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path: root/language/greek/greek-fontenc/lgr2licr.lua.html
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<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta charset="utf-8" />
<meta name="generator" content="Docutils 0.21b.dev: https://docutils.sourceforge.io/" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<meta name="dcterms.rights" content="© 2010 Günter Milde" />
<title>LGR Transcription to Greek LICR transformation</title>
<link rel="schema.dcterms" href="http://purl.org/dc/terms/"/>
<style type="text/css">

/* Minimal style sheet for the HTML output of Docutils.                    */
/*                                                                         */
/* :Author: Günter Milde, based on html4css1.css by David Goodger          */
/* :Id: $Id$                                                               */
/* :Copyright: © 2015, 2021 Günter Milde.                                  */
/* :License: Released under the terms of the `2-Clause BSD license`_,      */
/*    in short:                                                            */
/*                                                                         */
/*    Copying and distribution of this file, with or without modification, */
/*    are permitted in any medium without royalty provided the copyright   */
/*    notice and this notice are preserved.                                */
/*                                                                         */
/*    This file is offered as-is, without any warranty.                    */
/*                                                                         */
/* .. _2-Clause BSD license: http://www.spdx.org/licenses/BSD-2-Clause     */

/* This CSS3 stylesheet defines rules for Docutils elements without        */
/* HTML equivalent. It is required to make the document semantics visible. */
/*                                                                         */
/* .. _validates: http://jigsaw.w3.org/css-validator/validator$link        */

/* titles */
p.topic-title,
p.admonition-title,
p.system-message-title {
  font-weight: bold;
}
p.sidebar-title,
p.rubric {
  font-weight: bold;
  font-size: larger;
}
p.rubric {
  color: maroon;
}
p.subtitle,
p.section-subtitle,
p.sidebar-subtitle {
  font-weight: bold;
  margin-top: -0.5em;
}
h1 + p.subtitle {
  font-size: 1.6em;
}
a.toc-backref {
  color: inherit;
  text-decoration: none;
}

/* Warnings, Errors */
.system-messages h2,
.system-message-title,
span.problematic {
  color: red;
}

/* Inline Literals */
.docutils.literal {
  font-family: monospace;
  white-space: pre-wrap;
}
/* do not wrap at hyphens and similar: */
.literal > span.pre { white-space: nowrap; }

/* Lists */

/* compact and simple lists: no margin between items */
.simple  li, .simple  ul, .simple  ol,
.compact li, .compact ul, .compact ol,
.simple  > li p, dl.simple  > dd,
.compact > li p, dl.compact > dd {
  margin-top: 0;
  margin-bottom: 0;
}
/* Nested Paragraphs */
p:first-child { margin-top: 0; }
p:last-child { margin-bottom: 0; }
details > p:last-child { margin-bottom: 1em; }

/* Table of Contents */
.contents ul.auto-toc { /* section numbers present */
  list-style-type: none;
}

/* Enumerated Lists */
ol.arabic     { list-style: decimal }
ol.loweralpha { list-style: lower-alpha }
ol.upperalpha { list-style: upper-alpha }
ol.lowerroman { list-style: lower-roman }
ol.upperroman { list-style: upper-roman }

/* Definition Lists and Derivatives */
dt .classifier { font-style: italic }
dt .classifier:before {
  font-style: normal;
  margin: 0.5em;
  content: ":";
}
/* Field Lists and similar */
/* bold field name, content starts on the same line */
dl.field-list,
dl.option-list,
dl.docinfo {
  display: flow-root;
}
dl.field-list > dt,
dl.option-list > dt,
dl.docinfo > dt {
  font-weight: bold;
  clear: left;
  float: left;
  margin: 0;
  padding: 0;
  padding-right: 0.2em;
}
/* Offset for field content (corresponds to the --field-name-limit option) */
dl.field-list > dd,
dl.option-list > dd,
dl.docinfo > dd {
  margin-left:  9em; /* ca. 14 chars in the test examples, fit all Docinfo fields */
}
/* start nested lists on new line */
dd > dl:first-child,
dd > ul:first-child,
dd > ol:first-child {
  clear: left;
}
/* start field-body on a new line after long field names */
dl.field-list > dd > *:first-child,
dl.option-list > dd > *:first-child
{
  display: inline-block;
  width: 100%;
  margin: 0;
}

/* Bibliographic Fields (docinfo) */
dl.docinfo pre.address {
  font: inherit;
  margin: 0.5em 0;
}
dl.docinfo > dd.authors > p { margin: 0; }

/* Option Lists */
dl.option-list > dt { font-weight: normal; }
span.option { white-space: nowrap; }

/* Footnotes and Citations  */

.footnote, .citation { margin: 1em 0; } /* default paragraph skip (Firefox) */
/* hanging indent */
.citation { padding-left: 2em; }
.footnote { padding-left: 1.7em; }
.footnote.superscript { padding-left: 1.0em; }
.citation > .label { margin-left: -2em; }
.footnote > .label { margin-left: -1.7em; }
.footnote.superscript > .label { margin-left: -1.0em; }

.footnote > .label + *,
.citation > .label + * {
  display: inline-block;
  margin-top: 0;
  vertical-align: top;
}
.footnote > .backrefs + *,
.citation > .backrefs + * {
  margin-top: 0;
}
.footnote > .label + p, .footnote > .backrefs + p,
.citation > .label + p, .citation > .backrefs + p {
  display: inline;
  vertical-align: inherit;
}

.backrefs { user-select: none; }
.backrefs > a { font-style: italic; }

/* superscript footnotes */
a[role="doc-noteref"].superscript,
.footnote.superscript > .label,
.footnote.superscript > .backrefs {
  vertical-align: super;
  font-size: smaller;
  line-height: 1;
}
a[role="doc-noteref"].superscript > .fn-bracket,
.footnote.superscript > .label > .fn-bracket {
  /* hide brackets in display but leave for copy/paste */
  display: inline-block;
  width: 0;
  overflow: hidden;
}
[role="doc-noteref"].superscript + [role="doc-noteref"].superscript {
  padding-left: 0.15em; /* separate consecutive footnote references */
  /* TODO: unfortunately, "+" also selects with text between the references. */
}

/* Alignment */
.align-left   {
  text-align: left;
  margin-right: auto;
}
.align-center {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}
.align-right  {
  text-align: right;
  margin-left: auto;
}
.align-top    { vertical-align: top; }
.align-middle { vertical-align: middle; }
.align-bottom { vertical-align: bottom; }

/* reset inner alignment in figures and tables */
figure.align-left, figure.align-right,
table.align-left, table.align-center, table.align-right {
  text-align: inherit;
}

/* Text Blocks */
.topic { margin: 1em 2em; }
.sidebar,
.admonition,
.system-message {
  margin: 1em 2em;
  border: thin solid;
  padding: 0.5em 1em;
}
div.line-block { display: block; }
div.line-block div.line-block, pre { margin-left: 2em; }

/* Code line numbers: dropped when copying text from the page */
pre.code .ln { display: none; }
pre.code code:before {
  content: attr(data-lineno); /* …, none) fallback not supported by any browser */
  color: gray;
}

/* Tables */
table {
  border-collapse: collapse;
}
td, th {
  border: thin solid silver;
  padding: 0 1ex;
}
.borderless td, .borderless th {
  border: 0;
  padding: 0;
  padding-right: 0.5em /* separate table cells */
}

table > caption {
  text-align: left;
  margin-top: 0.2em;
  margin-bottom: 0.2em;
}
table.captionbelow {
  caption-side: bottom;
}

/* Document Header and Footer */
header { border-bottom: 1px solid black; }
footer { border-top: 1px solid black; }

/* Images are block-level by default in Docutils */
/* New HTML5 block elements: set display for older browsers */
img, header, footer, main, aside, nav, section, figure, video, details {
  display: block;
}
/* inline images */
p img, p video, figure img, figure video {
  display: inline;
}

</style>
<style type="text/css">

/* CSS3_ style sheet for the output of Docutils HTML5 writer.  */
/* Generic responsive design for all screen sizes.                         */
/*                                                                         */
/* :Author: Günter Milde                                                   */
/*                                                                         */
/* :Id: $Id$                                                               */
/* :Copyright: © 2021 Günter Milde.                                        */
/* :License: Released under the terms of the `2-Clause BSD license`_,      */
/*    in short:                                                            */
/*                                                                         */
/*    Copying and distribution of this file, with or without modification, */
/*    are permitted in any medium without royalty provided the copyright   */
/*    notice and this notice are preserved.                                */
/*                                                                         */
/*    This file is offered as-is, without any warranty.                    */
/*                                                                         */
/* .. _2-Clause BSD license: http://www.spdx.org/licenses/BSD-2-Clause     */
/* .. _CSS3: https://www.w3.org/Style/CSS/                                 */

/* Note:                                                                   */
/* This style sheet is provisional:                                        */
/* the API is not settled and may change with any minor Docutils version.  */



/* General Settings */
/* ================ */


* { box-sizing: border-box; }

body {
  background-color: #fafaf6;
  margin: auto;
  --field-indent: 6.6em; /* indent of fields in field lists */
  --sidebar-margin-right: 0; /* adapted in media queries below */
}
main {
  counter-reset: figure table;
}
body > * {
  background-color: white;
  line-height: 1.6;
  padding: 0.5rem calc(29% - 7.2rem); /* go from 5% to 15% (8.15em/54em) */
  margin: auto;
  max-width: 100rem;
}
sup, sub { /* avoid additional inter-line space for lines with sup/sub */
  line-height: 1;
}

/* Vertical Space (Parskip) */
p, ol, ul, dl, li,
div.line-block,
.topic,
.footnote, .citation,
div > math,
table {
  margin-top: 0.5em;
  margin-bottom: 0.5em;
}
h1, h2, h3, h4, h5, h6,
dl > dd, details > p:last-child {
  margin-bottom: 0.5em;
}

/* Indented Blocks */
blockquote, figure, .topic {
  margin: 1em 2%;
  padding-left: 1em;
}
div.line-block div.line-block,
pre, dd, dl.option-list {
  margin-left: calc(2% + 1em);
}

/* Object styling */
/* ============== */

footer, header {
  font-size: small;
}

/* Frontmatter */
div.dedication {
  padding: 0;
  margin: 1.4em 0;
  font-style: italic;
  font-size: large;
}
.dedication p.topic-title {
  display: none;
}

blockquote p.attribution,
.topic p.attribution {
  text-align: right;
}

/* Table of Contents */
nav.contents ul {
  padding-left: 1em;
}
ul.auto-toc > li > p { /* hanging indent */
  padding-left: 1em;
  text-indent: -1em;
}
main > nav.contents  ul:not(.auto-toc) {
  list-style-type: square;
}
main > nav.contents  ul ul:not(.auto-toc) {
  list-style-type: disc;
}
main > nav.contents  ul ul ul:not(.auto-toc) {
  list-style-type: '\2B29\ ';
}
main > nav.contents  ul ul ul ul:not(.auto-toc) {
  list-style-type: '\2B1D\ ';
}
main > nav.contents  ul ul ul ul ul:not(.auto-toc) {
  list-style-type: '\2B2A\ ';
}
nav.contents ul > li::marker {
  color: grey;
}

/* Transitions */
hr {
  margin: 1em 10%;
}

/* Lists */

ul, ol {
  padding-left: 1.1em; /* indent by bullet width (Firefox, DejaVu fonts) */
}
dl.field-list > dd,
dl.docinfo > dd {
  margin-left: var(--field-indent); /* adapted in media queries or HTML */
}
dl.option-list > dd {
  margin-left: 20%;
}
/* run-in: start field-body on same line after long field names */
dl.field-list.run-in > dd p {
  display: block;
}
/* "description style" like in most dictionaries, encyclopedias etc. */
dl.description {
  display: flow-root;
}
dl.description > dt {
  clear: left;
  float: left;
  margin: 0;
  padding: 0;
  padding-right: 0.3em;
  font-weight: bold;
}
dl.description > dd:after {
  display: table;
  content: "";
  clear: left; /* clearfix for empty descriptions */
}
/* start lists nested in description/field lists on new line */
dd > dl:first-child,
dd > ul:first-child,
dd > ol:first-child {
  clear: left;
}

/* disclosures */
details { padding-left: 1em; }
summary { margin-left: -1em; }

/* Footnotes and Citations */
.footnote {
  font-size: small;
}

/* Images, Figures, and Tables */
img {
  display: block;
}
p > img, p > a > img,
figure > img, figure > a > img {
  display: inline;
}

figcaption,
table > caption {
  /*   font-size: small; */
  font-style: italic;
}
figcaption > .legend {
  font-size: small;
  font-style: initial;
}
figure.numbered > figcaption > p:before {
  counter-increment: figure;
  content: "Figure " counter(figure) ": ";
  font-weight: bold;
  font-style: initial;
}

table tr {
  text-align: left;
  vertical-align: baseline;
}
table.booktabs { /* "booktabs" style (no vertical lines) */
  border-top: 2px solid;
  border-bottom: 2px solid;
}
table.booktabs * {
  border: 0;
}
table.booktabs th {
  border-bottom: thin solid;
}
table.numbered > caption:before {
  counter-increment: table;
  content: "Table " counter(table) ": ";
  font-weight: bold;
  font-style: initial;
}

/* Admonitions and System Messages */
.admonition,
div.system-message {
  border: thin solid silver;
  margin: 1em 2%;
  padding: 0.5em 1em;
}
.caution p.admonition-title,
.attention p.admonition-title,
.danger p.admonition-title,
.warning p.admonition-title,
div.error {
  color: maroon;
}
div.system-message > p > span.literal {
  overflow-wrap: break-word;
}

/* Literal and Code */
pre.literal-block, pre.doctest{
  padding: 0.2em;
  overflow-x: auto;
}
.literal-block, .doctest, span.literal {
  background-color: #f6f9f8;
}
.system-message span.literal {
  background-color: inherit;
}

/* basic highlighting: for a complete scheme, see */
/* https://docutils.sourceforge.io/sandbox/stylesheets/ */
pre.code .comment, code .comment { color: #5C6576 }
pre.code .keyword, code .keyword { color: #3B0D06; font-weight: bold }
pre.code .literal.string, code .literal.string { color: #0C5404 }
pre.code .name.builtin, code .name.builtin { color: #352B84 }
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</head>
<body>
<main id="lgr-transcription-to-greek-licr-transformation">
<h1 class="title">LGR Transcription to Greek LICR transformation</h1>
<dl class="docinfo simple">
<dt class="copyright">Copyright<span class="colon">:</span></dt>
<dd class="copyright">© 2010 Günter Milde</dd>
<dt class="licence">Licence<span class="colon">:</span></dt>
<dd class="licence"><p>This work may be distributed and/or modified under the
conditions of the <a class="reference external" href="http://www.latex-project.org/lppl.txt">LaTeX Project Public License</a>, either
version 1.3 of this license or any later version.</p>
</dd>
</dl>
<!-- #!/usr/bin/env lua -->
<p>The LGR font encoding is the de-facto standard for Greek typesetting with
LaTeX. This file provides a translation from the Latin transliteration defined
by LGR into the LaTeX Internal Character Representation (LICR) macros.</p>
<pre class="literal-block">usage = [[
Usage: lua lgr2licr.lua [OPTIONS] [STRING]
  Convert STRING from Latin transliteration to LICR macros for Greek symbols.
  (This dumb conversion fails if the string contains TeX macros.)
  Without argument, the script reads from standard input like a
  redirected file. End interactive input with Ctrl-D.
Options: -h, --help      show this help
         -f, --file      read input from file STRING
]]

if arg[1] == &quot;-h&quot; or arg[1] == &quot;--help&quot; then
    print(usage)
    return
end</pre>
<p>Get input string:</p>
<pre class="literal-block">local s

if arg[1] == &quot;-f&quot; then
    local f = assert(io.open(arg[2], &quot;r&quot;))
    s = f:read(&quot;*all&quot;)
    f:close()
elseif arg[1] then
    s = table.concat(arg, &quot; &quot;) .. &quot;\n&quot;
else
    -- test:
    -- s = &quot;\\emph{x\\'us}&quot;
    s = io.read(&quot;*all&quot;)
end</pre>
<p>The mapping from the LGR Latin transliteration to LICR macros:</p>
<pre class="literal-block">LGR_map = {
  A = &quot;\\textAlpha{}&quot;,
  B = &quot;\\textBeta{}&quot;,
  G = &quot;\\textGamma{}&quot;,
  D = &quot;\\textDelta{}&quot;,
  E = &quot;\\textEpsilon{}&quot;,
  Z = &quot;\\textZeta{}&quot;,
  H = &quot;\\textEta{}&quot;,
  J = &quot;\\textTheta{}&quot;,
  I = &quot;\\textIota{}&quot;,
  K = &quot;\\textKappa{}&quot;,
  L = &quot;\\textLambda{}&quot;,
  M = &quot;\\textMu{}&quot;,
  N = &quot;\\textNu{}&quot;,
  X = &quot;\\textXi{}&quot;,
  O = &quot;\\textOmicron{}&quot;,
  P = &quot;\\textPi{}&quot;,
  R = &quot;\\textRho{}&quot;,
  S = &quot;\\textSigma{}&quot;,
  T = &quot;\\textTau{}&quot;,
  U = &quot;\\textUpsilon{}&quot;,
  F = &quot;\\textPhi{}&quot;,
  Q = &quot;\\textChi{}&quot;,
  Y = &quot;\\textPsi{}&quot;,
  W = &quot;\\textOmega{}&quot;,

  a = &quot;\\textalpha{}&quot;,
  b = &quot;\\textbeta{}&quot;,
  g = &quot;\\textgamma{}&quot;,
  d = &quot;\\textdelta{}&quot;,
  e = &quot;\\textepsilon{}&quot;,
  z = &quot;\\textzeta{}&quot;,
  h = &quot;\\texteta{}&quot;,
  j = &quot;\\texttheta{}&quot;,
  i = &quot;\\textiota{}&quot;,
  k = &quot;\\textkappa{}&quot;,
  l = &quot;\\textlambda{}&quot;,
  m = &quot;\\textmu{}&quot;,
  n = &quot;\\textnu{}&quot;,
  x = &quot;\\textxi{}&quot;,
  o = &quot;\\textomicron{}&quot;,
  p = &quot;\\textpi{}&quot;,
  r = &quot;\\textrho{}&quot;,
  s = &quot;\\textautosigma{}&quot;,
  c = &quot;\\textfinalsigma{}&quot;,
  t = &quot;\\texttau{}&quot;,
  u = &quot;\\textupsilon{}&quot;,
  f = &quot;\\textphi{}&quot;,
  q = &quot;\\textchi{}&quot;,
  y = &quot;\\textpsi{}&quot;,
  w = &quot;\\textomega{}&quot;,
  v = &quot;\\noboundary{}&quot;,

  [&quot;'&quot;] = &quot;\\'&quot;,
  [&quot;`&quot;] = &quot;\\`&quot;,
  [&quot;~&quot;] = &quot;\\~&quot;,
  [&quot;&lt;&quot;] = &quot;\\&lt;&quot;,
  [&quot;&gt;&quot;] = &quot;\\&gt;&quot;,
  [&quot;|&quot;] = &quot;\\|&quot;,
  ['&quot;'] = '\\&quot;',
  [&quot;;&quot;] = &quot;\\textanoteleia{}&quot;,
  [&quot;?&quot;] = &quot;\\texterotimatiko{}&quot;,
}</pre>
<p>Return substitution string for 3 captures:</p>
<p><cite>c1</cite> backslash
<cite>c2</cite> a-zA-Z
<cite>c3</cite> any other char</p>
<pre class="literal-block">function lgr_replace(c1, c2, c3)
    -- print (c1, c2, c3)
    if c1 == &quot;\\&quot; then
        if c2 and (c2 ~= &quot;&quot;) then
            return c1 .. c2 .. (LGR_map[c3] or c3 or &quot;&quot;)
        end
        return c1 .. c3
    end
    c2 = string.gsub(c2, &quot;s(.)&quot;, &quot;sv%1&quot;)
    return (string.gsub(c2, &quot;.&quot;, LGR_map) or &quot;&quot;) .. (LGR_map[c3] or c3 or &quot;&quot;)
end

-- Use the mapping to replace every ASCII-character with
-- non-standard meaning to the corresponding LICR macro
-- (skip macros)::
  -- *([a-zA-Z'`~&lt;&gt;|\&quot;;?]
s = string.gsub(s, &quot;(\\?)([a-zA-Z]*)([^\\]?)&quot;, lgr_replace)</pre>
<p>Ligatures:</p>
<pre class="literal-block">s = string.gsub(s, &quot;%(%(&quot;, &quot;\\guillemetleft{}&quot;)
s = string.gsub(s, &quot;%)%)&quot;, &quot;\\guillemetright{}&quot;)
s = string.gsub(s, &quot;\\'\\'&quot;, &quot;\\textquoteright{}&quot;)               -- ''
s = string.gsub(s, &quot;\\`\\`&quot;, &quot;\\textquoteleft{}&quot;)                -- ``
s = string.gsub(s, '\&quot;(%s)', &quot;\\textquoteright{}%1&quot;)</pre>
<p>Separating empty group “{}” only required if followed by space or ASCII:</p>
<pre class="literal-block">s = string.gsub(s, &quot;{}([^ a-zA-Z])&quot;, &quot;%1&quot;)</pre>
<p>Autosigma replacements:</p>
<pre class="literal-block">s = string.gsub(s, &quot;\\textautosigma\\noboundary&quot;, &quot;\\textsigma&quot;)  -- sv
s = string.gsub(s, &quot;\\textautosigma(\\['`~&lt;&gt;|\&quot;])&quot;, &quot;\\textsigma%1&quot;) -- accents

s = string.gsub(s, &quot;\\textautosigma([-%s!#$%%&amp;%(%)*+,./0-9:=%[%]{|}])&quot;,
                   &quot;\\textfinalsigma%1&quot;)

s = string.gsub(s, &quot;\\textautosigma(\\textquote)&quot;, &quot;\\textfinalsigma%1&quot;)
s = string.gsub(s, &quot;\\textautosigma(\\texterotimatiko)&quot;, &quot;\\textfinalsigma%1&quot;)
s = string.gsub(s, &quot;\\textautosigma(\\textanoteleia)&quot;, &quot;\\textfinalsigma%1&quot;)

s = string.gsub(s, &quot;\\textautosigma$&quot;, &quot;\\textfinalsigma&quot;)</pre>
<p>Write the result to stdout:</p>
<pre class="literal-block">io.write(s)</pre>
</main>
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