#!/bin/sh
#---------------------------------------------
#   xdg-mime
#
#   Utility script to manipulate MIME related information
#   on XDG compliant systems.
#
#   Refer to the usage() function below for usage.
#
#   Copyright 2009-2010, Fathi Boudra <fabo@freedesktop.org>
#   Copyright 2009-2010, Rex Dieter <rdieter@fedoraproject.org>
#   Copyright 2006, Kevin Krammer <kevin.krammer@gmx.at>
#   Copyright 2006, Jeremy White <jwhite@codeweavers.com>
#
#   LICENSE:
#
#---------------------------------------------

manualpage()
{
cat << _MANUALPAGE
_MANUALPAGE
}

usage()
{
cat << _USAGE
_USAGE
}

#@xdg-utils-common@

update_mime_database()
{
   if [ x"$mode" = x"user" -a -n "$DISPLAY" ] ; then
      detectDE
      if [ x"$DE" = x"kde" ] ; then
         DEBUG 1 "Running kbuildsycoca"
         if [ x"$KDE_SESSION_VERSION" = x"4" ]; then
             eval 'kbuildsycoca4'$xdg_redirect_output
         else
             eval 'kbuildsycoca'$xdg_redirect_output
         fi
      fi
   fi
   for x in `echo "$PATH:/opt/gnome/bin" | sed 's/:/ /g'`; do
      if [ -x $x/update-mime-database ] ; then
         DEBUG 1 "Running $x/update-mime-database $1"
         eval '$x/update-mime-database $1'$xdg_redirect_output
         return
      fi
   done
}

info_kde()
{
    if [ x"$KDE_SESSION_VERSION" = x"4" ]; then
        DEBUG 1 "Running kmimetypefinder \"$1\""
        kmimetypefinder "$1" 2>/dev/null | head -n 1
    else
        DEBUG 1 "Running kfile \"$1\""
        kfile "$1" 2> /dev/null | head -n 1 | cut -d "(" -f 2 | cut -d ")" -f 1
    fi

    if [ $? -eq 0 ]; then
        exit_success
    else
        exit_failure_operation_failed
    fi
}

info_gnome()
{
    if gvfs-info --help 2>/dev/null 1>&2; then
        DEBUG 1 "Running gvfs-info \"$1\""
        gvfs-info "$1" 2> /dev/null | grep standard::content-type | cut -d' ' -f4
    elif gnomevfs-info --help 2>/dev/null 1>&2; then
       DEBUG 1 "Running gnomevfs-info \"$1\""
       gnomevfs-info --slow-mime "$1" 2> /dev/null | grep "^MIME" | cut -d ":" -f 2 | sed s/"^ "//
    else
       # according to https://bugs.freedesktop.org/show_bug.cgi?id=33094#c5
       # neither gvfs-info or gnomevfs-info are present in a default Ubuntu Natty
       # install, so fallback to info_generic
       info_generic "$1"
    fi

    if [ $? -eq 0 ]; then
        exit_success
    else
        exit_failure_operation_failed
    fi
}

info_generic()
{
    if mimetype --version >/dev/null 2>&1; then
        DEBUG 1 "Running mimetype -b \"$1\""
        mimetype -b "$1"
    else
        DEBUG 1 "Running file --mime-type \"$1\""
        /usr/bin/file --mime-type "$1" 2> /dev/null | cut -d ":" -f 2 | sed s/"^ "//
    fi

    if [ $? -eq 0 ]; then
        exit_success
    else
        exit_failure_operation_failed
    fi
}

make_default_kde()
{
    # $1 is vendor-name.desktop
    # $2 is mime/type
    #
    # On KDE 3, add to $KDE_CONFIG_PATH/profilerc:
    # [$2 - 1]
    # Application=$1
    #
    # Remove all [$2 - *] sections, or even better,
    # renumber [$2 - *] sections and remove duplicate
    #
    # On KDE 4, add $2=$1 to $XDG_DATA_APPS/mimeapps.list
    #
    # Example file:
    #
    # [Added Associations]
    # text/plain=kde4-kate.desktop;kde4-kwrite.desktop;
    #
    # [Removed Associations]
    # text/plain=gnome-gedit.desktop;gnu-emacs.desktop;
    vendor="$1"
    mimetype="$2"
    if [ x"$KDE_SESSION_VERSION" = x"4" ]; then
        default_dir=`kde4-config --path xdgdata-apps 2> /dev/null | cut -d ':' -f 1`
        default_file="$default_dir/mimeapps.list"
    else
        default_dir=`kde-config --path config 2> /dev/null | cut -d ':' -f 1`
        default_file="$default_dir/profilerc"
    fi
    if [ -z "$default_dir" ]; then
        DEBUG 2 "make_default_kde: No kde runtime detected"
        return
    fi
    DEBUG 2 "make_default_kde $vendor $mimetype"
    DEBUG 1 "Updating $default_file"
    mkdir -p "$default_dir"
    [ -f "$default_file" ] || touch "$default_file"
    if [ x"$KDE_SESSION_VERSION" = x"4" ]; then
        [ -f "$default_file" ] || touch "$default_file"
        awk -v application="$vendor" -v mimetype="$mimetype" '
    BEGIN {
        prefix=mimetype "="
        associations=0
        found=0
        blanks=0
    }
    {
        suppress=0
        if (index($0, "[Added Associations]") == 1) {
            associations=1
        } else if (index($0, "[") == 1) {
            if (associations && !found) {
                print prefix application
                found=1
            }
            associations=0
        } else if ($0 == "") {
            blanks++
            suppress=1
        } else if (associations && index($0, prefix) == 1) {
            value=substr($0, length(prefix) + 1, length)
            split(value, apps, ";")
            value=application ";"
            count=0
            for (i in apps) {
              count++
            }
            for (i=0; i < count; i++) {
                if (apps[i] != application && apps[i] != "") {
                    value=value apps[i] ";"
                }
            }
            $0=prefix value
            found=1
        }
        if (!suppress) {
            while (blanks > 0) {
                print ""
                blanks--
            }
            print $0
        }
    }
    END {
        if (!found) {
            if (!associations) {
                print "[Added Associations]"
            }
            print prefix application
        }
        while (blanks > 0) {
            print ""
            blanks--
        }
    }
' "$default_file" > "${default_file}.new" && mv "${default_file}.new" "$default_file"
        eval 'kbuildsycoca4'$xdg_redirect_output
    else
        awk -v application="$vendor" -v mimetype="$mimetype" '
    BEGIN {
        header_start="[" mimetype " - "
        suppress=0
    }
    {
        if (index($0, header_start) == 1 )
            suppress=1
        else
            if (/^\[/) { suppress=0 }

        if (!suppress) {
            print $0
        }
    }
    END {
        print ""
        print "[" mimetype " - 1]"
        print "Application=" application
        print "AllowAsDefault=true"
        print "GenericServiceType=Application"
        print "Preference=1"
        print "ServiceType=" mimetype
    }
' "$default_file" > "${default_file}.new" && mv "${default_file}.new" "$default_file"
    fi
}

make_default_generic()
{
    # $1 is vendor-name.desktop
    # $2 is mime/type
    # Add $2=$1 to XDG_DATA_HOME/applications/mimeapps.list
    xdg_user_dir="$XDG_DATA_HOME"
    [ -n "$xdg_user_dir" ] || xdg_user_dir="$HOME/.local/share"
    default_file="$xdg_user_dir/applications/mimeapps.list"
    DEBUG 2 "make_default_generic $1 $2"
    DEBUG 1 "Updating $default_file"
    [ -f "$default_file" ] || touch "$default_file"
    awk -v mimetype="$2" -v application="$1" '
    BEGIN {
        prefix=mimetype "="
        indefault=0
        added=0
        blanks=0
        found=0
    }
    {
        suppress=0
        if (index($0, "[Default Applications]") == 1) {
            indefault=1
            found=1
        } else if (index($0, "[") == 1) {
            if (!added && indefault) {
                print prefix application
                added=1
            }
            indefault=0
        } else if ($0 == "") {
            suppress=1
            blanks++
        } else if (indefault && !added && index($0, prefix) == 1) {
                $0=prefix application
                added=1
        }
        if (!suppress) {
            while (blanks > 0) {
                print ""
                blanks--
            }
            print $0
        }
    }
    END {
        if (!added) {
            if (!found) {
                print ""
                print "[Default Applications]"
            }
            print prefix application
        }
        while (blanks > 0) {
            print ""
            blanks--
        }
    }
' "$default_file" > "${default_file}.new" && mv "${default_file}.new" "$default_file"
}

defapp_generic()
{
    MIME="$1"
    xdg_user_dir="$XDG_DATA_HOME"
    [ -n "$xdg_user_dir" ] || xdg_user_dir="$HOME/.local/share"
    xdg_user_dir="$xdg_user_dir/$xdg_dir_name"
    xdg_system_dirs="$XDG_DATA_DIRS"
    [ -n "$xdg_system_dirs" ] || xdg_system_dirs=/usr/local/share/:/usr/share/

    for x in `echo "$xdg_user_dir" | sed 's/:/ /g'`; do
        mimeapps_list="$x/applications/mimeapps.list"
        if [ -f "$mimeapps_list" ] ; then
            DEBUG 2 "Checking $mimeapps_list"
            trader_result=`awk -v mimetype="$MIME" '
    BEGIN {
        prefix=mimetype "="
        indefault=0
        found=0
    }
    {
        if (index($0, "[Default Applications]") == 1) {
            indefault=1
        } else if (index($0, "[") == 1) {
            indefault=0
        } else if (!found && indefault && index($0, prefix) == 1) {
            print substr($0, length(prefix) +1, length)
            found=1
        }
    }
' $mimeapps_list`
            if [ -n "$trader_result" ] ; then
                echo $trader_result
                exit_success
            fi
        fi
    done

    for x in `echo "$xdg_system_dirs" | sed 's/:/ /g'`; do
       DEBUG 2 "Checking $x/applications/defaults.list"
       trader_result=`grep "$MIME=" $x/applications/defaults.list 2> /dev/null | cut -d '=' -f 2 | cut -d ';' -f 1`
       if [ -n "$trader_result" ] ; then
          echo $trader_result
          exit_success
       fi
    done
    exit_success
}

defapp_kde()
{
    MIME="$1"
    if [ x"$KDE_SESSION_VERSION" = x"4" ]; then
        KTRADER=`which ktraderclient 2> /dev/null`
        MIMETYPE="--mimetype"
        SERVICETYPE="--servicetype"
    else
        KTRADER=`which ktradertest 2> /dev/null`
    fi
    if [ -n "$KTRADER" ] ; then
        DEBUG 1 "Running KDE trader query \"$MIME\" mimetype and \"Application\" servicetype"
        trader_result=`$KTRADER $MIMETYPE "$MIME" $SERVICETYPE Application 2>/dev/null \
            | grep DesktopEntryPath | head -n 1 | cut -d ':' -f 2 | cut -d \' -f 2`
        if [ -n "$trader_result" ] ; then
            basename "$trader_result"
            exit_success
        else
            exit_failure_operation_failed
        fi
    else
        defapp_generic "$1"
    fi
}

[ x"$1" != x"" ] || exit_failure_syntax

mode=
action=
filename=
mimetype=

case $1 in
  install)
    action=install
    ;;

  uninstall)
    action=uninstall
    ;;

  query)
    shift

    if [ -z "$1" ] ; then
        exit_failure_syntax "query type argument missing"
    fi

    case $1 in
      filetype)
        action=info

        filename="$2"
        if [ -z "$filename" ] ; then
            exit_failure_syntax "FILE argument missing"
        fi
        case $filename in
          -*)
            exit_failure_syntax "unexpected option '$filename'"
            ;;
        esac
        check_input_file "$filename"
        filename=`readlink -f -- "$filename"`
        ;;

      default)
        action=defapp
        mimetype="$2"
        if [ -z "$mimetype" ] ; then
            exit_failure_syntax "mimetype argument missing"
        fi
        case $mimetype in
          -*)
            exit_failure_syntax "unexpected option '$mimetype'"
            ;;

          */*)
            # Ok
            ;;

          *)
            exit_failure_syntax "mimetype '$mimetype' is not in the form 'minor/major'"
            ;;
        esac
        ;;

      *)
      exit_failure_syntax "unknown query type '$1'"
      ;;
    esac
    ;;

  default)
    action=makedefault
    shift

    if [ -z "$1" ] ; then
        exit_failure_syntax "application argument missing"
    fi
    case $1 in
      -*)
        exit_failure_syntax "unexpected option '$1'"
        ;;

      *.desktop)
        filename="$1"
        ;;

      *)
        exit_failure_syntax "malformed argument '$1', expected *.desktop"
        ;;
    esac
    ;;

  *)
  exit_failure_syntax "unknown command '$1'"
  ;;
esac

shift


if [ "$action" = "makedefault" ]; then
    if [ -z "$1" ] ; then
        exit_failure_syntax "mimetype argument missing"
    fi

    while [ $# -gt 0 ] ; do
        case $1 in
          -*)
            exit_failure_syntax "unexpected option '$1'"
            ;;
        esac
        mimetype="$1"
        shift

        make_default_kde "$filename" "$mimetype"
        make_default_generic "$filename" "$mimetype"
    done
    exit_success
fi

if [ "$action" = "info" ]; then
    detectDE

    if [ x"$DE" = x"" ]; then
        if [ -x /usr/bin/file ]; then
            DE=generic
        fi
    fi

    case "$DE" in
        kde)
        info_kde "$filename"
        ;;

        gnome*)
        info_gnome "$filename"
        ;;

        *)
        info_generic "$filename"
        ;;
    esac
    exit_failure_operation_impossible "no method available for quering MIME type of '$filename'"
fi

if [ "$action" = "defapp" ]; then
    detectDE

    case "$DE" in
        kde)
        defapp_kde "$mimetype"
        ;;

        *)
        defapp_generic "$mimetype"
        ;;
    esac
    exit_failure_operation_impossible "no method available for quering default application for '$mimetype'"
fi

vendor=true
while [ $# -gt 0 ] ; do
    parm="$1"
    shift

    case $parm in
      --mode)
        if [ -z "$1" ] ; then
            exit_failure_syntax "mode argument missing for --mode"
        fi
        case "$1" in
          user)
            mode="user"
            ;;

          system)
            mode="system"
            ;;

          *)
            exit_failure_syntax "unknown mode '$1'"
            ;;
        esac
        shift
        ;;

      --novendor)
        vendor=false
        ;;

      -*)
        exit_failure_syntax "unexpected option '$parm'"
        ;;

      *)
        if [ -n "$filename" ] ; then
            exit_failure_syntax "unexpected argument '$parm'"
        fi

        filename="$parm"
        check_input_file "$filename"
        ;;
    esac
done

if [ -z "$action" ] ; then
    exit_failure_syntax "command argument missing"
fi

if [ -n "$XDG_UTILS_INSTALL_MODE" ] ; then
    if [ "$XDG_UTILS_INSTALL_MODE" = "system" ] ; then
        mode="system"
    elif [ "$XDG_UTILS_INSTALL_MODE" = "user" ] ; then
        mode="user"
    fi
fi

if [ -z "$mode" ] ; then
    if [ `whoami` = "root" ] ; then
        mode="system"
    else
        mode="user"
    fi
fi

if [ -z "$filename" ] ; then
    exit_failure_syntax "mimetypes-file argument missing"
fi

if [ "$vendor" =  "true" -a "$action" = "install" ] ; then
    check_vendor_prefix "$filename"
fi

xdg_base_dir=
xdg_dir_name=mime/packages/

xdg_user_dir="$XDG_DATA_HOME"
[ -n "$xdg_user_dir" ] || xdg_user_dir="$HOME/.local/share"
[ x"$mode" = x"user" ] && xdg_base_dir="$xdg_user_dir/mime"
xdg_user_dir="$xdg_user_dir/$xdg_dir_name"

xdg_system_dirs="$XDG_DATA_DIRS"
[ -n "$xdg_system_dirs" ] || xdg_system_dirs=/usr/local/share/:/usr/share/
for x in `echo $xdg_system_dirs | sed 's/:/ /g'`; do
    if [ -w $x/$xdg_dir_name ] ; then
        [ x"$mode" = x"system" ] && xdg_base_dir="$x/mime"
        xdg_global_dir="$x/$xdg_dir_name"
        break
    fi
done
[ -w $xdg_global_dir ] || xdg_global_dir=
DEBUG 3 "xdg_user_dir: $xdg_user_dir"
DEBUG 3 "xdg_global_dir: $xdg_global_dir"

# Find KDE3 mimelnk directory
kde_user_dir=
kde_global_dir=
kde_global_dirs=`kde${KDE_SESSION_VERSION}-config --path mime 2> /dev/null`
DEBUG 3 "kde_global_dirs: $kde_global_dirs"
first=
for x in `echo $kde_global_dirs | sed 's/:/ /g'` ; do
    if [ -z "$first" ] ; then
        first=false
        kde_user_dir="$x"
    elif [ -w $x ] ; then
        kde_global_dir="$x"
    fi
done
DEBUG 3 "kde_user_dir: $kde_user_dir"
DEBUG 3 "kde_global_dir: $kde_global_dir"

# TODO: Gnome legacy support
# See http://forums.fedoraforum.org/showthread.php?t=26875
gnome_user_dir="$HOME/.gnome/apps"
gnome_global_dir=/usr/share/gnome/apps
[ -w $gnome_global_dir ] || gnome_global_dir=
DEBUG 3 "gnome_user_dir: $gnome_user_dir"
DEBUG 3 "gnome_global_dir: $gnome_global_dir"

if [ x"$mode" = x"user" ] ; then
    xdg_dir="$xdg_user_dir"
    kde_dir="$kde_user_dir"
    gnome_dir="$gnome_user_dir"
    my_umask=077
else
    xdg_dir="$xdg_global_dir"
    kde_dir="$kde_global_dir"
    gnome_dir="$gnome_global_dir"
    my_umask=022
    if [ -z "${xdg_dir}${kde_dir}${gnome_dir}" ] ; then
        exit_failure_operation_impossible "No writable system mimetype directory found."
    fi
fi

# echo "[xdg|$xdg_user_dir|$xdg_global_dir]"
# echo "[kde|$kde_user_dir|$kde_global_dir]"
# echo "[gnome|$gnome_user_dir|$gnome_global_dir]"
# echo "[using|$xdg_dir|$kde_dir|$gnome_dir]"

basefile=`basename "$filename"`
#[ -z $vendor ] || basefile="$vendor-$basefile"

mimetypes=
if [ -n "$kde_dir" ] ; then
    DEBUG 2 "KDE3 mimelnk directory found, extracting mimetypes from XML file"

    mimetypes=`awk < "$filename" '
# Strip XML comments
BEGIN {
 suppress=0
}
{
 do
    if (suppress) {
       if (match($0,/-->/)) {
           $0=substr($0,RSTART+RLENGTH)
           suppress=0
       }
       else {
           break
       }
    }
    else {
       if (match($0,/<!--/)) {
           if (RSTART>1) print substr($0,0,RSTART)
           $0=substr($0,RSTART+RLENGTH)
           suppress=1
       }
       else {
           if ($0) print $0
           break
       }
    }
 while(1)
}
' | awk '
# List MIME types listed in <mime-type> tags
BEGIN {
  RS="<"
}
/^mime-info/, /^\/mime-info/ {
  if (match($0,/^mime-type/)) {
    if (match($0,/type="[^"]*/) || match($0,/type='"'"'[^'"'"']*/)) {
      print substr($0,RSTART+6,RLENGTH-6)
    }
  }
}'`
fi

DEBUG 1 "$action mimetype in $xdg_dir"

case $action in
    install)
        save_umask=`umask`
        umask $my_umask

        for x in $xdg_dir ; do
            mkdir -p $x
            eval 'cp $filename $x/$basefile'$xdg_redirect_output
        done

        if [ -n "$mimetypes" ] ; then
            # No quotes around $mimetypes
            for x in $mimetypes ; do
                DEBUG 1 "Installing $kde_dir/$x.desktop (KDE 3.x support)"
                mkdir -p `dirname $kde_dir/$x.desktop`
                awk < "$filename" '
# Strip XML comments
BEGIN {
 suppress=0
}
{
 do
    if (suppress) {
       if (match($0,/-->/)) {
           $0=substr($0,RSTART+RLENGTH)
           suppress=0
       }
       else {
           break
       }
    }
    else {
       if (match($0,/<!--/)) {
           if (RSTART>1) print substr($0,0,RSTART)
           $0=substr($0,RSTART+RLENGTH)
           suppress=1
       }
       else {
           if ($0) print $0
           break
       }
    }
 while(1)
}
' | awk > $kde_dir/$x.desktop '
# Extract mimetype $x from the XML file $filename
# Note that bash requires us to escape a single quote as '"'"'
BEGIN {
  the_type=ARGV[1]
  the_source=ARGV[2]
  ARGC=1
  RS="<"
  found=0
  glob_patterns=""
}
/^mime-info/, /^\/mime-info/ {
  if (match($0,/^mime-type/)) {
    if (match($0,/type="[^"]*/) || match($0,/type='"'"'[^'"'"']*/)) {
      if (substr($0,RSTART+6,RLENGTH-6) == the_type) {
        found=1
        print "[Desktop Entry]"
        print "# Installed by xdg-mime from " the_source
        print "Type=MimeType"
        print "MimeType=" the_type
        the_icon=the_type
        sub("/", "-", the_icon)
        print "Icon=" the_icon
      }
    }
  }
  else if (found) {
    if (match($0,/^\/mime-type/)) {
      if (glob_patterns)
         print "Patterns=" glob_patterns
      exit 0
    }

    if (match($0,/^sub-class-of/)) {
      if (match($0,/type="[^"]*/) || match($0,/type='"'"'[^'"'"']*/)) {
        print "X-KDE-IsAlso=" substr($0,RSTART+6,RLENGTH-6)
      }
      else {
        print "Error: '"'"'type'"'"' argument missing in " RS $0
        exit 1
      }
    }
    if (match($0,/^glob/)) {
      if (match($0,/pattern="[^"]*/) || match($0,/pattern='"'"'[^'"'"']*/)) {
        glob_patterns = glob_patterns substr($0,RSTART+9,RLENGTH-9) ";"
      }
      else {
        print "Error: '"'"'pattern'"'"' argument missing in " RS $0
        exit 1
      }
    }
    if (match($0,/^comment/)) {
      if (match($0,/xml:lang="[^"]*/) || match($0,/xml:lang='"'"'[^'"'"']*/)) {
        lang=substr($0,RSTART+10,RLENGTH-10)
      }
      else {
        lang=""
      }
      if (match($0,/>/)) {
        comment=substr($0,RSTART+1)
        sub("&lt;", "<", comment)
        sub("&gt;", ">", comment)
        sub("&amp;", "\\&", comment)
        if (lang)
           print "Comment[" lang "]=" comment
        else
           print "Comment=" comment
      }
    }
  }
}
END {
  if (!found) {
    print "Error: Mimetype '"'"'" the_type "'"'"' not found"
    exit 1
  }
}
' $x $basefile
                if [ "$?" = "1" ] ; then
                    grep -A 10 "^Error:" $kde_dir/$x.desktop >&2
                    rm $kde_dir/$x.desktop
                    exit 1
                fi
            done
        fi

        umask $save_umask
        ;;

    uninstall)
        for x in $xdg_dir ; do
            rm -f $x/$basefile
        done

        # No quotes around $mimetypes
        for x in $mimetypes ; do
            if grep '^# Installed by xdg-mime' $kde_dir/$x.desktop >/dev/null 2>&1; then
                DEBUG 1 "Removing $kde_dir/$x.desktop (KDE 3.x support)"
                rm -f $kde_dir/$x.desktop
            fi
        done
        ;;
esac

update_mime_database $xdg_base_dir

exit_success