; 206: my $backref = &unescape($env{'cgi.'.$identifier.'.backref'}); 207: 208: 209: my @names_pack=(); 210: if ($student_names=~/_END_/) { 211: @names_pack=split(/_ENDPERSON_/,$student_names); 212: } 213: if ($backref) { 214: if ($backref =~ m{^(/uploaded/$LONCAPA::match_domain/$LONCAPA::match_courseid/default_\d+.page)}) { 215: $backref = $1; 216: } 217: print(''.&mt("[_1]Return[_2] to resource.", 218: "<a href=\"$backref\">","</a>").''); 219: print('<a href="javascript:gopost(\'/adm/printout\',\''.$backref.'\');">'. 220: &mt("Change Printing Options").'</a>'."\n"); 221: } 222: my $figfile = $texfile; 223: $figfile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.dat/; 224: my $duefile = $texfile; 225: $duefile =~ s/^(.*_printout)_\d+_\d+_\d+\.tex/$1\.due/; 226: 227: 228: #------------------------------------------------------------------------------------- 229: # 230: # Each print may have associated with it a file that contains a set of figures 231: # that need to be converted to .eps from whatever form they were in when included 232: # in the resource. The name of the figure file is in $figfile. If it exists, 233: # it contains the names of the files that need to be converted, one per line. 234: # 235: 236: &debug("Figure file is $figfile"); 237: 238: if (-e $figfile) { 239: &debug( "Figure file exists"); 240: &debug("$figfile exists"); 241: my %done_conversion; 242: my $temporary_file=IO::File->new($figfile) || die "Couldn't open fig file $figfile for reading: $!\n"; 243: my @content_of_file = <$temporary_file>; 244: close $temporary_file; 245: my $noteps; 246: my %prog_state; 247: if ($advanced_role) { %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$#content_of_file); } 248: print(' '); 249: foreach my $not_eps (@content_of_file) { 250: chomp($not_eps); 251: &debug( "Being asked to convert $not_eps"); 252: if ($not_eps ne '') { 253: $not_eps=~s|\/\.\/|\/|g; 254: if (!$done_conversion{$not_eps}) { # Only convert multiple includes once. 255: &convert_figure($not_eps); 256: $done_conversion{$not_eps} = 1; 257: } 258: } 259: } 260: if ($advanced_role) { 261: &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); 262: } 263: unlink($figfile); 264: } 265: # End of figure conversion section: 266: # 267: #-------------------------------------------------------------------------------------------- 268: # 269: # Figure out which Tex files we need to process. If this is a large class e.g. 270: # the instructor may have asked that the printout be by section, one section per file 271: # in that case, the output tex fiels will be the base filename with 3 digit serial numbers 272: # just prior to the .tex file type. 273: # By the time this loop exits, @texfile is an array of the files to process. 274: # 275: 276: my @texfile=($texfile); 277: if ($number_of_files>1) { 278: @texfile=(); 279: for (my $i=1;$i<=$number_of_files;$i++) { 280: my $new_texfile=$texfile; 281: $new_texfile=~s/\.tex//; 282: $new_texfile = sprintf("%s_%03d.tex", $new_texfile,$i); 283: push @texfile,$new_texfile; 284: } 285: } 286: 287: #-------------------------------------------------------------------------------------------- 288: 289: my $ind=-1; 290: 291: my %prog_state; 292: if ($advanced_role) { 293: %prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$number_of_files); 294: } 295: print " "; 296: my $num_files = @texfile; # How does this differ from $number_of_files , can that be 0? 297: 298: 299: 300: 301: foreach $texfile (@texfile) { 302: my $status_statement=''; 303: my $link_text='download PDF'; 304: $ind++; 305: 306: #--------------------------------------------------------------------------------------- 307: # This chunk of code 308: # determines the status message for the printout, and the download link text. 309: # If the print is for one or more students, both will contain the range of students 310: # covered by this file. 311: # 312: 313: my @stud_info=split(/_END_/,$names_pack[$ind]); 314: my @tempo_array=split(/:/,$stud_info[0]); # username:domain:section:full name:... 315: my $name; 316: my $name_range=''; 317: 318: # $name -> Either user's full name or username:domain 319: # $name_range -> Either user's last name or username. 320: 321: if ($tempo_array[3]) { 322: $name=$tempo_array[3]; 323: $name =~ s{^\s+|\s+$}{}g; 324: if ($name =~ /,/) { 325: ($name_range) = split(/,/,$name, 2); 326: } elsif ($name =~ /\s/) { 327: $name_range = $name; 328: $name_range =~ s/\s+/_/; 329: } else { 330: $name_range = $name; 331: } 332: $name_range =~ s/[^\w\:\-]+//g; 333: } else { 334: $name=$tempo_array[0].':'.$tempo_array[1]; 335: $name_range = $tempo_array[0]; 336: } 337: 338: # If there truly is a name add it to the status text so we know which 339: # user is getting printed. 340: # 341: 342: if (($name ne "") && ($name ne ':') ) { # Could be printing codes... 343: $link_text=''.$name.''; 344: $status_statement.=$name; 345: } 346: 347: # Group of students being printed... 348: # $name_range -> first student's name - last student's name 349: # 350: 351: if ($#stud_info>0) { 352: @tempo_array=split(/:/,$stud_info[-1]); 353: if ($tempo_array[3]) { 354: $name=$tempo_array[3]; 355: $name =~ s{^\s+|\s+$}{}g; 356: my $lastname; 357: if ($name =~ /,/) { 358: ($lastname) = split(/,/, $name,2); 359: } elsif ($name =~ /\s/) { 360: $lastname = $name; 361: $lastname =~ s/\s+/_/; 362: } else { 363: $lastname = $name; 364: } 365: $name_range .= "-".$lastname; 366: $name_range =~ s/[^\w\:\-]+//g; 367: } else { 368: $name=$tempo_array[0].':'.$tempo_array[1]; 369: $name_range .= '-'.$tempo_array[0]; 370: } 371: if (($name ne "") && ($name ne ':')) { 372: $link_text.=' - '.$name.''; 373: $status_statement.=' - '.$name; 374: 375: } 376: } 377: 378: # $name_range is the range of names in this file. 379: # $name is the first of the names in this file. 380: # 381: #----------------------------------------------------------------------- 382: 383: # If the number of files is > 1, but we don't have multiple 384: # student names, we must be printing an exam from codes. 385: # The download link becomes the filename (basename.tex 386: # The status info has the basename appended to it. 387: # 388: if(($num_files > 1) && ($link_text eq 'download PDF')) { 389: $link_text = ''.basename($texfile,'.tex').'.pdf'; 390: $status_statement .= basename($texfile); 391: } 392: 393: 394: #------------------------------------------------------------------------ 395: 396: $name_range =~ s/'//g; # O'Neil -> ONeil e.g. 397: 398: 399: print " "; 400: if ($advanced_role) { 401: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt('Creating PDF for: [_1]',$status_statement)); 402: } 403: 404: if (-e $texfile) { # Ensure the tex file exists: 405: 406: #--------------------------------------------------------------------- 407: # 408: # Put username ranges into the original tex 409: # Tex filename from which they'll propagate into the other filenames as well. 410: # 411: 412: if (($name_range ne '') && ($num_files > 1)) { 413: my $newtexfile = $texfile; 414: $newtexfile =~ s/\.tex/$name_range\.tex/; 415: rename($texfile, $newtexfile); 416: $texfile = $newtexfile; 417: } 418: 419: #--------------------------------------------------------------------- 420: 421: $texfile =~ m/^(.*)\/([^\/]+)$/; 422: my $name_file = $2; 423: my $path_file = $1.'/'; 424: chdir $path_file; 425: my $dvi_file= $name_file; $dvi_file =~ s/\.tex$/\.dvi/; 426: &make_dvi_file($name_file, 427: $dvi_file, 428: $tableofcontents, 429: $tableofindex, 430: $status_statement, 431: \%prog_state, 432: $busy_wait_timeout); 433: 434: 435: #Do we have a latex error in the log file? 436: 437: 438: my $logfilename = $texfile; $logfilename =~ s/\.tex$/\.log/; 439: 440: 441: if (&analyze_logfile($logfilename, $texfile, $advanced_role)) { 442: 443: 444: #LaTeX successfully parsed tex file 445: $name_file =~ s/\.tex/\.dvi/; 446: my $new_name_file = $name_file; 447: $new_name_file =~ s/\.dvi/\.ps/; 448: # Explicitly include a switch for papertype, otherwise dvips will default 449: # to whatever is listed first in config.ps (which in most cases is a4). 450: # Historically (since 2004) LON-CAPA printing expected to use the default, 451: # i.e., a papertype of a4, when the user selected letter [8 1/2 x 11 in] 452: # in the Layout options, so I follow that convention if $papera is letter. 453: my $papera=$paper; 454: if ($papera eq 'letter') {$papera='a4';} 455: if ($papera ne '') {$papera='-t'.$papera;} 456: my $extra_ps_header = $perlvar{'lonLib'} .'/includepsheader.ps'; 457: my $comma = "dvips $papera -h $extra_ps_header -Ppdf -G0 -o $new_name_file"; 458: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null", 459: "for $status_statement now Converting to PS", 460: \%prog_state,$new_name_file); 461: # 462: # One last little hinky kinky thing. 463: # It's just possible that some fonts could not be maded 464: # at the resolution of the pdf print driver. 465: # In that case a file called missfont.log will have been 466: # created that will contain the commands that were attempted 467: # to create the missing fonts. If we basically 468: # take all the 8000 strings in that file, and 469: # replace them with 600 (the ljfour resolution) 470: # run the commands in that file and redvips, 471: # we'll be able to print the missing glyphs at 600dpi. 472: # 473: # Supposedly it is possible to tune TeX/Metafont to do this 474: # right but I failed to get that to work when following the 475: # docs at the tug site, hence this rather kludgey fix. 476: # 477: 478: my $print_directory = dirname($name_file); 479: my $missfonts_file = $print_directory."/missfont.log"; 480: #print(" Missing fonts file is: $missfonts_file"); 481: if (-e $missfonts_file) { 482: #print(" Missing fonts file exists\n"); 483: &create_missing_fonts($missfonts_file,\%prog_state); 484: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null", 485: "for $status_statement dvips generated missing fonts", 486: \%prog_state, $new_name_file); 487: } 488: if (-e $new_name_file) { 489: my $latex_file = $name_file; 490: $latex_file =~ s/\.dvi/\.tex/; 491: &repaginate($new_name_file, $latex_file, $numberofcolumns); 492: 493: &make_dvi_file($latex_file, 494: $name_file, 495: $tableofcontents, 496: $tableofindex, 497: $status_statement, 498: \%prog_state, 499: $busy_wait_timeout); 500: 501: 502: &busy_wait_command("$comma $name_file 1>/dev/null 2>/dev/null", 503: "for $status_statement dvips to repaginate", 504: \%prog_state, $new_name_file); 505: 506: print " "; 507: $new_name_file =~ m/^(.*)\./; 508: my $ps_file = my $tempo_file = $1.'temporar.ps'; 509: my $pdf_file = $1.'.pdf'; 510: $papera=~s/t/p/; 511: #---- 512: # The code below uses fixps to make pdf include in sequences work. 513: # 514: # $comma = "fixps --force $new_name_file"; 515: # &debug("FIXPS command: $comma"); 516: # &busy_wait_command("$comma 1>$tempo_file 2>/dev/null", 517: # "for $status_statement now validating PS", 518: # \%prog_state,$tempo_file); 519: 520: #--- 521: # The code below uses gs to make pdf includes in sequences work 522: 523: # Use gs to fix the postscript -> level 1.5 524: # .. if pdfs were included 525: # 526: # pswrite device was removed from ghostscript 9.09 and later, 527: # (ps2write device is used instead). 528: # check which device is available, and use as the value 529: # passed via -sDEVICE= arg in gs call to fix the postscript. 530: # 531: 532: if ($pdfs_converted > 0) { 533: my @possdevices = qw(ps2write pswrite); 534: my $device; 535: foreach my $poss (@possdevices) { 536: if (open(PIPE,"gs -h |grep ' $poss ' 2>&1 |")) { 537: my $output = <PIPE>; 538: close(PIPE); 539: chomp($output); 540: if ($output =~ /\Q $poss \E/) { 541: $device = $poss; 542: } 543: } 544: last if ($device ne ''); 545: } 546: if ($device ne '') { 547: $comma = "gs -sDEVICE=$device -dLanguageLevel=1.5 "; 548: &busy_wait_command("$comma -o $tempo_file $new_name_file 2>/dev/null 1>/dev/null", 549: "for $status_statement now validating PS", 550: \%prog_state, $tempo_file); 551: 552: #--- 553: if (-e $tempo_file) { 554: &busy_wait_command("mv $tempo_file $new_name_file", 555: 'File move', \%prog_state, $new_name_file); 556: } 557: } 558: } 559: if ($laystyle eq 'album' and $numberofcolumns eq '2') { 560: $comma = "psnup $papera -2 -s1.0 $new_name_file"; 561: &debug("PSNUP command: $comma"); 562: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null", 563: "for $status_statement now Modifying PS layout", 564: \%prog_state,$tempo_file); 565: } elsif ($laystyle eq 'book' and $numberofcolumns eq '2') { 566: $comma = 'pstops '.$papera.' "2:0+1(0.48w,0)" '.$new_name_file; 567: &debug("PSTOPS command: $comma "); 568: &busy_wait_command("$comma $tempo_file 1>/dev/null 2>/dev/null", 569: "for $status_statement now Modifying PS layout", 570: \%prog_state,$tempo_file); 571: } else { 572: $ps_file=$new_name_file; 573: } 574: my $addtoPSfile={'legal'=>'<< /PageSize [612 1008] >> setpagedevice', 575: 'tabloid'=>'<< /PageSize [792 1224] >> setpagedevice', 576: 'executive'=>,'<< /PageSize [540 720] >> setpagedevice', 577: 'a2'=>'<< /PageSize [1195.02 1690.09] >> setpagedevice', 578: 'a3'=>'<< /PageSize [842 1195.02] >> setpagedevice', 579: 'a4'=>'<< /PageSize [595.2 842] >> setpagedevice', 580: 'a5'=>'<< /PageSize [421.1 595.2] >> setpagedevice', 581: 'a6'=>'<< /PageSize [298.75 421.1] >> setpagedevice', 582: }; 583: if ($paper ne 'letter') { 584: open(FFH,'<',$ps_file) || die "Couldn't open ps file $ps_file for reading: $!\n"; 585: my $new_ps_file='new'.$ps_file; 586: open(FFHS,'>',$new_ps_file) || die "Couldn't open new ps file $new_ps_file for reading: $!\n"; 587: print FFHS $addtoPSfile->{$paper}."\n"; 588: while (<FFH>) { 589: print FFHS $_; 590: } 591: close(FFH); 592: close(FFHS); 593: $ps_file=$new_ps_file; 594: } 595: &busy_wait_command("ps2pdf13 $ps_file $pdf_file 1>/dev/null 2>/dev/null", 596: "for $status_statement now Converting PS to PDF", 597: \%prog_state,$pdf_file); 598: 599: my $texlog = $texfile; 600: my $texaux = $texfile; 601: my $texdvi = $texfile; 602: my $texps = $texfile; 603: $texlog =~ s/\.tex/\.log/; 604: $texaux =~ s/\.tex/\.aux/; 605: $texdvi =~ s/\.tex/\.dvi/; 606: $texps =~ s/\.tex/\.ps/; 607: my @garb = ($texlog,$texaux,$texdvi,$texps); 608: # unlink @garb; 609: unlink($duefile); 610: print 611: '' 612: .&mt('[_1] - [_2]Your PDF file[_3] is ready for download.', 613: $link_text,'<a href="/prtspool/'.$pdf_file.'">','</a>') 614: .''."\n"; 615: } 616: unlink($missfonts_file); 617: 618: } 619: } else { 620: print 621: '' 622: .&mt('The LaTeX file [_1] was not created successfully.', 623: ''.$texfile.'') 624: .''; 625: } 626: } 627: if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%prog_state); } 628: print " "; 629: if ($number_of_files>1) { 630: print(''.&mt('Zip Output:')."\n"); 631: my %zip_prog_state; 632: if ($advanced_role) { %zip_prog_state=&Apache::lonhtmlcommon::Create_PrgWin('',$number_of_files); } 633: my $zipfile=$texfile[0]; 634: $zipfile=~s/\.tex/\.zip/; 635: my $zip = Archive::Zip->new(); 636: my $counter = 0; 637: foreach my $file (@texfile) { 638: $file=~s/\.tex/.\pdf/; 639: my $dest=$file; 640: $dest=~s{^\Q$perlvar{'lonPrtDir'}\E}{prtspool}; 641: $zip->addFile($file,$dest); 642: $dest=~s/^prtspool//; 643: $counter ++; 644: if ($advanced_role) { 645: &Apache::lonhtmlcommon::Update_PrgWin('',\%zip_prog_state, 646: &mt('[_1] added to zip archive ([_2] of [_3]', 647: $dest,$counter,$number_of_files)); 648: } 649: } 650: if ($advanced_role) { 651: &Apache::lonhtmlcommon::Update_PrgWin('',\%zip_prog_state,&mt('Writing zip file')); 652: } 653: if ($zip->writeToFileNamed($zipfile) == AZ_OK) { 654: $zipfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool}; 655: print 656: '' 657: .&mt('A [_1]ZIP file[_2] of all the PDF files is ready for download.', 658: '<a href="'.$zipfile.'">','</a>') 659: .''; 660: } else { 661: print ''. 662: &mt('An error occurred creating a ZIP file of all the PDF files'). 663: ''; 664: } 665: if ($advanced_role) { &Apache::lonhtmlcommon::Close_PrgWin('',\%zip_prog_state); } 666: } 667: print(&Apache::loncommon::end_page()); 668: my $done; 669: 670: sub REAPER { 671: $done=1; 672: } 673: # 674: # Execute a command updating the status window as the command's 675: # output file builds up (at intervals of a second). 676: # 677: # If the timeout argument defined, then if that many seconds 678: # elapses without an increase in the size of the output file, 679: # the command will be killed (this deals with the case when 680: # latex crawls into an infinite loop). 681: # 682: sub busy_wait_command { 683: my ($command,$message,$progress_win,$output_file, $timeout)=@_; 684: 685: $SIG{CHLD} = \&REAPER; 686: $done=0; 687: my $pid=open(CMD,"$command |"); 688: if ($advanced_role) { 689: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message); 690: } 691: my $last_size = 0; 692: my $unchanged_time = 0; 693: while(!$done) { 694: sleep 1; 695: my $extra_msg; 696: if ($output_file) { 697: my $size=(stat($output_file))[7]; 698: $extra_msg=", $size bytes generated"; 699: if ($size == $last_size) { 700: $unchanged_time++; 701: if ($timeout && ($unchanged_time > $timeout)) { 702: print ''.&mt('Operation timed out!')."\n"; 703: print "Executing $command, the output file $output_file did not grow\n"; 704: print "after $timeout seconds. This may indicate $command\n"; 705: print "is in an infinite loop.\n"; 706: print "See if printing fewer copies helps. Please contact LON-CAPA\n"; 707: print "support about this in any event."; 708: print ""; 709: kill(9, $pid); # Reaper will do the rest...I hope there's errors in the log. 710: } 711: } else { 712: $last_size = $size; 713: $unchanged_time = 0; 714: } 715: } 716: if ($advanced_role) { 717: &Apache::lonhtmlcommon::Update_PrgWin('',$progress_win,$message.$extra_msg); 718: } 719: } 720: $SIG{CHLD}='IGNORE'; 721: close(CMD); 722: } 723: 724: # Make the dvi file (or rather try to), from the latex file and the 725: # various bits and pieces that control how the latex file is processed: 726: # LaTeX is run as many times a needed to make this all happen... this may 727: # result in several runs of LaTeX that just are errors if the LaTeX is 728: # bad, but the printing subsystem is _supposed_ to not do that. 729: # 730: # Parameters: 731: # name_file - Name of the LaTeX file to process. 732: # dvi_file - Name of resulting dvi file. 733: # tableofcontents - "yes" if we are supposed to make a table of contents. 734: # tableofindex - "yes" if we are suposed to make an index. 735: # status_statement - Part of the status statement for ths status window. 736: # prog_state - Reference to the program state hash. 737: # busy_wait_timeout- Seconds without any progress that imply a problem. 738: # 739: # 740: sub make_dvi_file { 741: my ($name_file, 742: $dvi_file, 743: $tableofcontents, 744: $tableofindex, 745: $status_statement, 746: $prog_state, 747: $busy_wait_timeout) = @_; 748: 749: 750: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null", 751: "for $status_statement now LaTeXing file", 752: $prog_state,$dvi_file, $busy_wait_timeout); 753: 754: # If the tableof contents was requested, we need to run 755: # LaTex a couple more times to get all the references sorted out. 756: 757: if ($tableofcontents eq 'yes') { 758: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null", 759: "for $status_statement First LaTeX of file for table of contents", 760: $prog_state,$dvi_file, $busy_wait_timeout); 761: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null", 762: "for $status_statement Second LaTeX of file for table of contents", 763: $prog_state,$dvi_file,$busy_wait_timeout); 764: } 765: 766: # And makeindex and another run of LaTeX to incorporate it if the index 767: # is enabled. 768: 769: 770: if ($tableofindex eq 'yes') { 771: my $idxname=$name_file; 772: $idxname=~s/\.tex$/\.idx/; 773: &busy_wait_command("makeindex $idxname", 774: "making index file", 775: $prog_state,$idxname); 776: &busy_wait_command("latex $name_file 1>/dev/null 2>/dev/null", 777: "for $status_statement now LaTeXing file for index section", 778: $prog_state,$dvi_file, $busy_wait_timeout); 779: } 780: 781: } 782: 783: 784: # Repagninate 785: # What we need to do: 786: # - Count the number of pages in each student. 787: # - Rewrite the latex file replacing the \specials that 788: # mark the end of student with an appropriate number of newlines. 789: # parameters: 790: # psfile - Postscript filename 791: # latexfile - LaTeX filename 792: # columns - number of columns. 793: sub repaginate { 794: 795: # We will try to do this in 2 passes through the postscript since 796: # the postscript is potentially large, to do 2 passes, the first pass 797: # must be able to calculate the total number of document pages so that 798: # at the beginning of the second pass we already know how to replace 799: # %%Pages: 800: 801: # Figure out 802: # 1. Number of pages in the document 803: # 2. Maximum number of pages in a student 804: # 3. Number of pages in each student. 805: 806: my ($postscript_filename, $latex_filename, $num_columns) = @_; 807: open(PSFILE, "<$postscript_filename"); 808: my $line; 809: my $total_pages; # Total pages in document. 810: my $seen_pages = 0; # There are several %%Pages only the first is useful 811: my @pages_in_student; # For each student his/her initial page count. 812: my $max_pages = 0; # Pages in 'longest' student. 813: my $page_number = 0; 814: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Counting pages for student: [_1]",1)); 815: 816: while ($line = <PSFILE>) { 817: 818: # Check for total pages (%%Pages:) 819: 820: if (($line =~ /^%%Pages:/) && (!$seen_pages)) { 821: my @pageinfo = split(/ /,$line); 822: $total_pages = $pageinfo[1]; 823: $seen_pages = 1; 824: } 825: # Check for %%Page: n m $page_number will be the 826: # biggest of these until we see an endofstudent. 827: # Note that minipages generate spurious %Page: 1 1's so 828: # we only are looking for the largest n (n is page number at the 829: # bottom of the page, m the page number within the document. 830: # 831: 832: if ($line =~ /^%%Page:\s+\d+\s+\d+/) { 833: my @pageinfo = split(/\s+/, $line); 834: if ($page_number < $pageinfo[1]) { 835: $page_number = $pageinfo[1]; 836: } elsif ($pageinfo[2] ne 1) { 837: # current page count reset, and it's not because of a 838: # minipage 839: # - save the page_number, reset and, if necessary 840: # update max_pages. 841: push(@pages_in_student, $page_number); 842: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Counting pages for student: [_1]", scalar(@pages_in_student))); 843: if ($page_number > $max_pages) { 844: $max_pages = $page_number; 845: } 846: $page_number = $pageinfo[1]; 847: } 848: } 849: 850: 851: } 852: # file ended so one more student 853: push(@pages_in_student, $page_number); 854: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Counting pages for student: [_1]",scalar(@pages_in_student))); 855: if ($page_number > $max_pages) { 856: $max_pages = $page_number; 857: } 858: $page_number = 0; 859: 860: close(PSFILE); 861: 862: # If 2 columns, max_pages must go to an even number of columns: 863: 864: 865: if ($num_columns == 2) { 866: if ($max_pages % 2) { 867: $max_pages++; 868: } 869: } 870: 871: # Now rewrite the LaTex file, substituting our \special 872: # with an appropriate number of \newpage directives. 873: 874: my $outfilename = $latex_filename."temp"; 875: 876: open(LATEXIN, "<$latex_filename"); 877: open(LATEXOUT, ">$outfilename"); 878: 879: 880: my $student_number = 0; # Index of student we're working on. 881: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Repaginating student: [_1]",$student_number+1)); 882: 883: while (my $line = <LATEXIN>) { 884: if ($line eq "\\special{ps:ENDOFSTUDENTSTAMP}\n") { 885: # only end of student stamp if next line is ENDOFSTUDENTSTAMP: 886: 887: 888: # End of student replace with 0 or more newpages. 889: 890: my $addlines = $max_pages - $pages_in_student[$student_number]; 891: while($addlines) { 892: print LATEXOUT '\clearpage \strut \clearpage'; 893: 894: $addlines--; 895: } 896: 897: $student_number++; 898: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt("Repaginating student: [_1]",$student_number+1)); 899: 900: } else { 901: print LATEXOUT $line; 902: } 903: } 904: 905: close(LATEXIN); 906: close(LATEXOUT); 907: rename($outfilename, $latex_filename); 908: 909: } 910: 911: # 912: # Create missing fonts given a latex missfonts.log file. 913: # This file will have lines like: 914: # 915: # mktexpk --mfmode ljfour --bdpi 8000 --mag 1+0/8000 --dpi 8000 tcrm0500 916: # 917: # We want to execute those lines with the 8000's changed to 600's 918: # in order to match the resolution of the ljfour printer. 919: # Of course if some wiseguy has changed the default printer from ljfour 920: # in the dvips's config.ps file that will break so we'll also 921: # ensure that --mfmode is ljfour. 922: # 923: sub create_missing_fonts { 924: my ($fontfile, $state) = @_; 925: 926: # Open and read in the font file..we'll read it into the array 927: # font_commands. 928: # 929: open(my $font_handle, $fontfile); 930: my @font_commands = <$font_handle>; 931: 932: # make the list contain each command only once 933: my %uniq; 934: @font_commands = map { $uniq{$_}++ == 0 ? $_ : () } @font_commands; 935: 936: # Now process each command replacing the appropriate 8000's with 937: # 600's ensuring that font names with 8000's in them are not corrupted. 938: # and if the --mfmode is not ljfour we turn it into ljfour. 939: # Then we execute the command. 940: # 941: 942: foreach my $command (@font_commands) { 943: #print(" Raw command: $command"); 944: $command =~ s/ 8000/ 600/g; # dpi directives. 945: $command =~ s/\/8000/\/600/g; # mag directives. 946: #print(" After dpi replacements: $command"); 947: 948: my @cmdarray = split(/ /,$command); 949: for (my $i =0; $i < scalar(@cmdarray); $i++) { 950: if ($cmdarray[$i] eq '--mfmode') { 951: $cmdarray[$i+1] = "ljfour"; 952: } 953: } 954: #print(" before reassembly : (@cmdarray)"); 955: $command = join(" ", (@cmdarray)); 956: 957: #print(" Creating fonts via command: $command"); 958: &busy_wait_command("$command 1>/dev/null 2>/dev/null", 959: "Creating missing font", 960: $state); 961: 962: } 963: 964: } 965: # 966: # Convert a figure file to encapsulated postscript: 967: # At present, this is using a lot of file scoped globals to pass data around. 968: # Parameters: 969: # not_eps - The name of the file to convert which, presumably, is not 970: # already an eps file. 971: # 972: sub convert_figure { 973: my ($not_eps) = @_; 974: &debug("in convert_figure"); 975: 976: my $status_statement='EPS picture for '.$not_eps; 977: my $eps_f = $not_eps; 978: 979: if ($eps_f=~/\/home\/httpd\/html\/priv\/[^\/]+\/([^\/]+)\//) { 980: $eps_f=~s/\/home\/httpd\/html\/priv\/[^\/]+\/([^\/]+)/$1/; 981: } elsif ($eps_f=~/$perlvar{'lonDocRoot'}\/res\//) { 982: $eps_f=~ s/$perlvar{'lonDocRoot'}\/res\/(.+)/$1/; 983: } elsif ($eps_f=~/$perlvar{'lonUsersDir'}\//) { 984: $eps_f=~ s/$perlvar{'lonUsersDir'}\/([^\/]+)\/\w\/\w\/\w\/(.+)/$1\/$2/; 985: } 986: 987: $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f; 988: 989: # Spaces are problematic for system commands and LaTeX, replace with _ 990: 991: $eps_f =~ s/ /\_/g; 992: 993: # 994: # If the file is already an .eps or .ps file (eps_f still has the original 995: # file type), 996: # We really just need to copy it from where it was to prtspool 997: # but with the spaces substituted to _'s. 998: # 999: my ($nsname,$path, $sext) = &fileparse($eps_f, qr/\.(ps|eps)/i); 1000: if ($sext =~/ps$/i) { 1001: &File::Path::mkpath($path,0,0777); 1002: copy("$not_eps", "$eps_f"); 1003: } else { 1004: 1005: $eps_f .= '.eps'; # Just append the eps ext. 1006: my $path= &dirname($eps_f); 1007: &File::Path::mkpath($path,0,0777); 1008: $not_eps =~ s/^\s+//; 1009: $not_eps =~ s/\s+$//; 1010: my $prettyname=$not_eps; 1011: if ($advanced_role) { 1012: $prettyname=~s|$perlvar{'lonDocRoot'}/|/|; 1013: &Apache::lonhtmlcommon::Update_PrgWin('',\%prog_state,&mt('Converting to EPS: [_1]',$prettyname)); 1014: } 1015: # 1016: # If the file is a PDF, need to use pdftops to convert it to a ps file. 1017: # otherwise use imagemagik: 1018: # 1019: if($not_eps =~/\.(pdf|PDF)$/) { 1020: 1021: # 1022: # For whatever reason, pure postscript conversions have to be 1023: # in the same dir as the base file: 1024: # 1025: $eps_f = &basename($eps_f); 1026: $eps_f = $perlvar{'lonPrtDir'}.'/'.$eps_f; 1027: 1028: &debug("Converting pdf $not_eps to postscript: $eps_f"); 1029: my @args = ('pdftops',$not_eps,$eps_f); 1030: system({$args[0]} @args); # Indirect object forces list processing mode. 1031: # See perlfunc documentation for exec(). 1032: if ($? and $advanced_role) { 1033: print '' 1034: .&mt('An error occurred during the conversion of [_1] to postscript.', 1035: ''.$prettyname.'') 1036: .''; 1037: } else { 1038: $pdfs_converted++; # Need to fix ps in last pass. 1039: } 1040: } else { 1041: my @args = ('convert',$not_eps,$eps_f); 1042: system({$args[0]} @args); # Indirect object forces list processing mode. 1043: # See perlfunc documentation for exec(). 1044: if ($? and $advanced_role) { 1045: print '' 1046: .&mt('An error occurred during the conversion of [_1].', 1047: ''.$prettyname.'') 1048: .' ' 1049: .&mt('If possible try to save this image using different settings and republish it.') 1050: .''; 1051: } 1052: } 1053: 1054: if (not -e $eps_f) { 1055: # converting an animated gif creates either: 1056: # anim.gif.eps.0 1057: # or 1058: # anim.gif-0.eps 1059: for (my $i=0;$i<10000;$i++) { 1060: if (-e $eps_f.'.'.$i) { 1061: rename($eps_f.'.'.$i, $eps_f); 1062: last; 1063: } 1064: my $anim_eps = $eps_f; 1065: $anim_eps =~ s/(\.[^.]*)\.eps$/$1-$i\.eps/i; 1066: if (-e $anim_eps) { 1067: rename($anim_eps, $eps_f); 1068: last; 1069: } 1070: } 1071: } 1072: 1073: # imagemagick 6.2.0-6.2.7 fails to properly handle 1074: # convert anim.gif anim.gif.eps 1075: # it creates anim.eps instead. 1076: if (not -e $eps_f) { 1077: my $eps_f2 = $eps_f; 1078: $eps_f2 =~ s/\.[^.]*\.eps$/\.eps/i; 1079: if(-e $eps_f2) { 1080: rename($eps_f2,$eps_f); 1081: } 1082: } 1083: } 1084: 1085: } 1086: # 1087: # Analyze a LaTeX logfile producing appropriate output on error and 1088: # returning a boolean to let the caller know if, in our opinion, it's 1089: # worth continuing on to produce the PDF file. 1090: # 1091: # Parameters: 1092: # logfilename - Name of the logfile. 1093: # texfile - Name of the LaTeX file that was being processed. 1094: # advanced_role - True if the user is privileged with respect to the printout 1095: # (e.g. is the course coordinator or some such thing). 1096: # Returns: 1097: # 1 - Caller is advised to continue to create the PDF. 1098: # 0 - Caller need not bother creating the PDF. 1099: # Side Effects: 1100: # Messages are printed to describe any errors that have been encountered. 1101: # NOTE: 1102: # The current policy is to assume that if LaTeX decided to insert some text 1103: # it has salvaged the resource and the resource can be printed.. in that case 1104: # a message is emitted from this sub. 1105: # 1106: sub analyze_logfile { 1107: my ($logfilename, $texfile, $advanced_role) = @_; 1108: 1109: my $temporary_file=IO::File->new($logfilename) || die "Couldn't open log file $logfilename for reading: $!\n"; 1110: my @content_of_file = <$temporary_file>; 1111: close $temporary_file; 1112: my $body_log_file = join(' ',@content_of_file); 1113: $logfilename =~ s/\.log$/\.html/; 1114: $temporary_file = IO::File->new('>'.$logfilename); 1115: print $temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_log_file.'</pre></body></html>'."\n"; 1116: if ($body_log_file=~m/!\s+Emergency stop/) { 1117: my $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART'; 1118: my $whereitends = rindex $body_log_file,'STAMPOFPASSEDRESOURCEEND'; 1119: my $badresource; 1120: my $badtext; 1121: if ($whereitbegins!=-1 and $whereitends!=-1) { 1122: $badtext = substr($body_log_file,$whereitbegins+26, $whereitends-$whereitbegins-26); 1123: $whereitbegins = rindex $badtext,'located in'; 1124: if ($whereitbegins != -1) { 1125: 1126: $badresource = substr($badtext, $whereitbegins+27, 1127: length($badtext) - $whereitbegins - 48); 1128: # print " failing resourcename: $badresource "; 1129: } 1130: } 1131: 1132: # Guys with privileged roles get a more detailed error output: 1133: 1134: if ($advanced_role) { 1135: #LaTeX failed to parse tex file 1136: print "<h2>".&mt('LaTeX could not successfully parse your TeX file.')."</h2>"; 1137: print &mt('It probably has errors in it.')." "; 1138: if ($badtext) { 1139: print &mt('With very high probability this error occurred in [_1].',$badtext) 1140: ." "; 1141: } 1142: print &mt('Here are the error messages in the LaTeX log file:') 1143: ." <pre>"; 1144: 1145: my $sygnal = 0; 1146: for (my $i=0;$i<=$#content_of_file;$i++) { 1147: if ($content_of_file[$i]=~m/^Runaway argument?/ or $content_of_file[$i]=~m/^!/) { 1148: $sygnal = 1; 1149: } 1150: if ($content_of_file[$i]=~m/Here is how much of/) { 1151: $sygnal = 0; 1152: } 1153: if ($sygnal) { 1154: print "$content_of_file[$i]"; 1155: } 1156: } 1157: print "</pre>\n"; 1158: # print " Advanced role "; 1159: $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool}; 1160: print "<big>" 1161: .&mt('The link to [_1]Your log file[_2]','<a href="'.$logfilename.'">','</a>') 1162: ."</big>\n"; 1163: #link to original LaTeX file 1164: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n"; 1165: my @tex_content_of_file = <$tex_temporary_file>; 1166: close $tex_temporary_file; 1167: my $body_tex_file = join(' ',@tex_content_of_file); 1168: $texfile =~ s/\.tex$/aaaaa\.html/; 1169: $tex_temporary_file = IO::File->new('>'.$texfile); 1170: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n"; 1171: print " "; 1172: $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool}; 1173: print "<big>" 1174: .&mt('The link to [_1]Your original LaTeX file[_2]','<a href="'.$texfile.'">','</a>') 1175: ."</big> \n"; 1176: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", &mt('Help on printing')); 1177: print ("$help_text"); 1178: 1179: # Students on the other hand get a minimal error message, since they won't 1180: # be able to correct the error message. A message is sent to the 1181: # instructor: 1182: 1183: } else { # Student role... 1184: # at this point: 1185: # $body_log_file - contains the log file. 1186: # $name_file - is the name of the LaTeX file. 1187: # $identifier - is the unique LaTeX identifier.l 1188: 1189: print ''; 1190: if ($badtext) { 1191: print &mt('There are errors in [_1].',$badtext); 1192: } else { 1193: print &mt('There are errors.'); 1194: } 1195: print '' 1196: .&mt('These errors prevent this resource from printing correctly.'); 1197: 1198: my $tex_handle = IO::File->new($texfile); 1199: my @tex_contents = <$tex_handle>; 1200: &send_error_mail($identifier, $badresource, $body_log_file, \@tex_contents); 1201: print "" 1202: .&mt('A message has been sent to the instructor describing this failure.') 1203: .""; 1204: my $help_text = &Apache::loncommon::help_open_topic("Print_Resource", &mt('Help on printing')); 1205: print ("$help_text"); 1206: 1207: } 1208: 1209: # Either way, an emergency stop does not allow us to continue so: 1210: 1211: return 0; 1212: 1213: # The branch of code below is taken if it appears that 1214: # there was no emergency stop but LaTeX had to correct the 1215: # input file to run. 1216: # In that case we need to provide error feedback, as the correction >may< not be 1217: # sufficient, we can let the game continue as there's a dvi file to process. 1218: 1219: } elsif ($body_log_file=~m/<inserted text>/) { 1220: my $whereitbegins = index $body_log_file,'<inserted text>'; 1221: print &mt('You are running LaTeX in [_1]batch mode[_2].','',''); 1222: while ($whereitbegins != -1) { 1223: my $tempobegin=$whereitbegins; 1224: $whereitbegins = rindex $body_log_file,'STAMPOFPASSEDRESOURCESTART',$whereitbegins; 1225: my $whereitends = index $body_log_file,'STAMPOFPASSEDRESOURCEEND',$whereitbegins; 1226: print " " 1227: .&mt('It has found an error in [_1][_2]and corrected it.',substr($body_log_file,$whereitbegins+26,$whereitends-$whereitbegins-26)," ")."\n"; 1228: print &mt('Usually this correction is valid but you probably need to check the indicated resource one more time and implement necessary corrections by yourself.')."\n"; 1229: $whereitbegins = index $body_log_file,'<inserted text>',$tempobegin+10; 1230: } 1231: 1232: if ($advanced_role) { 1233: print " "; 1234: $logfilename=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool}; 1235: print "<big>" 1236: .&mt('The link to [_1]Your log file[_2]' 1237: ,'<a href="'.$logfilename.'">','</a>') 1238: ."</big>\n"; 1239: #link to original LaTeX file 1240: my $tex_temporary_file=IO::File->new($texfile) || die "Couldn't open tex file $texfile for reading: $!\n"; 1241: my @tex_content_of_file = <$tex_temporary_file>; 1242: close $tex_temporary_file; 1243: my $body_tex_file = join(' ',@tex_content_of_file); 1244: $texfile =~ s/\.tex$/aaaaa\.html/; 1245: $tex_temporary_file = IO::File->new('>'.$texfile); 1246: print $tex_temporary_file '<html><head><title>LOGFILE</title></head><body><pre>'.$body_tex_file.'</pre></body></html>'."\n"; 1247: print " "; 1248: $texfile=~s{^\Q$perlvar{'lonPrtDir'}\E}{/prtspool}; 1249: print "<big>" 1250: .&mt('The link to [_1]Your original LaTeX file[_2]','<a href="'.$texfile.'">','</a>'); 1251: print "</big>\n"; 1252: } 1253: return 1; 1254: } 1255: return 1; # NO log file issues at all. 1256: }