guilt-graph

   1 #!/bin/bash
   2 #
   3 # Copyright (c) Josef "Jeff" Sipek, 2007
   4 #
   5
   6 USAGE="[<patchname>]"
   7 . guilt
   8
   9 if [ $# -gt 1 ]; then
  10         usage
  11 fi
  12
  13 patchname="$1"
  14
  15 bottom=`head -1 < "$applied" | cut -d: -f1`
  16 base=`git-rev-parse $bottom^`
  17
  18 if [ -z "$patchname" ]; then
  19         top=`git-rev-parse HEAD`
  20 else
  21         top=`grep "^[0-9a-f]\{40\}:$patchname" "$applied" | cut -d: -f1`
  22         if [ -z "$top" ]; then
  23                 die "Cannot find patch '$patchname'. Is it applied?"
  24         fi
  25 fi
  26
  27 function getfiles
  28 {
  29         git-diff-tree -r "$1^" "$1" | tr '\t' ' ' | cut -d' ' -f6
  30 }
  31
  32 cache="$GUILT_DIR/$branch/.graphcache.$$"
  33 mkdir "$cache"
  34
  35 echo "digraph G {"
  36
  37 current="$top"
  38
  39 while [ "$current" != "$base" ]; do
  40         echo "# checking rev $current"
  41
  42         echo -n '' > "$cache/dep"
  43
  44         getfiles $current | while read f; do
  45                 # hash the filename
  46                 fh=`echo "$f" | sha1sum | cut -d' ' -f1`
  47                 if [ -e "$cache/$fh" ]; then
  48                         # ok, something already touched this file before us
  49                         cat "$cache/$fh" >> "$cache/dep"
  50                 fi
  51                 echo "$current" > "$cache/$fh"
  52         done
  53
  54         cat "$cache/dep" | sort | uniq | while read h; do
  55                 echo "  \"${h:0:8}\" -> \"${current:0:8}\"; // ?"
  56         done
  57
  58         current=`git-rev-parse $current^`
  59 done
  60
  61 echo "}"
  62
  63 rm -rf "$cache"