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      1 #!/bin/bash
      2 # Copyright 2013 the V8 project authors. All rights reserved.
      3 # Redistribution and use in source and binary forms, with or without
      4 # modification, are permitted provided that the following conditions are
      5 # met:
      6 #
      7 #     * Redistributions of source code must retain the above copyright
      8 #       notice, this list of conditions and the following disclaimer.
      9 #     * Redistributions in binary form must reproduce the above
     10 #       copyright notice, this list of conditions and the following
     11 #       disclaimer in the documentation and/or other materials provided
     12 #       with the distribution.
     13 #     * Neither the name of Google Inc. nor the names of its
     14 #       contributors may be used to endorse or promote products derived
     15 #       from this software without specific prior written permission.
     16 #
     17 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     18 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     19 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     20 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
     21 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     22 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
     23 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     24 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     25 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     26 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     27 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     28 
     29 
     30 ########## Global variable definitions
     31 
     32 DEPS_STRING='"v8_revision":'
     33 INFO=tools/v8-info.sh
     34 
     35 V8="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
     36 
     37 ########## Function definitions
     38 
     39 usage() {
     40 cat << EOF
     41 usage: $0 OPTIONS
     42 
     43 Run in chromium/src to get information about V8 rolls.
     44 
     45 OPTIONS:
     46   -h    Show this message.
     47   -n    Number of rolls to print information about.
     48   -s    Chromium git hash to start printing V8 information about.
     49 EOF
     50 }
     51 
     52 v8_line() {
     53   git show $1:DEPS | grep -n $DEPS_STRING | cut -d":" -f1
     54 }
     55 
     56 v8_info() {
     57   git blame -L$(v8_line $1),+1 $1 DEPS | grep $DEPS_STRING
     58 }
     59 
     60 v8_svn() {
     61   sed -e 's/^.*"\([0-9]\+\)",$/\1/'
     62 }
     63 
     64 v8_roll() {
     65   cut -d" " -f1
     66 }
     67 
     68 find_rev() {
     69   git svn find-rev $1
     70 }
     71 
     72 msg() {
     73   msg=$(git log --format="%h %ci %ce" -1 $1)
     74   h=$(echo $msg | cut -d" " -f1)
     75   d=$(echo $msg | cut -d" " -f2)
     76   t=$(echo $msg | cut -d" " -f3)
     77   a=$(echo $msg | cut -d" " -f5)
     78   a1=$(echo $a | cut -d"@" -f1)
     79   a2=$(echo $a | cut -d"@" -f2)
     80   echo $h $d $t $a1@$a2
     81 }
     82 
     83 v8_revision() {
     84   cd $V8
     85   $INFO -v $1
     86 }
     87 
     88 rolls() {
     89   roll=$2
     90   for i in $(seq 1 $1); do
     91     info=$(v8_info $roll)
     92     roll=$(echo $info | v8_roll $roll)
     93     trunk=$(echo $info | v8_svn $roll)
     94     echo "$(v8_revision $trunk) $trunk $(find_rev $roll) $(msg $roll)"
     95     roll=$roll^1
     96   done
     97 }
     98 
     99 ########## Option parsing
    100 
    101 REVISIONS=1
    102 START=HEAD
    103 
    104 while getopts ":hn:s:" OPTION ; do
    105   case $OPTION in
    106     h)  usage
    107         exit 0
    108         ;;
    109     n) REVISIONS=$OPTARG
    110         ;;
    111     s) START=$OPTARG
    112         ;;
    113     ?)  echo "Illegal option: -$OPTARG"
    114         usage
    115         exit 1
    116         ;;
    117   esac
    118 done
    119 
    120 rolls $REVISIONS $START
    121