contrib/gcc-git-customization.sh

   1 #!/bin/sh
   2
   3 # Script to add some local git customizations suitable for working
   4 # with the GCC git repository
   5
   6 ask () {
   7     question=$1
   8     default=$2
   9     var=$3
  10     printf "%s [%s]? " "$question" "$default"
  11     read answer
  12     if [ "x$answer" = "x" ]
  13     then
  14         eval $var=\$default
  15     else
  16         eval $var=\$answer
  17     fi
  18 }
  19
  20 # Add a git command to find the git commit equivalent to legacy SVN revision NNN
  21 git config alias.svn-rev '!f() { rev=$1; shift; git log --all --grep="^From-SVN: r\\?$rev\\b" "${@}"; } ; f'
  22
  23 # Add git commands to convert git commit to monotonically increasing revision number
  24 # and vice versa
  25 git config alias.gcc-descr '!f() { "`git rev-parse --show-toplevel`/contrib/git-descr.sh" $@; } ; f'
  26 git config alias.gcc-undescr '!f() { "`git rev-parse --show-toplevel`/contrib/git-undescr.sh" $@; } ; f'
  27
  28 git config alias.gcc-verify '!f() { "`git rev-parse --show-toplevel`/contrib/gcc-changelog/git_check_commit.py" $@; } ; f'
  29 git config alias.gcc-backport '!f() { "`git rev-parse --show-toplevel`/contrib/git-backport.py" $@; } ; f'
  30 git config alias.gcc-fix-changelog '!f() { "`git rev-parse --show-toplevel`/contrib/git-fix-changelog.py" $@; } ; f'
  31 git config alias.gcc-mklog '!f() { "`git rev-parse --show-toplevel`/contrib/mklog.py" $@; } ; f'
  32 git config alias.gcc-commit-mklog '!f() { "`git rev-parse --show-toplevel`/contrib/git-commit-mklog.py" "$@"; }; f'
  33 git config alias.gcc-style '!f() {
  34     check=`git rev-parse --show-toplevel`/contrib/check_GNU_style.py;
  35     arg=; if [ $# -ge 1 ] && [ "$1" != "-f" ]; then arg="$1"; shift;
  36     elif [ $# -eq 3 ]; then arg="$3"; set -- "$1" "$2"; fi
  37     git show $arg | $check "$@" -; }; f'
  38
  39 # Make diff on MD files use "(define" as a function marker.
  40 # Use this in conjunction with a .gitattributes file containing
  41 # *.md    diff=md
  42 git config diff.md.xfuncname '^\(define.*$'
  43
  44 # Tell git send-email where patches go.
  45 # ??? Maybe also set sendemail.tocmd to guess from MAINTAINERS?
  46 git config sendemail.to 'gcc-patches@gcc.gnu.org'
  47
  48 set_user=$(git config --get "user.name")
  49 set_email=$(git config --get "user.email")
  50
  51 if [ "x$set_user" = "x" ]
  52 then
  53     # Try to guess the user's name by looking it up in the password file
  54     if type getent >/dev/null 2>&1; then
  55       new_user=$(getent passwd $(whoami) | awk -F: '{ print $5 }')
  56     elif [ $(uname -s) = Darwin ]; then
  57       new_user=$(id -F 2>/dev/null)
  58     fi
  59     if [ "x$new_user" = "x" ]
  60     then
  61        new_user="(no default)"
  62     fi
  63 else
  64     new_user=$set_user
  65 fi
  66 ask "Your name" "${new_user}" new_user
  67 if [ "x$new_user" = "x(no default)" ]
  68 then
  69     echo "Cannot continue, git needs to record your name against commits"
  70     exit 1
  71 fi
  72
  73 if [ "x$set_email" = "x" ]
  74 then
  75     new_email="(no_default)"
  76 else
  77     new_email=$set_email
  78 fi
  79
  80 ask "Your email address (for git commits)" "${new_email}" new_email
  81 if [ "x$new_email" = "x(no default)" ]
  82 then
  83     echo "Cannot continue, git needs to record your email address against commits"
  84     exit 1
  85 fi
  86
  87 if [ "x$set_user" != "x$new_user" ]
  88 then
  89     git config "user.name" "$new_user"
  90 fi
  91
  92 if [ "x$set_email" != "x$new_email" ]
  93 then
  94     git config "user.email" "$new_email"
  95 fi
  96
  97 upstream=$(git config --get "gcc-config.upstream")
  98 if [ "x$upstream" = "x" ]
  99 then
 100     upstream="origin"
 101 fi
 102 ask "Local name for upstream repository" "origin" upstream
 103
 104 v=$(git config --get-all "remote.${upstream}.fetch")
 105 if [ "x$v" = "x" ]
 106 then
 107     echo "Remote $upstream does not seem to exist as a remote"
 108     exit 1
 109 fi
 110 git config "gcc-config.upstream" "$upstream"
 111
 112 remote_id=$(git config --get "gcc-config.user")
 113 if [ "x$remote_id" = "x" ]
 114 then
 115     # See if the url specifies the remote user name.
 116     url=$(git config --get "remote.$upstream.url")
 117     if [ "x$url" = "x" ]
 118     then
 119         # This is a pure guess, but for many people it might be OK.
 120         remote_id=$(whoami)
 121     else
 122         remote_id=$(echo $url | sed 's|^.*ssh://\(..*\)@gcc.gnu.org.*$|\1|')
 123         if [ x$remote_id = x$url ]
 124         then
 125             remote_id=$(whoami)
 126         fi
 127     fi
 128 fi
 129
 130 ask "Account name on gcc.gnu.org (for your personal branches area)" "$remote_id" remote_id
 131 git config "gcc-config.user" "$remote_id"
 132
 133 old_pfx=$(git config --get "gcc-config.userpfx")
 134 if [ "x$old_pfx" = "x" ]
 135 then
 136     old_pfx="me"
 137 fi
 138 echo
 139 echo "Local branch prefix for personal branches you want to share"
 140 echo "(local branches starting <prefix>/ can be pushed directly to your"
 141 ask "personal area on the gcc server)" $old_pfx new_pfx
 142 git config "gcc-config.userpfx" "$new_pfx"
 143
 144 echo
 145 ask "Install prepare-commit-msg git hook for 'git commit-mklog' alias" yes dohook
 146 if [ "x$dohook" = xyes ]; then
 147     hookdir=`git rev-parse --git-path hooks 2>/dev/null`
 148     if [ $? -eq 0 ]; then
 149         if [ -f "$hookdir/prepare-commit-msg" ]; then
 150             echo " Moving existing prepare-commit-msg hook to prepare-commit-msg.bak"
 151             mv "$hookdir/prepare-commit-msg" "$hookdir/prepare-commit-msg.bak"
 152         fi
 153         install -c "`git rev-parse --show-toplevel`/contrib/prepare-commit-msg" "$hookdir"
 154     else
 155         echo " `git --version` is too old, cannot find hooks dir"
 156     fi
 157 fi
 158
 159 # Scan the existing settings to see if there are any we need to rewrite.
 160 vendors=$(git config --get-all "remote.${upstream}.fetch" "refs/vendors/" | sed 's:.*refs/vendors/\([^/][^/]*\)/.*:\1:' | sort | uniq)
 161 url=$(git config --get "remote.${upstream}.url")
 162 pushurl=$(git config --get "remote.${upstream}.pushurl")
 163 for v in $vendors
 164 do
 165     echo "Migrating vendor \"$v\" to new remote \"vendors/$v\""
 166     git config --unset-all "remote.${upstream}.fetch" "refs/vendors/$v/"
 167     git config --unset-all "remote.${upstream}.push" "refs/vendors/$v/"
 168     git config "remote.vendors/${v}.url" "${url}"
 169     if [ "x$pushurl" != "x" ]
 170     then
 171         git config "remote.vendors/${v}.pushurl" "${pushurl}"
 172     fi
 173     git config --add "remote.vendors/${v}.fetch" "+refs/vendors/$v/heads/*:refs/remotes/vendors/${v}/*"
 174     git config --add "remote.vendors/${v}.fetch" "+refs/vendors/$v/tags/*:refs/tags/vendors/${v}/*"
 175 done
 176
 177 # Convert the remote 'pfx' to users/pfx to avoid problems with ambiguous refs
 178 # on user branches
 179 old_remote=$(git config --get "remote.${old_pfx}.url")
 180 if [ -n "${old_remote}" ]
 181 then
 182     echo "Migrating remote \"${old_pfx}\" to new remote \"users/${new_pfx}\""
 183     # Create a dummy fetch rule that will cause the subsequent prune to remove the old remote refs.
 184     git config --replace-all "remote.${old_pfx}.fetch" "+refs/empty/*:refs/remotes/${old_pfx}/*"
 185     # Remove any remotes
 186     git remote prune ${old_pfx}
 187     git config --remove-section "remote.${old_pfx}"
 188     for br in $(git branch --list "${old_pfx}/*")
 189     do
 190         old_remote=$(git config --get "branch.${br}.remote")
 191         if [ "${old_remote}" = "${old_pfx}" ]
 192         then
 193             git config "branch.${br}.remote" "users/${new_pfx}"
 194         fi
 195     done
 196 fi
 197
 198 echo "Setting up tracking for personal namespace $remote_id in remotes/users/${new_pfx}"
 199 git config "remote.users/${new_pfx}.url" "${url}"
 200 if [ "x$pushurl" != "x" ]
 201 then
 202     git config "remote.users/${new_pfx}.pushurl" "${pushurl}"
 203 fi
 204 git config --replace-all "remote.users/${new_pfx}.fetch" "+refs/users/${remote_id}/heads/*:refs/remotes/users/${new_pfx}/*" "refs/users/${remote_id}/heads/"
 205 git config --replace-all "remote.users/${new_pfx}.fetch" "+refs/users/${remote_id}/tags/*:refs/tags/users/${new_pfx}/*" "refs/users/${remote_id}/tags/"
 206 git config --replace-all "remote.users/${new_pfx}.push" "refs/heads/${new_pfx}/*:refs/users/${remote_id}/heads/*" "refs/users/${remote_id}"
 207
 208 if [ "$old_pfx" != "$new_pfx" -a "$old_pfx" != "${upstream}" ]
 209 then
 210     git config --remove-section "remote.${old_pfx}"
 211 fi
 212
 213 git config --unset-all "remote.${upstream}.fetch" "refs/users/${remote_id}/"
 214 git config --unset-all "remote.${upstream}.push" "refs/users/${remote_id}/"
 215
 216 git fetch "users/${new_pfx}"