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