From 1a95c1d4824bb6f97cd5a63039bd531cb2b315de Mon Sep 17 00:00:00 2001
From: Steve Lhomme <slhomme@matroska.org>
Date: Sat, 15 Oct 2022 14:12:52 +0200
Subject: [PATCH] use the utf-8 C++ library as an external (header-only)
 library

It might be used as an external package someday. For it's a CMake interface
since it's a header only piece of code.
---
 CMakeLists.txt                  |  3 +++
 src/EbmlUnicodeString.cpp       |  2 +-
 src/lib/utf8-cpp/CMakeLists.txt | 10 ++++++++++
 3 files changed, 14 insertions(+), 1 deletion(-)
 create mode 100644 src/lib/utf8-cpp/CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index cfdb788b..18995c4f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -95,6 +95,9 @@ if(MSVC)
   target_compile_definitions(ebml PRIVATE _CRT_SECURE_NO_WARNINGS)
 endif()
 
+add_subdirectory(src/lib/utf8-cpp)
+target_link_libraries(ebml PRIVATE $<BUILD_INTERFACE:utf8-cpp>)
+
 include(GenerateExportHeader)
 generate_export_header(ebml EXPORT_MACRO_NAME EBML_DLL_API)
 target_sources(ebml
diff --git a/src/EbmlUnicodeString.cpp b/src/EbmlUnicodeString.cpp
index 5aef8b5c..8678a92f 100644
--- a/src/EbmlUnicodeString.cpp
+++ b/src/EbmlUnicodeString.cpp
@@ -40,7 +40,7 @@
 
 #include "ebml/EbmlUnicodeString.h"
 
-#include "lib/utf8-cpp/source/utf8/checked.h"
+#include <utf8/checked.h>
 
 namespace libebml {
 
diff --git a/src/lib/utf8-cpp/CMakeLists.txt b/src/lib/utf8-cpp/CMakeLists.txt
new file mode 100644
index 00000000..a850c0ca
--- /dev/null
+++ b/src/lib/utf8-cpp/CMakeLists.txt
@@ -0,0 +1,10 @@
+add_library(utf8-cpp INTERFACE)
+
+target_include_directories(utf8-cpp INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/source)
+target_sources(utf8-cpp INTERFACE 
+    ${CMAKE_CURRENT_SOURCE_DIR}/source/utf8/checked.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/source/utf8/core.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/source/utf8/cpp11.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/source/utf8/cpp17.h
+    ${CMAKE_CURRENT_SOURCE_DIR}/source/utf8/checked.h
+)