# Copyright (c) 2018 Stefan Seefeld

# All rights reserved.

#

# Distributed under the Boost Software License, Version 1.0.

# (See accompanying file LICENSE_1_0.txt or copy at

# http://www.boost.org/LICENSE_1_0.txt)

import option ;

import regex ;

import python ;

#

# The `version-suffix` rule really belongs into python.jam, and

# should be moved there. `split-version` is only duplicated here

# as a prerequisite. (See https://github.com/boostorg/build/pull/290)

#

# Validate the version string and extract the major/minor part we care about.

#

local rule split-version ( version )

{

local major-minor = [ MATCH "^([0-9]+)\.([0-9]+)(.*)$" : $(version) : 1 2 3 ] ;

if ! $(major-minor[2]) || $(major-minor[3])

{

ECHO "Warning: \"using python\" expects a two part (major, minor) version number; got" $(version) instead ;

# Add a zero to account for the missing digit if necessary.

major-minor += 0 ;

}

return $(major-minor[1]) $(major-minor[2]) ;

}

# Define a version suffix for libraries depending on Python.

# For example, Boost.Python built for Python 2.7 uses the suffix "27"

rule version-suffix ( version )

{

local major-minor = [ split-version $(version) ] ;

local suffix = $(major-minor:J="") ;

return $(suffix) ;

}

# Python build id (for Python libraries only).

python-id = [ option.get "python-buildid" ] ;

if $(python-id)

{

PYTHON_ID = [ regex.replace $(python-id) "[*\\/:.\"\']" _ ] ;

}

rule python-tag ( name : type ? : property-set )

{

local result = $(name) ;

if $(type) in STATIC_LIB SHARED_LIB IMPORT_LIB

{

local version = [ $(property-set).get <python> ] ;

local lib-suffix = [ version-suffix $(version) ] ;

result = $(result)$(lib-suffix) ;

}

if $(type) in STATIC_LIB SHARED_LIB IMPORT_LIB && $(PYTHON_ID)

{

result = $(result)-$(PYTHON_ID) ;

}

# forward to the boost tagging rule

return [ tag $(result) : $(type) : $(property-set) ] ;

}