update-vim.sh

   1 #!/bin/sh
   2 #
   3 # by Markus Heidelberg, 2009
   4 #
   5 # Fetch official bugfix patches, apply and commit them.
   6 #
   7 # Author and committer name and email are extracted from the "From:" line of
   8 # the "email" part of the patch file.
   9 # The author and committer date is currently the date, which is written behind
  10 # version.c from the "patch" part of the patch file.
  11
  12 get_author_name() {
  13         sed -n 's/^From: \(.*\) <.*/\1/p' "$1"
  14 }
  15
  16 get_author_email() {
  17        sed -n 's/^From: .* <\(.*\)>.*/\1/p' "$1"
  18 }
  19
  20 get_author_date() {
  21         # The date in the patch doesn't contain an UTC offset, so the current
  22         # time zone would be used, which would lead to different commit SHA1s
  23         # depending on the time zone, where the patch is applied. Hence we
  24         # simply use +0000, though it may not match with the patch author.
  25         sed -n 's/^--- src\/version\.c  \(.*\)/\1 +0000/p' "$1"
  26 }
  27
  28 apply_patch() {
  29         #
  30         # Apply the patch
  31         #
  32
  33         interdiff -q /dev/null "$1" | git apply --index -p0
  34
  35         #
  36         # Prepare the commit message
  37         #
  38
  39         # Summary (subject)
  40
  41         # Patch number in brackets
  42         NUM=$(sed -n 's/^Patch \([0-9a-z\.]*\).*/[\1]/p' "$1")
  43
  44         # First line of the problem description
  45         SUM=$(sed -n 's/^Problem:[      ]*\(.*\)/\1/p' "$1")
  46
  47         # Description (body)
  48
  49         # Problem
  50         PROB=$(sed -n '/^Problem:.*/,/^Solution:.*/{s/^Solution:.*//;t;p}' "$1")
  51
  52         # Solution
  53         SOL=$(sed -n '/^Solution:.*/,/^Files:.*/{s/^Files:.*//;t;p}' "$1")
  54
  55         # Original patch subject (with "extra", "after", ...)
  56         SUBJ=$(sed -n '/^Patch [0-9a-z\.]*.*/p' "$1")
  57
  58         #
  59         # Convert tabs to spaces in the commit message and commit
  60         #
  61
  62         printf "%s %s\n\n%s\n\n%s\n\n%s" \
  63                 "$NUM" "$SUM" "$PROB" "$SOL" "$SUBJ" \
  64                 | expand | git commit -F-
  65 }
  66
  67 get_vim_version_major() {
  68         sed -n 's/^#define VIM_VERSION_MAJOR[   ]\+\([0-9]*\)/\1/p' src/version.h
  69 }
  70
  71 get_vim_version_minor() {
  72         sed -n 's/^#define VIM_VERSION_MINOR[   ]\+\([0-9]*\)/\1/p' src/version.h
  73 }
  74
  75 get_vim_version_patch() {
  76         sed -n '/included_patches\[\]/,/^[      ]*\([0-9]\+\).*/{s/^[   ]*\([0-9]\+\).*/\1/;T;p}' src/version.c
  77 }
  78
  79 get_vim_next_version() {
  80         printf "%u.%u.%03u\n"   "$(get_vim_version_major)" \
  81                                 "$(get_vim_version_minor)" \
  82                                 "$(expr $(get_vim_version_patch) + 1)"
  83 }
  84
  85 ### main ###
  86
  87 SERVER_PATCH_DIR="http://ftp.vim.org/pub/vim/patches/$(get_vim_version_major).$(get_vim_version_minor)"
  88 PATCH=$(get_vim_next_version)
  89
  90 while wget $SERVER_PATCH_DIR/$PATCH 2>/dev/null; do
  91         echo "Applying patch $(basename $PATCH)"
  92
  93         GIT_AUTHOR_NAME="$(get_author_name $PATCH)"
  94         GIT_AUTHOR_EMAIL="$(get_author_email $PATCH)"
  95         GIT_AUTHOR_DATE="$(get_author_date $PATCH)"
  96         GIT_COMMITTER_NAME="$GIT_AUTHOR_NAME"
  97         GIT_COMMITTER_EMAIL="$GIT_AUTHOR_EMAIL"
  98         GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
  99         export GIT_AUTHOR_NAME GIT_AUTHOR_EMAIL GIT_AUTHOR_DATE
 100         export GIT_COMMITTER_NAME GIT_COMMITTER_EMAIL GIT_COMMITTER_DATE
 101
 102         apply_patch $PATCH
 103         rm $PATCH
 104
 105         PATCH=$(get_vim_next_version)
 106 done