gitdiffbinstat/gitdiffbinstat.sh

   1 #!/bin/bash
   2
   3
   4 #    gitdiffbinstat - gets a git diff --shortstat-like output for changed binary files
   5 #    Copyright (C) 2012  Matthias Krüger
   6
   7 #    This program is free software; you can redistribute it and/or modify
   8 #    it under the terms of the GNU General Public License as published by
   9 #    the Free Software Foundation; either version 1, or (at your option)
  10 #    any later version.
  11
  12 #    This program is distributed in the hope that it will be useful,
  13 #    but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 #    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 #    GNU General Public License for more details.
  16
  17 #    You should have received a copy of the GNU General Public License
  18 #    along with this program; if not, write to the Free Software
  19 #    Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA  02110-1301 USA
  20
  21 # in order to avoid conflicts when starting the script twice, get unix time + nanoseconds and
  22 # append them to the diffstat file
  23
  24 timestamp=`date +%s%N`
  25
  26 obj=$1
  27 diffstat=/tmp/gitdiffstat.$timestamp
  28
  29 # If no argument is given, print this how-to.
  30 if [ -z "$obj" ] ; then
  31         echo "Usage: \"gitdiffbinstat [<commit/branch/tag>]\""
  32         echo "Make sure to be in a git repo!"
  33         exit 1
  34 fi
  35
  36 # Check if we are actually in a git repo
  37 gitcheck=`git tag |& grep -o "fatal:\ Not\ a\ git\ repository\ "`
  38 if [ "$gitcheck" ] ; then
  39         echo "fatal: Not a git repository!"
  40         echo "Make sure to be in a git repo!"
  41         exit 1
  42 fi
  43
  44 # get currend branch
  45 curbranch=`git branch  | awk '/^\*\ /' | sed -e 's/\*\ //'`
  46 # get current rev hash
  47 curcommit=`git rev-parse HEAD`
  48 # print what we compare in   git diff
  49 echo " $obj -> $curbranch"
  50 echo " $obj -> $curcommit"
  51
  52
  53 # get the actuall diff we process
  54 git diff $obj --stat ./ | awk '/>/' > $diffstat
  55
  56
  57 # generate our own  git diff --shortstat
  58 gst=`git diff $obj --shortstat ./`
  59 gstins=`echo $gst | awk '{print $4}'`
  60 gstdels=`echo $gst | awk '{print $6}'`
  61 gstchval=`expr $gstins - $gstdels`
  62 gstchfiles=`echo $gst | awk '{print $1}'`
  63
  64 if [ "$gstchfiles" == 1 ] ; then
  65         gstfiles=file
  66 else
  67         gstfiles=files
  68 fi
  69 # say file/files correctly if we have only 0, one or several files
  70 if [ "$gstchval" -gt 0 ] ; then
  71         echo -e " $gstchfiles $gstfiles changed, \e[033;32m$gstins \e[0minsertions(\e[033;32m+\e[0m), \e[033;31m$gstdels\e[0m deletions(\e[033;31m-\e[0m) (\e[033;32m+$gstchval lines\e[0m)"
  72 else
  73         echo -e " $gstchfiles $gstfiles changed, \e[033;32m$gstins \e[0minsertions(\e[033;32m+\e[0m), \e[033;31m$gstdels\e[0m deletions(\e[033;31m-\e[0m) (\e[033;31m$gstchval lines\e[0m)"
  74 fi
  75
  76 # If there are no changes, exit
  77 checksum=`cat $diffstat | wc -l`
  78 if [ $checksum == 0 ] ; then
  79         echo " No binary files changed, exiting..."
  80         rm $diffstat
  81         exit 1
  82 fi
  83
  84
  85
  86 # size (b) of all bin files of obj
  87 old=`awk '{ sum+=$4} END {print sum}' $diffstat`
  88 # size (b) of all bin files of curbranch/curcommit
  89 new=`awk '{ sum+=$6} END {print sum}' $diffstat`
  90 # amount of changed files
  91 files=`wc -l $diffstat | awk '{print $1}'`
  92
  93
  94
  95
  96 # "Bin 0 -> x bytes" :  file has been added
  97 newfiles=`awk '/Bin\ 0/' $diffstat | wc -l`
  98 # "Bin x -> 0 bytes" : file has been deleted
  99 delfiles=`awk '/->\ 0\ bytes/' $diffstat | wc -l`
 100 # all files - new files - deleted files  = modified files
 101 binchval=`expr $newfiles - $delfiles`
 102 chfiles=`expr $files - $binchval`
 103
 104 if [ "$binchval" -gt 0 ] ; then
 105         echo -e " Binary files: $chfiles modified, \e[033;32m$newfiles\e[0m added, \e[033;31m$delfiles\e[0m deleted. (\e[033;32m+$binchval files\e[0m)"
 106 else
 107         echo -e " Binary files: $chfiles modified, \e[033;32m$newfiles\e[0m added, \e[033;31m$delfiles\e[0m deleted. (\e[033;31m$binchval files\e[0m)"
 108 fi
 109
 110
 111 # find out how many bytes bigger/smaller the repo got
 112 changeval=`calc -p "$new-$old"`
 113 # print the result in different colors :)
 114
 115 # say file/files correctly if we have only 0, one or several files
 116 if [ "$files" == 1 ] ; then
 117         somefiles=file
 118 else
 119         somefiles=files
 120 fi
 121
 122 if [ "$changeval" -gt 0 ] ; then
 123         echo -e " $files binary $somefiles changed, \e[033;31m$old bytes\e[0m -> \e[033;32m$new bytes\e[0m (\e[033;32m+$changeval bytes\e[0m)"
 124         else
 125         changeval1=`echo "$changeval" | sed s/-//`
 126         echo -e " $files binary $somefiles changed, \e[033;31m$old bytes\e[0m -> \e[033;32m$new bytes\e[0m (\e[033;31m-$changeval1 bytes\e[0m)"
 127 fi
 128
 129 # rather ugly foo to get nicer output numbers
 130 newunit=b
 131 newval=$new
 132 ((newkilo=$new/1024))
 133 if [ ! "$newkilo" == 0 ] ; then
 134         newunit=kb
 135         newval=$newkilo
 136         ((newmega=$newkilo/1024))
 137         if [ ! "$newmega" == 0 ] ; then
 138                 newunit=Mb
 139                 newval=$newmega
 140                 ((newgiga=$newmega/1024))
 141                 if [ ! "$newgiga" == 0 ] ; then
 142                         newunit=Gb
 143                         newval=$newgiga
 144                 fi
 145         fi
 146 fi
 147
 148
 149 oldunit=b
 150 oldval=$old
 151 ((oldkilo=$old/1024))
 152 if [ ! "$oldkilo" == 0 ] ; then
 153         oldunit=kb
 154         oldval=$oldkilo
 155         ((oldmega=$oldkilo/1024))
 156         if [ ! "$oldmega" == 0 ] ; then
 157                 oldunit=Mb
 158                 oldval=$oldmega
 159                 ((oldgiga=$oldmega/1024))
 160                 if [ ! "$oldgiga" == 0 ] ; then
 161                         oldunit=Gb
 162                         oldval=$oldgiga
 163                 fi
 164         fi
 165 fi
 166
 167
 168 if [ "$changeval" -gt 0 ] ; then
 169         changevalunit=b
 170         changevalval=$changeval
 171         ((changevalkilo=$changeval/1024))
 172         if [ ! "$changevalkilo" == 0 ] ; then
 173                 changevalunit=kb
 174                 changevalval=$changevalkilo
 175                 ((changevalmega=$changevalkilo/1024))
 176                 if [ ! "$changevalmega" == 0 ] ; then
 177                         changevalunit=Mb
 178                         changevalval=$changevalmega
 179                         ((changevalgiga=$changevalmega/1024))
 180                         if [ ! "$changevalgiga" == 0 ] ; then
 181                                 changedvalunit=Gb
 182                                 changevalval=$changvalgiga
 183                         fi
 184                 fi
 185         fi
 186         echo -e " $files binary $somefiles changed, \e[033;31m$oldval $oldunit\e[0m -> \e[033;32m$newval$newunit\e[0m (\e[033;32m+$changevalval$changevalunit\e[0m)"
 187
 188 else
 189         changeval=`echo "$changeval" | sed s/-//`
 190         changevalunit=b
 191         changevalval=$changeval
 192         ((changevalkilo=$changeval/1024))
 193         if [ ! "$changevalkilo" == 0 ] ; then
 194                 changevalunit=kb
 195                 changevalval=$changevalkilo
 196                 ((changevalmega=$changevalkilo/1024))
 197                 if [ ! "$changevalmega" == 0 ] ; then
 198                         changevalunit=Mb
 199                         changevalval=$changevalmega
 200                         ((changevalgiga=$changevalmega/1024))
 201                         if [ ! "$changevalgiga" == 0 ] ; then
 202                                 changedvalunit=Gb
 203                                 changevalval=$changvalgiga
 204                         fi
 205                 fi
 206         fi
 207         echo -e " $files binary $somefiles changed, \e[033;31m$oldval $oldunit\e[0m -> \e[033;32m$newval $newunit\e[0m (\e[033;31m-$changevalval $changevalunit\e[0m)"
 208
 209 fi
 210 # remove the diffstat, we don't need it anymore
 211 rm $diffstat