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         # TODO: UTC offset of the current time zone is used, this leads to
  22         # different SHA1s dependent on the time zone
  23         sed -n 's/^--- src\/version\.c  \(.*\)/\1/p' "$1"
  24 }
  25
  26 apply_patch() {
  27         #
  28         # Apply the patch
  29         #
  30
  31         interdiff -q /dev/null "$1" | git apply --index -p0
  32
  33         #
  34         # Prepare the commit message
  35         #
  36
  37         # Summary (subject)
  38
  39         # Patch number in brackets
  40         NUM=$(sed -n 's/^Patch \([0-9a-z\.]*\).*/[\1]/p' "$1")
  41
  42         # First line of the problem description
  43         SUM=$(sed -n 's/^Problem:[      ]*\(.*\)/\1/p' "$1")
  44
  45         # Description (body)
  46
  47         # Problem
  48         PROB=$(sed -n '/^Problem:.*/,/^Solution:.*/{s/^Solution:.*//;t;p}' "$1")
  49
  50         # Solution
  51         SOL=$(sed -n '/^Solution:.*/,/^Files:.*/{s/^Files:.*//;t;p}' "$1")
  52
  53         # Original patch subject (with "extra", "after", ...)
  54         SUBJ=$(sed -n '/^Patch [0-9a-z\.]*.*/ p' "$1")
  55
  56         #
  57         # Convert tabs to spaces in the commit message and commit
  58         #
  59
  60         printf "%s %s\n\n%s\n\n%s\n\n%s" \
  61                 "$NUM" "$SUM" "$PROB" "$SOL" "$SUBJ" \
  62                 | expand | git commit -F-
  63 }
  64
  65 get_vim_version_major() {
  66         sed -n 's/^#define VIM_VERSION_MAJOR[   ]\+\([0-9]*\)/\1/p' src/version.h
  67 }
  68
  69 get_vim_version_minor() {
  70         sed -n 's/^#define VIM_VERSION_MINOR[   ]\+\([0-9]*\)/\1/p' src/version.h
  71 }
  72
  73 get_vim_version_patch() {
  74         sed -n '/included_patches\[\]/,/^[      ]*\([0-9]\+\).*/{s/^[   ]*\([0-9]\+\).*/\1/;T;p}' src/version.c
  75 }
  76
  77 get_vim_next_version() {
  78         printf "%u.%u.%03u\n"   "$(get_vim_version_major)" \
  79                                 "$(get_vim_version_minor)" \
  80                                 "$(expr $(get_vim_version_patch) + 1)"
  81 }
  82
  83 ### main ###
  84
  85 SERVER_PATCH_DIR="http://ftp.vim.org/pub/vim/patches/$(get_vim_version_major).$(get_vim_version_minor)"
  86 PATCH=$(get_vim_next_version)
  87
  88 while wget $SERVER_PATCH_DIR/$PATCH 2>/dev/null; do
  89         echo "Applying patch $(basename $PATCH)"
  90
  91         export GIT_AUTHOR_NAME="$(get_author_name $PATCH)"
  92         export GIT_AUTHOR_EMAIL="$(get_author_email $PATCH)"
  93         export GIT_AUTHOR_DATE="$(get_author_date $PATCH)"
  94         export GIT_COMMITTER_NAME="$GIT_AUTHOR_NAME"
  95         export GIT_COMMITTER_EMAIL="$GIT_AUTHOR_EMAIL"
  96         export GIT_COMMITTER_DATE="$GIT_AUTHOR_DATE"
  97
  98         apply_patch $PATCH
  99         rm $PATCH
 100
 101         PATCH=$(get_vim_next_version)
 102 done