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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 BASE_URL="https://code.google.com/p/v8/source/list"
     33 VERSION="include/v8-version.h"
     34 MAJOR="V8_MAJOR_VERSION"
     35 MINOR="V8_MINOR_VERSION"
     36 BUILD="V8_BUILD_NUMBER"
     37 PATCH="V8_PATCH_LEVEL"
     38 
     39 V8="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
     40 
     41 ########## Function definitions
     42 
     43 cd $V8
     44 
     45 usage() {
     46 cat << EOF
     47 usage: $0 OPTIONS
     48 
     49 Fetches V8 revision information from a git-svn checkout.
     50 
     51 OPTIONS:
     52   -h    Show this message.
     53 
     54   -i    Print revision info for all branches matching the V8 version.
     55           Example usage: $0 -i 3.19.10$
     56           Output format: [Git hash] [SVN revision] [V8 version]
     57 
     58   -v    Print the V8 version tag for a trunk SVN revision.
     59           Example usage: $0 -v 14981
     60           Output format: [V8 version]
     61 
     62   -m    Print all patches that were merged to the specified V8 branch.
     63           Example usage: $0 -m 3.18
     64           Output format: [V8 version] [SVN revision] [SVN patch merged]*.
     65 
     66   -p    Print all patches merged to a specific V8 point-release.
     67           Example usage: $0 -p 3.19.12.1
     68           Output format: [SVN patch merged]*
     69 
     70   -u    Print a link to all SVN revisions between two V8 revision tags.
     71           Example usage: $0 -u 3.19.10:3.19.11
     72 EOF
     73 }
     74 
     75 tags() {
     76   git for-each-ref --format="%(objectname) %(refname:short)" refs/remotes/svn
     77 }
     78 
     79 tag_revision() {
     80   cut -d" " -f1
     81 }
     82 
     83 tag_log() {
     84   git log --format="%h %ci %ce %s" -1 $1
     85 }
     86 
     87 v8_hash() {
     88   tags | grep "svn/tags/$1$" | tag_revision
     89 }
     90 
     91 point_merges() {
     92   echo $1 | grep -o "r[0-9]\+"
     93 }
     94 
     95 hash_to_svn() {
     96   git svn log -1 --oneline $1 | cut -d" " -f1
     97 }
     98 
     99 tag_version() {
    100   tags | grep svn/tags/$1 | while read tag; do
    101     id=$(echo $tag | grep -o "[^/]*$")
    102     rev=$(echo $tag | tag_revision)
    103     svn=$(hash_to_svn $rev)
    104     echo $rev $svn $id
    105   done
    106 }
    107 
    108 svn_rev() {
    109   git svn find-rev $2 svn/$1
    110 }
    111 
    112 v8_rev() {
    113   cd $(git rev-parse --show-toplevel)
    114   rev=$(git show $1:$VERSION \
    115       | grep "#define" \
    116       | grep "$MAJOR\|$MINOR\|$BUILD\|$PATCH" \
    117       | grep -o "[0-9]\+$" \
    118       | tr "\\n" ".")
    119   echo ${rev%?}
    120 }
    121 
    122 merges_to_branch() {
    123   git cherry -v svn/trunk svn/$1 | while read merge; do
    124     h=$(echo $merge | cut -d" " -f2)
    125     svn=$(svn_rev $1 $h)
    126     merges=$(echo $merge | grep -o "r[0-9]\+")
    127     rev=$(v8_rev $h)
    128     echo $rev r$svn $merges
    129   done
    130 }
    131 
    132 url_for() {
    133   first=$(svn_rev trunk $(v8_hash $(echo $1 | cut -d":" -f1)))
    134   last=$(svn_rev trunk $(v8_hash $(echo $1 | cut -d":" -f2)))
    135   num=$[ $last - $first]
    136   echo "$BASE_URL?num=$num&start=$last"
    137 }
    138 
    139 ########## Option parsing
    140 
    141 while getopts ":hi:v:m:p:u:" OPTION ; do
    142   case $OPTION in
    143     h)  usage
    144         exit 0
    145         ;;
    146     i)  tag_version $OPTARG
    147         ;;
    148     v)  v8_rev $(svn_rev trunk r$OPTARG)
    149         ;;
    150     m)  merges_to_branch $OPTARG
    151         ;;
    152     p)  echo $(point_merges "$(tag_log $(v8_hash $OPTARG)^1)")
    153         ;;
    154     u)  url_for $OPTARG
    155         ;;
    156     ?)  echo "Illegal option: -$OPTARG"
    157         usage
    158         exit 1
    159         ;;
    160   esac
    161 done
    162