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 c=\${2:-master}; r=\$(git describe --all --abbrev=40 --match 'basepoints/gcc-[0-9]*' \$c | 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}); else c=\${1:-master}; r=\$(git describe --all --match 'basepoints/gcc-[0-9]*' \$c | sed -n 's,^\\(tags/\\)\\?basepoints/gcc-\\([0-9]\\+\\)-\\([0-9]\\+\\)-g[0-9a-f]*\$,r\\2-\\3,p;s,^\\(tags/\\)\\?basepoints/gcc-\\([0-9]\\+\\)\$,r\\2-0,p'); fi; if test -n \$r; then o=\$(git config --get gcc-config.upstream); rr=\$(echo \$r | sed -n 's,^r\\([0-9]\\+\\)-[0-9]\\+\\(-g[0-9a-f]\\+\\)\\?\$,\\1,p'); if git rev-parse --verify --quiet \${o:-origin}/releases/gcc-\$rr >/dev/null; then m=releases/gcc-\$rr; else m=master; fi; git merge-base --is-ancestor \$c \${o:-origin}/\$m && \echo \${r}; 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]*\$,\\2,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 use "(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.*$'
  32
  33 set_user=$(git config --get "user.name")
  34 set_email=$(git config --get "user.email")
  35
  36 if [ "x$set_user" = "x" ]
  37 then
  38     # Try to guess the user's name by looking it up in the password file
  39     new_user=$(getent passwd $(whoami) | awk -F: '{ print $5 }')
  40     if [ "x$new_user" = "x" ]
  41     then
  42        new_user="(no default)"
  43     fi
  44 else
  45     new_user=$set_user
  46 fi
  47 ask "Your name" "${new_user}" new_user
  48 if [ "x$new_user" = "x(no default)" ]
  49 then
  50     echo "Cannot continue, git needs to record your name against commits"
  51     exit 1
  52 fi
  53
  54 if [ "x$set_email" = "x" ]
  55 then
  56     new_email="(no_default)"
  57 else
  58     new_email=$set_email
  59 fi
  60
  61 ask "Your email address (for git commits)" "${new_email}" new_email
  62 if [ "x$new_email" = "x(no default)" ]
  63 then
  64     echo "Cannot continue, git needs to record your email address against commits"
  65     exit 1
  66 fi
  67
  68 if [ "x$set_user" != "x$new_user" ]
  69 then
  70     git config "user.name" "$new_user"
  71 fi
  72
  73 if [ "x$set_email" != "x$new_email" ]
  74 then
  75     git config "user.email" "$new_email"
  76 fi
  77
  78 upstream=$(git config --get "gcc-config.upstream")
  79 if [ "x$upstream" = "x" ]
  80 then
  81     upstream="origin"
  82 fi
  83 ask "Local name for upstream repository" "origin" upstream
  84 git config "gcc-config.upstream" "$upstream"
  85
  86 remote_id=$(git config --get "gcc-config.user")
  87 if [ "x$remote_id" = "x" ]
  88 then
  89     # See if the url specifies the remote user name.
  90     url=$(git config --get "remote.$upstream.url")
  91     if [ "x$url" = "x" ]
  92     then
  93         # This is a pure guess, but for many people it might be OK.
  94         remote_id=$(whoami)
  95     else
  96         remote_id=$(echo $url | sed -r "s|^.*ssh://(.+)@gcc.gnu.org.*$|\1|")
  97         if [ x$remote_id = x$url ]
  98         then
  99             remote_id=$(whoami)
 100         fi
 101     fi
 102 fi
 103 ask "Account name on gcc.gnu.org (for your personal branches area)" $remote_id remote_id
 104 git config "gcc-config.user" "$remote_id"
 105
 106 old_pfx=$(git config --get "gcc-config.userpfx")
 107 if [ "x$old_pfx" = "x" ]
 108 then
 109     old_pfx="me"
 110 fi
 111 echo "Local branch prefix for personal branches you want to share"
 112 echo "(local branches starting <prefix>/ can be pushed directly to your"
 113 ask "personal area on the gcc server)" $old_pfx new_pfx
 114 git config "gcc-config.userpfx" "$new_pfx"
 115
 116 echo "Setting up tracking for personal namespace $remote_id in remotes/$upstream/${new_pfx}"
 117 git config --replace-all "remote.${upstream}.fetch" "+refs/users/${remote_id}/heads/*:refs/remotes/${upstream}/${new_pfx}/*" ":refs/remotes/${upstream}/${old_pfx}/"
 118 git config --replace-all "remote.${upstream}.fetch" "+refs/users/${remote_id}/tags/*:refs/tags/${new_pfx}/*" ":refs/tags/${old_pfx}/"
 119
 120 push_rule=$(git config --get "remote.${upstream}.push")
 121 if [ "x$push_rule" != "x" ]
 122 then
 123     echo "***********************************************"
 124     echo "                  Warning"
 125     echo "***********************************************"
 126     echo
 127     echo "Old versions of this script used to add custom push"
 128     echo "rules to simplify pushing to personal branches."
 129     echo "Your configuration contains such rules, but we no-longer"
 130     echo "recommend doing this."
 131     echo
 132     echo "To delete these rules run:"
 133     echo "  git config --unset-all \"remote.${upstream}.push\""
 134 fi