Add Termcolor dependency and bundle it in dist/.

CMakeLists.txt

@@ -13,6 +13,7 @@ list(APPEND CMAKE_MODULE_PATH "${PROJECT_SOURCE_DIR}/cmake")
 
 # Project build options.
 option(WITH_TESTS "Compile tests." NO)
+option(FALLBACK_BUNDLED "Fall back to bundled libs." YES)
 
 set(CMAKE_CXX_STANDARD 17)
 set(CMAKE_CXX_STANDARD_REQUIRED ON)
@@ -26,6 +27,14 @@ find_package(Gettext REQUIRED)
 find_package(Filesystem REQUIRED COMPONENTS Final Experimental)
 find_package(LibArchive 3.2 REQUIRED)
 find_package(fmt 4 REQUIRED CONFIG)
+find_package(termcolor CONFIG)
+if(NOT termcolor_FOUND)
+  if(FALLBACK_BUNDLED)
+    add_subdirectory(dist/termcolor)
+  else()
+    message(FATAL_ERROR "Termcolor was not found.")
+  endif()
+endif()
 
 add_subdirectory(src)
 

README.adoc

@@ -14,6 +14,7 @@
 :uri-libarchive: https://www.libarchive.org/
 :uri-fmt: https://github.com/fmtlib/fmt
 :uri-asciidoc: http://asciidoc.org/
+uri-termcolor: https://termcolor.readthedocs.io/
 
 *{project}* is a search tool for EPUB e-books.
 
@@ -49,6 +50,7 @@ image::https://repology.org/badge/vertical-allrepos/epubgrep.svg[]
 * link:{uri-libarchive}[libarchive] (tested: 3.5 / 3.2)
 * link:{uri-fmt}[fmt] (tested: 7.0 / 4.0)
 * link:{uri-asciidoc}[AsciiDoc] (tested: 8.6 / 9.0)
+* link:{uri-termcolor}[Termcolor] (tested: 2.0)
 * Optional
   ** Tests: link:{uri-catch}[Catch] (tested: 2.13 / 1.10)
 
@@ -79,5 +81,6 @@ cmake --build . -- --jobs=$(nproc --ignore=1)
 * `-DCMAKE_BUILD_TYPE=Debug` for a debug build.
 * `-DWITH_TESTS=YES` if you want to compile the tests.
 * `-DXGETTEXT_CMD=String` The program to use instead of `xgettext`.
+* `-DFALLBACK_BUNDLED=NO if you don't want to fall back on bundled libraries.
 
 include::{uri-base}/raw/branch/main/CONTRIBUTING.adoc[]

src/CMakeLists.txt

@@ -21,7 +21,8 @@ target_link_libraries(${PROJECT_NAME}_lib
   Boost::program_options
   Boost::regex
   std::filesystem
-  fmt::fmt)
+  fmt::fmt
+  termcolor::termcolor)
 
 if(${CMAKE_VERSION} VERSION_LESS 3.17)
   target_link_libraries(${PROJECT_NAME}_lib