urlbst script in bindir, Claire mail 26 Jul 2011 16:38:31

git-svn-id: svn://tug.org/texlive/trunk@23262 c570f23f-e606-0410-a88d-b1316a301751

1 files changed, 0 insertions, 804 deletions

diff --git a/Master/texmf-dist/doc/bibtex/urlbst/urlbst b/Master/texmf-dist/doc/bibtex/urlbst/urlbst
deleted file mode 100755
index 9c3516a5df1..00000000000
--- a/Master/texmf-dist/doc/bibtex/urlbst/urlbst
+++ /dev/null
@@ -1,804 +0,0 @@
-#! /usr/bin/perl -w
-#
-# Usage: ./urlbst.pl [--eprint] [--doi] [--pubmed]
-#    [--nohyperlinks] [--inlinelinks] [--hypertex] [--hyperref]
-#    [input-file [output-file]]
-# If either input-file or output-file is omitted, they are replaced by
-# stdin or stdout respectively.
-#
-# See http://purl.org/nxg/dist/urlbst for documentation
-#
-# $Id$
-
-$version = '0.7';
-($progname = $0) =~ s/.*\///;
-$mymarker = "% $progname";
-$mymarkerend = "% ...$progname to here";
-$myurl = 'http://purl.org/nxg/dist/urlbst';
-
-
-$infile = '-';
-$outfile = '-';
-
-$addeprints = 1;     # if true (nonzero) we add support for eprints
-$literals{eprintprefix} = 'arXiv:';	# make these settable with --eprint? syntax?
-$eprinturl = 'http://arxiv.org/abs/';
-
-$adddoiresolver = 1;
-$literals{doiprefix} = 'doi:';
-$doiurl = 'http://dx.doi.org/';
-
-$addpubmedresolver = 1;
-$literals{pubmedprefix} = 'PMID:';
-$pubmedurl = 'http://www.ncbi.nlm.nih.gov/pubmed/';
-
-$makehref = 0;
-$literals{urlintro} = "URL: ";
-$inlinelinks = 0;
-
-$literals{online} = "online";
-$literals{cited} = "cited ";
-$literals{linktext} = "[link]";
-
-$automatic_output_filename = 0;
-
-$Usage = "$progname [--eprint] [--doi] [--pubmed]\n    [--nohyperlinks] [--[no]inlinelinks] [--hypertex] [--hyperref]\n    [--literal key=value]\n    [--help] [input-file [output-file]]";
-
-# Magic environment variable: if this is set, then we're being called from a Platypus wrapper
-# See http://www.sveinbjorn.org/platypus
-if ($ENV{"CALLED_FROM_PLATYPUS"}) {
-    $automatic_output_filename = 1;
-}
-
-while ($#ARGV >= 0) {
-    if ($ARGV[0] eq '--eprint') {
-	$addeprints = 1;
-    } elsif ($ARGV[0] eq '--noeprint') {
-	$addeprints = 0;
-    } elsif ($ARGV[0] eq '--doi') {
-        $adddoiresolver = 1;
-    } elsif ($ARGV[0] eq '--nodoi') {
-        $adddoiresolver = 0;
-    } elsif ($ARGV[0] eq '--pubmed') {
-        $addpubmedresolver = 1;
-    } elsif ($ARGV[0] eq '--nopubmed') {
-        $addpubmedresolver = 0;
-    } elsif ($ARGV[0] eq '--nohyperlinks') {
-        $makehref = 0;
-    } elsif ($ARGV[0] eq '--hypertex') {
-	$makehref = 1;
-    } elsif ($ARGV[0] eq '--hyperref') {
-	$makehref = 2;
-    } elsif ($ARGV[0] eq '--inlinelinks') {
-        $inlinelinks = 1;
-    } elsif ($ARGV[0] eq '--noinlinelinks') {
-        $inlinelinks = 0;
-    } elsif ($ARGV[0] eq '--automatic-output') {
-        $automatic_output_filename = 1;
-    } elsif ($ARGV[0] eq '--literal') {
-        shift;
-        my $showstrings = 0;
-        if ((($k, $v) = ($ARGV[0] =~ /^(\w+)=(.*)/)) && exists $literals{$k}) {
-            $literals{$k} = $v;
-        } elsif ($ARGV[0] eq 'help') {
-            $showstrings = 1;
-        } else {
-            print "No literal found in $ARGV[0]; ignoring that\n";
-            $showstrings = 1;
-        }
-        if ($showstrings) {
-            print "    Possible literal strings (and defaults) are...\n";
-            while (($k, $v) = each (%literals)) {
-                print "        $k ($v)\n";
-            }
-            exit(0);
-        }
-    } elsif ($ARGV[0] eq '--help') {
-        print <<EOD;
-urlbst version $version
-    Usage: $Usage
-      --[no]eprint        include support for `eprint' fields
-      --[no]doi           include support for `doi' field
-      --[no]pubmed        include support for `pubmed' field
-      --nohyperlinks      do not include active links anywhere
-      --[no]inlinelinks   add hyperlinks to entry titles
-      --hypertex          include HyperTeX-style hyperlink support
-      --hyperref          include {hyperref}-style hyperlink support
-                          (generally better)
-      --literal key=value set one of the literal strings
-                          (see `--literal help' for possibilities)
-      --help              print this help
-    Input and output files may be given as `-' (default) to indicate stdin/out.
-
-EOD
-        printf("    Defaults:\n");
-        printf("      eprint refs    %s\n", ($addeprints ? "included" : "not included"));
-        printf("      DOIs           %s\n", ($adddoiresolver ? "included" : "not included"));
-        printf("      PUBMED refs    %s\n", ($addpubmedresolver ? "included" : "not included"));
-        printf("      hyperlinks     %s\n", ($makehref==0 ? "none" : $makehref==1 ? "hypertex" : "hyperref"));
-        printf("      inline links   %s\n", ($inlinelinks ? "included" : "not included"));
-        exit(0);
-    } elsif ($ARGV[0] =~ /^-/) {
-        die "Unrecognised option $ARGV[0]: Usage: $Usage\n";
-    } elsif ($infile eq '-') {
-	$infile = $ARGV[0];
-    } elsif ($outfile eq '-') {
-	$outfile = $ARGV[0];
-    } else {
-	die "Usage: $Usage\n";
-    }
-    shift(@ARGV);
-}
-
-if ($inlinelinks && $makehref == 0) {
-    print <<'EOD';
-Warning: --inlinelinks and --nohyperlinks were both specified (possibly
-    implicitly).  That combination makes no sense, so I'll ignore
-    --nohyperlinks and use --hyperref instead
-EOD
-    $makehref = 2;
-}
-
-if ($automatic_output_filename) {
-    if ($infile eq '-') {
-        print "ERROR: No input filename given with --automatic-output\n";
-    }
-    $outfile = $infile;
-    @outparts = split /\./, $outfile;
-    $ext = pop(@outparts);
-    $outfile=join('.', @outparts);
-    if ($outfile eq '') {
-        $outfile = $ext . '-url';
-    } else {
-        $outfile = $outfile . '-url.' . $ext;
-    }
-}
-
-$exitstatus = 0;		# success status
-
-open (IN, "<$infile") || die "Can't open $infile to read";
-open (OUT, ">$outfile") || die "Can't open $outfile to write";
-
-# We have to make certain assumptions about the source files, in order
-# to patch them at the correct places.  Specifically, we assume that
-#
-#   - there's a function init.state.consts
-#
-#   - ...and an output.nonnull which does the actual outputting, which
-#         has the `usual' interface.
-#
-#   - we can replace
-#           fin.entry
-#       by
-#           new.block
-#           output.url    % the function which formats and displays any URL
-#           fin.entry
-#
-#   - there is a function which handles the `article' entry type (this
-#         will always be true)
-#
-#   - there is a function output.bibitem which is called at the
-#         beginning of each entry type
-#   - ...and one called fin.entry which is called at the end
-#
-# If the functions format.date, format.title or new.block are not defined (the
-# former is not in apalike, for example, and the last is not in the
-# AMS styles), then replacements are included in the output.
-#
-# All these assumptions are true of the standard files and, since most
-# style files derive from them more or less directly, are true of most (?)
-# other style files, too.
-#
-# There's some rather ugly Perl down here.  The parsing for
-# brace-matching could probably do with being rewritten in places, to
-# make it less ugly, and more robust.
-
-print OUT "%%% Modification of BibTeX style file ", ($infile eq '-' ? '<stdin>' : $infile), "\n";
-print OUT "%%% ... by $progname, version $version (marked with \"$mymarker\")\n%%% See <$myurl>\n";
-print OUT "%%% Added webpage entry type, and url and lastchecked fields.\n";
-print OUT "%%% Added eprint support.\n"   if ($addeprints);
-print OUT "%%% Added DOI support.\n"      if ($adddoiresolver);
-print OUT "%%% Added PUBMED support.\n"   if ($addpubmedresolver);
-print OUT "%%% Added HyperTeX support.\n" if ($makehref == 1);
-print OUT "%%% Added hyperref support.\n" if ($makehref == 2);
-print OUT "%%% Original headers follow...\n\n";
-
-$found{initconsts} = 0;
-$found{outputnonnull} = 0;
-$found{article} = 0;
-$found{outputbibitem} = 0;
-$found{finentry} = 0;
-$found{formatdate} = 0;
-$found{formattitle} = 0;
-$found{newblock} = 0;
-
-while (<IN>) {
-    /^ *%/ && do {
-        # Pass commented lines unchanged
-        print OUT;
-        next;
-    };
-    
-    /^ *ENTRY/ && do {
-	# Work through the list of entry types, finding what ones are there.
-	# If we find a URL entry there already, object, since these edits
-	# will mess things up.
-	$line = $_;
-	until ($line =~ /\{\s*(\w*)/) {
-	    $line .= <IN>;
-	}
-	$bracematchtotal = 0;	# reset
-	bracematcher($line);
-	$line =~ /\{\s*(\w*)/;
-	$found{'entry'.$1} = 1;
-	print OUT $line;
-	$line = <IN>;
-	until (bracematcher($line) == 0) {
-	    # XXX deal with multiple entries on one line
-	    ($line =~ /^\s*(\w*)/) && ($found{'entry'.$1} = 1);
-	    print OUT $line;
-	    $line = <IN>;
-	}
-	if (defined($found{entryurl})) {
-	    print STDERR "$progname: style file $infile already has URL entry!\n";
-	    # print out the rest of the file, and give up
-            print OUT $line;
-	    while (<IN>) {
-		print OUT;
-	    }
-	    $exitstatus = 1;
-	    last;
-	} else {
-            print OUT "    eprint $mymarker\n    doi $mymarker\n    pubmed $mymarker\n    url $mymarker\n    lastchecked $mymarker\n";
-	}
-	print OUT $line;
-	next;
-    };
-
-    /^ *FUNCTION *\{init\.state\.consts\}/ && do {
-        # In the init.state.consts function, add an extra set of
-        # constants at the beginning.  Also use this as the marker for
-        # the place to add the init strings function.
-        print OUT <<EOD;
-$mymarker...
-% urlbst constants and state variables
-STRINGS { urlintro
-  eprinturl eprintprefix doiprefix doiurl pubmedprefix pubmedurl
-  citedstring onlinestring linktextstring
-  openinlinelink closeinlinelink }
-INTEGERS { hrefform inlinelinks makeinlinelink
-  addeprints adddoiresolver addpubmedresolver }
-FUNCTION {init.urlbst.variables}
-{
-  % The following constants may be adjusted by hand, if desired
-
-  % The first set allow you to enable or disable certain functionality.
-  #$addeprints 'addeprints :=         % 0=no eprints; 1=include eprints
-  #$adddoiresolver 'adddoiresolver :=     % 0=no DOI resolver; 1=include it
-  #$addpubmedresolver 'addpubmedresolver :=     % 0=no PUBMED resolver; 1=include it
-  #$makehref 'hrefform :=           % 0=no crossrefs; 1=hypertex xrefs; 2=hyperref refs
-  #$inlinelinks 'inlinelinks :=        % 0=URLs explicit; 1=URLs attached to titles
-
-  % String constants, which you _might_ want to tweak.
-  "$literals{urlintro}" 'urlintro := % prefix before URL; typically "Available from:" or "URL":
-  "$literals{online}" 'onlinestring := % indication that resource is online; typically "online"
-  "$literals{cited}" 'citedstring := % indicator of citation date; typically "cited "
-  "$literals{linktext}" 'linktextstring := % dummy link text; typically "[link]"
-  "$eprinturl" 'eprinturl := % prefix to make URL from eprint ref
-  "$literals{eprintprefix}" 'eprintprefix := % text prefix printed before eprint ref; typically "arXiv:"
-  "$doiurl" 'doiurl := % prefix to make URL from DOI
-  "$literals{doiprefix}" 'doiprefix :=      % text prefix printed before DOI ref; typically "doi:"
-  "$pubmedurl" 'pubmedurl := % prefix to make URL from PUBMED
-  "$literals{pubmedprefix}" 'pubmedprefix :=      % text prefix printed before PUBMED ref; typically "PMID:"
-
-  % The following are internal state variables, not configuration constants,
-  % so they shouldn't be fiddled with.
-  #0 'makeinlinelink :=     % state variable managed by possibly.setup.inlinelink
-  "" 'openinlinelink :=     % ditto
-  "" 'closeinlinelink :=    % ditto
-}
-INTEGERS { 
-  bracket.state
-  outside.brackets
-  open.brackets
-  within.brackets
-  close.brackets
-}
-$mymarkerend
-EOD
-	$line = $_;
-	until ($line =~ /\{.*\}.*\{/s) {
-	    $line .= <IN>;
-	}
-	$line =~ s/(\{.*?\}.*?\{)/$1 #0 'outside.brackets := $mymarker...
-  #1 'open.brackets :=
-  #2 'within.brackets :=
-  #3 'close.brackets := $mymarkerend
-
- /s;
-	print OUT $line;
-	$found{initconsts} = 1;
-	next;
-    };
-
-    /^ *EXECUTE *\{init\.state\.consts\}/ && do {
-        print OUT "EXECUTE {init.urlbst.variables} $mymarker\n";
-        print OUT;
-        next;
-    };
-
-    /^ *FUNCTION *\{new.block\}/ && do {
-        $found{newblock} = 1;
-    };
-
-    /^ *FUNCTION *{output\.nonnull}/ && do {
-	print OUT "$mymarker\n";
-	print OUT "FUNCTION {output.nonnull.original}\n";
-        copy_block();
-	print_output_functions();
-	$found{outputnonnull} = 1;
-	next;
-    };
-
-    /FUNCTION *\{fin.entry\}/ && do {
-        # Rename fin.entry to fin.entry.original (wrapped below)
-        s/fin.entry/fin.entry.original/;
-        s/$/ $mymarker (renamed from fin.entry, so it can be wrapped below)/;
-        $found{finentry} = 1;
-        print OUT;
-        next;
-    };
-
-    /^ *FUNCTION *{format\.date}/ && do {
-	$found{formatdate} = 1;
-	print OUT;
-	next;
-    };
-
-    /^ *FUNCTION *{format\.title}/ && do {
-        # record that we found this
-	$found{formattitle} = 1;
-        print OUT;
-	next;
-    };
-
-    /^ *format\.b?title/ && do {
-        # interpolate a call to possibly.setup.inlinelink
-        print OUT "  title empty\$ 'skip\$ 'possibly.setup\.inlinelink if\$ $mymarker\n";
-        print OUT;
-        next;
-    };
-
-    /^ *format\.vol\.num\.pages/ && do {
-        # interpolate a call to possibly.setup.inlinelink
-        s/^( *)/$1possibly.setup.inlinelink /;
-        s/$/$mymarker/;
-        print OUT;
-        next;
-    };
-
-    /^ *FUNCTION *\{article\}/ && do {
-
-	print_missing_functions();
-	print_webpage_def();
-
-	print OUT;
-	$found{article} = 1;
-	next;
-    };
-
-    /FUNCTION *\{output.bibitem\}/ && do {
-        # Rename output.bibitem to output.bibitem.original (wrapped below)
-        s/{output.bibitem\}/\{output.bibitem.original\}/;
-        s/$/ $mymarker (renamed from output.bibitem, so it can be wrapped below)/;
- 	$found{outputbibitem} = 1;
-        print OUT;
-        next;
-    };
-
-    print OUT;
-};
-
-if ($exitstatus == 0) {
-    # Skip this if we've already reported an error -- it'll only be confusing
-    foreach $k (keys %found) {
-        if ($found{$k} == 0) {
-            print STDERR "$progname: $infile: failed to find feature $k\n";
-        }
-    }
-}
-
-close (IN);
-close (OUT);
-
-exit $exitstatus;;
-
-
-
-
-
-
-sub print_output_functions {
-    print OUT "$mymarker...\n";
-
-    print OUT <<'EOD';
-% The following three functions are for handling inlinelink.  They wrap
-% a block of text which is potentially output with write$ by multiple
-% other functions, so we don't know the content a priori.
-% They communicate between each other using the variables makeinlinelink
-% (which is true if a link should be made), and closeinlinelink (which holds
-% the string which should close any current link.  They can be called
-% at any time, but start.inlinelink will be a no-op unless something has
-% previously set makeinlinelink true, and the two ...end.inlinelink functions
-% will only do their stuff if start.inlinelink has previously set
-% closeinlinelink to be non-empty.
-% (thanks to 'ijvm' for suggested code here)
-FUNCTION {uand}
-{ 'skip$ { pop$ #0 } if$ } % 'and' (which isn't defined at this point in the file)
-FUNCTION {possibly.setup.inlinelink}
-{ makeinlinelink hrefform #0 > uand
-    { doi empty$ adddoiresolver uand
-        { pubmed empty$ addpubmedresolver uand
-            { eprint empty$ addeprints uand
-                { url empty$
-                    { "" }
-                    { url }
-                  if$ }
-                { eprinturl eprint * }
-              if$ }
-            { pubmedurl pubmed * }
-          if$ }
-        { doiurl doi * }
-      if$
-      % an appropriately-formatted URL is now on the stack
-      hrefform #1 = % hypertex
-        { "\special {html:<a href=" quote$ * swap$ * quote$ * "> }{" * 'openinlinelink :=
-          "\special {html:</a>}" 'closeinlinelink := }
-        { "\href {" swap$ * "} {" * 'openinlinelink := % hrefform=#2 -- hyperref
-          % the space between "} {" matters: a URL of just the right length can cause "\% newline em"
-          "}" 'closeinlinelink := }
-      if$
-      #0 'makeinlinelink :=
-      }
-    'skip$
-  if$ % makeinlinelink
-}
-FUNCTION {add.inlinelink}
-{ openinlinelink empty$
-    'skip$
-    { openinlinelink swap$ * closeinlinelink *
-      "" 'openinlinelink :=
-      }
-  if$
-}
-EOD
-
-    # new.block is defined elsewhere
-
-    print OUT <<'EOD';
-FUNCTION {output.nonnull}
-{ % Save the thing we've been asked to output
-  's :=
-  % If the bracket-state is close.brackets, then add a close-bracket to
-  % what is currently at the top of the stack, and set bracket.state
-  % to outside.brackets
-  bracket.state close.brackets =
-    { "]" *
-      outside.brackets 'bracket.state :=
-    }
-    'skip$
-  if$
-  bracket.state outside.brackets =
-    { % We're outside all brackets -- this is the normal situation.
-      % Write out what's currently at the top of the stack, using the
-      % original output.nonnull function.
-      s
-      add.inlinelink
-      output.nonnull.original % invoke the original output.nonnull
-    }
-    { % Still in brackets.  Add open-bracket or (continuation) comma, add the
-      % new text (in s) to the top of the stack, and move to the close-brackets
-      % state, ready for next time (unless inbrackets resets it).  If we come
-      % into this branch, then output.state is carefully undisturbed.
-      bracket.state open.brackets =
-        { " [" * }
-        { ", " * } % bracket.state will be within.brackets
-      if$ 
-      s * 
-      close.brackets 'bracket.state :=
-    }
-  if$
-}
-
-% Call this function just before adding something which should be presented in 
-% brackets.  bracket.state is handled specially within output.nonnull.
-FUNCTION {inbrackets}
-{ bracket.state close.brackets =
-    { within.brackets 'bracket.state := } % reset the state: not open nor closed
-    { open.brackets 'bracket.state := }
-  if$
-}
-
-FUNCTION {format.lastchecked}
-{ lastchecked empty$
-    { "" }
-    { inbrackets citedstring lastchecked * }
-  if$
-}
-EOD
-    print OUT "$mymarkerend\n";
-}
-
-sub print_webpage_def {
-    print OUT "$mymarker...\n";
-
-    # Some of the functions below call new.block, so we need a dummy
-    # version, in the case where the style being edited doesn't supply
-    # that function.
-    if (! $found{newblock}) {
-        print OUT "FUNCTION {new.block} % dummy new.block function\n{\n  % empty\n}\n\n";
-        $found{newblock} = 1;
-    }
-
-    print OUT <<'EOD';
-% Functions for making hypertext links.
-% In all cases, the stack has (link-text href-url)
-%
-% make 'null' specials
-FUNCTION {make.href.null}
-{
-  pop$
-}
-% make hypertex specials
-FUNCTION {make.href.hypertex}
-{ 
-  "\special {html:<a href=" quote$ *
-  swap$ * quote$ * "> }" * swap$ *
-  "\special {html:</a>}" *
-}
-% make hyperref specials
-FUNCTION {make.href.hyperref}
-{ 
-  "\href {" swap$ * "} {\path{" * swap$ * "}}" *
-}
-FUNCTION {make.href}
-{ hrefform #2 =
-    'make.href.hyperref      % hrefform = 2
-    { hrefform #1 =
-        'make.href.hypertex  % hrefform = 1
-        'make.href.null      % hrefform = 0 (or anything else)
-      if$
-    }
-  if$
-}
-
-% If inlinelinks is true, then format.url should be a no-op, since it's
-% (a) redundant, and (b) could end up as a link-within-a-link.
-FUNCTION {format.url}
-{ inlinelinks #1 = url empty$ or
-   { "" }
-   { hrefform #1 =
-       { % special case -- add HyperTeX specials
-         urlintro "\url{" url * "}" * url make.href.hypertex * }
-       { urlintro "\url{" * url * "}" * }
-     if$
-   }
-  if$
-}
-
-FUNCTION {format.eprint}
-{ eprint empty$
-    { "" }
-    { eprintprefix eprint * eprinturl eprint * make.href }
-  if$
-}
-
-FUNCTION {format.doi}
-{ doi empty$
-    { "" }
-    { doiprefix doi * doiurl doi * make.href }
-  if$
-}
-
-FUNCTION {format.pubmed}
-{ pubmed empty$
-    { "" }
-    { pubmedprefix pubmed * pubmedurl pubmed * make.href }
-  if$
-}
-
-% Output a URL.  We can't use the more normal idiom (something like
-% `format.url output'), because the `inbrackets' within
-% format.lastchecked applies to everything between calls to `output',
-% so that `format.url format.lastchecked * output' ends up with both
-% the URL and the lastchecked in brackets.
-FUNCTION {output.url}
-{ url empty$
-    'skip$ 
-    { new.block 
-      format.url output
-      format.lastchecked output 
-    }
-  if$
-}
-
-FUNCTION {output.web.refs}
-{
-  new.block
-  inlinelinks
-    'skip$ % links were inline -- don't repeat them
-    {
-      output.url
-      addeprints eprint empty$ not and
-        { format.eprint output.nonnull }
-        'skip$
-      if$
-      adddoiresolver doi empty$ not and
-        { format.doi output.nonnull }
-        'skip$
-      if$
-      addpubmedresolver pubmed empty$ not and
-        { format.pubmed output.nonnull }
-        'skip$
-      if$
-    }
-  if$
-}
-
-% Wrapper for output.bibitem.original.
-% If the URL field is not empty, set makeinlinelink to be true,
-% so that an inline link will be started at the next opportunity
-FUNCTION {output.bibitem}
-{ outside.brackets 'bracket.state :=
-  output.bibitem.original
-  inlinelinks url empty$ not doi empty$ not or pubmed empty$ not or eprint empty$ not or and
-    { #1 'makeinlinelink := }
-    { #0 'makeinlinelink := }
-  if$
-}
-
-% Wrapper for fin.entry.original
-FUNCTION {fin.entry}
-{ output.web.refs  % urlbst
-  makeinlinelink       % ooops, it appears we didn't have a title for inlinelink
-    { possibly.setup.inlinelink % add some artificial link text here, as a fallback
-      linktextstring output.nonnull }
-    'skip$
-  if$
-  bracket.state close.brackets = % urlbst
-    { "]" * }
-    'skip$
-  if$
-  fin.entry.original
-}
-
-% Webpage entry type.
-% Title and url fields required;
-% author, note, year, month, and lastchecked fields optional
-% See references 
-%   ISO 690-2 http://www.nlc-bnc.ca/iso/tc46sc9/standard/690-2e.htm
-%   http://www.classroom.net/classroom/CitingNetResources.html
-%   http://neal.ctstateu.edu/history/cite.html
-%   http://www.cas.usf.edu/english/walker/mla.html
-% for citation formats for web pages.
-FUNCTION {webpage}
-{ output.bibitem
-  author empty$
-    { editor empty$
-        'skip$  % author and editor both optional
-        { format.editors output.nonnull }
-      if$
-    }
-    { editor empty$
-        { format.authors output.nonnull }
-        { "can't use both author and editor fields in " cite$ * warning$ }
-      if$
-    }
-  if$
-  new.block
-  title empty$ 'skip$ 'possibly.setup.inlinelink if$
-  format.title "title" output.check
-  inbrackets onlinestring output
-  new.block
-  year empty$
-    'skip$
-    { format.date "year" output.check }
-  if$
-  % We don't need to output the URL details ('lastchecked' and 'url'),
-  % because fin.entry does that for us, using output.web.refs.  The only
-  % reason we would want to put them here is if we were to decide that
-  % they should go in front of the rather miscellaneous information in 'note'.
-  new.block
-  note output
-  fin.entry
-}
-EOD
-
-    print OUT "$mymarkerend\n\n\n";
-}
-
-
-sub print_missing_functions {
-    # We've got to the bit of the file which handles the entry
-    # types, so write out the webpage entry handler.  This uses
-    # the format.date function, which which many but not all
-    # bst files have (for example, apalike doesn't).  So
-    # check that we either have found this function already, or
-    # add it.
-    if (! $found{formatdate}) {
-	if ($found{entrymonth}) {
-	    print OUT <<'EOD';
-FUNCTION {format.date}
-{ year empty$
-    { month empty$
-	{ "" }
-	{ "there's a month but no year in " cite$ * warning$
-	  month
-	}
-      if$
-    }
-    { month empty$
-	'year
-	{ month " " * year * }
-      if$
-    }
-  if$
-}
-EOD
-	} else {
-	    print OUT <<'EOD';
-FUNCTION {format.date}
-{ year empty$
-    'skip$
-    { %write$
-      "(" year * ")" *
-    }
-  if$
-}
-EOD
-  	}
-	$found{formatdate} = 1;
-    }
-
-    # If the style file didn't supply a format.title function, then supply
-    # one here (the {webpage} function requires it).
-    if (! $found{formattitle}) {
-	print OUT <<'EOD';
-FUNCTION {format.title}
-{ title empty$
-    { "" }
-    { title "t" change.case$ }
-  if$
-}
-EOD
-    $found{formattitle} = 1;
-    }
-}
-
-# Utility function: Keep track of open and close braces in the string argument.
-# Keep state in $bracematchtotal, return the current value.
-sub bracematcher {
-    my $s = shift;
-    $s =~ s/[^\{\}]//g;
-    #print "s=$s\n";
-    foreach my $c (split (//, $s)) {
-	$bracematchtotal += ($c eq '{' ? 1 : -1);
-    }
-    return $bracematchtotal;
-}
-
-# Utility function: use bracematcher to copy the complete block which starts
-# on or after the current line.
-sub copy_block {
-    $bracematchtotal = 0;
-    # copy any leading lines which don't have braces (presumably comments)
-    while (defined ($line = <IN>) && ($line !~ /{/)) {
-        print OUT $line;
-    }
-    while (defined ($line) && bracematcher($line) > 0) {
-        print OUT $line;
-        $line = <IN>;
-    }
-    print OUT "$line\n";	# print out terminating \} (assumed
-    				# alone on the line)
-}