SConscript

# -*- python -*-

# Some internal information on how the documentation is generated. All
# this is quite a mess, the complete documentation generation setup is
# in dire need of a complete redesign, but ...
# 
#
# The documentation generation process is tightly integrated with the
# scons build framework:
# 
# * SCons analyzes the Doxyfile's to find all the documentation
#   dependencies. This happens in the doxygen builder in
#   senfscons/Doxygen.py.
#
# * possibly the doclib/doxy-header.html and/or
#   doclib/doxy-footer.html files are regenerated
# 
# * If any documentation is out-of-date with respect to it's source
#   files, the documentation is regenerated.
# 
# * When building the complete documentation ('all_docs'), the
#   cross-reference page will be rebuilt if necessary (The global list
#   of 'Open Issues').
#
# * To fix some link errors, the additional 'linlint' and 'fixlinks'
#   targets are used
#
# 
# 1. Scanning the Doxyfile's
# 
# The doxygen builder scans all documentation source files which have
# the text 'doxyfile' in any case in their name. It understands
# @INCLUDE directives and will find all the dependencies of the
# documentation:
# 
# * All the source files as selected by INPUT, INPUT_PATTERN,
#   RECURSIVE and so on.
# 
# * Any referenced tag-files
# 
# * Documentation header and/or footer
# 
# * The INPUT_FILTER program
# 
# * Any included doxygen configuration files
# 
#
# 2. Regenerating header and/or footer
#
# If needed, the doxy-header.html and/or doxy-footer.html file will be
# regenerated. The dependencies are *not* complete, just adding a new
# subdirectory sadly does not automatically update the header (which
# contains the menu)
#
# The header and/or footer are written are generated from templates
# using a simple python based templating system called yaptu which is
# included in doclib/.
#
# 
# 3. Calling doxygen
# 
# The doxygen call itself is quite complex since there is some pre-
# and post-processing going on. We can separate this step into tree
# parts
#
# * Building prerequisites (e.g. images)
#
# * The processing done by the Doxygen builder
#
# * Additional processing added by the SENFSCons.Doxygen helper.
#
#
# 3.1. Building prerequisites
#
# The prerequisites are images referenced by the documentation. These
# images are mostly generated using the Dia2Png builder.
#
#
# 3.2. The main doxygen build (Doxygen builder)
#
# * doxygen proper is called
# 
# * doxygen is configured in Doxyfile.global to call
#   'doclib/filter.pl' on each source file. This filter will strip
#   excess whitespace from the beginning of lines in '\code' and
#   '<pre>' blocks. Additionally it will expand all tabs, tab width is
#   8 spaces (there should be no tabs in the source but ...)
# 
# * doxygen is configured in Doxyfile.global to call 'doclib/dot' to
#   generate the 'dot' images.
#
# * 'doclib/dot' calls 'doclib/dot-munge.pl' on the .dot
#    files. dot-munge.pl changes the font and font-size and adds
#    line-breaks to long labels
#
# * 'doclib/dot' calls the real dot binary. If the resulting image is
#   more than 800 pixels wide, dot is called again, this time using
#   the oposite rank direction (top-bottom vs. left-right). The image
#   with the smaller width is selected and returned.
#
# * after doxygen is finished, the list of referenced tag-files is
#   checked. For each tag file the directory is found, where the
#   documentation is generated (by scanning the Doxyfile which is
#   repsonsible for building the tag file). For every tag file, the
#   correct 'installdox' command is generated.
#
# * The stamp files are created
#
#
# 3.3. Postprocessing
#
# The following steps are mostly added to work around some stupid
# doxygen problems
#
# * If a tag file is generated, 'senfscons/tagmunge.xsl' is called on the
#   tag file. This XSLT stylesheet removes all namespace components
#   from the tag file. Without this task, doxygen will completely barf
#   when two different documentation parts have members in the same
#   namespace.
#
# * All html files are processed by 'doclib/html-munge.xsl'. However,
#   since the documentation generated by doxygen is completely invalid
#   html we need to preprocess the html files with a simple 'sed'
#   script and 'tidy' before 'xsltproc' even accepts the html code.
#
# * We use the generated xml output of doxygen to generate an XML
#   fragment for the global cross reference. This fragment is
#   generated by 'senfscons/xrefxtract.xslt'
#
#
# 4. Building the global cross-reference
#
# The global cross reference is built from the cross-refernce
# fragments generated for each of the documentation parts and from the
# doxy-header.html/doxy-footer.html files. This conversion is
# controlled by the 'senfscons/xrefhtml.xslt' stylesheet.
#
#
# 5. Fixing broken links
#
# After the documentation has been generated, additional calls first
# to the 'linklint' and then to the 'fixlinks' target will try to fix
# broken links generated by doxygen. First, 'linklint' will call the
# linklint tool to check for broken links in the documentation.
#
# 'fixlinks' is then called which calls 'doclib/fixlinks.py' which
# scans *all* html files, builds an index of all (unique) anchors and
# then fixes the url part of all links with correct anchor but bad
# file name.
#


Import('env')
import SENFSCons

###########################################################################

import yaptu

def modules():
    # Naja ... etwas rumgehackt aber was solls ...
    global EXTRA_MODULES
    mods = {}
    pathbase = len(env.Dir('#').abspath)+1
    for module in env.Alias('all_docs')[0].sources:
        if module.name != 'html.stamp' : continue 
        mods[module.dir.dir.dir.abspath] = [ module.dir.dir.dir.name,
                                             module.dir.abspath[pathbase:],
                                             0 ]
        
    rv = []
    keys = mods.keys()
    keys.sort()
    for mod in keys:
        i = 0
        while i < len(rv):
            if len(rv[i]) > pathbase and mod.startswith(rv[i] + '/'):
                level = mods[rv[i]][2] + 1
                i += 1
                while i < len(rv) and mods[rv[i]][2] >= level:
                    i += 1
                rv[i:i] = [ mod ]
                mods[mod][2] = level
                break
            i += 1
        if i == len(rv):
            rv.append(mod)

    for mod in keys:
        if mods[mod][2] == 0:
            mods[mod][0] = 'lib' + mods[mod][0]

    n = 0
    for name,path in EXTRA_MODULES:
        path = env.Dir(path).dir.dir.abspath
        i = 0
        while i < len(rv):
            if rv[i] == path:
                mods[rv[i]][0] = name
                m = 1
                while i+m < len(rv) and mods[rv[i+m]][2] > mods[rv[i]][2]:
                    m += 1
                rv[n:n] = rv[i:i+m]
                rv[i+m:i+2*m] = []
                i += m
                n += m
            else:
                i += 1

    return ( tuple(mods[mod]) for mod in rv )

def indices():
    ix = len(env.Dir('#').abspath)+1
    return [ doc.dir.abspath[ix:]
             for doc in env.Alias('all_docs')[0].sources
             if doc.name == "search.idx" ]

def writeTemplate(target = None, source = None, env = None):
    file(target[0].abspath,"w").write(yaptu.process(str(env['TEMPLATE']), globals(), env.Dictionary()))

writeTemplate = env.Action(writeTemplate, varlist = [ 'TEMPLATE' ])

###########################################################################

# Extra documentation modules which are handled (named) different from
# library modules
EXTRA_MODULES = [
    ('Overview', '#/doc/html'),
    ('Examples', '#/Examples/doc/html'),
    ('HowTos', '#/HowTos/doc/html'),
    ('SENFSCons', '#/senfscons/doc/html') ]

HEADER = """<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>$title</title>
<link href="@TOPDIR@/doc/html/doxygen.css" rel="stylesheet" type="text/css">
<link href="@TOPDIR@/doclib/senf.css" rel="stylesheet" type="text/css">
<link rel="shortcut icon" href="@TOPDIR@/doclib/favicon.ico">
<style type="text/css">
div.tabs li.$projectname a { background-color: #EDE497; }
</style>
</head>
<body>

<div id="head">
  <div id="title">
    <div id="title2">
      <div id="search">
        <form action="@TOPDIR@/doclib/search.php" method="get">
          Search: <input type="text" name="query" size="20" accesskey="s"/> 
        </form>
      </div>
      <h1>SENF Extensible Network Framework</h1>
    </div>
  </div>
  <div id="subtitle">
    <ul>
      <li><a href="@TOPDIR@/doc/html/index.html">Home</a></li>
      <li><a class="ext" href="ftp://ftp.berlios.de/pub/senf/">Download</a></li>
      <li><a class="ext" href="http://openfacts2.berlios.de/wikien/index.php/BerliosProject:SENF_Network_Framework">Wiki</a></li>
      <li><a class="ext" href="http://developer.berlios.de/projects/senf">BerliOS</a></li>
      <li><a class="ext" href="http://svn.berlios.de/wsvn/senf/?op=log&rev=0&sc=0&isdir=1">ChangeLog</a></li>
      <li><a class="ext" href="http://svn.berlios.de/viewcvs/senf/trunk/">Browse SVN</a></li>
      <li><a class="ext" href="http://developer.berlios.de/bugs/?group_id=7489">Bug Tracker</a></li>
      <li><a href="@TOPDIR@/doc/html/xref.html">Open Issues</a></li>
    </ul>
  </div>
</div>

<div id="content1">
  <div id="content2">
    <div class="tabs menu">
      <ul>
{{      for name, path, level in modules():
          <li class="${name} level${level}"><a href="@TOPDIR@/${path}/index.html">${name}</a></li>
}}
        <li class="glossary level0"><a href="@TOPDIR@/doc/html/glossary.html">Glossary</a></li>
      </ul>
    </div>"""

FOOTER = """<hr style="width:0px;border:none;clear:both;margin:0;padding:0" />
  </div>
</div>
<div id="footer">
  <span>
    <a href="mailto:senf-dev@lists.berlios.de">Contact: senf-dev@lists.berlios.de</a> |
    Copyright &copy; 2006 Fraunhofer Gesellschaft, SatCom, Stefan Bund
  </span>
</div>
</body></html>"""

SEARCH_PHP="""
<?php include 'search_functions.php'; ?>
<?php search(); ?>"""

SEARCH_PATHS_PHP="""<?php
function paths() {
  return array(
{{  for index in indices():
      "../${index}/",
}}
  );
}
?>"""

env.Command('doxy-header.html', 'SConscript', writeTemplate,
            TEMPLATE = Literal(HEADER),
            TITLE = "Documentation and API reference")
env.Command('doxy-footer.html', 'SConscript', writeTemplate,
            TEMPLATE = Literal(FOOTER))
env.Alias('all_docs',
          env.Command('search.php', [ 'html-munge.xsl', 'SConscript' ],
                      [ writeTemplate,
                        'xsltproc --nonet --html --stringparam topdir .. -o - $SOURCE $TARGET 2>/dev/null'
                            + "| sed"
                            +   r" -e 's/\[\[/<?/g' -e 's/\]\]/?>/g'"
                            +   r" -e 's/\$$projectname/Overview/g'"
                            +   r" -e 's/\$$title/Search results/g'"
                            +       "> ${TARGETS[0]}.tmp",
                        'mv ${TARGET}.tmp ${TARGET}' ],
                      TEMPLATE = Literal(HEADER
                                         + SEARCH_PHP.replace('<?','[[').replace('?>',']]')
                                         + FOOTER),
                      TITLE = "Search results"))
env.Alias('all_docs',
          env.Command('search_paths.php', 'SConscript', writeTemplate,
                      TEMPLATE = Literal(SEARCH_PATHS_PHP)))

env.Alias('install_all',
          env.Install( '$DOCINSTALLDIR/doclib', [ 'favicon.ico',
                                                  'logo-head.png',
                                                  'search.php',
                                                  'search_functions.php',
                                                  'search_paths.php',
                                                  'senf.css' ] ))

env.Clean('all', 'doxy-header.html') # I should not need this but I do ...
env.Clean('all_docs', 'doxy-header.html') # I should not need this but I do ...