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speed up by using globals instead of stdout and by caching basic prompt elements

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pull/22/head
romkatv 6 years ago
parent 7611cfda98
commit e5b954fcae
1 changed files with 61 additions and 53 deletions
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114
powerlevel9k.zsh-theme
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@ -117,8 +117,8 @@ set_default POWERLEVEL9K_MAX_CACHE_SIZE 10000
# printed. In order to cache the results of expensive computations in these functions,
# we use a temporary file to communicate with the parent shell and to ask it to
# change environment variables.
typeset -AH p9k_cache_data=()
typeset P9K_CACHE_CHANNEL=${$(mktemp -u)%/*}/p9k_cache_channel.$$
typeset -AH _p9k_cache_data=()
typeset _P9K_CACHE_CHANNEL=${$(mktemp -u)%/*}/p9k_cache_channel.$$
# Store a key-value pair in the cache.
#
@ -131,7 +131,7 @@ p9k_cache_set() {
if [[ $POWERLEVEL9K_USE_CACHE == true ]]; then
# Prepend dot to the value so that we can easily tell apart empty
# values from missing in p9k_cache_get.
echo -E "p9k_cache_data+=(${(qq)1} .${(qq)2})" >>$P9K_CACHE_CHANNEL
echo -E "_p9k_cache_data+=(${(qq)1} .${(qq)2})" >>$_P9K_CACHE_CHANNEL
fi
}
@ -139,11 +139,19 @@ p9k_cache_set() {
#
# * $1: Key.
#
# Returns 1 if there is no value with the specified key.
# If there is value associated with the specified key, sets _P9K_CACHE_VALUE and returns 0.
# Otherwise unsets _P9K_CACHE_VALUE and returns 1.
#
# Note: The value is returned to the caller via a global variable rather than stdout for
# better performance.
p9k_cache_get() {
local V=${p9k_cache_data[$1]}
[[ -n $V ]] || return 1
echo -E ${V:1}
local V=${_p9k_cache_data[$1]}
if [[ -n $V ]]; then
_P9K_CACHE_VALUE=${V:1}
else
unset _P9K_CACHE_VALUE
return 1
fi
}
# Begin a left prompt segment
@ -160,9 +168,7 @@ set_default last_left_element_index 1
set_default POWERLEVEL9K_WHITESPACE_BETWEEN_LEFT_SEGMENTS " "
left_prompt_segment() {
local cache_key="${(q)0} ${(q)1} ${(q)2} ${(q)3} ${(q)4} ${(q)5:+1} ${(q)6} ${(q)CURRENT_BG}"
local cached
if ! cached=$(p9k_cache_get $cache_key); then
if ! p9k_cache_get $cache_key; then
local output=''
local segment_name=$1
local current_index=$2
@ -232,12 +238,12 @@ left_prompt_segment() {
# Print the visual identifier
output+="${visual_identifier}"
cached="${(qq)output} ${(qq)backgroundColor} ${(qq)foreground}"
p9k_cache_set $cache_key $cached
_P9K_CACHE_VALUE="${(qq)output} ${(qq)backgroundColor} ${(qq)foreground}"
p9k_cache_set $cache_key $_P9K_CACHE_VALUE
fi
# output backgroundColor foreground
local tuple=("${(@Q)${(z)cached}}")
local tuple=("${(@Q)${(z)_P9K_CACHE_VALUE}}")
echo -n $tuple[1]
CURRENT_BG=$tuple[2]
@ -249,17 +255,16 @@ left_prompt_segment() {
# End the left prompt, closes the final segment.
left_prompt_end() {
local cache_key="$0 ${(q)CURRENT_BG}"
local cached
if ! cached=$(p9k_cache_get $cache_key); then
if ! p9k_cache_get $cache_key; then
if [[ -n $CURRENT_BG ]]; then
cached+="%k$(foregroundColor ${CURRENT_BG})$(print_icon 'LEFT_SEGMENT_SEPARATOR')"
_P9K_CACHE_VALUE="%k$(foregroundColor ${CURRENT_BG})$(print_icon 'LEFT_SEGMENT_SEPARATOR')"
else
cached+="%k"
_P9K_CACHE_VALUE="%k"
fi
cached+="%f$(print_icon 'LEFT_SEGMENT_END_SEPARATOR')"
p9k_cache_set $cache_key $cached
_P9K_CACHE_VALUE+="%f$(print_icon 'LEFT_SEGMENT_END_SEPARATOR')"
p9k_cache_set $cache_key $_P9K_CACHE_VALUE
fi
echo -n $cached
echo -n $_P9K_CACHE_VALUE
CURRENT_BG=''
}
@ -279,9 +284,8 @@ set_default last_right_element_index 1
set_default POWERLEVEL9K_WHITESPACE_BETWEEN_RIGHT_SEGMENTS " "
right_prompt_segment() {
local cache_key="${(q)0} ${(q)1} ${(q)2} ${(q)3} ${(q)4} ${(q)5:+1} ${(q)6} ${(q)CURRENT_RIGHT_BG}"
local cached
if ! cached=$(p9k_cache_get $cache_key); then
if ! p9k_cache_get $cache_key; then
local output=''
local segment_name="${1}"
local current_index=$2
@ -354,12 +358,12 @@ right_prompt_segment() {
# Print whitespace only if segment is not joined or first right segment
[[ $joined == false ]] || [[ "$CURRENT_RIGHT_BG" == "NONE" ]] && output+="${POWERLEVEL9K_WHITESPACE_BETWEEN_RIGHT_SEGMENTS}"
cached="${(qq)output} ${(qq)backgroundColor} ${(qq)visual_identifier}"
p9k_cache_set $cache_key $cached
_P9K_CACHE_VALUE="${(qq)output} ${(qq)backgroundColor} ${(qq)visual_identifier}"
p9k_cache_set $cache_key $_P9K_CACHE_VALUE
fi
# output backgroundColor visual_identifier
local tuple=("${(@Q)${(z)cached}}")
local tuple=("${(@Q)${(z)_P9K_CACHE_VALUE}}")
echo -n $tuple[1]
CURRENT_RIGHT_BG=$tuple[2]
@ -419,17 +423,17 @@ prompt_background_jobs() {
local num_jobs=$#job_lines
local cache_key="$0 $num_jobs"
local cached
if ! cached=$(p9k_cache_get $cache_key); then
cached=""
if ! p9k_cache_get $cache_key; then
if [[ "$POWERLEVEL9K_BACKGROUND_JOBS_VERBOSE" == "true" ]] && ([[ "$num_jobs" -gt 1 ]] || [[ "$POWERLEVEL9K_BACKGROUND_JOBS_VERBOSE_ALWAYS" == "true" ]]); then
cached=$num_jobs
_P9K_CACHE_VALUE=$num_jobs
else
_P9K_CACHE_VALUE=''
fi
p9k_cache_set $cache_key $cached
p9k_cache_set $cache_key $_P9K_CACHE_VALUE
fi
"$1_prompt_segment" "$0" "$2" "$DEFAULT_COLOR" "cyan" "$cached" 'BACKGROUND_JOBS_ICON'
"$1_prompt_segment" "$0" "$2" "$DEFAULT_COLOR" "cyan" "$_P9K_CACHE_VALUE" 'BACKGROUND_JOBS_ICON'
}
################################################################
@ -881,8 +885,7 @@ prompt_dir() {
# using $PWD instead of "$(print -P '%~')" to allow use of POWERLEVEL9K_DIR_PATH_ABSOLUTE
local current_path=$PWD # WAS: local current_path="$(print -P '%~')"
local cache_key="$0 $2 ${(q)current_path}"
local cached
if ! cached=$(p9k_cache_get $cache_key); then
if ! p9k_cache_get $cache_key; then
# check if the user wants to use absolute paths or "~" paths
[[ ${(L)POWERLEVEL9K_DIR_PATH_ABSOLUTE} != "true" ]] && current_path=${current_path/#$HOME/"~"}
# declare all local variables
@ -1123,11 +1126,11 @@ prompt_dir() {
current_path=${current_path:s/~/$POWERLEVEL9K_HOME_FOLDER_ABBREVIATION}
fi
cached="$0_$current_state ${(qq)2} blue ${(qq)DEFAULT_COLOR} ${(qq)current_path} ${(qq)dir_states[$current_state]}"
p9k_cache_set $cache_key $cached
_P9K_CACHE_VALUE="$0_$current_state ${(qq)2} blue ${(qq)DEFAULT_COLOR} ${(qq)current_path} ${(qq)dir_states[$current_state]}"
p9k_cache_set $cache_key $_P9K_CACHE_VALUE
fi
"$1_prompt_segment" "${(@Q)${(z)cached}}"
"$1_prompt_segment" "${(@Q)${(z)_P9K_CACHE_VALUE}}"
}
################################################################
@ -1499,8 +1502,7 @@ exit_code_or_status() {
prompt_status() {
local cache_key="$0 $2 $RETVAL $RETVALS"
local cached
if ! cached=$(p9k_cache_get $cache_key); then
if ! p9k_cache_get $cache_key; then
local ec_text
local ec_sum
local ec
@ -1527,18 +1529,18 @@ prompt_status() {
if (( ec_sum > 0 )); then
if [[ "$POWERLEVEL9K_STATUS_CROSS" == false && "$POWERLEVEL9K_STATUS_VERBOSE" == true ]]; then
cached="$0_ERROR ${(qq)2} red yellow1 ${(qq)ec_text} CARRIAGE_RETURN_ICON"
_P9K_CACHE_VALUE="$0_ERROR ${(qq)2} red yellow1 ${(qq)ec_text} CARRIAGE_RETURN_ICON"
else
cached="$0_ERROR ${(qq)2} ${(qq)DEFAULT_COLOR} red '' FAIL_ICON"
_P9K_CACHE_VALUE="$0_ERROR ${(qq)2} ${(qq)DEFAULT_COLOR} red '' FAIL_ICON"
fi
elif [[ "$POWERLEVEL9K_STATUS_OK" == true ]] && [[ "$POWERLEVEL9K_STATUS_VERBOSE" == true || "$POWERLEVEL9K_STATUS_OK_IN_NON_VERBOSE" == true ]]; then
cached="$0_OK ${(qq)2} ${(qq)DEFAULT_COLOR} green '' OK_ICON"
_P9K_CACHE_VALUE="$0_OK ${(qq)2} ${(qq)DEFAULT_COLOR} green '' OK_ICON"
fi
if (( $#RETVALS < 3 )); then
p9k_cache_set $cache_key $cached
p9k_cache_set $cache_key $_P9K_CACHE_VALUE
fi
fi
"$1_prompt_segment" "${(@Q)${(z)cached}}"
"$1_prompt_segment" "${(@Q)${(z)_P9K_CACHE_VALUE}}"
}
################################################################
@ -1916,6 +1918,14 @@ powerlevel9k_preexec() {
_P9K_TIMER_START=$EPOCHREALTIME
}
if [[ $POWERLEVEL9K_USE_CACHE == true ]]; then
_P9K_MULTILINE_FIRST_PROMPT_PREFIX=$(print_icon MULTILINE_FIRST_PROMPT_PREFIX)
_P9K_MULTILINE_LAST_PROMPT_PREFIX=$(print_icon MULTILINE_LAST_PROMPT_PREFIX)
else
_P9K_MULTILINE_FIRST_PROMPT_PREFIX='$(print_icon MULTILINE_FIRST_PROMPT_PREFIX)'
_P9K_MULTILINE_LAST_PROMPT_PREFIX='$(print_icon MULTILINE_LAST_PROMPT_PREFIX)'
fi
set_default POWERLEVEL9K_PROMPT_ADD_NEWLINE false
powerlevel9k_prepare_prompts() {
# Return values. These need to be global, because
@ -1933,17 +1943,18 @@ powerlevel9k_prepare_prompts() {
# Reset start time
_P9K_TIMER_START=0x7FFFFFFF
if [[ -s $P9K_CACHE_CHANNEL ]]; then
eval $(<$P9K_CACHE_CHANNEL)
rm -f $P9K_CACHE_CHANNEL
if [[ -n $POWERLEVEL9K_MAX_CACHE_SIZE && $#p9k_cache_data -gt $POWERLEVEL9K_MAX_CACHE_SIZE ]]; then
p9k_cache_data=()
if [[ -s $_P9K_CACHE_CHANNEL ]]; then
eval $(<$_P9K_CACHE_CHANNEL)
rm -f $_P9K_CACHE_CHANNEL
if [[ -n $POWERLEVEL9K_MAX_CACHE_SIZE && $#_p9k_cache_data -gt $POWERLEVEL9K_MAX_CACHE_SIZE ]]; then
_p9k_cache_data=()
fi
fi
local NEWLINE=$'\n'
if [[ "$POWERLEVEL9K_PROMPT_ON_NEWLINE" == true ]]; then
PROMPT='$(print_icon 'MULTILINE_FIRST_PROMPT_PREFIX')%f%b%k$(build_left_prompt)
$(print_icon 'MULTILINE_LAST_PROMPT_PREFIX')'
PROMPT="$_P9K_MULTILINE_FIRST_PROMPT_PREFIX%f%b%k\$(build_left_prompt)$NEWLINE$_P9K_MULTILINE_LAST_PROMPT_PREFIX"
if [[ "$POWERLEVEL9K_RPROMPT_ON_NEWLINE" != true ]]; then
# The right prompt should be on the same line as the first line of the left
# prompt. To do so, there is just a quite ugly workaround: Before zsh draws
@ -1967,9 +1978,6 @@ $(print_icon 'MULTILINE_LAST_PROMPT_PREFIX')'
RPROMPT="${RPROMPT_PREFIX}"'%f%b%k$(build_right_prompt)%{$reset_color%}'"${RPROMPT_SUFFIX}"
fi
local NEWLINE='
'
if [[ $POWERLEVEL9K_PROMPT_ADD_NEWLINE == true ]]; then
NEWLINES=""
repeat ${POWERLEVEL9K_PROMPT_ADD_NEWLINE_COUNT:-1} { NEWLINES+=$NEWLINE }

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