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     echo -n $question "["$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() { if test \${1:-no} = --full; then r=\$(git describe --all --abbrev=40 --match 'basepoints/gcc-[0-9]*' \${2:-master} | sed -n 's,^tags/basepoints/gcc-,r,p'); expr match \${r:-no} '^r[0-9]\\+\$' >/dev/null && r=\${r}-0-g\$(git rev-parse \${2:-master}); test -n \$r && echo \${r}; else git describe --all --match 'basepoints/gcc-[0-9]*' \${1:-master} | sed -n 's,^tags/basepoints/gcc-\\([0-9]\\+\\)-\\([0-9]\\+\\)-g[0-9a-f]*\$,r\\1-\\2,p;s,^tags/basepoints/gcc-\\([0-9]\\+\\)\$,r\\1-0,p'; fi; }; f"
  26 git config alias.gcc-undescr \!"f() { o=\$(git config --get gcc-config.upstream); r=\$(echo \$1 | sed -n 's,^r\\([0-9]\\+\\)-[0-9]\\+\$,\\1,p'); n=\$(echo \$1 | sed -n 's,^r[0-9]\\+-\\([0-9]\\+\\)\$,\\1,p'); test -z \$r && echo Invalid id \$1 && exit 1; h=\$(git rev-parse --verify --quiet \${o:-origin}/releases/gcc-\$r); test -z \$h && h=\$(git rev-parse --verify --quiet \${o:-origin}/master); p=\$(git describe --all --match 'basepoints/gcc-'\$r \$h | sed -n 's,^tags/basepoints/gcc-[0-9]\\+-\\([0-9]\\+\\)-g[0-9a-f]*\$,\\1,p;s,^tags/basepoints/gcc-[0-9]\\+\$,0,p'); git rev-parse --verify \$h~\$(expr \$p - \$n); }; f"
  27
  28 # Make diff on MD files uses "(define" as a function marker.
  29 # Use this in conjunction with a .gitattributes file containing
  30 # *.md    diff=md
  31 git config diff.md.xfuncname '^\(define.*$'
  32
  33 upstream=`git config --get "gcc-config.upstream"`
  34 if [ "x$upstream" = "x" ]
  35 then
  36     upstream="origin"
  37 fi
  38 ask "Local name for upstream repository" "origin" upstream
  39 git config "gcc-config.upstream" "$upstream"
  40
  41 remote_id=`git config --get "gcc-config.user"`
  42 if [ "x$remote_id" = "x" ]
  43 then
  44     # See if the url specifies the remote user name.
  45     url=`git config --get "remote.$upstream.url"`
  46     if [ "x$url" = "x" ]
  47     then
  48         # This is a pure guess, but for many people it might be OK.
  49         remote_id=`whoami`
  50     else
  51         remote_id=`echo $url | sed -r "s|^.*ssh://(.+)@gcc.gnu.org.*$|\1|"`
  52         if [ x$remote_id = x$url ]
  53         then
  54             remote_id=`whoami`
  55         fi
  56     fi
  57 fi
  58 ask "Account name on gcc.gnu.org" $remote_id remote_id
  59 git config "gcc-config.user" "$remote_id"
  60
  61 old_pfx=`git config --get "gcc-config.userpfx"`
  62 if [ "x$old_pfx" = "x" ]
  63 then
  64     old_pfx="me"
  65 fi
  66 echo "Local branch prefix for personal branches you want to share"
  67 echo "(local branches starting <prefix>/ can be pushed directly to your"
  68 ask "personal area on the gcc server)" $old_pfx new_pfx
  69 git config "gcc-config.userpfx" "$new_pfx"
  70
  71 # This entry needs to come last, so unset it now, then reset it after the updates.
  72 git config --unset "remote.${upstream}.push" "refs/heads/\\*:refs/heads/\\*"
  73 echo "Setting up tracking for personal namespace $remote_id in remotes/$upstream/${new_pfx}"
  74 git config --replace-all "remote.${upstream}.fetch" "+refs/users/${remote_id}/heads/*:refs/remotes/${upstream}/${new_pfx}/*" ":refs/remotes/${upstream}/${old_pfx}/"
  75 git config --replace-all "remote.${upstream}.fetch" "+refs/users/${remote_id}/tags/*:refs/tags/${new_pfx}/*" ":refs/tags/${old_pfx}/"
  76 git config --replace-all "remote.${upstream}.push" "refs/heads/${new_pfx}/*:refs/users/${remote_id}/heads/*" "^\+?refs/heads/${old_pfx}/"
  77 # Re-add the line deleted above.
  78 git config --add "remote.${upstream}.push" "refs/heads/*:refs/heads/*"