rev-parse: add --prefix option
[gitweb.git] / contrib / completion / git-prompt.sh
index 5ab488cd65a40abeb211ed5934bd4741972cd556..eaf5c369aacde207cbad4c9df9574e7b26634bb7 100644 (file)
 #    1) Copy this file to somewhere (e.g. ~/.git-prompt.sh).
 #    2) Add the following line to your .bashrc/.zshrc:
 #        source ~/.git-prompt.sh
-#    3) Change your PS1 to also show the current branch:
-#         Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
-#         ZSH:  PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
+#    3a) Change your PS1 to call __git_ps1 as
+#        command-substitution:
+#        Bash: PS1='[\u@\h \W$(__git_ps1 " (%s)")]\$ '
+#        ZSH:  PS1='[%n@%m %c$(__git_ps1 " (%s)")]\$ '
+#        the optional argument will be used as format string.
+#    3b) Alternatively, if you are using bash, __git_ps1 can be
+#        used for PROMPT_COMMAND with two parameters, <pre> and
+#        <post>, which are strings you would put in $PS1 before
+#        and after the status string generated by the git-prompt
+#        machinery.  e.g.
+#           PROMPT_COMMAND='__git_ps1 "\u@\h:\w" "\\\$ "'
+#        will show username, at-sign, host, colon, cwd, then
+#        various status string, followed by dollar and SP, as
+#        your prompt.
+#        Optionally, you can supply a third argument with a printf
+#        format string to finetune the output of the branch status
 #
 # The argument to __git_ps1 will be displayed only if you are currently
 # in a git repository.  The %s token will be the name of the current
 #
 # If you would like to see if there're untracked files, then you can set
 # GIT_PS1_SHOWUNTRACKEDFILES to a nonempty value. If there're untracked
-# files, then a '%' will be shown next to the branch name.
+# files, then a '%' will be shown next to the branch name.  You can
+# configure this per-repository with the bash.showUntrackedFiles
+# variable, which defaults to true once GIT_PS1_SHOWUNTRACKEDFILES is
+# enabled.
 #
 # If you would like to see the difference between HEAD and its upstream,
 # set GIT_PS1_SHOWUPSTREAM="auto".  A "<" indicates you are behind, ">"
 #     branch        relative to newer tag or branch (master~4)
 #     describe      relative to older annotated tag (v1.6.3.1-13-gdd42c2f)
 #     default       exactly matching tag
+#
+# If you would like a colored hint about the current dirty state, set
+# GIT_PS1_SHOWCOLORHINTS to a nonempty value. The colors are based on
+# the colored output of "git status -sb".
 
 # __gitdir accepts 0 or 1 arguments (i.e., location)
 # returns location of .git repo
@@ -204,21 +224,60 @@ __git_ps1_show_upstream ()
 
 
 # __git_ps1 accepts 0 or 1 arguments (i.e., format string)
-# returns text to add to bash PS1 prompt (includes branch name)
+# when called from PS1 using command substitution
+# in this mode it prints text to add to bash PS1 prompt (includes branch name)
+#
+# __git_ps1 requires 2 or 3 arguments when called from PROMPT_COMMAND (pc)
+# in that case it _sets_ PS1. The arguments are parts of a PS1 string.
+# when two arguments are given, the first is prepended and the second appended
+# to the state string when assigned to PS1.
+# The optional third parameter will be used as printf format string to further
+# customize the output of the git-status string.
+# In this mode you can request colored hints using GIT_PS1_SHOWCOLORHINTS=true
 __git_ps1 ()
 {
+       local pcmode=no
+       local detached=no
+       local ps1pc_start='\u@\h:\w '
+       local ps1pc_end='\$ '
+       local printf_format=' (%s)'
+
+       case "$#" in
+               2|3)    pcmode=yes
+                       ps1pc_start="$1"
+                       ps1pc_end="$2"
+                       printf_format="${3:-$printf_format}"
+               ;;
+               0|1)    printf_format="${1:-$printf_format}"
+               ;;
+               *)      return
+               ;;
+       esac
+
        local g="$(__gitdir)"
-       if [ -n "$g" ]; then
+       if [ -z "$g" ]; then
+               if [ $pcmode = yes ]; then
+                       #In PC mode PS1 always needs to be set
+                       PS1="$ps1pc_start$ps1pc_end"
+               fi
+       else
                local r=""
                local b=""
-               if [ -f "$g/rebase-merge/interactive" ]; then
-                       r="|REBASE-i"
-                       b="$(cat "$g/rebase-merge/head-name")"
-               elif [ -d "$g/rebase-merge" ]; then
-                       r="|REBASE-m"
+               local step=""
+               local total=""
+               if [ -d "$g/rebase-merge" ]; then
                        b="$(cat "$g/rebase-merge/head-name")"
+                       step=$(cat "$g/rebase-merge/msgnum")
+                       total=$(cat "$g/rebase-merge/end")
+                       if [ -f "$g/rebase-merge/interactive" ]; then
+                               r="|REBASE-i"
+                       else
+                               r="|REBASE-m"
+                       fi
                else
                        if [ -d "$g/rebase-apply" ]; then
+                               step=$(cat "$g/rebase-apply/next")
+                               total=$(cat "$g/rebase-apply/last")
                                if [ -f "$g/rebase-apply/rebasing" ]; then
                                        r="|REBASE"
                                elif [ -f "$g/rebase-apply/applying" ]; then
@@ -230,12 +289,14 @@ __git_ps1 ()
                                r="|MERGING"
                        elif [ -f "$g/CHERRY_PICK_HEAD" ]; then
                                r="|CHERRY-PICKING"
+                       elif [ -f "$g/REVERT_HEAD" ]; then
+                               r="|REVERTING"
                        elif [ -f "$g/BISECT_LOG" ]; then
                                r="|BISECTING"
                        fi
 
                        b="$(git symbolic-ref HEAD 2>/dev/null)" || {
-
+                               detached=yes
                                b="$(
                                case "${GIT_PS1_DESCRIBE_STYLE-}" in
                                (contains)
@@ -254,6 +315,10 @@ __git_ps1 ()
                        }
                fi
 
+               if [ -n "$step" ] && [ -n "$total" ]; then
+                       r="$r $step/$total"
+               fi
+
                local w=""
                local i=""
                local s=""
@@ -268,24 +333,25 @@ __git_ps1 ()
                                b="GIT_DIR!"
                        fi
                elif [ "true" = "$(git rev-parse --is-inside-work-tree 2>/dev/null)" ]; then
-                       if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ]; then
-                               if [ "$(git config --bool bash.showDirtyState)" != "false" ]; then
-                                       git diff --no-ext-diff --quiet --exit-code || w="*"
-                                       if git rev-parse --quiet --verify HEAD >/dev/null; then
-                                               git diff-index --cached --quiet HEAD -- || i="+"
-                                       else
-                                               i="#"
-                                       fi
+                       if [ -n "${GIT_PS1_SHOWDIRTYSTATE-}" ] &&
+                          [ "$(git config --bool bash.showDirtyState)" != "false" ]
+                       then
+                               git diff --no-ext-diff --quiet --exit-code || w="*"
+                               if git rev-parse --quiet --verify HEAD >/dev/null; then
+                                       git diff-index --cached --quiet HEAD -- || i="+"
+                               else
+                                       i="#"
                                fi
                        fi
                        if [ -n "${GIT_PS1_SHOWSTASHSTATE-}" ]; then
                                git rev-parse --verify refs/stash >/dev/null 2>&1 && s="$"
                        fi
 
-                       if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ]; then
-                               if [ -n "$(git ls-files --others --exclude-standard)" ]; then
-                                       u="%"
-                               fi
+                       if [ -n "${GIT_PS1_SHOWUNTRACKEDFILES-}" ] &&
+                          [ "$(git config --bool bash.showUntrackedFiles)" != "false" ] &&
+                          [ -n "$(git ls-files --others --exclude-standard)" ]
+                       then
+                               u="%${ZSH_VERSION+%}"
                        fi
 
                        if [ -n "${GIT_PS1_SHOWUPSTREAM-}" ]; then
@@ -294,6 +360,53 @@ __git_ps1 ()
                fi
 
                local f="$w$i$s$u"
-               printf -- "${1:- (%s)}" "$c${b##refs/heads/}${f:+ $f}$r$p"
+               if [ $pcmode = yes ]; then
+                       local gitstring=
+                       if [ -n "${GIT_PS1_SHOWCOLORHINTS-}" ]; then
+                               local c_red='\e[31m'
+                               local c_green='\e[32m'
+                               local c_lblue='\e[1;34m'
+                               local c_clear='\e[0m'
+                               local bad_color=$c_red
+                               local ok_color=$c_green
+                               local branch_color="$c_clear"
+                               local flags_color="$c_lblue"
+                               local branchstring="$c${b##refs/heads/}"
+
+                               if [ $detached = no ]; then
+                                       branch_color="$ok_color"
+                               else
+                                       branch_color="$bad_color"
+                               fi
+
+                               # Setting gitstring directly with \[ and \] around colors
+                               # is necessary to prevent wrapping issues!
+                               gitstring="\[$branch_color\]$branchstring\[$c_clear\]"
+
+                               if [ -n "$w$i$s$u$r$p" ]; then
+                                       gitstring="$gitstring "
+                               fi
+                               if [ "$w" = "*" ]; then
+                                       gitstring="$gitstring\[$bad_color\]$w"
+                               fi
+                               if [ -n "$i" ]; then
+                                       gitstring="$gitstring\[$ok_color\]$i"
+                               fi
+                               if [ -n "$s" ]; then
+                                       gitstring="$gitstring\[$flags_color\]$s"
+                               fi
+                               if [ -n "$u" ]; then
+                                       gitstring="$gitstring\[$bad_color\]$u"
+                               fi
+                               gitstring="$gitstring\[$c_clear\]$r$p"
+                       else
+                               gitstring="$c${b##refs/heads/}${f:+ $f}$r$p"
+                       fi
+                       gitstring=$(printf -- "$printf_format" "$gitstring")
+                       PS1="$ps1pc_start$gitstring$ps1pc_end"
+               else
+                       # NO color option unless in PROMPT_COMMAND mode
+                       printf -- "$printf_format" "$c${b##refs/heads/}${f:+ $f}$r$p"
+               fi
        fi
 }