mirror of
https://github.com/facebook/sapling.git
synced 2024-10-09 16:31:02 +03:00
6f3cfe5684
Summary:
Recently I had this scm prompt:
{F64910275}
This is not user friendly. I suggest to output at most one remote bookmark
Also this diff copies `seq.py` from upstream hg repo
Test Plan: Run scm prompt tests on devserver and mac and with '--shell=zsh'
Reviewers: rmcelroy
Reviewed By: rmcelroy
Subscribers: simonfar, wez, mjpieters, #sourcecontrol
Differential Revision: https://phabricator.intern.facebook.com/D4197242
Signature: t1:4197242:1483466446:cd1fe943dc99fde0600a4e20994fa4b0f971f72a
215 lines
6.9 KiB
Bash
215 lines
6.9 KiB
Bash
# Copyright (C) 2015 Facebook, Inc
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# Maintained by Ryan McElroy <rm@fb.com>
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#
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# Inspiration and derivation from git-completion.bash by Shawn O. Pearce.
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#
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# Distributed under the GNU General Public License, version 2.0.
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#
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# ========================================================================
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#
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# Quickly determines the and emits some useful information about the state
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# of your current mercurial or git repository. Useful for PS1 prompts.
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#
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# Design goals:
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# * Useful for both git and mercurial
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# * Portable to both zsh and bash
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# * Portable to both Mac (BSD-based utils) and Linux (GNU-based utils)
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# * As fast as possible given the above constraints (few command invocations)
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# * Avoids invoking git or mercurial, which may be slow on large repositories
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#
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# To use from zsh:
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#
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# NOTE! the single quotes are important; if you use double quotes
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# then the prompt won't change when you chdir or checkout different
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# branches!
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#
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# setopt PROMPT_SUBST
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# source /path/to/scm-prompt
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# export PS1='$(_scm_prompt)$USER@%m:%~%% '
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#
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# To use from bash:
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#
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# source /path/to/scm-prompt
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# export PS1="\$(_scm_prompt)\u@\h:\W\$ "
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#
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# NOTE! You *EITHER* need to single-quote the whole thing *OR* back-slash
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# the $(...) (as above), but not both. Which one you use depends on if
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# you need the rest of your PS1 to interpolate variables.
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#
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# You may additionally pass a format-string to the scm_info command. This
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# allows you to control the format of the prompt string without interfering
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# with the prompt outside of a mercurial or git repository. For example:
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#
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# $(_scm_prompt "%s")
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#
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# The default format string is " (%s)" (note the space)
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#
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# Notes to developers:
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#
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# * Aliases can screw up the default commands; use "command" to prevent this
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#
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# =========================================================================
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#
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_find_most_relevant_remotebookmark()
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{
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# We don't want to output all remote bookmarks because there can be many
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# of them. This function finds the most relevant remote bookmark using this
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# algorithm:
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# 1. If 'master' or '@' bookmark is available then output it
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# 2. Sort remote bookmarks and output the first in reverse sorted order (
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# it's a heuristic that tries to find the newest bookmark. It will work well
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# with bookmarks like 'release20160926' and 'release20161010').
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relevantbook=$(command grep -m1 -E -o "^[^/]+/(master|@)$" <<< "$1")
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if [[ -n $relevantbook ]]; then
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command echo $relevantbook
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return 0
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fi
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command echo "$(command sort -r <<< "$1" | command head -n 1)"
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}
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_scm_prompt()
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{
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local dir git hg fmt
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# Defeault to be compatable with __git_ps1. In particular:
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# - provide a space for the user so that they don't have to have
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# random extra spaces in their prompt when not in a repo
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# - provide parens so it's differentiated from other crap in their prompt
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fmt=${1:-' (%s)'}
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# find out if we're in a git or hg repo by looking for the control dir
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dir=$PWD
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while : ; do
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if test -d "$dir/.git" ; then
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git=$dir
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break
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elif test -d "$dir/.hg" ; then
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hg=$dir
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break
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fi
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test "$dir" = / && break
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# portable "realpath" equivalent
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dir=$(cd -P "$dir/.." && command echo "$PWD")
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done
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local br
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if test -n "$hg" ; then
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local extra
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if [[ -f "$hg/.hg/bisect.state" ]]; then
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extra="|BISECT"
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elif [[ -f "$hg/.hg/histedit-state" ]]; then
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extra="|HISTEDIT"
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elif [[ -f "$hg/.hg/graftstate" ]]; then
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extra="|GRAFT"
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elif [[ -f "$hg/.hg/unshelverebasestate" ]]; then
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extra="|UNSHELVE"
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elif [[ -f "$hg/.hg/rebasestate" ]]; then
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extra="|REBASE"
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elif [[ -d "$hg/.hg/merge" ]]; then
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extra="|MERGE"
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fi
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local dirstate=$(test -f "$hg/.hg/dirstate" && \
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command hexdump -vn 20 -e '1/1 "%02x"' "$hg/.hg/dirstate" || \
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command echo "empty")
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local active="$hg/.hg/bookmarks.current"
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if [[ -f "$active" ]]; then
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br=$(command cat "$active")
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# check to see if active bookmark needs update (eg, moved after pull)
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local marks="$hg/.hg/bookmarks"
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if [[ -f "$hg/.hg/sharedpath" && -f "$hg/.hg/shared" ]] &&
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command grep -q '^bookmarks$' "$hg/.hg/shared"; then
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marks="$(command cat $hg/.hg/sharedpath)/bookmarks"
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fi
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if [[ -z "$extra" ]] && [[ -f "$marks" ]]; then
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local markstate=$(command grep " $br$" "$marks" | \
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command cut -f 1 -d ' ')
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if [[ $markstate != "$dirstate" ]]; then
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extra="|UPDATE_NEEDED"
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fi
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fi
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else
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br=$(command echo "$dirstate" | command cut -c 1-7)
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fi
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local remote="$hg/.hg/remotenames"
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if [[ -f "$remote" ]]; then
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local allremotemarks="$(command grep "^$dirstate bookmarks" "$remote" | \
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command cut -f 3 -d ' ')"
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if [[ -n "$allremotemarks" ]]; then
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local remotemark="$(_find_most_relevant_remotebookmark "$allremotemarks")"
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if [[ -n "$remotemark" ]]; then
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br="$br|$remotemark..."
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fi
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fi
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fi
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local branch
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if [[ -f "$hg/.hg/branch" ]]; then
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branch=$(command cat "$hg/.hg/branch")
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if [[ $branch != "default" ]]; then
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br="$br|$branch"
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fi
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fi
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br="$br$extra"
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elif test -n "$git" ; then
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if test -f "$git/.git/HEAD" ; then
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read br < "$git/.git/HEAD"
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case $br in
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ref:\ refs/heads/*) br=${br#ref: refs/heads/} ;;
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*) br=$(command echo "$br" | command cut -c 1-7) ;;
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esac
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if [[ -f "$git/.git/rebase-merge/interactive" ]]; then
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b="$(command cat "$git/.git/rebase-merge/head-name")"
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b=${b#refs/heads/}
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br="$br|REBASE-i|$b"
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elif [[ -d "$git/.git/rebase-merge" ]]; then
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b="$(command cat "$git/.git/rebase-merge/head-name")"
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b=${b#refs/heads/}
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br="$br|REBASE-m|$b"
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else
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if [[ -d "$git/.git/rebase-apply" ]]; then
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if [[ -f "$git/.git/rebase-apply/rebasing" ]]; then
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b="$(command cat "$git/.git/rebase-apply/head-name")"
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b=${b#refs/heads/}
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br="$br|REBASE|$b"
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elif [[ -f "$git/.git/rebase-apply/applying" ]]; then
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br="$br|AM"
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else
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br="$br|AM/REBASE"
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fi
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elif [[ -f "$git/.git/CHERRY_PICK_HEAD" ]]; then
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br="$br|CHERRY-PICKING"
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elif [[ -f "$git/.git/REVERT_HEAD" ]]; then
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br="$br|REVERTING"
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elif [[ -f "$git/.git/MERGE_HEAD" ]]; then
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br="$br|MERGE"
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elif [[ -f "$git/.git/BISECT_LOG" ]]; then
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br="$br|BISECT"
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fi
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fi
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fi
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fi
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if [[ -n "$br" ]]; then
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printf "$fmt" "$br"
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fi
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}
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#
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# Backwards-compatibility layer for odl scm-prompt script
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#
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# Older versions of this file at Facebook used a longer function name.
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# These versions also included support for an environmental directive
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# called $WANT_OLD_SCM_PROMPT. Support this to remain compatible.
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#
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_dotfiles_scm_info() {
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local fmt
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if [[ -z "$fmt" ]]; then
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if [[ -n "$WANT_OLD_SCM_PROMPT" ]]; then
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fmt="%s"
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fi
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fi
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_scm_prompt $fmt
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}
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