ru.linux

 
 - RU.LINUX ---------------------------------------------------------------------
 From : Andy Shevchenko                      2:465/192      29 Oct 2001  17:53:47
 To : All
 Subject : Re: RFC
 -------------------------------------------------------------------------------- 
 

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 "Pavel Vasilyev" <Pavel_Vasilyev@p19.f3003.n5020.z2.fidonet.org> wrote
 in message news:1004396608@p19.f3003.n5020.z2.fidonet...
 
 >    Hаpод, а на каком сайте находится полное собpание RFC ?
 
 Посмотри на приатаченый скриптец -- пригодится :)
 (Будет у тебя, если захочешь :))
 
 --
 With Best Regards,
 Andy Shevchenko                    mailto:andy@smile.org.ua
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 :
 #########################################################################=
 #
 # Shellscript: rfcat - print RFC text
 # Version    : 2.3
 # Author     : Heiner Steven <heiner.steven@odn.de>
 # Date       : 2001-04-25
 # Category   : Web
 # SCCS-Id.   : @(#) rfcat  2.3 01/07/26
 #########################################################################=
 #
 # Description
 #    o Prints the text of an internet standard (RFC: "Request For
 #  Comments") to standard output. Tries to locate the RFC locally,
 #  and retrieves it otherwise direcly from the Web.
 #    o Each RFC text file can optionally be cached after first retrieval
 #
 # Note
 #    Needs the following non-standard programs:
 #  wget
 #########################################################################=
 #
 
 PN=3D`basename "$0"`      # Program name
 VER=3D'2.3'
 
 # A program to accept an URL as command line argument, retrieves it, and
 # prints the results to standard output
 : ${GETURL:=3Dwget}
 : ${GETURLFLAGS=3D"-O- -q"}   # may be empty
 
 : ${COMPRESS:=3Dgzip}
 : ${COMPRESSFLAGS=3D-f}    # may be empty
 
 # The local directory all RFCs are contained within
 : ${RFCDIR:=3D/usr/local/share/rfc}
 
 # The base WWW URL for all RFCs
 RFC_BASE_URL=3Dhttp://www.ietf.org
 
 # The URL of the "INDEX" page
 RFC_INDEX_URL=3D$RFC_BASE_URL/iesg/1rfc_index.txt
 
 # A template for an RFC URL. The string '${no}' will be replaced by the
 # RFC's number
 RFC_BY_NUMBER_TEMPL=3D"$RFC_BASE_URL/rfc/rfc\${no}.txt"
 
 #########################################################################=
 Usage () {
     echo >&2 "$PN - print RFC text, $VER (stv)
 usage: $PN [-fc] rfcspec [...]
    -c: create a local copy of the file, if it does not exist already
    -f:  force retrieval of the file from the Web
 
 An rfcspec can be a RFC number (e.g. 2100), or the symbolic name
 \"INDEX\". The RFC is searched locally (RFCDIR=3D$RFCDIR).
 If this was not successful, $PN will retrieve it from $RFC_BASE_URL."
     exit 1
 }
 
 Msg () {
     for MsgLine
     do echo "$PN: $MsgLine" >&2
     done
 }
 
 Fatal () { Msg "$@"; exit 1; }
 
 #########################################################################=
 
 # rfc2path - convert RFC specification to local path name of file
 #########################################################################=
 rfc2path () {
     [ $# -eq 1 ] || Fatal "INTERNAL ERROR: rfc2path needs one argument"
 
     _rfcspec=3D$1; shift
 
     case "$_rfcspec" in
       INDEX)
       _url=3D$RFC_INDEX_URL;;
   *)
       no=3D$_rfcspec
       eval _url=3D"$RFC_BY_NUMBER_TEMPL";
     esac
     echo $RFCDIR/rfc$_rfcspec
 }
 
 #########################################################################=
 
 # rfc2url - convert RFC specification to URL of file
 #########################################################################=
 rfc2url () {
     [ $# -eq 1 ] || Fatal "INTERNAL ERROR: rfc2url needs one argument"
 
     _rfcspec=3D$1; shift
 
     case "$_rfcspec" in
       INDEX)
       _url=3D$RFC_INDEX_URL;;
   *)
       no=3D$_rfcspec
       eval _url=3D"$RFC_BY_NUMBER_TEMPL";
     esac
     echo "$_url"
 }
 
 #########################################################################=
 set -- `getopt cfh "$@"` || Usage
 [ $# -lt 1 ] && Usage      # "getopt" detected an error
 
 CacheFile=3Dfalse
 ForceRetrieval=3Dfalse
 while [ $# -gt 0 ]
 do
     case "$1" in
       -c)  CacheFile=3Dtrue;;
       -f)  ForceRetrieval=3Dtrue;;
   --)  shift; break;;
   -h)  Usage;;
   -*)  Usage;;
   *)  break;;      # First file name
     esac
     shift
 done
 
 [ $# -lt 1 ] && Usage
 
 errors=3D0
 for rfc
 do
     rfc=3D`echo "$rfc" | sed 's/^00*//g'`  # remove leading zeroes
 
     #
     # Search RFC locally
     #
 
     file=3D`rfc2path "$rfc"`
     if [ -n "$file" ] && [ $ForceRetrieval =3D false ]
     then
   for ext in "" .gz .Z .z .txt.gz .txt.Z .txt.z
   do
       [ -r "$file$ext" ] || continue
       case "$ext" in
    "")    cat "$file$ext" ;;
    *.gz )  gunzip -c "$file$ext";;
    *.Z )  zcat "$file$ext";;
    *.z )  unpack "$file$ext";;
       esac
       [ $? -eq 0 ] || errors=3D`expr $errors + 1`
       continue 2      # Next RFC
   done
     fi
 
     #
     # No local file. Try to retrieve the RFC via URL
     #
 
     url=3D`rfc2url "$rfc"`
     if [ -n "$url" ]
     then
       # Get the RFC using the Web.
   # XXX: This page could be cached locally using
   #   ... | tee $RFCDIR/...
 
   if [ $CacheFile =3D true ]
   then
       # Retrieve file, and create a local copy.
 
       # Ignore keyboard signals, because they could cause the local copy
       # to be incomplete
 
       trap '' 1 2 3 13 15
       $GETURL $GETURLFLAGS "$url" | tee "$file"
       trap 1 2 3 13 15
       if [ -s "$file" ]
       then "$COMPRESS" $COMPRESSFLAGS "$file"
       else rm -f "$file"      # remove empty file
       fi
   else
       $GETURL $GETURLFLAGS "$url"
   fi
   [ $? -ne 0 ] && errors=3D`expr $errors + 1`
 
     fi
 done
 exit $errors
 
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