wish/wish.sh

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#!/usr/bin/env bash
# INTERNAL USE ONLY! Do not use this in plugins.
function wish_print_right_prompt() {
local idx=0
for i in ${WISH_RPL[@]}; do
echo "\e[$(($COLUMNS - $i + 1))G${WISH_RIGHT_PS1[$idx]}"
((idx++))
done
}
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function wish_init() {
# Find default config file if WISH_CONFIG_FILE is unset
if [[ ! -v WISH_CONFIG_FILE ]]; then
for path in "$XDG_CONFIG_HOME" "/usr/share" "$HOME/.config"; do
if [[ -f "$path/wish/config.gie" ]]; then
WISH_CONFIG_FILE="$path/wish/config.gie"
break
fi
done
fi
# Source config files
for path in "$XDG_CONFIG_HOME" "/usr/share" "$HOME/.config"; do
if [[ -f "$path/wish/wish.py" ]]; then
source <($path/wish/wish.py ${WISH_CONFIG_FILE[@]})
break
fi
done
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# Source all plugins
# If WISH_CONFIG_FILE is not set, then assume that the user hasn't updated
# to a config file yet. Set WISH_PLUGINS_SOURCE=WISH_PLUGINS.
if [[ ! -v WISH_CONFIG_FILE ]]; then
WISH_PLUGINS_SOURCE=("${WISH_PLUGINS[@]}" "${WISH_RIGHT_PLUGINS[@]}")
fi
local plugin
local path
for plugin in ${WISH_PLUGINS_SOURCE[@]}; do
for path in "$XDG_CONFIG_HOME" "/usr/share" "$HOME/.config"; do
source "$path/wish/plugins/$plugin.sh" &> /dev/null && break
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done
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[[ $? -ne 0 ]] && echo "Plugin $plugin not found." >&2
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done
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# Source theme
WISH_THEME=${WISH_THEME:-plain}
while :; do
for theme in "$XDG_CONFIG_HOME" "/usr/share" "$HOME/.config"; do
source "$theme/wish/themes/$WISH_THEME.sh" &> /dev/null && break
done
if [[ $? -eq 0 ]]; then
break
else
echo "Theme $WISH_THEME not found. Using theme plain." >&2
if [[ $WISH_THEME == "plain" ]]; then
break
else
WISH_THEME=plain
fi
fi
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done
# Call plugins to set colors
for plugin in ${WISH_PLUGINS[@]} ${WISH_RIGHT_PLUGINS[@]}; do
eval wish_$(echo $plugin)_set_colors $prev
done
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}
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# Usage: color_to_escape_code [3|4] color
#
# Parameters:
# - [3|4]: Use 3 if escape code is for foreground, 4 for background
# - color: -1 to reset, 0-255 for terminal color codes. 6 digit hexadecimal
# value for true color.
#
# Return value: Prints escape code that sets the fg/bg as requested.
function color_to_escape_code() {
local choice=$1
local color=$2
if [[ $color == -1 ]]; then
echo "\[\033[0;5;0m\]"
else
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if [[ ${#fg_code} -eq 6 ]]; then
local r=$(( 16#${color:0:2} ))
local g=$(( 16#${color:2:2} ))
local b=$(( 16#${color:4:2} ))
echo "\[\033[${choice}8;2;$r;$g;${b}m\]"
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else
echo "\[\033[${choice}8;5;${fg_code}m\]"
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fi
fi
}
# INTERNAL USE ONLY! Do not use this in plugins.
# Usage: wish_append_left escape_codes text
function wish_append_left() {
local text="$2"
local colors="$1"
local prompt_text="${text@P}"
if [[ $text == "\n" ]]; then
((WISH_LPLINE++))
WISH_LPL=(${WISH_LPL[@]} 0)
WISH_LEFT_PS1="$WISH_LEFT_PS1$colors$text"
else
if [[ $((${WISH_LPL[$WISH_LPLINE]} + ${#prompt_text})) -lt $COLUMNS ]]; then
WISH_LEFT_PS1="$WISH_LEFT_PS1$colors$text"
WISH_LPL[$WISH_LPLINE]=$((${WISH_LPL[$WISH_LPLINE]} + ${#prompt_text}))
fi
fi
}
# INTERNAL USE ONLY! Do not use this in plugins.
# Usage: wish_append_right escape_codes text
function wish_append_right() {
local text="$2"
local colors="$1"
local prompt_text="${text@P}"
if [[ $text == "\n" ]]; then
((WISH_RPLINE++))
WISH_RIGHT_PS1=("${WISH_RIGHT_PS1[@]}" "")
WISH_RPL=(${WISH_RPL[@]} 0)
elif [[ $((${WISH_LPL[$WISH_RPLINE]} + ${WISH_RPL[$WISH_RPLINE]} + ${#prompt_text})) -lt $COLUMNS ]]; then
WISH_RIGHT_PS1[$WISH_RPLINE]="${WISH_RIGHT_PS1[$WISH_RPLINE]}$colors$text"
WISH_RPL[$WISH_RPLINE]=$((${WISH_RPL[$WISH_RPLINE]} + ${#prompt_text}))
fi
}
# Public API
# Usage: wish_append bg fg text
#
# Parameters:
# - fg, bg: -1 to reset, 0-255 for terminal color codes. 6 digit hexadecimal
# value for true color.
# - text: Text of the plugin
#
# Return value: None
function wish_append() {
local bg_code=$1
local fg_code=$2
local text=$3
local fg=$(color_to_escape_code 3 $fg_code)
local bg=$(color_to_escape_code 4 $bg_code)
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if [[ $fg_code == -1 ]]; then
case $WISH_STATE in
0)
wish_append_left "$fg$bg" "$text"
;;
1)
wish_append_right "$fg$bg" "$text"
;;
esac
else
case $WISH_STATE in
0)
wish_append_left "$bg$fg" "$text"
;;
1)
wish_append_right "$bg$fg" "$text"
;;
esac
fi
}
# Public API
# Usage: wish_remaining_chars
# Parameters: None
# Return Value: Capture stdout to get the remaining characters available in the
# line.
wish_remaining_chars() {
if [[ $WISH_STATE -eq 0 ]]; then
echo "$(( $COLUMNS - ${WISH_LPL[$WISH_LPLINE]} ))"
else
echo "$(( $COLUMNS - ${WISH_LPL[$WISH_RPLINE]} - ${WISH_RPL[$WISH_RPLINE]} ))"
fi
}
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function wish_main() {
local prev=$?
# Set local IFS to avoid being affected by shell's IFS
local IFS=$' \n'
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PS1=""
WISH_LEFT_PS1=""
WISH_RIGHT_PS1=("")
WISH_LPL=(0)
WISH_RPL=(0)
WISH_RPLINE=0
WISH_LPLINE=0
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local i
# Set newline
if [[ $WISH_AUTONEWLINE != 0 ]]; then
echo -ne "\033[6n" ; read -s -d ';'; read -s -d R WISH_CURSOR_POSITION
if [[ $WISH_CURSOR_POSITION != "1" ]]; then
PS1="\n"
fi
fi
# Generate left prompt.
WISH_STATE=0 # 0 = left prompt, 1 = right prompt
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for i in $(seq 0 $((${#WISH_PLUGINS[@]} - 1))); do
wish_${WISH_PLUGINS[i]}_main $prev
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if [[ -v WISH_POWERLINE ]] && [[ $WISH_POWERLINE != 0 ]]; then
if wish_${WISH_PLUGINS[$i]}_end $prev; then
if [[ $i -lt $((${#WISH_PLUGINS[@]} - 1)) ]]; then
if wish_${WISH_PLUGINS[$(($i + 1))]}_start $prev; then
local plugin=${WISH_PLUGINS[$i]}
local next_plugin=${WISH_PLUGINS[$(($i+1))]}
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local fg_name="WISH_${plugin^^}_BG"
local bg_name="WISH_${next_plugin^^}_BG"
wish_append ${!bg_name} ${!fg_name}
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fi
else
local plugin=${WISH_PLUGINS[$i]}
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local fg_name="WISH_${plugin^^}_BG"
wish_append -1 ${!fg_name}
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fi
fi
fi
done
# Generate Right prompt.
WISH_STATE=1
for i in $(seq 0 $((${#WISH_RIGHT_PLUGINS[@]} - 1))); do
if [[ -v WISH_POWERLINE ]] && [[ $WISH_POWERLINE != 0 ]]; then
if wish_${WISH_RIGHT_PLUGINS[$i]}_end $prev; then
if [[ $i == 0 ]]; then
local plugin=${WISH_RIGHT_PLUGINS[$i]}
local fg_name="WISH_${plugin^^}_BG"
wish_append -1 ${!fg_name}
elif wish_${WISH_RIGHT_PLUGINS[$(($i - 1))]}_start $prev; then
local plugin=${WISH_RIGHT_PLUGINS[$i]}
local prev_plugin=${WISH_RIGHT_PLUGINS[$(($i-1))]}
local fg_name="WISH_${plugin^^}_BG"
local bg_name="WISH_${prev_plugin^^}_BG"
wish_append ${!bg_name} ${!fg_name}
fi
fi
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fi
wish_${WISH_RIGHT_PLUGINS[$i]}_main $prev
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done
# Save cursor position, print right prompt, restore cursor position,
# print left prompt, reset terminal
PS1=$PS1"\[\e7"
PS1="$PS1$(wish_print_right_prompt)"
PS1="$PS1\e8\]$WISH_LEFT_PS1\[\033[0;5;0m\]"
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}
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wish_init
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PROMPT_COMMAND="wish_main; $PROMPT_COMMAND"