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#!/bin/sh -x

# Generate HTML documentation from GCC Texinfo docs.

# This version is for GCC 3.1 and later versions.

# Run this from /tmp.

CVSROOT=/cvs/gcc

export CVSROOT

PATH=/usr/local/bin:$PATH

WWWBASE=/www/gcc/htdocs

WWWBASE_PREFORMATTED=/www/gcc/htdocs-preformatted

WWWPREPROCESS='/www/gcc/bin/preprocess -r'

# Process options -rrelease and -ddirectory

RELEASE=""

SUBDIR=""

while [ $# -gt 0 ]; do

  case $1 in

    -r*)

      if [ -n "$RELEASE" ]; then

        echo "Multiple releases specified" >&2

        exit 1

      fi

      RELEASE="${1#-r}"

      if [ -z "$RELEASE" ]; then

        shift

        RELEASE="$1"

        if [ -z "$RELEASE" ]; then

          echo "No release specified with -r" >&2

          exit 1

        fi

      fi

      ;;

    -d*)

      if [ -n "$SUBDIR" ]; then

        echo "Multiple subdirectories specified" >&2

        exit 1

      fi

      SUBDIR="${1#-d}"

      if [ -z "$SUBDIR" ]; then

        shift

        SUBDIR="$1"

        if [ -z "$SUBDIR" ]; then

          echo "No subdirectory specified with -d" >&2

          exit 1

        fi

      fi

      ;;

    *)

      echo "Unknown argument \"$1\"" >&2

      exit 1

      ;;

  esac

  shift

done

if [ -n "$RELEASE" ] && [ -z "$SUBDIR" ]; then

  echo "Release specified without subdirectory" >&2

  exit 1

fi

if [ -z "$SUBDIR" ]; then

  DOCSDIR=$WWWBASE/onlinedocs

else

  DOCSDIR=$WWWBASE/onlinedocs/$SUBDIR

fi

if [ ! -d $DOCSDIR ]; then

  mkdir $DOCSDIR

fi

if [ -z "$RELEASE" ]; then

  RELEASE=HEAD

fi

WORKDIR=/tmp/gcc-doc-update.$$

/bin/rm -rf $WORKDIR

/bin/mkdir $WORKDIR

cd $WORKDIR

# Find all the texi files in the repository, except those in directories

# we do not care about (texinfo, etc).

find $CVSROOT/gcc -name \*.texi,v -print | fgrep -v -f/home/gccadmin/scripts/doc_exclude | sed -e s#$CVSROOT/##g -e s#,v##g -e s#Attic/##g > FILES

# Checkout all the texi files.

cvs -Q export -r$RELEASE `cat FILES` gcc/gcc/doc/install.texi2html gcc/gcc/doc/include/texinfo.tex gcc/gcc/ada/xgnatugn.adb gcc/gcc/ada/ug_words gcc/gcc/BASE-VER gcc/gcc/DEV-PHASE

# Build a tarball of the sources.

tar cf docs-sources.tar gcc

# The directory to pass to -I; this is the one with texinfo.tex

# and fdl.texi.

includedir=gcc/gcc/doc/include

MANUALS="cpp cppinternals fastjar gcc gccint gcj g77 gfortran gnat_ug_unx gnat_ug_vms gnat_ug_vxw gnat_ug_wnt gnat_ugn_unw gnat-style gnat_rm libiberty porting"

# Generate gnat_ugn_unw

if [ -f gcc/gcc/ada/xgnatugn.adb ]; then

   gnatmake -q gcc/gcc/ada/xgnatugn

   ./xgnatugn unw gcc/gcc/ada/gnat_ugn.texi \

     gcc/gcc/ada/ug_words gnat_ugn_unw.texi

fi

# Generate gcc-vers.texi.

(

   echo "@set version-GCC $(cat gcc/gcc/BASE-VER)"

   if [ "$(cat gcc/gcc/DEV-PHASE)" = "experimental" ]; then

      echo "@set DEVELOPMENT"

   else

      echo "@clear DEVELOPMENT"

   fi

) > $includedir/gcc-vers.texi

# Now convert the relevant files from texi to HTML, PDF and PostScript.

for file in $MANUALS; do

  filename=`find . -name ${file}.texi`

  if [ "${filename}" ]; then

    makeinfo --html -I ${includedir} -I `dirname ${filename}` ${filename}

    tar cf ${file}-html.tar ${file}/*.html

    texi2dvi -I ${includedir} ${filename} 

    texi2pdf -I ${includedir} ${filename} 

    mkdir -p $DOCSDIR/$file

  fi

done

# Then build a gzipped copy of each of the resulting .html, .ps and .tar files

for file in */*.html *.ps *.pdf *.tar; do

  cat $file | gzip --best > $file.gz

done

# On the 15th of the month, wipe all the old files from the

# web server.

today=`date +%d`

if test $today = 15; then

  find $DOCSDIR -type f -maxdepth 1 -print | grep -v index.html | xargs rm

  for m in $MANUALS; do

    rm $DOCSDIR/$m/*.html $DOCSDIR/$m/*.html.gz

  done

fi

# And copy the resulting files to the web server

for file in */*.html *.ps *.pdf *.tar; do

  cat $DOCSDIR/$file |

    sed -e '/^

        -e '/^%DVIPSSource:/d' > file1

  cat $file |

    sed -e '/^

        -e '/^%DVIPSSource:/d' > file2

  if cmp -s file1 file2; then

    :

  else

    cp $file $DOCSDIR/$file

    cp $file.gz $DOCSDIR/$file.gz

  fi

done

cd $DOCSDIR

# Finally, generate the installation documentation (but only for CVS HEAD).

if [ "$RELEASE" = "HEAD" ]; then

  SOURCEDIR=$WORKDIR/gcc/gcc/doc

  DESTDIR=$WWWBASE_PREFORMATTED/install

  export SOURCEDIR

  export DESTDIR

  $WORKDIR/gcc/gcc/doc/install.texi2html

  # Preprocess the entire web site, not just the install docs!

  echo "Invoking $WWWPREPROCESS"

  $WWWPREPROCESS |grep -v '^  Warning: Keeping'

fi

# Clean up behind us.

rm -rf $WORKDIR