# Copyright 2003 John Maddock
# Copyright 2010 Artyom Beilis
# Copyright 2021 - 2024 Alexander Grund
#
# Distributed under the Boost Software License, Version 1.0.
# https://www.boost.org/LICENSE_1_0.txt.

import-search /boost/config/checks ;
import config : requires ;
import configure ;
import errors ;
import os ;
import path ;
import toolset ;

path-constant TOP : .. ;

constant boost_dependencies_private :
    /boost/charconv//boost_charconv
    /boost/predef//boost_predef
    /boost/thread//boost_thread
    ;

project : source-location $(TOP)/src ;

local rule debug-message ( message * )
{
    if --debug-configuration in [ modules.peek : ARGV ]
    {
        ECHO "notice:" "[locale]" $(message) ;
    }
}

# Configuration of libraries

## iconv
# Iconv support may be builtin (i.e. in libc)

exe has_iconv : $(TOP)/build/has_iconv.cpp ;
explicit has_iconv ;

ICONV_PATH = [ modules.peek : ICONV_PATH ] ;

# There may also be an external iconv library
searched-lib iconv :
  : <search>$(ICONV_PATH)/lib <link>shared <runtime-link>shared
  : : <include>$(ICONV_PATH)/include
  ;

explicit iconv ;

# Separate pair of obj & exe rules so the CPP file is built with the iconv include path
obj has_external_iconv_obj : $(TOP)/build/has_iconv.cpp iconv ;
exe has_external_iconv : has_external_iconv_obj iconv ;
explicit has_external_iconv ;

exe accepts_shared_option   : $(TOP)/build/option.cpp
                            :   <cxxflags>-shared-libstdc++
                                <cxxflags>-shared-libgcc
                                <linkflags>-shared-libstdc++
                                <linkflags>-shared-libgcc
                            ;

# Xlocale

exe has_xlocale : $(TOP)/build/has_xlocale.cpp ;
explicit has_xlocale ;

#end xlocale

if [ modules.peek : ICU_LINK ]
{
    errors.user-error : "The ICU_LINK option is no longer supported by the Boost.Locale build - please refer to the documentation for equivalent options" ;
}

if [ modules.peek : ICU_LINK_LOCALE ]
{
    errors.user-error : "The ICU_LINK_LOCALE option is no longer supported by the Boost.Locale build - please refer to the documentation for equivalent options" ;
}

# Specify the root path to the installed ICU libraries via
#   - Environment variable: ICU_PATH
#   - `b2 .. -s ICU_PATH=x`
#   - In project-config.jam as `path-constant ICU_PATH : x ;

.icu-path = [ modules.peek : ICU_PATH ] ; # -sICU_PATH=x or env variable
.icu-path ?= $(ICU_PATH) ;                # path-constant

if $(.icu-path)
{
    .icu-path = [ path.make $(.icu-path) ] ; # Normalize
    debug-message ICU path set to "$(.icu-path)" ;
}

rule icu_search_paths ( properties * )
{
    local result ;
    if <address-model>64 in $(properties) && <toolset>msvc in $(properties)
    {
        debug-message Search 64 bit ICU in "$(.icu-path)/lib64" ;
        result = <search>$(.icu-path)/bin64 <search>$(.icu-path)/lib64 ;
    }
    else
    {
        debug-message Search ICU in "$(.icu-path)/lib" ;
        result = <search>$(.icu-path)/bin <search>$(.icu-path)/lib ;
    }
    return $(result) ;
}

if [ modules.peek : ICU_ICUUC_NAME ]
{
   ICU_ICUUC_NAME =  [ modules.peek : ICU_ICUUC_NAME ] ;
}
if [ modules.peek : ICU_ICUDT_NAME ]
{
   ICU_ICUDT_NAME =  [ modules.peek : ICU_ICUDT_NAME ] ;
}
if [ modules.peek : ICU_ICUIN_NAME ]
{
   ICU_ICUIN_NAME =  [ modules.peek : ICU_ICUIN_NAME ] ;
}

if $(ICU_ICUUC_NAME)
{
    searched-lib icuuc : : <name>$(ICU_ICUUC_NAME) <conditional>@icu_search_paths ;
    debug-message Using "$(ICU_ICUUC_NAME)" for library "icuuc" ;
}
else
{
    searched-lib icuuc : :                                                  <name>icuuc   <runtime-link>shared <conditional>@icu_search_paths ;
    searched-lib icuuc : : <toolset>msvc                     <variant>debug <name>icuucd  <runtime-link>shared <conditional>@icu_search_paths ;
    searched-lib icuuc : : <toolset>intel <target-os>windows <variant>debug <name>icuucd  <runtime-link>shared <conditional>@icu_search_paths ;
    searched-lib icuuc : :                                                  <name>sicuuc  <runtime-link>static <conditional>@icu_search_paths ;
    searched-lib icuuc : : <toolset>msvc                     <variant>debug <name>sicuucd <runtime-link>static <conditional>@icu_search_paths ;
    searched-lib icuuc : : <toolset>intel <target-os>windows <variant>debug <name>sicuucd <runtime-link>static <conditional>@icu_search_paths ;
    searched-lib icuuc : : <name>this_is_an_invalid_library_name ;
}

if $(ICU_ICUDT_NAME)
{
    searched-lib icudt : : <name>$(ICU_ICUDT_NAME) <conditional>@icu_search_paths ;
    debug-message Using "$(ICU_ICUDT_NAME)" for library "icudt" ;
}
else
{
    searched-lib icudt : :                                                  <name>icudata  <runtime-link>shared <conditional>@icu_search_paths ;
    searched-lib icudt : : <toolset>msvc                                    <name>icudt    <runtime-link>shared <conditional>@icu_search_paths ;
    searched-lib icudt : : <toolset>intel <target-os>windows                <name>icudt    <runtime-link>shared <conditional>@icu_search_paths ;
    searched-lib icudt : :                                                  <name>sicudata <runtime-link>static <conditional>@icu_search_paths ;
    searched-lib icudt : : <toolset>msvc                                    <name>sicudt   <runtime-link>static <conditional>@icu_search_paths ;
    searched-lib icudt : : <toolset>intel <target-os>windows                <name>sicudt   <runtime-link>static <conditional>@icu_search_paths ;
    searched-lib icudt : : <name>this_is_an_invalid_library_name ;
}

if $(ICU_ICUIN_NAME)
{
    searched-lib icuin : : <name>$(ICU_ICUIN_NAME) <conditional>@icu_search_paths ;
    debug-message Using "$(ICU_ICUIN_NAME)" for library "icuin" ;
}
else
{
    searched-lib icuin : :                                                  <name>icui18n  <runtime-link>shared <conditional>@icu_search_paths ;
    searched-lib icuin : : <toolset>msvc                     <variant>debug <name>icuind   <runtime-link>shared <conditional>@icu_search_paths ;
    searched-lib icuin : : <toolset>msvc                                    <name>icuin    <runtime-link>shared <conditional>@icu_search_paths ;
    searched-lib icuin : : <toolset>intel <target-os>windows <variant>debug <name>icuind   <runtime-link>shared <conditional>@icu_search_paths ;
    searched-lib icuin : : <toolset>intel <target-os>windows                <name>icuin    <runtime-link>shared <conditional>@icu_search_paths ;
    searched-lib icuin : :                                                  <name>sicui18n <runtime-link>static <conditional>@icu_search_paths ;
    searched-lib icuin : : <toolset>msvc                     <variant>debug <name>sicuind  <runtime-link>static <conditional>@icu_search_paths ;
    searched-lib icuin : : <toolset>msvc                                    <name>sicuin   <runtime-link>static <conditional>@icu_search_paths ;
    searched-lib icuin : : <toolset>intel <target-os>windows <variant>debug <name>sicuind  <runtime-link>static <conditional>@icu_search_paths ;
    searched-lib icuin : : <toolset>intel <target-os>windows                <name>sicuin   <runtime-link>static <conditional>@icu_search_paths ;
    searched-lib icuin : : <name>this_is_an_invalid_library_name ;
}

ICU_OPTS =
  <include>$(.icu-path)/include
  <runtime-link>shared:<library>icuuc/<link>shared
  <runtime-link>shared:<library>icudt/<link>shared
  <runtime-link>shared:<library>icuin/<link>shared
  <runtime-link>static:<library>icuuc
  <runtime-link>static:<library>icudt
  <runtime-link>static:<library>icuin
  <target-os>windows,<toolset>clang:<linkflags>"advapi32.lib"
  <runtime-link>static:<define>U_STATIC_IMPLEMENTATION=1
  ;

exe has_icu : $(TOP)/build/has_icu_test.cpp : $(ICU_OPTS) ;
explicit has_icu ;

# Separate pair of obj & exe rules so the CPP file is built with the changed include paths
obj has_iconv_with_icu_obj : $(TOP)/build/has_iconv.cpp : $(ICU_OPTS) ;
exe has_iconv_with_icu : has_external_iconv_with_icu_obj : $(ICU_OPTS) ;
explicit has_iconv_with_icu ;
obj has_external_iconv_with_icu_obj : $(TOP)/build/has_iconv.cpp iconv : $(ICU_OPTS) ;
exe has_external_iconv_with_icu : has_external_iconv_with_icu_obj iconv : $(ICU_OPTS) ;
explicit has_external_iconv_with_icu ;

# This function is called whenever the 'boost_locale' metatarget
# below is generated and figures out what external components we have,
# what the user wants, and what sources have to be compiled in the end.
rule configure-full ( properties * : flags-only )
{

    local result ;
    local flags-result ;

    if ! <boost.locale.iconv> in $(properties:G)
    {
        # The system Iconv on Solaris may have bugs, while the GNU Iconv is fine.
        # So disable it by default if on Solaris.
        if <target-os>solaris in $(properties)
        {
            properties += <boost.locale.iconv>off ;
        }
    }

    local internal_iconv_target = has_iconv ;
    local external_iconv_target = has_external_iconv ;
    local found-icu ;

    if ! <boost.locale.icu>off in $(properties)
    {
        if [ configure.builds has_icu : $(properties) : "icu" ]
        {
            found-icu = true ;
            flags-result += <define>BOOST_LOCALE_WITH_ICU=1 $(ICU_OPTS) ;

            local ICU_SOURCES =
                boundary
                codecvt
                collator
                conversion
                date_time
                formatter
                formatters_cache
                icu_backend
                numeric
                ;

            result += <source>icu/$(ICU_SOURCES).cpp
                      <library>/boost/thread//boost_thread
                      ;
            # ICU might introduce an own iconv, so check for that.
            internal_iconv_target = has_iconv_with_icu ;
            external_iconv_target = has_external_iconv_with_icu ;
        }
    }

    local found-iconv ;

    if ! <boost.locale.iconv>off in $(properties)
    {
        # See if iconv is bundled with standard library.
        if [ configure.builds $(internal_iconv_target) : $(properties) : "iconv (libc)" ]
        {
            found-iconv = true ;
        } else if [ configure.builds $(external_iconv_target) : $(properties) : "iconv (separate)" ]
        {
            found-iconv = true ;
            result += <library>iconv ;
        }
    }
    if $(found-iconv)
    {
        flags-result += <define>BOOST_LOCALE_WITH_ICONV=1 ;
    }

    if ! $(found-iconv) && ! $(found-icu) && ! <target-os>windows in $(properties) && ! <target-os>cygwin in $(properties)
    {
        ECHO "- Boost.Locale needs either iconv or ICU library to be built." ;
        result += <build>no ;
    }

    if ! <boost.locale.std> in $(properties:G)
    {
        if <toolset>sun in $(properties)
        {
            properties += <boost.locale.std>off ;
        } else
        {
            properties += <boost.locale.std>on ;
        }
    }

    if <boost.locale.std>off in $(properties)
    {
        flags-result += <define>BOOST_LOCALE_NO_STD_BACKEND=1 ;
    } else
    {
        local STD_SOURCES =
          codecvt
          collate
          converter
          numeric
          std_backend
          ;
        result += <source>std/$(STD_SOURCES).cpp ;
    }

    if ! <boost.locale.winapi> in $(properties:G)
    {
        if <target-os>windows in $(properties) || <target-os>cygwin in $(properties)
        {
            properties += <boost.locale.winapi>on ;
        } else
        {
            properties += <boost.locale.winapi>off ;
        }
    }
    if  <target-os>windows in $(properties)
        && <toolset>gcc in $(properties)
        && <link>shared in $(properties)
        && [ configure.builds accepts_shared_option : $(properties) : "g++ -shared-* supported" ]
    {
        flags-result += <cxxflags>-shared-libstdc++
                        <cxxflags>-shared-libgcc
                        <linkflags>-shared-libstdc++
                        <linkflags>-shared-libgcc
                        ;
    }

    if <boost.locale.winapi>off in $(properties)
    {
        flags-result += <define>BOOST_LOCALE_NO_WINAPI_BACKEND=1 ;
    } else
    {
        local WINAPI_SOURCES =
            collate
            converter
            numeric
            win_backend
          ;
        result += <source>win32/$(WINAPI_SOURCES).cpp ;
    }

    if ( ! <boost.locale.winapi>off in $(properties) || ! <boost.locale.std>off in $(properties) )
       && ( <target-os>windows in $(properties) || <target-os>cygwin in $(properties) )
    {
        result += <source>win32/lcid.cpp ;
    }

    if ! <boost.locale.posix> in $(properties:G)
    {
        if <target-os>linux in $(properties)
            || <target-os>darwin in $(properties)
            || ( <target-os>freebsd in $(properties) && [ configure.builds has_xlocale : $(properties) : "xlocale supported" ] )
        {
            properties += <boost.locale.posix>on ;
        } else
        {
            properties += <boost.locale.posix>off ;
        }
    }

    if <boost.locale.posix>off in $(properties)
    {
        flags-result += <define>BOOST_LOCALE_NO_POSIX_BACKEND=1 ;
    } else
    {
        local POSIX_SOURCES =
          collate
          converter
          numeric
          codecvt
          posix_backend
          ;
        result += <source>posix/$(POSIX_SOURCES).cpp ;
    }

    if <boost.locale.posix>on in $(properties) || <boost.locale.std>on in $(properties) || <boost.locale.winapi>on in $(properties)
    {
        result += <source>util/gregorian.cpp ;
    }

    if "$(flags-only)" = "flags"
    {
        return $(flags-result) ;
    } else
    {
        result += $(flags-result) ;
        return $(result) ;
    }
}

rule configure ( properties * )
{
    local result = [ configure-full $(properties) : "all" ] ;
    return $(result) ;
}

rule configure-flags ( properties * )
{
    local result = [ configure-full $(properties) : "flags" ] ;
    return $(result) ;
}

alias build_flags : : : : <conditional>@configure-flags ;

local cxx_requirements = [ requires
      cxx11_defaulted_moves
      cxx11_hdr_type_traits
      cxx11_override
    ] ;

lib boost_locale
    : sources
      encoding/codepage.cpp
      shared/date_time.cpp
      shared/format.cpp
      shared/formatting.cpp
      shared/generator.cpp
      shared/iconv_codecvt.cpp
      shared/ids.cpp
      shared/localization_backend.cpp
      shared/message.cpp
      shared/mo_lambda.cpp
      util/codecvt_converter.cpp
      util/default_locale.cpp
      util/encoding.cpp
      util/info.cpp
      util/locale_data.cpp
    : requirements
      <library>$(boost_dependencies_private)/<warnings-as-errors>off
      <library>$(boost_dependencies)/<warnings-as-errors>off
      $(cxx_requirements)
      <link>shared:<define>BOOST_LOCALE_DYN_LINK=1
      <define>BOOST_LOCALE_SOURCE
      <threading>multi
      <target-os>windows:<define>_CRT_SECURE_NO_WARNINGS
      <target-os>windows:<define>_SCL_SECURE_NO_WARNINGS
      # Meanwhile remove this
      <conditional>@configure
    : usage-requirements
      <library>$(boost_dependencies)/<warnings-as-errors>off
      $(cxx_requirements)
      <link>shared:<define>BOOST_LOCALE_DYN_LINK=1
      <define>BOOST_LOCALE_NO_LIB=1
    ;