tg-patch.sh

   1 #!/bin/sh
   2 # TopGit - A different patch queue manager
   3 # (c) Petr Baudis <pasky@suse.cz>  2008
   4 # GPLv2
   5
   6 name=
   7
   8 head_from=
   9
  10
  11 ## Parse options
  12
  13 while [ -n "$1" ]; do
  14         arg="$1"; shift
  15         case "$arg" in
  16         -i|-w)
  17                 [ -z "$head_from" ] || die "-i and -w are mutually exclusive"
  18                 head_from="$arg";;
  19         -*)
  20                 echo "Usage: tg [...] patch [-i | -w] [<name>]" >&2
  21                 exit 1;;
  22         *)
  23                 [ -z "$name" ] || die "name already specified ($name)"
  24                 name="$arg";;
  25         esac
  26 done
  27
  28 head="$(git symbolic-ref HEAD)"
  29 head="${head#refs/heads/}"
  30
  31 [ -n "$name" ] ||
  32         name="$head"
  33 base_rev="$(git rev-parse --short --verify "refs/top-bases/$name" 2>/dev/null)" ||
  34         die "not a TopGit-controlled branch"
  35
  36 if [ -n "$head_from" ] && [ "$name" != "$head" ]; then
  37         die "$head_from makes only sense for the current branch"
  38 fi
  39
  40
  41
  42 setup_pager
  43 # We now collect the rest of the code in this file into a block
  44 # so we can redirect the output to the pager.
  45 {
  46
  47 # put out the commit message
  48 # and put an empty line out, if the last one in the message was not an empty line
  49 # and put out "---" if the commit message does not have one yet
  50 cat_file "$name:.topmsg" $head_from |
  51         awk '
  52 /^---/ {
  53     has_3dash=1;
  54 }
  55        {
  56     need_empty = 1;
  57     if ($0 == "")
  58         need_empty = 0;
  59     print;
  60 }
  61 END    {
  62     if (need_empty)
  63         print "";
  64     if (!has_3dash)
  65         print "---";
  66 }
  67 '
  68
  69 b_tree=$(pretty_tree "$name" -b)
  70 t_tree=$(pretty_tree "$name" $head_from)
  71
  72 if [ $b_tree = $t_tree ]; then
  73         echo "No changes."
  74 else
  75         git diff-tree -p --stat $b_tree $t_tree
  76 fi
  77
  78 echo '-- '
  79 echo "tg: ($base_rev..) $name (depends on: $(cat_file "$name:.topdeps" $head_from | paste -s -d ' ' -))"
  80 branch_contains "$name" "$base_rev" ||
  81         echo "tg: The patch is out-of-date wrt. the base! Run \`$tg update\`."
  82
  83 } | "$TG_PAGER"
  84 # ... and then we pipe all the output through the pager
  85
  86 # vim:noet