From: g0dil Date: Thu, 31 Jan 2008 13:20:08 +0000 (+0000) Subject: doclib: Add extensive documentation about the documentation build process X-Git-Url: http://g0dil.de/git?a=commitdiff_plain;h=e8e6286a7026f5c66afdbe28f0b4b7a88bac399d;p=senf.git doclib: Add extensive documentation about the documentation build process git-svn-id: https://svn.berlios.de/svnroot/repos/senf/trunk@654 270642c3-0616-0410-b53a-bc976706d245 --- diff --git a/doclib/SConscript b/doclib/SConscript index bbb4dde..102709e 100644 --- a/doclib/SConscript +++ b/doclib/SConscript @@ -1,5 +1,154 @@ # -*- 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the doclib/doxy-header.html and/or +# doclib/doxy-footer.html files are regenerated +# +# * If any documentation is out-of-date with respect to it's source +# files, the documentation is regenerated.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 within them. 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 +# '
' 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 rang direction (top-bottom vs. left-right). Then 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 'insstalldox' 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 broken
+#   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
 
diff --git a/senf.dict b/senf.dict
index eeb8343..5e3e2c7 100644
--- a/senf.dict
+++ b/senf.dict
@@ -73,6 +73,8 @@ dl
 DNS
 dontinclude
 dox
+doxyfile
+doxygen
 DSMCCSection
 dt
 ElementParser
@@ -279,6 +281,7 @@ PriorityJoin
 protocolbundle
 protocolbundles
 protocolType
+py
 QueueingDiscipline
 queueSize
 RateFilter
@@ -306,6 +309,7 @@ ScopeId
 screenshot
 sec
 senf
+senfscons
 ServerSocketHandle
 setBegin
 setEnd