GIT prompt

.bashrc_local

function __ps1_git () {                                                                                                 
 # preserve exit status                                                                                                 
 local exit=$?                                                                                                          
 local repo_info                                                                                                        
 repo_info="$(git rev-parse --git-dir --is-inside-git-dir --is-inside-work-tree 2>/dev/null)"                           
 if [ -z "$repo_info" ]; then                                                                                           
  return $exit                                                                                                          
 fi                                                                                                                     
                                                                                                                        
 local inside_worktree="${repo_info##*$'\n'}"                                                                           
 repo_info="${repo_info%$'\n'*}"                                                                                        
 local inside_gitdir="${repo_info##*$'\n'}"                                                                             
 local gitdir="${repo_info%$'\n'*}"                                                                                     
                                                                                                                        
 echo -en "\001\033[1;33m\002["                                                                                         
 if [ "true" = "$inside_gitdir" ]; then                                                                                 
  echo -n ".git"                                                                                                        
 elif [ "true" = "$inside_worktree" ]; then                                                                             
  if [[ -z $(git status --porcelain) ]]; then                                                                           
   echo -ne "\001\033[0;32m\002"                                                                                        
  else                                                                                                                  
   echo -ne "\001\033[1;31m\002"                                                                                        
  fi                                                                                                                    
  BRANCH=`git branch 2>/dev/null | sed -e '/^[^*]/d' -e 's/* \(.*\)/\1/'`                                               
  echo -n $BRANCH                                                                                                       
  REMOTE=`git for-each-ref --format='%(upstream:short)' $(git symbolic-ref -q HEAD)`                                    
  if [ "$REMOTE" != "" ]; then                                                                                          
   AHEAD=`git rev-list $REMOTE..HEAD | wc -l` # when git 1.8 becomes available: --count instead of wc                   
   BEHIND=`git rev-list HEAD..$REMOTE | wc -l`                                                                          
   if [ "$BEHIND" != "0" ]; then echo -ne "\001\033[1;31m\002-$BEHIND"; fi                                              
   if [ "$AHEAD" != "0" ]; then echo -ne "\001\033[1;32m\002+$AHEAD"; fi                                                
  fi                                                                                                                    
  local extmode=""                                                                                                      
  if [ -d "$gitdir/rebase-merge" ]; then                                                                                
   extmode="rebase"                                                                                                     
  elif [ -d "$gitdir/rebase-apply" ]; then                                                                              
   extmode="rebase"                                                                                                     
  elif [ -f "$gitdir/MERGE_HEAD" ]; then                                                                                
   extmode="merge"                                                                                                      
  elif [ -f "$gitdir/CHERRY_PICK_HEAD" ]; then                                                                          
   extmode="cherry"                                                                                                     
  elif [ -f "$gitdir/REVERT_HEAD" ]; then                                                                               
   extmode="revert"                                                                                                     
  elif [ -f "$gitdir/BISECT_LOG" ]; then                                                                                
   extmode="bisect"                                                                                                     
  fi                                                                                                                    
  if [ ! -z "$extmode" ]; then                                                                                          
   echo -en "\001\033[1;33m\002|$extmode"                                                                               
  fi                                                                                                                    
  if [ "bisect" = "$extmode" ]; then                                                                                    
   echo -en "\001\033[1;34m\002:`git bisect visualize --oneline 2>/dev/null | wc -l`"                                   
  fi                                                                                                                    
 fi                                                                                                                     
 echo -en "\001\033[1;33m\002] "                                                                                        
}                                                                                                                       
                                                                                                                        
PS1="\[\033[1;31m\]\h \[\033[1;34m\]\W \`if [ \$? = 0 ]; then echo '\[\033[1;32m\]:)'; else echo '\[\033[1;31m\]:('; fi\` \`__ps1_git\`\[\033[0m\]\$ "
function gitoff () {                                                                                                    
 PS1="\[\033[1;31m\]\h \[\033[1;34m\]\W \`if [ \$? = 0 ]; then echo '\[\033[1;32m\]:)'; else echo '\[\033[1;31m\]:('; fi\` \[\033[0m\]\$ "
}