guilt-graph

   1 #!/bin/sh
   2 #
   3 # Copyright (c) Josef "Jeff" Sipek, 2007-2013
   4 #
   5
   6 USAGE="[<patchname>]"
   7 if [ -z "$GUILT_VERSION" ]; then
   8         echo "Invoking `basename "$0"` directly is no longer supported." >&2
   9         exit 1
  10 fi
  11
  12 _main() {
  13
  14 if [ $# -gt 1 ]; then
  15         usage
  16 fi
  17
  18 patchname="$1"
  19
  20 bottompatch=$(head_n 1 < "$applied")
  21 if [ -z "$bottompatch" ]; then
  22         echo "No patch applied." >&2
  23         exit 1
  24 fi
  25
  26 base=`git rev-parse "refs/patches/${branch}/${bottompatch}^"`
  27
  28 if [ -z "$patchname" ]; then
  29         top=`git rev-parse HEAD`
  30 else
  31         top=`grep "^$patchname$" "$applied"`
  32         if [ -z "$top" ]; then
  33                 die "Cannot find patch '$patchname'. Is it applied?"
  34         fi
  35 fi
  36
  37 getfiles()
  38 {
  39         git diff-tree -r "$1^" "$1" | tr '\t' ' ' | cut -d' ' -f6
  40 }
  41
  42 cache="$GUILT_DIR/$branch/.graphcache.$$"
  43 mkdir "$cache"
  44 trap "rm -rf \"$cache\"" 0
  45
  46 disp "digraph G {"
  47
  48 current="$top"
  49
  50 safebranch=`echo "$branch"|sed 's%/%\\\\/%g'`
  51 while [ "$current" != "$base" ]; do
  52         pname=`git show-ref | sed -n -e "
  53 /^$current refs\/patches\/$safebranch/ {
  54         s:^$current refs/patches/$branch/::
  55         p
  56         q
  57 }"`
  58         [ -z "$pname" ] && pname="?"
  59
  60         pname="`printf \"%s\" \"$pname\" | sed 's/\"/\\\\\"/g'`"
  61
  62         disp "# checking rev $current"
  63         disp "  \"$current\" [label=\"$pname\"]"
  64
  65         # new "hash table"
  66         rm -f "$cache/dep"
  67         touch "$cache/dep"
  68
  69         getfiles $current | while read f; do
  70                 # hash the filename
  71                 fh=`echo "$f" | sha1 | cut -d' ' -f1`
  72                 if [ -e "$cache/$fh" ]; then
  73                         # ok, something already touched this file before us
  74                         cat "$cache/$fh" >> "$cache/dep"
  75                 fi
  76                 echo "$current" > "$cache/$fh"
  77         done
  78
  79         sort -u "$cache/dep" | while read h; do
  80                 disp "  \"$h\" -> \"$current\"; // ?"
  81         done
  82
  83         current=`git rev-parse $current^`
  84 done
  85
  86 disp "}"
  87
  88 }