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      1 #! /bin/sh
      2 
      3 # Convert one kind of changeset identifier to another.
      4 #
      5 # Usage: gcc-svn-ids -f from_kind -t to_kind id
      6 #
      7 # Where from_kind is one of:
      8 #   index   index into the changeset list used by the reghunt tools
      9 #   rev     is the Subversion revision name
     10 # and to_kind is one of:
     11 #   index   index into the changeset list used by the reghunt tools
     12 #   rev     is the Subversion revision name
     13 #   date    expanded UTC date string
     14 #   branch  the branch, or "trunk" for mainline
     15 #   author  the person who checked in the patch
     16 
     17 errmsg () {
     18   echo $1 1>&2
     19 }
     20 
     21 usage () {
     22   echo 'cvs_ids -f kind -t kind id' 1>&2
     23   echo '   where from_kind is index or rev' 1>&2
     24   echo '   and to_kind is index, rev, date, author, or branch' 1>&2
     25   echo "error"
     26   exit 1
     27 }
     28 
     29 if [ "x${REG_CHANGESET_LIST}" = "x" ]; then
     30   errmsg "REG_CHANGESET_LIST is not defined"
     31   echo "error"
     32   exit 1
     33 fi
     34 
     35 if [ ! -f ${REG_CHANGESET_LIST} ]; then
     36   errmsg "changeset list ${REG_CHANGESET_LIST} does not exist"
     37   echo "error"
     38   exit 1
     39 fi
     40 
     41 # Use a shorter name here.
     42 LIST=${REG_CHANGESET_LIST}
     43 
     44 while getopts "f:t:" ARG; do
     45   case ${ARG} in
     46   f) FROM_KIND="${OPTARG}";;
     47   t) TO_KIND="${OPTARG}";;
     48   h) usage;;
     49   *) errmsg "unrecognized option: ${ARG}";
     50      usage;;
     51   esac
     52 done
     53 shift `expr ${OPTIND} - 1`
     54 
     55 if [ $# -eq 0 ]; then
     56   errmsg "too few arguments, ID is missing"
     57   usage
     58 fi
     59 if [ $# -gt 1 ]; then
     60   errmsg "unexpected arguments: $*"
     61   usage
     62 fi
     63 ID="$1"
     64 
     65 case ${FROM_KIND} in
     66 index)  LINE=`awk -F '|' -v id="${ID}" '{if ($1 == id) print }' < ${LIST}`;;
     67 rev)    LINE=`awk -F '|' -v id="${ID}" '{if ($2 == id) print }' < ${LIST}`;;
     68 *)      errmsg "unrecognized FROM kind: ${FROM_KIND}";
     69         usage;;
     70 esac
     71 
     72 if [ "x${LINE}" = "x" ]; then
     73   errmsg "no entry found for ${FROM_KIND} = ${ID}"
     74   echo "error"
     75   exit 1
     76 fi
     77 
     78 case ${TO_KIND} in
     79 index)  TO_ID="`echo ${LINE} | awk -F '|' '{ print $1 }'`";;
     80 rev)    TO_ID="`echo ${LINE} | awk -F '|' '{ print $2 }'`";;
     81 author) TO_ID="`echo ${LINE} | awk -F '|' '{ print $3 }'`";;
     82 date)   TO_ID="`echo ${LINE} | awk -F '|' '{ print $4 }'`";;
     83 branch) TO_ID="`echo ${LINE} | awk -F '|' '{ print $5 }'`";;
     84 *)      errmsg "unrecognized TO kind: ${TO_KIND}";
     85         usage;;
     86 esac
     87 
     88 echo ${TO_ID}
     89