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 quotearg() {
  46         printf '%s' "$1" | sed 's/\(['\''!]\)/'\'\\\\\\1\''/g'
  47 }
  48
  49 head="$(git symbolic-ref -q HEAD || :)"
  50 head="${head#refs/heads/}"
  51
  52 [ -n "$name" ] ||
  53         name="${head:-HEAD}"
  54 name="$(verify_topgit_branch "$name")"
  55 base_rev="$(git rev-parse --short --verify "refs/$topbases/$name" -- 2>/dev/null)" ||
  56         die "not a TopGit-controlled branch"
  57
  58 if [ -n "$head_from" ] && [ "$name" != "$head" ]; then
  59         die "$head_from makes only sense for the current branch"
  60 fi
  61
  62
  63
  64 # We now collect the rest of the code in this file into a function
  65 # so we can redirect the output to the pager.
  66 output()
  67 {
  68
  69 # put out the commit message
  70 # and put an empty line out, if the last one in the message was not an empty line
  71 # and put out "---" if the commit message does not have one yet
  72 cat_file "refs/heads/$name:.topmsg" $head_from |
  73         awk '
  74 /^---/ {
  75     has_3dash=1;
  76 }
  77        {
  78     need_empty = 1;
  79     if ($0 == "")
  80         need_empty = 0;
  81     print;
  82 }
  83 END    {
  84     if (need_empty)
  85         print "";
  86     if (!has_3dash)
  87         print "---";
  88 }
  89 '
  90
  91 b_tree=$(pretty_tree "$name" -b)
  92 t_tree=$(pretty_tree "$name" $head_from)
  93
  94 if [ $b_tree = $t_tree ]; then
  95         echo "No changes."
  96 else
  97         hasdd=
  98         for a; do
  99                 [ "$a" != "--" ] || { hasdd=1; break; }
 100         done
 101         if [ -z "$hasdd" ]; then
 102                 git diff-tree -p --stat --summary ${binary:+--binary} "$@" $b_tree $t_tree
 103         else
 104                 cmd="git diff-tree -p --stat --summary ${binary:+--binary}"
 105                 while [ $# -gt 0 -a "$1" != "--" ]; do
 106                         cmd="$cmd '$(quotearg "$1")'"
 107                         shift
 108                 done
 109                 cmd="$cmd '$(quotearg "$b_tree")' '$(quotearg "$t_tree")'"
 110                 while [ $# -gt 0 ]; do
 111                         cmd="$cmd '$(quotearg "$1")'"
 112                         shift
 113                 done
 114                 eval "$cmd"
 115         fi
 116 fi
 117
 118 echo '-- '
 119 depon="$(cat_file "refs/heads/$name:.topdeps" $head_from 2>/dev/null | paste -s -d ' ' -)"
 120 echo "$tgname: ($base_rev..) $name${depon:+ (depends on: $depon)}"
 121 branch_contains "refs/heads/$name" "refs/$topbases/$name" ||
 122         echo "$tgname: The patch is out-of-date wrt. the base! Run \`$tgdisplay update\`."
 123
 124 }
 125 USE_PAGER_TYPE=diff
 126 page output "$@"
 127 # ... and then we run it through the pager with the page function
 128
 129 # vim:noet