agnoster: cut down on fork/execs improve performance when not in a repo (#6210)
* agnoster: improve perf with use of $jobstates (zsh/parameter module) This saves multiple fork/execs (for the subshell and wc) each time the prompt is rendered * agnoster: compute git repo_path only when in a git repo this avoids needlessly invoking git twice every time we render the prompt * agnoster: avoid subshell when rendering prompt Rather than forking a subshell to print the prompt, construct it incrementally by appending to $PROMPT. v2: fix incorrect CURRENT_BG v3: fix bzr and hg prompting Thanks @mcornella for the help.
This commit is contained in:
Andrew Baumann
Marc Cornellà
parent
3dab7e46e8
commit
fbcda4d5a9
46
themes/agnoster.zsh-theme
Normal file → Executable file
46
themes/agnoster.zsh-theme
Normal file → Executable file
@ -29,6 +29,7 @@
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# A few utility functions to make it easy and re-usable to draw segmented prompts
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CURRENT_BG='NONE'
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zmodload zsh/parameter
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# Special Powerline characters
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@ -55,23 +56,23 @@ prompt_segment() {
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[[ -n $1 ]] && bg="%K{$1}" || bg="%k"
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[[ -n $2 ]] && fg="%F{$2}" || fg="%f"
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if [[ $CURRENT_BG != 'NONE' && $1 != $CURRENT_BG ]]; then
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echo -n " %{$bg%F{$CURRENT_BG}%}$SEGMENT_SEPARATOR%{$fg%} "
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PROMPT+=" %{$bg%F{$CURRENT_BG}%}$SEGMENT_SEPARATOR%{$fg%} "
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else
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echo -n "%{$bg%}%{$fg%} "
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PROMPT+="%{$bg%}%{$fg%} "
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fi
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CURRENT_BG=$1
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[[ -n $3 ]] && echo -n $3
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[[ -n $3 ]] && PROMPT+=$3
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}
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# End the prompt, closing any open segments
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prompt_end() {
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if [[ -n $CURRENT_BG ]]; then
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echo -n " %{%k%F{$CURRENT_BG}%}$SEGMENT_SEPARATOR"
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PROMPT+=" %{%k%F{$CURRENT_BG}%}$SEGMENT_SEPARATOR"
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else
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echo -n "%{%k%}"
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PROMPT+="%{%k%}"
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fi
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echo -n "%{%f%}"
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CURRENT_BG=''
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PROMPT+="%{%f%}"
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CURRENT_BG='NONE'
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}
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### Prompt components
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@ -93,9 +94,9 @@ prompt_git() {
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PL_BRANCH_CHAR=$'\ue0a0' #
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}
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local ref dirty mode repo_path
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repo_path=$(git rev-parse --git-dir 2>/dev/null)
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if $(git rev-parse --is-inside-work-tree >/dev/null 2>&1); then
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repo_path=$(git rev-parse --git-dir 2>/dev/null)
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dirty=$(parse_git_dirty)
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ref=$(git symbolic-ref HEAD 2> /dev/null) || ref="➦ $(git rev-parse --short HEAD 2> /dev/null)"
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if [[ -n $dirty ]]; then
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@ -123,7 +124,7 @@ prompt_git() {
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zstyle ':vcs_info:*' formats ' %u%c'
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zstyle ':vcs_info:*' actionformats ' %u%c'
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vcs_info
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echo -n "${ref/refs\/heads\//$PL_BRANCH_CHAR }${vcs_info_msg_0_%% }${mode}"
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PROMPT+="${ref/refs\/heads\//$PL_BRANCH_CHAR }${vcs_info_msg_0_%% }${mode}"
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fi
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}
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@ -135,15 +136,15 @@ prompt_bzr() {
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revision=`bzr log | head -n2 | tail -n1 | sed 's/^revno: //'`
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if [[ $status_mod -gt 0 ]] ; then
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prompt_segment yellow black
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echo -n "bzr@"$revision "✚ "
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PROMPT+="bzr@$revision ✚ "
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else
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if [[ $status_all -gt 0 ]] ; then
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prompt_segment yellow black
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echo -n "bzr@"$revision
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PROMPT+="bzr@$revision"
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else
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prompt_segment green black
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echo -n "bzr@"$revision
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PROMPT+="bzr@$revision"
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fi
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fi
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fi
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@ -151,36 +152,36 @@ prompt_bzr() {
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prompt_hg() {
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(( $+commands[hg] )) || return
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local rev status
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local rev st branch
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if $(hg id >/dev/null 2>&1); then
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if $(hg prompt >/dev/null 2>&1); then
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if [[ $(hg prompt "{status|unknown}") = "?" ]]; then
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# if files are not added
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prompt_segment red white
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st='±'
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st=' ±'
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elif [[ -n $(hg prompt "{status|modified}") ]]; then
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# if any modification
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prompt_segment yellow black
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st='±'
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st=' ±'
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else
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# if working copy is clean
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prompt_segment green black
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fi
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echo -n $(hg prompt "☿ {rev}@{branch}") $st
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PROMPT+="$(hg prompt "☿ {rev}@{branch}")$st"
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else
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st=""
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rev=$(hg id -n 2>/dev/null | sed 's/[^-0-9]//g')
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branch=$(hg id -b 2>/dev/null)
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if `hg st | grep -q "^\?"`; then
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prompt_segment red black
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st='±'
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st=' ±'
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elif `hg st | grep -q "^[MA]"`; then
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prompt_segment yellow black
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st='±'
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st=' ±'
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else
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prompt_segment green black
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fi
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echo -n "☿ $rev@$branch" $st
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PROMPT+="☿ $rev@$branch$st"
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fi
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fi
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}
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@ -207,7 +208,7 @@ prompt_status() {
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symbols=()
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[[ $RETVAL -ne 0 ]] && symbols+="%{%F{red}%}✘"
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[[ $UID -eq 0 ]] && symbols+="%{%F{yellow}%}⚡"
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[[ $(jobs -l | wc -l) -gt 0 ]] && symbols+="%{%F{cyan}%}⚙"
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[[ ${#jobstates} -ne 0 ]] && symbols+="%{%F{cyan}%}⚙"
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[[ -n "$symbols" ]] && prompt_segment black default "$symbols"
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}
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@ -215,6 +216,7 @@ prompt_status() {
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## Main prompt
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build_prompt() {
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RETVAL=$?
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PROMPT='%{%f%b%k%}'
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prompt_status
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prompt_virtualenv
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prompt_context
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@ -223,6 +225,8 @@ build_prompt() {
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prompt_bzr
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prompt_hg
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prompt_end
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PROMPT+=' '
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}
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PROMPT='%{%f%b%k%}$(build_prompt) '
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autoload -U add-zsh-hook
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add-zsh-hook precmd build_prompt
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