tg-patch.sh

   1 #!/bin/sh
   2 # TopGit - A different patch queue manager
   3 # Copyright (C) Petr Baudis <pasky@suse.cz>  2008
   4 # All rights reserved.
   5 # GPLv2
   6
   7 name=
   8 head_from=
   9 binary=
  10
  11 ## Parse options
  12
  13 while [ -n "$1" ]; do
  14         arg="$1"
  15         case "$arg" in
  16         --)
  17                 case "$2" in
  18                 -*)
  19                         shift; break;;
  20                 *)
  21                         break;;
  22                 esac;;
  23         -|-h|--help)
  24                 echo "Usage: ${tgname:-tg} [...] patch [-i | -w] [--binary] [<name>] [--] [<git-diff-tree-option>...]" >&2
  25                 exit 1;;
  26         -i|-w)
  27                 [ -z "$head_from" ] || die "-i and -w are mutually exclusive"
  28                 head_from="$arg";;
  29         --binary)
  30                 binary=1;;
  31         -?*)
  32                 if test="$(verify_topgit_branch "$arg" -f)"; then
  33                         [ -z "$name" ] || die "name already specified ($name)"
  34                         name="$arg"
  35                 else
  36                         break
  37                 fi;;
  38         *)
  39                 [ -z "$name" ] || die "name already specified ($name)"
  40                 name="$arg";;
  41         esac
  42         shift
  43 done
  44
  45 head="$(git symbolic-ref -q HEAD)" || :
  46 head="${head#refs/heads/}"
  47
  48 [ -n "$name" ] ||
  49         name="${head:-HEAD}"
  50 name="$(verify_topgit_branch "$name")"
  51 base_rev="$(git rev-parse --short --verify "refs/$topbases/$name" -- 2>/dev/null)" ||
  52         die "not a TopGit-controlled branch"
  53
  54 if [ -n "$head_from" ] && [ "$name" != "$head" ]; then
  55         die "$head_from makes only sense for the current branch"
  56 fi
  57
  58
  59
  60 # We now collect the rest of the code in this file into a function
  61 # so we can redirect the output to the pager.
  62 output()
  63 {
  64
  65 # put out the commit message
  66 # and put an empty line out, if the last one in the message was not an empty line
  67 # and put out "---" if the commit message does not have one yet
  68 cat_file "refs/heads/$name:.topmsg" $head_from |
  69         awk '
  70 /^---/ {
  71     has_3dash=1;
  72 }
  73        {
  74     need_empty = 1;
  75     if ($0 == "")
  76         need_empty = 0;
  77     print;
  78 }
  79 END    {
  80     if (need_empty)
  81         print "";
  82     if (!has_3dash)
  83         print "---";
  84 }
  85 '
  86
  87 b_tree=$(pretty_tree "$name" -b)
  88 t_tree=$(pretty_tree "$name" $head_from)
  89
  90 if [ $b_tree = $t_tree ]; then
  91         echo "No changes."
  92 else
  93         hasdd=
  94         for a; do
  95                 [ "$a" != "--" ] || { hasdd=1; break; }
  96         done
  97         if [ -z "$hasdd" ]; then
  98                 git diff-tree -p --stat --summary ${binary:+--binary} "$@" $b_tree $t_tree
  99         else
 100                 cmd="git diff-tree -p --stat --summary ${binary:+--binary}"
 101                 while [ $# -gt 0 -a "$1" != "--" ]; do
 102                         cmd="$cmd $(quotearg "$1")"
 103                         shift
 104                 done
 105                 cmd="$cmd $(quotearg "$b_tree") $(quotearg "$t_tree")"
 106                 while [ $# -gt 0 ]; do
 107                         cmd="$cmd $(quotearg "$1")"
 108                         shift
 109                 done
 110                 eval "$cmd"
 111         fi
 112 fi
 113
 114 echo '-- '
 115 depon="$(cat_file "refs/heads/$name:.topdeps" $head_from 2>/dev/null | paste -s -d ' ' -)"
 116 echo "$tgname: ($base_rev..) $name${depon:+ (depends on: $depon)}"
 117 branch_contains "refs/heads/$name" "refs/$topbases/$name" ||
 118         echo "$tgname: The patch is out-of-date wrt. the base! Run \`$tgdisplay update\`."
 119
 120 }
 121 USE_PAGER_TYPE=diff
 122 page output "$@"
 123 # ... and then we run it through the pager with the page function
 124
 125 # vim:noet