Project init

.clang-format

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+BasedOnStyle: 'Google'
+
+AlignConsecutiveMacros:
+    Enabled:         true
+    AcrossEmptyLines: true
+    AcrossComments:  true
+    AlignCompound:   false
+    PadOperators:    false
+AccessModifierOffset: -4
+#AlignAfterOpenBracket: AlwaysBreak
+AlignArrayOfStructures: Right
+ColumnLimit: 120
+QualifierAlignment: Left
+FixNamespaceComments: true
+IndentWidth: 4
+JavaScriptQuotes: Single
+NamespaceIndentation: None
+ObjCBlockIndentWidth: 4
+PointerAlignment: Right
+SpaceBeforeRangeBasedForLoopColon: true
+SpacesInContainerLiterals: false
+InsertNewlineAtEOF: true

.github/workflows/ci.yml

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+name: ci
+
+on:
+    push:
+        branches: [ master ]
+    pull_request:
+        branches: [ master ]
+
+jobs:
+    code-style:
+        runs-on: ubuntu-22.04
+        steps:
+            -   name: Checkout
+                uses: actions/checkout@v3
+                with:
+                    submodules: recursive
+            -   name: Install clang-format-17
+                run: |
+                    sudo apt-get remove clang-format*
+                    sudo apt-get autoremove
+                    wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | sudo apt-key add -
+                    echo "deb https://apt.llvm.org/jammy/ llvm-toolchain-jammy-17 main" | sudo tee -a /etc/apt/sources.list
+                    echo "deb-src https://apt.llvm.org/jammy/ llvm-toolchain-jammy-17 main" | sudo tee -a /etc/apt/sources.list
+                    sudo apt-get update
+                    sudo apt-get install clang-format-17
+                    sudo ln -s -f /usr/bin/clang-format-17 /usr/bin/clang-format
+                    clang-format --version
+            -   name: Check code style
+                run: |
+                    cmake -B build .
+                    cmake --build build -- check-format
+
+    linux:
+        needs: code-style
+        runs-on: ubuntu-latest
+        steps:
+            -   name: Checkout
+                uses: actions/checkout@v3
+                with:
+                    submodules: recursive
+            -   name: Build
+                run: |
+                    cmake -B build .
+                    cmake --build build -- all
+                    cmake --build build -- check
+
+    macos:
+        needs: code-style
+        runs-on: macos-latest
+        steps:
+            -   name: Checkout
+                uses: actions/checkout@v3
+                with:
+                    submodules: recursive
+            -   name: Build
+                run: |
+                    cmake -B build .
+                    cmake --build build -- all
+                    cmake --build build -- check
+
+    windows-x64:
+        needs: code-style
+        runs-on: windows-2019
+        steps:
+            -   name: Checkout
+                uses: actions/checkout@v3
+                with:
+                    submodules: recursive
+            -   name: Build
+                shell: cmd
+                run: |
+                    call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars64.bat"
+                    cmake -GNinja -B build .
+                    cmake --build build -- all
+                    cmake --build build -- check
+
+    windows-x86:
+        needs: code-style
+        runs-on: windows-2019
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v3
+              with:
+                  submodules: recursive
+            - name: Build
+              shell: cmd
+              run: |
+                  call "C:\Program Files (x86)\Microsoft Visual Studio\2019\Enterprise\VC\Auxiliary\Build\vcvars32.bat"
+                  cmake -GNinja -B build .
+                  cmake --build build -- all
+                  cmake --build build -- check

.gitignore

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+.idea
+.DS_Store
+cmake-build-*/
+build/

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.15)
+project(imageinfo)
+
+set(CMAKE_CXX_STANDARD 11)
+
+set(IMAGEINFO_IS_MASTER_PROJECT OFF)
+if (${CMAKE_SOURCE_DIR} STREQUAL ${CMAKE_CURRENT_SOURCE_DIR})
+    set(IMAGEINFO_IS_MASTER_PROJECT ON)
+endif ()
+
+option(IMAGEINFO_BUILD_TOOLS "Build tool" ${IMAGEINFO_IS_MASTER_PROJECT})
+option(IMAGEINFO_BUILD_TESTS "Build tests" ${IMAGEINFO_IS_MASTER_PROJECT})
+option(IMAGEINFO_BUILD_INSTALL "Build install" ${IMAGEINFO_IS_MASTER_PROJECT})
+
+add_library(imageinfo INTERFACE)
+add_library(imageinfo::imageinfo ALIAS imageinfo)
+
+include(GNUInstallDirs)
+
+target_include_directories(imageinfo INTERFACE
+        "$<BUILD_INTERFACE:${CMAKE_CURRENT_LIST_DIR}/include>"
+        "$<INSTALL_INTERFACE:${CMAKE_INSTALL_INCLUDEDIR}>"
+)
+
+if (IMAGEINFO_BUILD_TOOLS)
+    add_executable(imageinfo_cli cli/main.cpp)
+    target_link_libraries(imageinfo_cli PRIVATE imageinfo)
+    set_target_properties(imageinfo_cli PROPERTIES OUTPUT_NAME "imageinfo")
+endif ()
+
+if (IMAGEINFO_BUILD_TESTS)
+    enable_testing()
+
+    add_executable(imageinfo_tests tests/tests.cpp)
+    target_link_libraries(imageinfo_tests PRIVATE imageinfo)
+    target_compile_definitions(imageinfo_tests PRIVATE
+            -DIMAGES_DIR="${CMAKE_CURRENT_SOURCE_DIR}/images/"
+    )
+    add_test(NAME imageinfo_tests COMMAND imageinfo_tests)
+
+    if (CMAKE_CONFIGURATION_TYPES)
+        add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND}
+                --force-new-ctest-process --output-on-failure
+                --build-config "$<CONFIGURATION>")
+    else ()
+        add_custom_target(check COMMAND ${CMAKE_CTEST_COMMAND}
+                --force-new-ctest-process --output-on-failure)
+    endif ()
+endif ()
+
+if (IMAGEINFO_BUILD_INSTALL)
+    install(TARGETS imageinfo EXPORT imageinfo)
+    install(
+            FILES "${CMAKE_CURRENT_SOURCE_DIR}/include/imageinfo.hpp"
+            DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
+    )
+    install(
+            EXPORT imageinfo
+            FILE imageinfo-config.cmake
+            DESTINATION "${CMAKE_INSTALL_DATAROOTDIR}/imageinfo"
+            NAMESPACE imageinfo::
+    )
+    if (IMAGEINFO_BUILD_TOOLS)
+        install(TARGETS imageinfo_cli)
+    endif ()
+endif ()
+
+if (IMAGEINFO_IS_MASTER_PROJECT)
+    find_program(CLANG_FORMAT clang-format)
+    if (CLANG_FORMAT)
+        set(ALL_SOURCES include/imageinfo.hpp cli/main.cpp tests/tests.cpp)
+        add_custom_target(
+                format
+                COMMAND "${CLANG_FORMAT}" -i -verbose ${ALL_SOURCES}
+                WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+        )
+        add_custom_target(
+                check-format
+                COMMAND "${CLANG_FORMAT}" --dry-run --Werror ${ALL_SOURCES}
+                WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+        )
+    endif ()
+endif ()

LICENSE

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+MIT License
+
+Copyright (c) 2021 xiaozhuai
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.