Adding useful scripts to parse revision info.

tools/v8-rolls.sh

+#!/bin/bash
+# Copyright 2013 the V8 project authors. All rights reserved.
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions are
+# met:
+#
+#     * Redistributions of source code must retain the above copyright
+#       notice, this list of conditions and the following disclaimer.
+#     * Redistributions in binary form must reproduce the above
+#       copyright notice, this list of conditions and the following
+#       disclaimer in the documentation and/or other materials provided
+#       with the distribution.
+#     * Neither the name of Google Inc. nor the names of its
+#       contributors may be used to endorse or promote products derived
+#       from this software without specific prior written permission.
+#
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+########## Global variable definitions
+
+DEPS_STRING='"v8_revision":'
+INFO=tools/v8-info.sh
+
+V8="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
+
+########## Function definitions
+
+usage() {
+cat << EOF
+usage: $0 OPTIONS
+
+Run in chromium/src to get information about V8 rolls.
+
+OPTIONS:
+  -h    Show this message.
+  -n    Number of rolls to print information about.
+  -s    Chromium git hash to start printing V8 information about.
+EOF
+}
+
+v8_line() {
+  git show $1:DEPS | grep -n $DEPS_STRING | cut -d":" -f1
+}
+
+v8_info() {
+  git blame -L$(v8_line $1),+1 $1 DEPS | grep $DEPS_STRING
+}
+
+v8_svn() {
+  sed -e 's/^.*"\([0-9]\+\)",$/\1/'
+}
+
+v8_roll() {
+  cut -d" " -f1
+}
+
+find_rev() {
+  git svn find-rev $1
+}
+
+msg() {
+  msg=$(git log --format="%h %ci %ce" -1 $1)
+  h=$(echo $msg | cut -d" " -f1)
+  d=$(echo $msg | cut -d" " -f2)
+  t=$(echo $msg | cut -d" " -f3)
+  a=$(echo $msg | cut -d" " -f5)
+  a1=$(echo $a | cut -d"@" -f1)
+  a2=$(echo $a | cut -d"@" -f2)
+  echo $h $d $t $a1@$a2
+}
+
+v8_revision() {
+  cd $V8
+  $INFO -v $1
+}
+
+rolls() {
+  roll=$2
+  for i in $(seq 1 $1); do
+    info=$(v8_info $roll)
+    roll=$(echo $info | v8_roll $roll)
+    trunk=$(echo $info | v8_svn $roll)
+    echo "$(v8_revision $trunk) $trunk $(find_rev $roll) $(msg $roll)"
+    roll=$roll^1
+  done
+}
+
+########## Option parsing
+
+REVISIONS=1
+START=HEAD
+
+while getopts ":hn:s:" OPTION ; do
+  case $OPTION in
+    h)  usage
+        exit 0
+        ;;
+    n) REVISIONS=$OPTARG
+        ;;
+    s) START=$OPTARG
+        ;;
+    ?)  echo "Illegal option: -$OPTARG"
+        usage
+        exit 1
+        ;;
+  esac
+done
+
+rolls $REVISIONS $START