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 topic=
   9 diff_opts=
  10 diff_committed_only=yes # will be unset for index/worktree
  11
  12
  13 ## Parse options
  14
  15 while [ -n "$1" ]; do
  16         arg="$1"; shift
  17         case "$arg" in
  18         -i)
  19                 topic='(i)'
  20                 diff_opts="$diff_opts --cached";
  21                 diff_committed_only=;;
  22         -w)
  23                 topic='(w)'
  24                 diff_committed_only=;;
  25         -*)
  26                 echo "Usage: tg [...] patch [-i | -w] [NAME]" >&2
  27                 exit 1;;
  28         *)
  29                 [ -z "$name" ] || die "name already specified ($name)"
  30                 name="$arg";;
  31         esac
  32 done
  33
  34
  35 [ -n "$name"  -a  -z "$diff_committed_only" ]  &&
  36         die "-i/-w are mutually exclusive with NAME"
  37
  38 [ -n "$name" ] || name="$(git symbolic-ref HEAD | sed 's#^refs/\(heads\|top-bases\)/##')"
  39 base_rev="$(git rev-parse --short --verify "refs/top-bases/$name" 2>/dev/null)" ||
  40         die "not a TopGit-controlled branch"
  41
  42 # if not index/worktree, topic is current branch
  43 [ -z "$topic" ] && topic="$name"
  44
  45
  46
  47 setup_pager
  48
  49 cat_file "$topic:.topmsg"
  50 echo
  51 [ -n "$(git grep $diff_opts '^[-]--' ${diff_committed_only:+"$name"} -- ".topmsg")" ] || echo '---'
  52
  53 # Evil obnoxious hack to work around the lack of git diff --exclude
  54 git_is_stupid="$(mktemp -t tg-patch-changes.XXXXXX)"
  55 git diff --name-only $diff_opts "$base_rev" ${diff_committed_only:+"$name"} -- |
  56         fgrep -vx ".topdeps" |
  57         fgrep -vx ".topmsg" >"$git_is_stupid" || : # fgrep likes to fail randomly?
  58 if [ -s "$git_is_stupid" ]; then
  59         cat "$git_is_stupid" | xargs git diff --patch-with-stat $diff_opts "$base_rev" ${diff_committed_only:+"$name"} --
  60 else
  61         echo "No changes."
  62 fi
  63 rm "$git_is_stupid"
  64
  65 echo '-- '
  66 echo "tg: ($base_rev..) $name (depends on: $(cat_file "$topic:.topdeps" | paste -s -d' '))"
  67 branch_contains "$name" "$base_rev" ||
  68         echo "tg: The patch is out-of-date wrt. the base! Run \`$tg update\`."
  69
  70 # vim:noet