Initial checkin of Pika from heckimp

data/tags/its/pika-tags.its

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+<?xml version="1.0"?>
+<its:rules xmlns:its="http://www.w3.org/2005/11/its" version="1.0">
+  <its:translateRule selector="/tags" translate="no"/>
+  <its:translateRule selector="//thetag" translate="yes"/>
+</its:rules>

data/tags/its/pika-tags.loc

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+<?xml version="1.0"?>
+<locatingRules>
+  <locatingRule name="PikaTags" pattern="*.xml">
+    <documentRule localName="tags" target="pika-tags.its"/>
+  </locatingRule>
+</locatingRules>

data/tags/meson.build

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+pika_tags_default = i18n.merge_file(
+  input : 'pika-tags-default.xml.in',
+  output: '@BASENAME@',
+  data_dirs: meson.current_source_dir(),
+  po_dir: potags_dir,
+  install: true,
+  install_dir: pikadatadir / 'tags',
+)
+
+if xmllint.found()
+  custom_target('validate-tags',
+    command: [
+      xmllint,
+      '--output', '@OUTPUT@',
+      '--path', meson.current_source_dir(),
+      '--valid', pika_tags_default,
+    ],
+    output: [ 'validate-tags-output.xml' ],
+    build_by_default: true,
+    install: false
+  )
+endif

data/tags/pika-tags-default.xml.in

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+<?xml version='1.0' encoding='UTF-8'?>
+<!DOCTYPE tags SYSTEM "pika-tags.dtd">
+
+<!-- This is a list of default tags for PIKA resources.                    -->
+<!--                                                                       -->
+<!-- Please do not use separator characters, such as comma, in tags.       -->
+
+<tags>
+  <resource identifier="${pika_data_dir}/brushes/Round.vbr" checksum="a7f02530d3bc7484c8f9240cbe9c65b1">
+    <tag>
+      <thetag>round</thetag>
+    </tag>
+  </resource>
+
+  <resource identifier="${pika_data_dir}/brushes/Round-Fuzzy.vbr" checksum="f8cb2466841104a55e42afce4568d103">
+    <tag>
+      <!-- fuzzy as in a feathered, blurred, unfocused, soft brush -->
+      <thetag>fuzzy</thetag>
+      <thetag>round</thetag>
+    </tag>
+  </resource>
+</tags>

data/tags/pika-tags.dtd

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+<!-- Simple DTD for PIKA tags -->
+
+<!ELEMENT tags (resource+)>
+
+<!ELEMENT resource (tag*)>
+<!ATTLIST resource identifier CDATA #REQUIRED>
+<!ATTLIST resource checksum CDATA #IMPLIED>
+
+<!ELEMENT tag (thetag+)>
+
+<!ELEMENT thetag (#PCDATA)>
+<!ATTLIST thetag xml:lang CDATA #IMPLIED>