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authorNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
committerNorbert Preining <norbert@preining.info>2019-09-02 13:46:59 +0900
commite0c6872cf40896c7be36b11dcc744620f10adf1d (patch)
tree60335e10d2f4354b0674ec22d7b53f0f8abee672 /macros/latex/contrib/tugboat/tugboat.bst
Initial commit
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+%%% $Id: tugboat.bst 210 2018-10-29 18:04:16Z karl $
+%%% TUGboat changes are public domain.
+%%%
+%%% Modified for TUGboat from abbrvurl.bst:
+%%% abbreviate "page(s)" to "p(p).",
+%%% "volume" to "vol.",
+%%% "editor(s)" to "ed(s)".
+%%% urlintro=""
+%%% reduce long author lists in format.names per Mico.
+%%% new fields for editors:
+%%% "newpage" - force page break after entry
+%%% "urlnewline" - force line break before url value.
+%%% --karl, originally created 24jul18.
+%%%
+%%% Modification of BibTeX style file /usr/local/texlive/2009/texmf-dist/bibtex/bst/base/abbrv.bst
+%%% ... by urlbst, version 0.7 (marked with "% urlbst")
+%%% See <http://purl.org/nxg/dist/urlbst>
+%%% Added webpage entry type, and url and lastchecked fields.
+%%% Added eprint support.
+%%% Added DOI support.
+%%% Added PUBMED support.
+%%% Added hyperref support.
+%%% Original headers follow...
+
+% BibTeX standard bibliography style `abbrv'
+ % version 0.99a for BibTeX versions 0.99a or later, LaTeX version 2.09.
+ % Copyright (C) 1985, all rights reserved.
+ % Copying of this file is authorized only if either
+ % (1) you make absolutely no changes to your copy, including name, or
+ % (2) if you do make changes, you name it something other than
+ % btxbst.doc, plain.bst, unsrt.bst, alpha.bst, and abbrv.bst.
+ % This restriction helps ensure that all standard styles are identical.
+ % The file btxbst.doc has the documentation for this style.
+
+ENTRY
+ { address
+ author
+ booktitle
+ chapter
+ edition
+ editor
+ howpublished
+ institution
+ journal
+ key
+ month
+ note
+ number
+ organization
+ pages
+ publisher
+ school
+ series
+ title
+ type
+ volume
+ year
+ eprint % urlbst
+ doi % urlbst
+ pubmed % urlbst
+ url % urlbst
+ lastchecked % urlbst
+ newpage % tub
+ urlnewline % tub
+ }
+ {}
+ { label }
+
+INTEGERS { output.state before.all mid.sentence after.sentence after.block }
+
+% urlbst...
+% 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.
+ #0 'addeprints := % 0=no eprints; 1=include eprints
+ #1 'adddoiresolver := % 0=no DOI resolver; 1=include it
+ #1 'addpubmedresolver := % 0=no PUBMED resolver; 1=include it
+ #2 'hrefform := % 0=no crossrefs; 1=hypertex xrefs; 2=hyperref refs
+ #0 'inlinelinks := % 0=URLs explicit; 1=URLs attached to titles
+
+ % String constants, which you _might_ want to tweak.
+ "" 'urlintro := % prefix before URL; typically "Available from:" or "URL":
+ "online" 'onlinestring := % indication that resource is online; typically "online"
+ "cited " 'citedstring := % indicator of citation date; typically "cited "
+ "[link]" 'linktextstring := % dummy link text; typically "[link]"
+ "http://arxiv.org/abs/" 'eprinturl := % prefix to make URL from eprint ref
+ "arXiv:" 'eprintprefix := % text prefix printed before eprint ref; typically "arXiv:"
+ "http://dx.doi.org/" 'doiurl := % prefix to make URL from DOI
+ "doi:" 'doiprefix := % text prefix printed before DOI ref; typically "doi:"
+ "http://www.ncbi.nlm.nih.gov/pubmed/" 'pubmedurl := % prefix to make URL from PUBMED
+ "PMID:" '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
+}
+% ...urlbst to here
+
+% tub: move up to use earlier.
+FUNCTION {not}
+{ { #0 }
+ { #1 }
+ if$
+}
+
+FUNCTION {and}
+{ 'skip$
+ { pop$ #0 }
+ if$
+}
+
+FUNCTION {or}
+{ { pop$ #1 }
+ 'skip$
+ if$
+}
+
+FUNCTION {init.state.consts}
+{ #0 'outside.brackets := % urlbst...
+ #1 'open.brackets :=
+ #2 'within.brackets :=
+ #3 'close.brackets := % ...urlbst to here
+
+ #0 'before.all :=
+ #1 'mid.sentence :=
+ #2 'after.sentence :=
+ #3 'after.block :=
+}
+
+STRINGS { s t last.output.check }
+
+% urlbst
+% arg on stack is what needs to be written.
+% If a journal, we want to omit the following comma, as in
+% "TUGboat 39(1)" instead of the default "TUGboat, 39(1)".
+%
+FUNCTION {output.nonnull.original}
+{ 's :=
+ output.state mid.sentence =
+ { last.output.check "journal" = not
+ { ", " * }
+ { " " *}
+ if$
+ write$
+ }
+ { output.state after.block =
+ { add.period$ write$
+ newline$
+ "\newblock " write$
+ }
+ { output.state before.all =
+ 'write$
+ { add.period$ " " * write$ }
+ if$
+ }
+ if$
+ mid.sentence 'output.state :=
+ }
+ if$
+ s
+}
+
+% urlbst...
+% 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 := }
+ { "\newline\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$
+}
+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$
+}
+% ...urlbst to here
+
+FUNCTION {output}
+{ duplicate$ empty$
+ 'pop$
+ 'output.nonnull
+ if$
+}
+
+% tub: save name of field (what's on stack, e.g., "journal") in
+% variable last.output.check for use in output.nonnull.original.
+FUNCTION {output.check}
+{ 't :=
+ duplicate$ empty$
+ { pop$ "empty " t * " in " * cite$ * warning$ }
+ { t 'last.output.check :=
+ output.nonnull }
+ if$
+}
+
+FUNCTION {output.bibitem.original} % urlbst (renamed from output.bibitem, so it can be wrapped below)
+{ newline$
+ "\bibitem{" write$
+ cite$ write$
+ "}" write$
+ newline$
+ ""
+ before.all 'output.state :=
+}
+
+FUNCTION {fin.entry.original} % urlbst (renamed from fin.entry, so it can be wrapped below)
+{ doi empty$ url empty$ and
+ { add.period$ }
+ { skip$ }
+ if$
+ write$
+ newline$
+}
+
+
+FUNCTION {new.block}
+{ output.state before.all =
+ 'skip$
+ { after.block 'output.state := }
+ if$
+}
+
+FUNCTION {new.sentence}
+{ output.state after.block =
+ 'skip$
+ { output.state before.all =
+ 'skip$
+ { after.sentence 'output.state := }
+ if$
+ }
+ if$
+}
+
+FUNCTION {new.block.checka}
+{ empty$
+ 'skip$
+ 'new.block
+ if$
+}
+
+FUNCTION {new.block.checkb}
+{ empty$
+ swap$ empty$
+ and
+ 'skip$
+ 'new.block
+ if$
+}
+
+FUNCTION {new.sentence.checka}
+{ empty$
+ 'skip$
+ 'new.sentence
+ if$
+}
+
+FUNCTION {new.sentence.checkb}
+{ empty$
+ swap$ empty$
+ and
+ 'skip$
+ 'new.sentence
+ if$
+}
+
+FUNCTION {field.or.null}
+{ duplicate$ empty$
+ { pop$ "" }
+ 'skip$
+ if$
+}
+
+FUNCTION {emphasize}
+{ duplicate$ empty$
+ { pop$ "" }
+ { "{\em " swap$ * "}" * }
+ if$
+}
+
+INTEGERS { nameptr namesleft numnames }
+
+FUNCTION {format.names}
+{ 's :=
+ #1 'nameptr :=
+ s num.names$ 'numnames :=
+ numnames 'namesleft :=
+ { namesleft #0 > }
+ { s nameptr "{f.~}{vv~}{ll}{, jj}" format.name$ 't :=
+ nameptr #1 >
+ % following lines implement printing only 2 author names (+ "et al.")
+ % whenever there are more than 4 authors. Thanks Mico.
+ % https://tex.stackexchange.com/questions/26575
+ { nameptr #2
+ #1 + =
+ numnames #3
+ > and
+ { "others" 't :=
+ #1 'namesleft := }
+ 'skip$
+ if$
+ namesleft #1 >
+ { ", " * t * }
+ { numnames #2 >
+ { "," * }
+ 'skip$
+ if$
+ t "others" =
+ { " et~al." * }
+ { " and " * t * }
+ if$
+ }
+ if$
+ }
+ 't
+ if$
+ nameptr #1 + 'nameptr :=
+ namesleft #1 - 'namesleft :=
+ }
+ while$
+}
+
+FUNCTION {format.authors}
+{ author empty$
+ { "" }
+ { author format.names }
+ if$
+}
+
+FUNCTION {format.editors}
+{ editor empty$
+ { "" }
+ { editor format.names
+ editor num.names$ #1 >
+ { ", eds." * }
+ { ", ed." * }
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.title}
+{ title empty$
+ { "" }
+ { title "t" change.case$ }
+ if$
+}
+
+FUNCTION {n.dashify}
+{ 't :=
+ ""
+ { t empty$ not }
+ { t #1 #1 substring$ "-" =
+ { t #1 #2 substring$ "--" = not
+ { "--" *
+ t #2 global.max$ substring$ 't :=
+ }
+ { { t #1 #1 substring$ "-" = }
+ { "-" *
+ t #2 global.max$ substring$ 't :=
+ }
+ while$
+ }
+ if$
+ }
+ { t #1 #1 substring$ *
+ t #2 global.max$ substring$ 't :=
+ }
+ if$
+ }
+ while$
+}
+
+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$
+}
+
+FUNCTION {format.btitle}
+{ title emphasize
+}
+
+FUNCTION {tie.or.space.connect}
+{ duplicate$ text.length$ #3 <
+ { "~" }
+ { " " }
+ if$
+ swap$ * *
+}
+
+FUNCTION {either.or.check}
+{ empty$
+ 'pop$
+ { "can't use both " swap$ * " fields in " * cite$ * warning$ }
+ if$
+}
+
+FUNCTION {format.bvolume}
+{ volume empty$
+ { "" }
+ { "vol." volume tie.or.space.connect
+ series empty$
+ 'skip$
+ { " of " * series emphasize * }
+ if$
+ "volume and number" number either.or.check
+ }
+ if$
+}
+
+FUNCTION {format.number.series}
+{ volume empty$
+ { number empty$
+ { series field.or.null }
+ { output.state mid.sentence =
+ { "number" }
+ { "Number" }
+ if$
+ number tie.or.space.connect
+ series empty$
+ { "there's a number but no series in " cite$ * warning$ }
+ { " in " * series * }
+ if$
+ }
+ if$
+ }
+ { "" }
+ if$
+}
+
+FUNCTION {format.edition}
+{ edition empty$
+ { "" }
+ { output.state mid.sentence =
+ { edition "l" change.case$ " edition" * }
+ { edition "t" change.case$ " edition" * }
+ if$
+ }
+ if$
+}
+
+INTEGERS { multiresult }
+
+FUNCTION {multi.page.check}
+{ 't :=
+ #0 'multiresult :=
+ { multiresult not
+ t empty$ not
+ and
+ }
+ { t #1 #1 substring$
+ duplicate$ "-" =
+ swap$ duplicate$ "," =
+ swap$ "+" =
+ or or
+ { #1 'multiresult := }
+ { t #2 global.max$ substring$ 't := }
+ if$
+ }
+ while$
+ multiresult
+}
+
+FUNCTION {format.pages}
+{ pages empty$
+ { "" }
+ { pages multi.page.check
+ { "pp." pages n.dashify tie.or.space.connect }
+ { "p." pages tie.or.space.connect }
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.vol.num.pages}
+{ volume field.or.null
+ number empty$
+ 'skip$
+ { "(" number * ")" * *
+ volume empty$
+ { "there's a number but no volume in " cite$ * warning$ }
+ 'skip$
+ if$
+ }
+ if$
+ pages empty$
+ 'skip$
+ { duplicate$ empty$
+ { pop$ format.pages }
+ { ":" * pages n.dashify * }
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.chapter.pages}
+{ chapter empty$
+ 'format.pages
+ { type empty$
+ { "chapter" }
+ { type "l" change.case$ }
+ if$
+ chapter tie.or.space.connect
+ pages empty$
+ 'skip$
+ { ", " * format.pages * }
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.in.ed.booktitle}
+{ booktitle empty$
+ { "" }
+ { editor empty$
+ { "In~" booktitle emphasize * }
+ { "In " format.editors * ", " * booktitle emphasize * }
+ if$
+ }
+ if$
+}
+
+FUNCTION {empty.misc.check}
+{ author empty$ title empty$ howpublished empty$
+ month empty$ year empty$ note empty$
+ and and and and and
+ key empty$ not and
+ { "all relevant fields are empty in " cite$ * warning$ }
+ 'skip$
+ if$
+}
+
+FUNCTION {format.thesis.type}
+{ type empty$
+ 'skip$
+ { pop$
+ type "t" change.case$
+ }
+ if$
+}
+
+FUNCTION {format.tr.number}
+{ type empty$
+ { "Technical Report" }
+ 'type
+ if$
+ number empty$
+ { "t" change.case$ }
+ { number tie.or.space.connect }
+ if$
+}
+
+FUNCTION {format.article.crossref}
+{ key empty$
+ { journal empty$
+ { "need key or journal for " cite$ * " to crossref " * crossref *
+ warning$
+ ""
+ }
+ { "In {\em " journal * "\/}" * }
+ if$
+ }
+ { "In " key * }
+ if$
+ " \cite{" * crossref * "}" *
+}
+
+FUNCTION {format.crossref.editor}
+{ editor #1 "{vv~}{ll}" format.name$
+ editor num.names$ duplicate$
+ #2 >
+ { pop$ " et~al." * }
+ { #2 <
+ 'skip$
+ { editor #2 "{ff }{vv }{ll}{ jj}" format.name$ "others" =
+ { " et~al." * }
+ { " and " * editor #2 "{vv~}{ll}" format.name$ * }
+ if$
+ }
+ if$
+ }
+ if$
+}
+
+FUNCTION {format.book.crossref}
+{ volume empty$
+ { "empty volume in " cite$ * "'s crossref of " * crossref * warning$
+ "In "
+ }
+ { "Volume" volume tie.or.space.connect
+ " of " *
+ }
+ if$
+ editor empty$
+ editor field.or.null author field.or.null =
+ or
+ { key empty$
+ { series empty$
+ { "need editor, key, or series for " cite$ * " to crossref " *
+ crossref * warning$
+ "" *
+ }
+ { "{\em " * series * "\/}" * }
+ if$
+ }
+ { key * }
+ if$
+ }
+ { format.crossref.editor * }
+ if$
+ " \cite{" * crossref * "}" *
+}
+
+FUNCTION {format.incoll.inproc.crossref}
+{ editor empty$
+ editor field.or.null author field.or.null =
+ or
+ { key empty$
+ { booktitle empty$
+ { "need editor, key, or booktitle for " cite$ * " to crossref " *
+ crossref * warning$
+ ""
+ }
+ { "In {\em " booktitle * "\/}" * }
+ if$
+ }
+ { "In " key * }
+ if$
+ }
+ { "In " format.crossref.editor * }
+ if$
+ " \cite{" * crossref * "}" *
+}
+
+% urlbst...
+% 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}
+{
+ "\newline\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.
+% Likewise if the url is empty.
+% Likewise if doi is present, on the assumption that
+% url most likely redundantly specifies the same info as those fields; this
+% seems to be what people do in practice.
+FUNCTION {format.url}
+{ inlinelinks #1 = url empty$ or
+ doi empty$ not or
+ howpublished empty$ not 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.
+%
+% If the `urlnewline' field is present, output \newline before the
+% url value.
+FUNCTION {output.url}
+{ url empty$
+ 'skip$
+ { new.block
+ format.url output
+ urlnewline empty$ not
+ { "\newline " write$ }
+ 'skip$
+ if$
+ 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
+ newpage empty$ not
+ { "\newpage " write$ }
+ 'skip$
+ if$
+}
+
+% 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
+}
+% ...urlbst to here
+
+
+FUNCTION {article}
+{ output.bibitem
+ format.authors "author" output.check
+ new.block
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.title "title" output.check
+ new.block
+ crossref missing$
+ { journal emphasize "journal" output.check
+ possibly.setup.inlinelink format.vol.num.pages output% urlbst
+ format.date "year" output.check
+ }
+ { format.article.crossref output.nonnull
+ format.pages output
+ }
+ if$
+ new.block
+ note output
+ fin.entry
+}
+
+FUNCTION {book}
+{ output.bibitem
+ author empty$
+ { format.editors "author and editor" output.check }
+ { format.authors output.nonnull
+ crossref missing$
+ { "author and editor" editor either.or.check }
+ 'skip$
+ if$
+ }
+ if$
+ new.block
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.btitle "title" output.check
+ crossref missing$
+ { format.bvolume output
+ new.block
+ format.number.series output
+ new.sentence
+ publisher "publisher" output.check
+ address output
+ }
+ { new.block
+ format.book.crossref output.nonnull
+ }
+ if$
+ format.edition output
+ format.date "year" output.check
+ new.block
+ note output
+ fin.entry
+}
+
+FUNCTION {booklet}
+{ output.bibitem
+ format.authors output
+ new.block
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.title "title" output.check
+ howpublished address new.block.checkb
+ howpublished output
+ address output
+ format.date output
+ new.block
+ note output
+ fin.entry
+}
+
+FUNCTION {inbook}
+{ output.bibitem
+ author empty$
+ { format.editors "author and editor" output.check }
+ { format.authors output.nonnull
+ crossref missing$
+ { "author and editor" editor either.or.check }
+ 'skip$
+ if$
+ }
+ if$
+ new.block
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.btitle "title" output.check
+ crossref missing$
+ { format.bvolume output
+ format.chapter.pages "chapter and pages" output.check
+ new.block
+ format.number.series output
+ new.sentence
+ publisher "publisher" output.check
+ address output
+ }
+ { format.chapter.pages "chapter and pages" output.check
+ new.block
+ format.book.crossref output.nonnull
+ }
+ if$
+ format.edition output
+ format.date "year" output.check
+ new.block
+ note output
+ fin.entry
+}
+
+FUNCTION {incollection}
+{ output.bibitem
+ format.authors "author" output.check
+ new.block
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.title "title" output.check
+ new.block
+ crossref missing$
+ { format.in.ed.booktitle "booktitle" output.check
+ format.bvolume output
+ format.number.series output
+ format.chapter.pages output
+ new.sentence
+ publisher "publisher" output.check
+ address output
+ format.edition output
+ format.date "year" output.check
+ }
+ { format.incoll.inproc.crossref output.nonnull
+ format.chapter.pages output
+ }
+ if$
+ new.block
+ note output
+ fin.entry
+}
+
+FUNCTION {inproceedings}
+{ output.bibitem
+ format.authors "author" output.check
+ new.block
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.title "title" output.check
+ new.block
+ crossref missing$
+ { format.in.ed.booktitle "booktitle" output.check
+ format.bvolume output
+ format.number.series output
+ format.pages output
+ address empty$
+ { organization publisher new.sentence.checkb
+ organization output
+ publisher output
+ format.date "year" output.check
+ }
+ { address output.nonnull
+ format.date "year" output.check
+ new.sentence
+ organization output
+ publisher output
+ }
+ if$
+ }
+ { format.incoll.inproc.crossref output.nonnull
+ format.pages output
+ }
+ if$
+ new.block
+ note output
+ fin.entry
+}
+
+FUNCTION {conference} { inproceedings }
+
+FUNCTION {manual}
+{ output.bibitem
+ author empty$
+ { organization empty$
+ 'skip$
+ { organization output.nonnull
+ address output
+ }
+ if$
+ }
+ { format.authors output.nonnull }
+ if$
+ new.block
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.btitle "title" output.check
+ author empty$
+ { organization empty$
+ { address new.block.checka
+ address output
+ }
+ 'skip$
+ if$
+ }
+ { organization address new.block.checkb
+ organization output
+ address output
+ }
+ if$
+ format.edition output
+ format.date output
+ new.block
+ note output
+ fin.entry
+}
+
+FUNCTION {mastersthesis}
+{ output.bibitem
+ format.authors "author" output.check
+ new.block
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.title "title" output.check
+ new.block
+ "Master's thesis" format.thesis.type output.nonnull
+ school "school" output.check
+ address output
+ format.date "year" output.check
+ new.block
+ note output
+ fin.entry
+}
+
+FUNCTION {misc}
+{ output.bibitem
+ format.authors output
+ title howpublished new.block.checkb
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.title output
+ howpublished new.block.checka
+ howpublished output
+ format.date output
+ new.block
+ note output
+ fin.entry
+ empty.misc.check
+}
+
+FUNCTION {online}
+{ misc }
+
+FUNCTION {phdthesis}
+{ output.bibitem
+ format.authors "author" output.check
+ new.block
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.btitle "title" output.check
+ new.block
+ "PhD thesis" format.thesis.type output.nonnull
+ school "school" output.check
+ address output
+ format.date "year" output.check
+ new.block
+ note output
+ fin.entry
+}
+
+FUNCTION {proceedings}
+{ output.bibitem
+ editor empty$
+ { organization output }
+ { format.editors output.nonnull }
+ if$
+ new.block
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.btitle "title" output.check
+ format.bvolume output
+ format.number.series output
+ address empty$
+ { editor empty$
+ { publisher new.sentence.checka }
+ { organization publisher new.sentence.checkb
+ organization output
+ }
+ if$
+ publisher output
+ format.date "year" output.check
+ }
+ { address output.nonnull
+ format.date "year" output.check
+ new.sentence
+ editor empty$
+ 'skip$
+ { organization output }
+ if$
+ publisher output
+ }
+ if$
+ new.block
+ note output
+ fin.entry
+}
+
+FUNCTION {techreport}
+{ output.bibitem
+ format.authors "author" output.check
+ new.block
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.title "title" output.check
+ new.block
+ format.tr.number output.nonnull
+ institution "institution" output.check
+ address output
+ format.date "year" output.check
+ new.block
+ note output
+ fin.entry
+}
+
+FUNCTION {unpublished}
+{ output.bibitem
+ format.authors "author" output.check
+ new.block
+ title empty$ 'skip$ 'possibly.setup.inlinelink if$ % urlbst
+ format.title "title" output.check
+ new.block
+ note "note" output.check
+ format.date output
+ fin.entry
+}
+
+FUNCTION {default.type} { misc }
+
+MACRO {jan} {"Jan."}
+
+MACRO {feb} {"Feb."}
+
+MACRO {mar} {"Mar."}
+
+MACRO {apr} {"Apr."}
+
+MACRO {may} {"May"}
+
+MACRO {jun} {"June"}
+
+MACRO {jul} {"July"}
+
+MACRO {aug} {"Aug."}
+
+MACRO {sep} {"Sept."}
+
+MACRO {oct} {"Oct."}
+
+MACRO {nov} {"Nov."}
+
+MACRO {dec} {"Dec."}
+
+MACRO {acmcs} {"ACM Comput. Surv."}
+
+MACRO {acta} {"Acta Inf."}
+
+MACRO {cacm} {"Commun. ACM"}
+
+MACRO {ibmjrd} {"IBM J. Res. Dev."}
+
+MACRO {ibmsj} {"IBM Syst.~J."}
+
+MACRO {ieeese} {"IEEE Trans. Softw. Eng."}
+
+MACRO {ieeetc} {"IEEE Trans. Comput."}
+
+MACRO {ieeetcad}
+ {"IEEE Trans. Comput.-Aided Design Integrated Circuits"}
+
+MACRO {ipl} {"Inf. Process. Lett."}
+
+MACRO {jacm} {"J.~ACM"}
+
+MACRO {jcss} {"J.~Comput. Syst. Sci."}
+
+MACRO {scp} {"Sci. Comput. Programming"}
+
+MACRO {sicomp} {"SIAM J. Comput."}
+
+MACRO {tocs} {"ACM Trans. Comput. Syst."}
+
+MACRO {tods} {"ACM Trans. Database Syst."}
+
+MACRO {tog} {"ACM Trans. Gr."}
+
+MACRO {toms} {"ACM Trans. Math. Softw."}
+
+MACRO {toois} {"ACM Trans. Office Inf. Syst."}
+
+MACRO {toplas} {"ACM Trans. Prog. Lang. Syst."}
+
+MACRO {tcs} {"Theoretical Comput. Sci."}
+
+READ
+
+FUNCTION {sortify}
+{ purify$
+ "l" change.case$
+}
+
+INTEGERS { len }
+
+FUNCTION {chop.word}
+{ 's :=
+ 'len :=
+ s #1 len substring$ =
+ { s len #1 + global.max$ substring$ }
+ 's
+ if$
+}
+
+FUNCTION {sort.format.names}
+{ 's :=
+ #1 'nameptr :=
+ ""
+ s num.names$ 'numnames :=
+ numnames 'namesleft :=
+ { namesleft #0 > }
+ { nameptr #1 >
+ { " " * }
+ 'skip$
+ if$
+ s nameptr "{vv{ } }{ll{ }}{ f{ }}{ jj{ }}" format.name$ 't :=
+ nameptr numnames = t "others" = and
+ { "et al" * }
+ { t sortify * }
+ if$
+ nameptr #1 + 'nameptr :=
+ namesleft #1 - 'namesleft :=
+ }
+ while$
+}
+
+FUNCTION {sort.format.title}
+{ 't :=
+ "A " #2
+ "An " #3
+ "The " #4 t chop.word
+ chop.word
+ chop.word
+ sortify
+ #1 global.max$ substring$
+}
+
+FUNCTION {author.sort}
+{ author empty$
+ { key empty$
+ { "to sort, need author or key in " cite$ * warning$
+ ""
+ }
+ { key sortify }
+ if$
+ }
+ { author sort.format.names }
+ if$
+}
+
+FUNCTION {author.editor.sort}
+{ author empty$
+ { editor empty$
+ { key empty$
+ { "to sort, need author, editor, or key in " cite$ * warning$
+ ""
+ }
+ { key sortify }
+ if$
+ }
+ { editor sort.format.names }
+ if$
+ }
+ { author sort.format.names }
+ if$
+}
+
+FUNCTION {author.organization.sort}
+{ author empty$
+ { organization empty$
+ { key empty$
+ { "to sort, need author, organization, or key in " cite$ * warning$
+ ""
+ }
+ { key sortify }
+ if$
+ }
+ { "The " #4 organization chop.word sortify }
+ if$
+ }
+ { author sort.format.names }
+ if$
+}
+
+FUNCTION {editor.organization.sort}
+{ editor empty$
+ { organization empty$
+ { key empty$
+ { "to sort, need editor, organization, or key in " cite$ * warning$
+ ""
+ }
+ { key sortify }
+ if$
+ }
+ { "The " #4 organization chop.word sortify }
+ if$
+ }
+ { editor sort.format.names }
+ if$
+}
+
+FUNCTION {presort}
+{ type$ "book" =
+ type$ "inbook" =
+ or
+ 'author.editor.sort
+ { type$ "proceedings" =
+ 'editor.organization.sort
+ { type$ "manual" =
+ 'author.organization.sort
+ 'author.sort
+ if$
+ }
+ if$
+ }
+ if$
+ " "
+ *
+ year field.or.null sortify
+ *
+ " "
+ *
+ title field.or.null
+ sort.format.title
+ *
+ #1 entry.max$ substring$
+ 'sort.key$ :=
+}
+
+ITERATE {presort}
+
+SORT
+
+STRINGS { longest.label }
+
+INTEGERS { number.label longest.label.width }
+
+FUNCTION {initialize.longest.label}
+{ "" 'longest.label :=
+ #1 'number.label :=
+ #0 'longest.label.width :=
+}
+
+FUNCTION {longest.label.pass}
+{ number.label int.to.str$ 'label :=
+ number.label #1 + 'number.label :=
+ label width$ longest.label.width >
+ { label 'longest.label :=
+ label width$ 'longest.label.width :=
+ }
+ 'skip$
+ if$
+}
+
+EXECUTE {initialize.longest.label}
+
+ITERATE {longest.label.pass}
+
+FUNCTION {begin.bib}
+{ preamble$ empty$
+ 'skip$
+ { preamble$ write$ newline$ }
+ if$
+ "\begin{thebibliography}{" longest.label * "}" * write$ newline$
+}
+
+EXECUTE {begin.bib}
+
+EXECUTE {init.urlbst.variables} % urlbst
+EXECUTE {init.state.consts}
+
+ITERATE {call.type$}
+
+FUNCTION {end.bib}
+{ newline$
+ "\end{thebibliography}" write$ newline$
+}
+
+EXECUTE {end.bib}