# Copyright (c) 2002 Douglas Gregor <doug.gregor -at- gmail.com>
# Copyright (c) 2016-2018 Rene Rivera
#
# 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)

project boost/doc
    : requirements
    <xsl:param>boost.libraries=../../libs/libraries.htm
    <format>html:<xsl:param>chunker.output.doctype-public="-//W3C//DTD HTML 4.01 Transitional//EN"
    <format>html:<xsl:param>chunker.output.doctype-system="http://www.w3.org/TR/html4/loose.dtd"
    ;

import boostbook : boostbook ;
import project ;
import targets ;
import print ;
import type ;
import generators ;
import sequence ;
import path ;
import "class" : is-a ;
import regex ;

path-constant BOOST_DOC : . ;

local lib-docs = [ path.glob [ path.glob $(BOOST_DOC)/../libs $(BOOST_DOC)/../tools : */doc ]
    : [ modules.peek project : JAMFILE ] ] ;

local rule find-target-of-class-or-type ( root-target : klass ? : type ? )
{
    local result ;
    if ! $(result) && $(klass) && [ is-a $(root-target) : $(klass) ]
    {
        result ?= $(root-target) $(klass) ;
    }
    if ! $(result) && $(type) && $(type:U) = [ modules.peek $(root-target) : self.type ]
    {
        result ?= $(root-target) $(type:U) ;
    }
    local alternatives = [ modules.peek $(root-target) : self.alternatives ] ;
    if ! $(result)
    {
        for local alternative in $(alternatives)
        {
            if $(result) { break ; }
            result ?= [ find-target-of-class-or-type $(alternative) : $(klass) : $(type) ] ;
        }
    }
    if ! $(result)
    {
        for local alternative in $(alternatives)
        {
            if $(result) { break ; }
            local sources = [ modules.peek $(alternative) : self.sources ] ;
            for local source in [ $(alternative).sources ]
            {
                if $(result) { break ; }
                result ?= [ find-target-of-class-or-type $(source) : $(klass) : $(type) ] ;
            }
        }
    }
    return $(result) ;
}

local rule docbook-target-spec ( main-target )
{
    local spec ;
    local doc-sub-target
        = [ find-target-of-class-or-type $(main-target) : boostbook-target-class : XML ] ;
    if $(doc-sub-target)
    {
        #ECHO *** $(main-target) ;
        #ECHO " ::" [ $(main-target).full-name ] ;
        #ECHO " ::" $(doc-sub-target) :: [ $(doc-sub-target[0]).full-name ] ;
        local full-name = [ $(doc-sub-target[0]).full-name ] ;
        local target-path = $(full-name:D) ;
        local target-name = $(full-name:B) ;
        local this-path = [ path.root [ project.attribute $(__name__) location ] [ path.pwd ] ] ;
        target-path = [ path.relative-to $(this-path) $(target-path) ] ;
        #ECHO " ::" $(target-path) :: $(target-name) ;
        spec = $(target-path)//$(target-name) ;
    }
    return $(spec) ;
}

local exclude-libs = [ MATCH "^--exclude-libraries=(.*)" : [ modules.peek : ARGV ] ] ;
exclude-libs = [ regex.split-list $(exclude-libs) : "," ] ;

#ECHO "=== --exclude-libraries:" $(exclude-libs) ;

local lib-doc-boostdoc-refs ;
local lib-doc-boostrelease-refs ;

local this-path = [ path.root [ project.attribute $(__name__) location ] [ path.pwd ] ] ;
for local lib-doc in $(lib-docs)
{
    #ECHO === $(lib-doc) ... ;
    local doc-project = $(lib-doc:D) ;

    local lib-dir = $(doc-project:D) ;
    local lib-name = $(lib-dir:BS) ;

    #ECHO "=== lib-name:" $(lib-name) ... ;

    if $(lib-name) in $(exclude-libs)
    {
        ECHO "-- Excluded library" '$(lib-name)' ;
    }
    else
    {
        local doc-module = [ project.find $(doc-project)
            : [ project.attribute $(__name__) location ] ] ;
        local doc-target = [ project.target $(doc-module) ] ;
        $(doc-target).build-main-targets ;
        local boostrelease-target = [ $(doc-target).main-target boostrelease ] ;
        if $(boostrelease-target)
        {
            local full-name = [ $(boostrelease-target).full-name ] ;
            local target-path = [ path.relative-to $(this-path) $(full-name:D) ] ;
            lib-doc-boostrelease-refs += $(target-path)//boostrelease ;
            #ECHO "  ::" $(target-path)//boostrelease ;
        }
        local boostdoc-target = [ $(doc-target).main-target boostdoc ] ;
        if $(boostdoc-target)
        {
            local full-name = [ $(boostdoc-target).full-name ] ;
            local target-path = [ path.relative-to $(this-path) $(full-name:D) ] ;
            lib-doc-boostdoc-refs += $(target-path)//boostdoc ;
            #ECHO "  ::" $(target-path)//boostdoc ;
        }
    }
}

# Build non-integrated library docs for release.
if "--release-build" in [ modules.peek : ARGV ]
{
    alias release-build : $(lib-doc-boostrelease-refs) ;
}

local rule component-order ( x y )
{
    local a = [ MATCH "(/libs/[^/]+)" "(/tools/[^/]+)" : $(x:G) $(x:G=) ] ;
    local b = [ MATCH "(/libs/[^/]+)" "(/tools/[^/]+)" : $(y:G) $(y:G=) ] ;
    if $(a[1]) < $(b[1])
    {
        return true ;
    }
    else if $(a[1]) = $(b[1]) && $(x) < $(y)
    {
        return true ;
    }
}

rule xinclude-generator ( target : sources * : properties * )
{
    print.output $(target) ;
    local includes ;
    sources = [ sequence.insertion-sort $(sources) : component-order ] ;
    locate = [ path.root [ on $(target) return $(LOCATE) ] [ path.pwd ] ] ;
    for local xml in $(sources)
    {
        local dir ;
        dir ?= [ on $(xml) return $(LOCATE) ] ;
        dir ?= [ on $(xml) return $(SEARCH) ] ;
        dir ?= "" ;
        dir = [ path.root $(dir[1]) [ path.pwd ] ] ;
        dir = [ path.relative-to $(locate) $(dir) ] ;
        includes += "<xi:include href=\"$(dir[1])/$(xml:G=)\"/>" ;
    }
    print.text
        "<?xml version=\"1.0\" encoding=\"utf-8\"?>"
        "<xml xmlns:xi=\"http://www.w3.org/2003/XInclude\">"
        $(includes)
        "</xml>"
        : overwrite ;
}
type.register XINCLUDE_XML : xinclude : XML ;
generators.register-composing $(__name__).xinclude-generator : XML : XINCLUDE_XML ;

rule xinclude ( name : sources * : requirements * : default-build * : usage-requirements *  )
{
    targets.create-typed-target XINCLUDE_XML
        : [ project.current ]
        : $(name)
        : $(sources)
        : $(requirements)
        : $(default-build)
        : $(usage-requirements)
        ;
}

xinclude libraries :
    $(lib-doc-boostdoc-refs)
    ;
explicit libraries ;

xinclude tools :
    ../tools/quickbook/doc//quickbook
    ../tools/boostbook/doc//boostbook
    ;
explicit tools ;

boostbook doc
    :
    src/boost.xml
    :
    <xsl:param>generate.consistent.ids=1
    <use>$(lib-doc-boostdoc-refs)
    <dependency>libraries
    <implicit-dependency>libraries
    <dependency>tools
    <implicit-dependency>tools

    <dependency>images
    <dependency>callouts
    <xsl:path>$(BOOST_DOC)
    ;

install images : [ glob src/images/*.png ] : <location>html/images ;
explicit images ;
install callouts : [ glob src/images/callouts/*.png ] : <location>html/images/callouts ;
explicit callouts ;
