From f78d662dfc67defc578f6e2ca8a01e9288b993b4 Mon Sep 17 00:00:00 2001
From: Kevin Day <thekevinday@gmail.com>
Date: Fri, 10 Jun 2022 00:15:17 -0500
Subject: [PATCH] Feature: Provide simple script for assisting in the mass
 generation of Unicode handling code.

This is a very simple script and is not intended for complex tasks.
---
 build/scripts/generate_unicode.sh | 130 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 130 insertions(+)
 create mode 100644 build/scripts/generate_unicode.sh

diff --git a/build/scripts/generate_unicode.sh b/build/scripts/generate_unicode.sh
new file mode 100644
index 0000000..bb54fc3
--- /dev/null
+++ b/build/scripts/generate_unicode.sh
@@ -0,0 +1,130 @@
+#!/bin/bash
+# license: lgpl-2.1-or-later
+# programmer: Kevin Day
+#
+# A simple script for generating code regarding unicode values.
+# This requires the python "unicode" program.
+
+main() {
+  local file="codes.txt"
+  local code=
+  local sequence=
+  local block=
+  local previous=
+  local s0=
+  local s1=
+  local s2=
+  local s3=
+  local u0=
+  local u1=
+  local u2=
+  local u3=
+  local -i i=0
+
+  for code in $(cat $file) ; do
+
+    process
+
+    if [[ "$previous" == "" || "$block" == "$previous" ]] ; then
+      if [[ $i -eq 0 ]] ; then
+        s0=$sequence
+        u0=$code
+        let i++
+      elif [[ $i -eq 1 ]] ; then
+        s1=$sequence
+        u1=$code
+        let i++
+      elif [[ $i -eq 2 ]] ; then
+        s2=$sequence
+        u2=$code
+        let i++
+      else
+        s3=$sequence
+        u3=$code
+
+        generate "$block"
+
+        s0=
+        s1=
+        s2=
+        s3=
+
+        u0=
+        u1=
+        u2=
+        u3=
+
+        let i=0
+      fi
+    else
+      if [[ $i -gt 0 ]] ; then
+        generate "$previous"
+      fi
+
+      s0=$sequence
+      s1=
+      s2=
+      s3=
+
+      u0=$code
+      u1=
+      u2=
+      u3=
+
+      let i=1
+    fi
+
+    previous="$block"
+  done
+
+  if [[ $s0 != "" ]] ; then
+    generate "$previous"
+  fi
+}
+
+process() {
+  local utf8=$(unicode --color=0 $code | grep -o "^UTF-8:.*UTF-16BE:" | sed -e 's|UTF-8:||' -e 's|UTF-16BE:||' | sed -e 's| ||g')
+
+  block=$(unicode --color=0 $code | grep -o "^Unicode block: .*$" | sed -e 's|Unicode block:.*; ||')
+
+  sequence="0x$utf8"
+  if [[ $(echo -n "$utf8" | wc -c) -eq 2 ]] ; then
+    sequence="${sequence}000000"
+  elif [[ $(echo -n "$utf8" | wc -c) -eq 4 ]] ; then
+    sequence="${sequence}0000"
+  elif [[ $(echo -n "$utf8" | wc -c) -eq 6 ]] ; then
+    sequence="${sequence}00"
+  fi
+}
+
+generate() {
+  local comment=
+  local condition=
+  local block="$1"
+
+  if [[ $u3 == "" ]] ; then
+    if [[ $u2 == "" ]] ; then
+      if [[ $u1 == "" ]] ; then
+        comment="$u0"
+        condition="character == $s0"
+      else
+        comment="$u0, $u1"
+        condition="character == $s0 || character == $s1"
+      fi
+    else
+      comment="$u0, $u1, $u2"
+      condition="character == $s0 || character == $s1 || character == $s2"
+    fi
+  else
+    comment="$u0, $u1, $u2, $u3"
+    condition="character == $s0 || character == $s1 || character == $s2 || character == $s3"
+  fi
+
+  echo
+  echo "// $block: $comment."
+  echo "if ($condition) {"
+  echo "  return F_true;"
+  echo "}"
+}
+
+main
-- 
1.8.3.1