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|
# CMakeRC is a third-party utility.
# https://github.com/vector-of-bool/cmrc
#
# MIT License
#
# Copyright (c) 2017 vector-of-bool <vectorofbool@gmail.com>
#
# 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.
# This block is executed when generating an intermediate resource file, not when
# running in CMake configure mode
if(_CMRC_GENERATE_MODE)
# Read in the digits
file(READ "${INPUT_FILE}" bytes HEX)
# Format each pair into a character literal. Heuristics seem to favor doing
# the conversion in groups of five for fastest conversion
string(REGEX REPLACE "(..)(..)(..)(..)(..)" "'\\\\x\\1','\\\\x\\2','\\\\x\\3','\\\\x\\4','\\\\x\\5'," chars "${bytes}")
# Since we did this in groups, we have some leftovers to clean up
string(LENGTH "${bytes}" n_bytes2)
math(EXPR n_bytes "${n_bytes2} / 2")
math(EXPR remainder "${n_bytes} % 5") # <-- '5' is the grouping count from above
set(cleanup_re "$")
set(cleanup_sub )
while(remainder)
set(cleanup_re "(..)${cleanup_re}")
set(cleanup_sub "'\\\\x\\${remainder}',${cleanup_sub}")
math(EXPR remainder "${remainder} - 1")
endwhile()
if(NOT cleanup_re STREQUAL "$")
string(REGEX REPLACE "${cleanup_re}" "${cleanup_sub}" chars "${chars}")
endif()
string(CONFIGURE [[
namespace { const char file_array[] = { @chars@ 0 }; }
namespace cmrc { namespace @NAMESPACE@ { namespace res_chars {
extern const char* const @SYMBOL@_begin = file_array;
extern const char* const @SYMBOL@_end = file_array + @n_bytes@;
}}}
]] code)
file(WRITE "${OUTPUT_FILE}" "${code}")
# Exit from the script. Nothing else needs to be processed
return()
endif()
set(_version 2.0.0)
cmake_minimum_required(VERSION 3.3)
include(CMakeParseArguments)
if(COMMAND cmrc_add_resource_library)
if(NOT DEFINED _CMRC_VERSION OR NOT (_version STREQUAL _CMRC_VERSION))
message(WARNING "More than one CMakeRC version has been included in this project.")
endif()
# CMakeRC has already been included! Don't do anything
return()
endif()
set(_CMRC_VERSION "${_version}" CACHE INTERNAL "CMakeRC version. Used for checking for conflicts")
set(_CMRC_SCRIPT "${CMAKE_CURRENT_LIST_FILE}" CACHE INTERNAL "Path to CMakeRC script")
function(_cmrc_normalize_path var)
set(path "${${var}}")
file(TO_CMAKE_PATH "${path}" path)
while(path MATCHES "//")
string(REPLACE "//" "/" path "${path}")
endwhile()
string(REGEX REPLACE "/+$" "" path "${path}")
set("${var}" "${path}" PARENT_SCOPE)
endfunction()
get_filename_component(_inc_dir "${CMAKE_BINARY_DIR}/_cmrc/include" ABSOLUTE)
set(CMRC_INCLUDE_DIR "${_inc_dir}" CACHE INTERNAL "Directory for CMakeRC include files")
# Let's generate the primary include file
file(MAKE_DIRECTORY "${CMRC_INCLUDE_DIR}/cmrc")
set(hpp_content [==[
#ifndef CMRC_CMRC_HPP_INCLUDED
#define CMRC_CMRC_HPP_INCLUDED
#include <cassert>
#include <functional>
#include <iterator>
#include <list>
#include <map>
#include <mutex>
#include <string>
#include <system_error>
#include <type_traits>
namespace cmrc { namespace detail { struct dummy; } }
#define CMRC_DECLARE(libid) \
namespace cmrc { namespace detail { \
struct dummy; \
static_assert(std::is_same<dummy, ::cmrc::detail::dummy>::value, "CMRC_DECLARE() must only appear at the global namespace"); \
} } \
namespace cmrc { namespace libid { \
cmrc::embedded_filesystem get_filesystem(); \
} } static_assert(true, "")
namespace cmrc {
class file {
const char* _begin = nullptr;
const char* _end = nullptr;
public:
using iterator = const char*;
using const_iterator = iterator;
iterator begin() const noexcept { return _begin; }
iterator cbegin() const noexcept { return _begin; }
iterator end() const noexcept { return _end; }
iterator cend() const noexcept { return _end; }
std::size_t size() const { return std::distance(begin(), end()); }
file() = default;
file(iterator beg, iterator end) noexcept : _begin(beg), _end(end) {}
};
class directory_entry;
namespace detail {
class directory;
class file_data;
class file_or_directory {
union _data_t {
class file_data* file_data;
class directory* directory;
} _data;
bool _is_file = true;
public:
explicit file_or_directory(file_data& f) {
_data.file_data = &f;
}
explicit file_or_directory(directory& d) {
_data.directory = &d;
_is_file = false;
}
bool is_file() const noexcept {
return _is_file;
}
bool is_directory() const noexcept {
return !is_file();
}
const directory& as_directory() const noexcept {
assert(!is_file());
return *_data.directory;
}
const file_data& as_file() const noexcept {
assert(is_file());
return *_data.file_data;
}
};
class file_data {
public:
const char* begin_ptr;
const char* end_ptr;
file_data(const file_data&) = delete;
file_data(const char* b, const char* e) : begin_ptr(b), end_ptr(e) {}
};
inline std::pair<std::string, std::string> split_path(const std::string& path) {
auto first_sep = path.find("/");
if (first_sep == path.npos) {
return std::make_pair(path, "");
} else {
return std::make_pair(path.substr(0, first_sep), path.substr(first_sep + 1));
}
}
struct created_subdirectory {
class directory& directory;
class file_or_directory& index_entry;
};
class directory {
std::list<file_data> _files;
std::list<directory> _dirs;
std::map<std::string, file_or_directory> _index;
using base_iterator = std::map<std::string, file_or_directory>::const_iterator;
public:
directory() = default;
directory(const directory&) = delete;
created_subdirectory add_subdir(std::string name) & {
_dirs.emplace_back();
auto& back = _dirs.back();
auto& fod = _index.emplace(name, file_or_directory{back}).first->second;
return created_subdirectory{back, fod};
}
file_or_directory* add_file(std::string name, const char* begin, const char* end) & {
assert(_index.find(name) == _index.end());
_files.emplace_back(begin, end);
return &_index.emplace(name, file_or_directory{_files.back()}).first->second;
}
const file_or_directory* get(const std::string& path) const {
auto pair = split_path(path);
auto child = _index.find(pair.first);
if (child == _index.end()) {
return nullptr;
}
auto& entry = child->second;
if (pair.second.empty()) {
// We're at the end of the path
return &entry;
}
if (entry.is_file()) {
// We can't traverse into a file. Stop.
return nullptr;
}
// Keep going down
return entry.as_directory().get(pair.second);
}
class iterator {
base_iterator _base_iter;
base_iterator _end_iter;
public:
using value_type = directory_entry;
using difference_type = std::ptrdiff_t;
using pointer = const value_type*;
using reference = const value_type&;
using iterator_category = std::input_iterator_tag;
iterator() = default;
explicit iterator(base_iterator iter, base_iterator end) : _base_iter(iter), _end_iter(end) {}
iterator begin() const noexcept {
return *this;
}
iterator end() const noexcept {
return iterator(_end_iter, _end_iter);
}
inline value_type operator*() const noexcept;
bool operator==(const iterator& rhs) const noexcept {
return _base_iter == rhs._base_iter;
}
bool operator!=(const iterator& rhs) const noexcept {
return !(*this == rhs);
}
iterator operator++() noexcept {
auto cp = *this;
++_base_iter;
return cp;
}
iterator& operator++(int) noexcept {
++_base_iter;
return *this;
}
};
using const_iterator = iterator;
iterator begin() const noexcept {
return iterator(_index.begin(), _index.end());
}
iterator end() const noexcept {
return iterator();
}
};
inline std::string normalize_path(std::string path) {
while (path.find("/") == 0) {
path.erase(path.begin());
}
while (!path.empty() && (path.rfind("/") == path.size() - 1)) {
path.pop_back();
}
auto off = path.npos;
while ((off = path.find("//")) != path.npos) {
path.erase(path.begin() + off);
}
return path;
}
using index_type = std::map<std::string, const cmrc::detail::file_or_directory*>;
} // detail
class directory_entry {
std::string _fname;
const detail::file_or_directory* _item;
public:
directory_entry() = delete;
explicit directory_entry(std::string filename, const detail::file_or_directory& item)
: _fname(filename)
, _item(&item)
{}
const std::string& filename() const & {
return _fname;
}
std::string filename() const && {
return std::move(_fname);
}
bool is_file() const {
return _item->is_file();
}
bool is_directory() const {
return _item->is_directory();
}
};
directory_entry detail::directory::iterator::operator*() const noexcept {
assert(begin() != end());
return directory_entry(_base_iter->first, _base_iter->second);
}
using directory_iterator = detail::directory::iterator;
class embedded_filesystem {
// Never-null:
const cmrc::detail::index_type* _index;
const detail::file_or_directory* _get(std::string path) const {
path = detail::normalize_path(path);
auto found = _index->find(path);
if (found == _index->end()) {
return nullptr;
} else {
return found->second;
}
}
public:
explicit embedded_filesystem(const detail::index_type& index)
: _index(&index)
{}
file open(const std::string& path) const {
auto entry_ptr = _get(path);
if (!entry_ptr || !entry_ptr->is_file()) {
throw std::system_error(make_error_code(std::errc::no_such_file_or_directory), path);
}
auto& dat = entry_ptr->as_file();
return file{dat.begin_ptr, dat.end_ptr};
}
bool is_file(const std::string& path) const noexcept {
auto entry_ptr = _get(path);
return entry_ptr && entry_ptr->is_file();
}
bool is_directory(const std::string& path) const noexcept {
auto entry_ptr = _get(path);
return entry_ptr && entry_ptr->is_directory();
}
bool exists(const std::string& path) const noexcept {
return !!_get(path);
}
directory_iterator iterate_directory(const std::string& path) const {
auto entry_ptr = _get(path);
if (!entry_ptr) {
throw std::system_error(make_error_code(std::errc::no_such_file_or_directory), path);
}
if (!entry_ptr->is_directory()) {
throw std::system_error(make_error_code(std::errc::not_a_directory), path);
}
return entry_ptr->as_directory().begin();
}
};
}
#endif // CMRC_CMRC_HPP_INCLUDED
]==])
set(cmrc_hpp "${CMRC_INCLUDE_DIR}/cmrc/cmrc.hpp" CACHE INTERNAL "")
set(_generate 1)
if(EXISTS "${cmrc_hpp}")
file(READ "${cmrc_hpp}" _current)
if(_current STREQUAL hpp_content)
set(_generate 0)
endif()
endif()
file(GENERATE OUTPUT "${cmrc_hpp}" CONTENT "${hpp_content}" CONDITION ${_generate})
add_library(cmrc-base INTERFACE)
target_include_directories(cmrc-base INTERFACE "${CMRC_INCLUDE_DIR}")
# Signal a basic C++11 feature to require C++11.
target_compile_features(cmrc-base INTERFACE cxx_nullptr)
set_property(TARGET cmrc-base PROPERTY INTERFACE_CXX_EXTENSIONS OFF)
add_library(cmrc::base ALIAS cmrc-base)
function(cmrc_add_resource_library name)
set(args ALIAS NAMESPACE)
cmake_parse_arguments(ARG "" "${args}" "" "${ARGN}")
# Generate the identifier for the resource library's namespace
set(ns_re "[a-zA-Z_][a-zA-Z0-9_]*")
if(NOT DEFINED ARG_NAMESPACE)
# Check that the library name is also a valid namespace
if(NOT name MATCHES "${ns_re}")
message(SEND_ERROR "Library name is not a valid namespace. Specify the NAMESPACE argument")
endif()
set(ARG_NAMESPACE "${name}")
else()
if(NOT ARG_NAMESPACE MATCHES "${ns_re}")
message(SEND_ERROR "NAMESPACE for ${name} is not a valid C++ namespace identifier (${ARG_NAMESPACE})")
endif()
endif()
set(libname "${name}")
# Generate a library with the compiled in character arrays.
string(CONFIGURE [=[
#include <cmrc/cmrc.hpp>
#include <map>
#include <utility>
namespace cmrc {
namespace @ARG_NAMESPACE@ {
namespace res_chars {
// These are the files which are available in this resource library
$<JOIN:$<TARGET_PROPERTY:@libname@,CMRC_EXTERN_DECLS>,
>
}
namespace {
const cmrc::detail::index_type&
get_root_index() {
static cmrc::detail::directory root_directory_;
static cmrc::detail::file_or_directory root_directory_fod{root_directory_};
static cmrc::detail::index_type root_index;
root_index.emplace("", &root_directory_fod);
struct dir_inl {
class cmrc::detail::directory& directory;
};
dir_inl root_directory_dir{root_directory_};
(void)root_directory_dir;
$<JOIN:$<TARGET_PROPERTY:@libname@,CMRC_MAKE_DIRS>,
>
$<JOIN:$<TARGET_PROPERTY:@libname@,CMRC_MAKE_FILES>,
>
return root_index;
}
}
cmrc::embedded_filesystem get_filesystem() {
static auto& index = get_root_index();
return cmrc::embedded_filesystem{index};
}
} // @ARG_NAMESPACE@
} // cmrc
]=] cpp_content @ONLY)
get_filename_component(libdir "${CMAKE_CURRENT_BINARY_DIR}/__cmrc_${name}" ABSOLUTE)
get_filename_component(lib_tmp_cpp "${libdir}/lib_.cpp" ABSOLUTE)
string(REPLACE "\n " "\n" cpp_content "${cpp_content}")
file(GENERATE OUTPUT "${lib_tmp_cpp}" CONTENT "${cpp_content}")
get_filename_component(libcpp "${libdir}/lib.cpp" ABSOLUTE)
add_custom_command(OUTPUT "${libcpp}"
DEPENDS "${lib_tmp_cpp}" "${cmrc_hpp}"
COMMAND ${CMAKE_COMMAND} -E copy_if_different "${lib_tmp_cpp}" "${libcpp}"
COMMENT "Generating ${name} resource loader"
)
# Generate the actual static library. Each source file is just a single file
# with a character array compiled in containing the contents of the
# corresponding resource file.
add_library(${name} STATIC ${libcpp})
set_property(TARGET ${name} PROPERTY CMRC_LIBDIR "${libdir}")
set_property(TARGET ${name} PROPERTY CMRC_NAMESPACE "${ARG_NAMESPACE}")
target_link_libraries(${name} PUBLIC cmrc::base)
set_property(TARGET ${name} PROPERTY CMRC_IS_RESOURCE_LIBRARY TRUE)
set_property(TARGET ${name} PROPERTY POSITION_INDEPENDENT_CODE ON)
if(ARG_ALIAS)
add_library("${ARG_ALIAS}" ALIAS ${name})
endif()
cmrc_add_resources(${name} ${ARG_UNPARSED_ARGUMENTS})
endfunction()
function(_cmrc_register_dirs name dirpath)
if(dirpath STREQUAL "")
return()
endif()
# Skip this dir if we have already registered it
get_target_property(registered "${name}" _CMRC_REGISTERED_DIRS)
if(dirpath IN_LIST registered)
return()
endif()
# Register the parent directory first
get_filename_component(parent "${dirpath}" DIRECTORY)
if(NOT parent STREQUAL "")
_cmrc_register_dirs("${name}" "${parent}")
endif()
# Now generate the registration
set_property(TARGET "${name}" APPEND PROPERTY _CMRC_REGISTERED_DIRS "${dirpath}")
_cm_encode_fpath(sym "${dirpath}")
if(parent STREQUAL "")
set(parent_sym root_directory)
else()
_cm_encode_fpath(parent_sym "${parent}")
endif()
get_filename_component(leaf "${dirpath}" NAME)
set_property(
TARGET "${name}"
APPEND PROPERTY CMRC_MAKE_DIRS
"static auto ${sym}_dir = ${parent_sym}_dir.directory.add_subdir(\"${leaf}\")\;"
"root_index.emplace(\"${dirpath}\", &${sym}_dir.index_entry)\;"
)
endfunction()
function(cmrc_add_resources name)
get_target_property(is_reslib ${name} CMRC_IS_RESOURCE_LIBRARY)
if(NOT TARGET ${name} OR NOT is_reslib)
message(SEND_ERROR "cmrc_add_resources called on target '${name}' which is not an existing resource library")
return()
endif()
set(options)
set(args WHENCE PREFIX)
set(list_args)
cmake_parse_arguments(ARG "${options}" "${args}" "${list_args}" "${ARGN}")
if(NOT ARG_WHENCE)
set(ARG_WHENCE ${CMAKE_CURRENT_SOURCE_DIR})
endif()
_cmrc_normalize_path(ARG_WHENCE)
get_filename_component(ARG_WHENCE "${ARG_WHENCE}" ABSOLUTE)
# Generate the identifier for the resource library's namespace
get_target_property(lib_ns "${name}" CMRC_NAMESPACE)
get_target_property(libdir ${name} CMRC_LIBDIR)
get_target_property(target_dir ${name} SOURCE_DIR)
file(RELATIVE_PATH reldir "${target_dir}" "${CMAKE_CURRENT_SOURCE_DIR}")
if(reldir MATCHES "^\\.\\.")
message(SEND_ERROR "Cannot call cmrc_add_resources in a parent directory from the resource library target")
return()
endif()
foreach(input IN LISTS ARG_UNPARSED_ARGUMENTS)
_cmrc_normalize_path(input)
get_filename_component(abs_in "${input}" ABSOLUTE)
# Generate a filename based on the input filename that we can put in
# the intermediate directory.
file(RELATIVE_PATH relpath "${ARG_WHENCE}" "${abs_in}")
if(relpath MATCHES "^\\.\\.")
# For now we just error on files that exist outside of the soure dir.
message(SEND_ERROR "Cannot add file '${input}': File must be in a subdirectory of ${ARG_WHENCE}")
continue()
endif()
if(DEFINED ARG_PREFIX)
_cmrc_normalize_path(ARG_PREFIX)
endif()
if(ARG_PREFIX AND NOT ARG_PREFIX MATCHES "/$")
set(ARG_PREFIX "${ARG_PREFIX}/")
endif()
get_filename_component(dirpath "${ARG_PREFIX}${relpath}" DIRECTORY)
_cmrc_register_dirs("${name}" "${dirpath}")
get_filename_component(abs_out "${libdir}/intermediate/${relpath}.cpp" ABSOLUTE)
# Generate a symbol name relpath the file's character array
_cm_encode_fpath(sym "${relpath}")
# Get the symbol name for the parent directory
if(dirpath STREQUAL "")
set(parent_sym root_directory)
else()
_cm_encode_fpath(parent_sym "${dirpath}")
endif()
# Generate the rule for the intermediate source file
_cmrc_generate_intermediate_cpp(${lib_ns} ${sym} "${abs_out}" "${abs_in}")
target_sources(${name} PRIVATE "${abs_out}")
set_property(TARGET ${name} APPEND PROPERTY CMRC_EXTERN_DECLS
"// Pointers to ${input}"
"extern const char* const ${sym}_begin\;"
"extern const char* const ${sym}_end\;"
)
get_filename_component(leaf "${relpath}" NAME)
set_property(
TARGET ${name}
APPEND PROPERTY CMRC_MAKE_FILES
"root_index.emplace("
" \"${ARG_PREFIX}${relpath}\","
" ${parent_sym}_dir.directory.add_file("
" \"${leaf}\","
" res_chars::${sym}_begin,"
" res_chars::${sym}_end"
" )"
")\;"
)
endforeach()
endfunction()
function(_cmrc_generate_intermediate_cpp lib_ns symbol outfile infile)
add_custom_command(
# This is the file we will generate
OUTPUT "${outfile}"
# These are the primary files that affect the output
DEPENDS "${infile}" "${_CMRC_SCRIPT}"
COMMAND
"${CMAKE_COMMAND}"
-D_CMRC_GENERATE_MODE=TRUE
-DNAMESPACE=${lib_ns}
-DSYMBOL=${symbol}
"-DINPUT_FILE=${infile}"
"-DOUTPUT_FILE=${outfile}"
-P "${_CMRC_SCRIPT}"
COMMENT "Generating intermediate file for ${infile}"
)
endfunction()
function(_cm_encode_fpath var fpath)
string(MAKE_C_IDENTIFIER "${fpath}" ident)
string(MD5 hash "${fpath}")
string(SUBSTRING "${hash}" 0 4 hash)
set(${var} f_${hash}_${ident} PARENT_SCOPE)
endfunction()
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