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<h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/cldr.ex#L1" title="View Source" class="icon-action" rel="help">
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<span translate="no">Plausible.Cldr.Number.Transliterate</span>
<small class="app-vsn" translate="no">(Plausible v0.0.1)</small>
</h1>
<section id="moduledoc">
<p>Transliteration for digits and separators.</p><p>Transliterating a string is an expensive business. First the string has to
be exploded into its component graphemes. Then for each grapheme we have
to map to the equivalent in the other <code class="inline">{locale, number_system}</code>. Then we
have to reassemble the string.</p><p>Effort is made to short circuit where possible. Transliteration is not
required for any <code class="inline">{locale, number_system}</code> that is the same as <code class="inline">{&quot;en&quot;, &quot;latn&quot;}</code> since the implementation uses this combination for the placeholders during
formatting already. When short circuiting is possible (typically the en-*
locales with &quot;latn&quot; number_system - the total number of short circuited
locales is 211 of the 537 in CLDR) the overall number formatting is twice as
fast than when formal transliteration is required.</p><h3 id="module-configuring-precompilation-of-digit-transliterations" class="section-heading">
<a href="#module-configuring-precompilation-of-digit-transliterations" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Configuring precompilation of digit transliterations</span>
</h3>
<p>This module includes <a href="https://hexdocs.pm/ex_cldr_numbers/2.33.1/Cldr.Number.Transliterate.html#transliterate_digits/3"><code class="inline">Cldr.Number.Transliterate.transliterate_digits/3</code></a> which transliterates
digits between number systems. For example from :arabic to :latn. Since generating a
transliteration map is slow, pairs of transliterations can be configured so that the
transliteration map is created at compile time and therefore speeding up transliteration at
run time.</p><p>To configure these transliteration pairs, add the to the <code class="inline">use Cldr</code> configuration
in a backend module:</p><pre><code class="makeup elixir" translate="no"><span class="kd">defmodule</span><span class="w"> </span><span class="nc">MyApp.Cldr</span><span class="w"> </span><span class="k" data-group-id="5828064464-1">do</span><span class="w">
</span><span class="kn">use</span><span class="w"> </span><span class="nc">Cldr</span><span class="p">,</span><span class="w">
</span><span class="ss">locale</span><span class="p">:</span><span class="w"> </span><span class="p" data-group-id="5828064464-2">[</span><span class="s">&quot;en&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;fr&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;th&quot;</span><span class="p" data-group-id="5828064464-2">]</span><span class="p">,</span><span class="w">
</span><span class="ss">default_locale</span><span class="p">:</span><span class="w"> </span><span class="s">&quot;en&quot;</span><span class="p">,</span><span class="w">
</span><span class="ss">precompile_transliterations</span><span class="p">:</span><span class="w"> </span><span class="p" data-group-id="5828064464-3">[</span><span class="p" data-group-id="5828064464-4">{</span><span class="ss">:latn</span><span class="p">,</span><span class="w"> </span><span class="ss">:thai</span><span class="p" data-group-id="5828064464-4">}</span><span class="p">,</span><span class="w"> </span><span class="p" data-group-id="5828064464-5">{</span><span class="ss">:arab</span><span class="p">,</span><span class="w"> </span><span class="ss">:thai</span><span class="p" data-group-id="5828064464-5">}</span><span class="p" data-group-id="5828064464-3">]</span><span class="w">
</span><span class="k" data-group-id="5828064464-1">end</span></code></pre><p>Where each tuple in the list configures one transliteration map. In this example, two maps are
configured: from <code class="inline">:latn</code> to <code class="inline">:thai</code> and from <code class="inline">:arab</code> to <code class="inline">:thai</code>.</p><p>A list of configurable number systems is returned by <a href="https://hexdocs.pm/ex_cldr_numbers/2.33.1/Cldr.Number.System.html#numeric_systems/0"><code class="inline">Cldr.Number.System.numeric_systems/0</code></a>.</p><p>If a transliteration is requested between two number pairs that have not been configured for
precompilation, a warning is logged.</p>
</section>
<section id="summary" class="details-list">
<h1 class="section-heading">
<a class="hover-link" href="#summary">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Summary</span>
</h1>
<div class="summary-functions summary">
<h2>
<a href="#functions">Functions</a>
</h2>
<div class="summary-row">
<div class="summary-signature">
<a href="#transliterate/3" translate="no">transliterate(sequence, locale \\ Plausible.Cldr.get_locale(), number_system \\ System.default_number_system_type())</a>
</div>
<div class="summary-synopsis"><p>Transliterates from latin digits to another number system's digits.</p></div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#transliterate!/3" translate="no">transliterate!(sequence, locale, number_system)</a>
</div>
</div>
<div class="summary-row">
<div class="summary-signature">
<a href="#transliterate_digits/3" translate="no">transliterate_digits(digits, from_system, to_system)</a>
</div>
<div class="summary-synopsis"><p>Transliterates digits from one number system to another number system</p></div>
</div>
</div>
</section>
<section id="functions" class="details-list">
<h1 class="section-heading">
<a class="hover-link" href="#functions">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Functions</span>
</h1>
<div class="functions-list">
<section class="detail" id="transliterate/3">
<span id="transliterate/1"></span>
<span id="transliterate/2"></span>
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<h1 class="signature" translate="no">transliterate(sequence, locale \\ Plausible.Cldr.get_locale(), number_system \\ System.default_number_system_type())</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/cldr.ex#L1" class="icon-action" rel="help" title="View Source">
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</div>
<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> transliterate(
<a href="https://hexdocs.pm/elixir/String.html#t:t/0">String.t</a>(),
<a href="https://hexdocs.pm/ex_cldr/2.39.2/Cldr.LanguageTag.html#t:t/0">Cldr.LanguageTag.t</a>() | <a href="https://hexdocs.pm/ex_cldr/2.39.2/Cldr.Locale.html#t:locale_name/0">Cldr.Locale.locale_name</a>(),
<a href="https://hexdocs.pm/ex_cldr_numbers/2.33.1/Cldr.Number.System.html#t:system_name/0">Cldr.Number.System.system_name</a>() | <a href="https://hexdocs.pm/ex_cldr_numbers/2.33.1/Cldr.Number.System.html#t:types/0">Cldr.Number.System.types</a>()
) :: <a href="https://hexdocs.pm/elixir/String.html#t:t/0">String.t</a>() | {:error, {<a href="https://hexdocs.pm/elixir/typespecs.html#built-in-types">module</a>(), <a href="https://hexdocs.pm/elixir/String.html#t:t/0">String.t</a>()}}</pre>
</div>
<p>Transliterates from latin digits to another number system's digits.</p><p>Transliterates the latin digits 0..9 to their equivalents in
another number system. Also transliterates the decimal and grouping
separators as well as the plus, minus and exponent symbols. Any other character
in the string will be returned &quot;as is&quot;.</p><h2 id="transliterate/3-arguments" class="section-heading">
<a href="#transliterate/3-arguments" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Arguments</span>
</h2>
<ul><li><p><code class="inline">sequence</code> is the string to be transliterated.</p></li><li><p><code class="inline">locale</code> is any known locale, defaulting to <a href="Plausible.Cldr.html#get_locale/0"><code class="inline">Plausible.Cldr.get_locale/0</code></a>.</p></li><li><p><code class="inline">number_system</code> is any known number system. If expressed as a <code class="inline">string</code> it
is the actual name of a known number system. If epressed as an <code class="inline">atom</code> it is
used as a key to look up a number system for the locale (the usual keys are
<code class="inline">:default</code> and <code class="inline">:native</code> but :traditional and :finance are also part of the
standard). See <a href="Plausible.Cldr.Number.System.html#number_systems_for/1"><code class="inline">Plausible.Cldr.Number.System.number_systems_for/1</code></a> for a locale to
see what number system types are defined. The default is <code class="inline">:default</code>.</p></li></ul><p>For available number systems see <a href="https://hexdocs.pm/ex_cldr_numbers/2.33.1/Cldr.Number.System.html#number_systems/0"><code class="inline">Cldr.Number.System.number_systems/0</code></a>
and <a href="Plausible.Cldr.Number.System.html#number_systems_for/1"><code class="inline">Plausible.Cldr.Number.System.number_systems_for/1</code></a>. Also see
<a href="Plausible.Cldr.Number.Symbol.html#number_symbols_for/1"><code class="inline">Plausible.Cldr.Number.Symbol.number_symbols_for/1</code></a>.</p><h2 id="transliterate/3-examples" class="section-heading">
<a href="#transliterate/3-examples" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Examples</span>
</h2>
<pre><code class="makeup elixir" translate="no"><span class="gp unselectable">iex&gt; </span><span class="nc">Plausible.Cldr.Number.Transliterate</span><span class="o">.</span><span class="n">transliterate</span><span class="p" data-group-id="5422401045-1">(</span><span class="s">&quot;123556&quot;</span><span class="p" data-group-id="5422401045-1">)</span><span class="w">
</span><span class="s">&quot;123556&quot;</span><span class="w">
</span><span class="gp unselectable">iex&gt; </span><span class="nc">Plausible.Cldr.Number.Transliterate</span><span class="o">.</span><span class="n">transliterate</span><span class="p" data-group-id="5422401045-2">(</span><span class="s">&quot;123,556.000&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;fr&quot;</span><span class="p">,</span><span class="w"> </span><span class="ss">:default</span><span class="p" data-group-id="5422401045-2">)</span><span class="w">
</span><span class="s">&quot;123556,000&quot;</span><span class="w">
</span><span class="gp unselectable">iex&gt; </span><span class="nc">Plausible.Cldr.Number.Transliterate</span><span class="o">.</span><span class="n">transliterate</span><span class="p" data-group-id="5422401045-3">(</span><span class="s">&quot;123556&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;th&quot;</span><span class="p">,</span><span class="w"> </span><span class="ss">:default</span><span class="p" data-group-id="5422401045-3">)</span><span class="w">
</span><span class="s">&quot;123556&quot;</span><span class="w">
</span><span class="gp unselectable">iex&gt; </span><span class="nc">Plausible.Cldr.Number.Transliterate</span><span class="o">.</span><span class="n">transliterate</span><span class="p" data-group-id="5422401045-4">(</span><span class="s">&quot;123556&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;th&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;thai&quot;</span><span class="p" data-group-id="5422401045-4">)</span><span class="w">
</span><span class="s">&quot;๑๒๓๕๕๖&quot;</span><span class="w">
</span><span class="gp unselectable">iex&gt; </span><span class="nc">Plausible.Cldr.Number.Transliterate</span><span class="o">.</span><span class="n">transliterate</span><span class="p" data-group-id="5422401045-5">(</span><span class="s">&quot;123556&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;th&quot;</span><span class="p">,</span><span class="w"> </span><span class="ss">:native</span><span class="p" data-group-id="5422401045-5">)</span><span class="w">
</span><span class="s">&quot;๑๒๓๕๕๖&quot;</span><span class="w">
</span><span class="gp unselectable">iex&gt; </span><span class="nc">Plausible.Cldr.Number.Transliterate</span><span class="o">.</span><span class="n">transliterate</span><span class="p" data-group-id="5422401045-6">(</span><span class="s">&quot;Some number is: 123556&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;th&quot;</span><span class="p">,</span><span class="w"> </span><span class="s">&quot;thai&quot;</span><span class="p" data-group-id="5422401045-6">)</span><span class="w">
</span><span class="s">&quot;Some number is: ๑๒๓๕๕๖&quot;</span></code></pre>
</section>
</section>
<section class="detail" id="transliterate!/3">
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<i class="ri-link-m" aria-hidden="true"></i>
<span class="sr-only">Link to this function</span>
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<h1 class="signature" translate="no">transliterate!(sequence, locale, number_system)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/cldr.ex#L1" class="icon-action" rel="help" title="View Source">
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<section class="docstring">
</section>
</section>
<section class="detail" id="transliterate_digits/3">
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<h1 class="signature" translate="no">transliterate_digits(digits, from_system, to_system)</h1>
<a href="https://github.com/plausible/analytics/blob/main/lib/plausible/cldr.ex#L1" class="icon-action" rel="help" title="View Source">
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<section class="docstring">
<div class="specs">
<pre translate="no"><span class="attribute">@spec</span> transliterate_digits(
<a href="https://hexdocs.pm/elixir/String.html#t:t/0">String.t</a>(),
<a href="https://hexdocs.pm/ex_cldr_numbers/2.33.1/Cldr.Number.System.html#t:system_name/0">Cldr.Number.System.system_name</a>(),
<a href="https://hexdocs.pm/ex_cldr_numbers/2.33.1/Cldr.Number.System.html#t:system_name/0">Cldr.Number.System.system_name</a>()
) :: <a href="https://hexdocs.pm/elixir/String.html#t:t/0">String.t</a>()</pre>
</div>
<p>Transliterates digits from one number system to another number system</p><ul><li><p><code class="inline">digits</code> is binary representation of a number</p></li><li><p><code class="inline">from_system</code> and <code class="inline">to_system</code> are number system names in atom form. See
<a href="https://hexdocs.pm/ex_cldr_numbers/2.33.1/Cldr.Number.System.html#numeric_systems/0"><code class="inline">Cldr.Number.System.numeric_systems/0</code></a> for available number systems.</p></li></ul><h2 id="transliterate_digits/3-example" class="section-heading">
<a href="#transliterate_digits/3-example" class="hover-link">
<i class="ri-link-m" aria-hidden="true"></i>
</a>
<span class="text">Example</span>
</h2>
<pre><code class="makeup elixir" translate="no"><span class="gp unselectable">iex&gt; </span><span class="nc">Plausible.Cldr.Number.Transliterate</span><span class="o">.</span><span class="n">transliterate_digits</span><span class="w"> </span><span class="s">&quot;٠١٢٣٤٥٦٧٨٩&quot;</span><span class="p">,</span><span class="w"> </span><span class="ss">:arab</span><span class="p">,</span><span class="w"> </span><span class="ss">:latn</span><span class="w">
</span><span class="s">&quot;0123456789&quot;</span></code></pre>
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